CCNA 2 - Module 1 Exam Answers
1. Which of the following are functions of RAM? (Choose three.)
contains startup configuration file
-stores routing table
-holds fast switching cache
retains contents when power is removed
-stores running configuration file
2. Which of the following layers of the OSI model are incorporated in WAN standards? (Choose two.)
-physical layer
application layer
transport layer
-data link layer
session layer
3. A router is composed of many internal components. Which of the following components stores a copy of the router's configuration file?
metal-oxide memory
read only memory
flash memory
-non-volatile random access memory
4. Which basic components do a router and a standard desktop PC have in common? (Choose three.)
-CPU
hard drive
-input/output interfaces
keyboard
monitor
-system bus
5. Select the statements that correctly describe flash memory in a 2600 series router? (Choose two.)
holds the startup configuration by default
-can be upgraded with single in-line memory modules
-stores Cisco IOS software images
stores routing table information by default
maintains the only copy of an IOS image after the router is booted
6. Which ports on Cisco routers can be used for initial configuration? (Choose two.)
Ethernet
-console
-auxiliary
serial
AUI
BRI
7. Which of the following tasks can be accomplished through a management connection on a router? (Choose three.)
>-troubleshooting problems
-monitoring the system
capturing LAN data packets
-configuring the router
routing data packets
8. Which of the following describes the function of a WAN?
connects peripherals in a single location
connects multiple networks in a single building
provides connectivity on a LAN
-provides connectivity over a large geographic area
9. Why is a console connection to a router or switch preferred when troubleshooting? (Choose two.)
can be accessed remotely
-does not depend on network services
-displays startup and error messages by default
does not require special components
10. Terminal emulation software, such as HyperTerminal, can be used to configure a router. Which of the following HyperTerminal options shown in the graphic are correctly set to allow configuration of a Cisco router? (Choose three.)
bits per second
-data bits
-parity
-stop bits
flow control
11. Which of the following devices are used in the construction of a WAN? (Choose three.)
hubs
-routers
-communication servers
transceivers
-modems
multi-port repeaters
12. An internetwork must include which of the following? (Choose three.)
-switching
static addressing
IETF standardization
-dynamic or static routing
-consistent end-to-end addressing
13. Which of the following are functions of NVRAM? (Choose two.)
stores the routing table
-retains contents when power is removed
-stores the startup configuration file
contains the running configuration file
stores the ARP table
14. During the initial configuration of a 2600 series Cisco router, which cable is required for connecting a PC to the console port?
twisted
crossover
-rollover
straight
15. Several Ethernet hosts on a LAN need the gateway services of a Cisco 2500 series router. Which of the following would be needed to physically connect a router to all of the hosts on the LAN? (Choose two.)
a crossover cable between the transceiver on a router and a switch
crossover cables between a switch and hosts on a LAN
a straight-through cable between the auxiliary port on a router and a switch
a rollover cable between the console port on a router and a switch
-straight-through cables between a switch and hosts on a LAN
-a straight-through cable between the transceiver on a router and a switch
16. What contains the instructions that a router uses to control the flow of traffic through its interfaces?
packet configuration
-configuration files
flash memory
internal components
17. Which router component holds the configuration file when power is lost?
volatile random access memory
read only memory
-non-volatile random access memory
flash memory
18. Which of the following descriptions are true regarding the management connections on a Cisco router? (Choose three.)
-They are non-network connections.
They are used to connect the router to the rest of the production network.
They are synchronous serial ports.
-They are used for initial router configuration.
-They are asynchronous serial ports.
They are accessed using their assigned IP address.
19. Which of the following are true regarding router interfaces? (Choose three.)
provide temporary memory for the router configuration files
-connect the router to the network for packet entry and exit
-can be on the motherboard or a separate module
hold the IOS image
-connect the router to LANs and WANs
20. The console port can be used for which of the following? (Choose three.)
-debugging
-password recovery
routing data between networks
-troubleshooting
connecting one router to another
21. What do routers use to select the best path for outgoing data packets?
ARP tables
bridging tables
-routing tables
switching tables
22. ABC Company just purchased three new routers to start their company network. Which items are needed to establish a terminal session between a PC and the router for the initial configuration? (Choose three.)
straight-through cable
-terminal emulation software
-rollover cable
-RJ-45 to DB-9 connector
V.35 cable
CCNA 2 - Module 2 Exam Answers
1. Which connection method can be used to perform the initial configuration of a router?
-use a serial connection of a computer connected to the console port of a router
telnet to the router through a serial port
use a vty port through the Ethernet interface
use a modem connected to the AUX port of the router
2. What baud rate needs to be configured on terminal emulation software to allow a connection to the console port of a router?
2400
4800
-9600
14200
38400
3. What is the default sequence for loading the IOS?
NVRAM, TFTP, FLASH
NVRAM, TFTP, CONSOLE
FLASH, ROM, TFTP
-FLASH, TFTP, ROM
TFTP, FLASH, ROM
4. Which of the following statements concerning router interface modes are correct? (Choose three.)
-User EXEC mode provides commands to monitor router operation.
Privileged EXEC mode only provides commands to change or configure router operation.
Password protected configuration modes can be accessed from either user EXEC or privileged EXEC modes.
-On a router with the name Core1, the prompt indicating privileged EXEC mode is Core1#.
The command to enter privileged EXEC mode is Router# enable.
-A username and password may be required to enter privileged EXEC mode.
5. What information about the router and its startup process can be gathered from the output of the show version command? (Choose three.)
-the last restart method
the tftp software version installed
the amount of NVRAM and FLASH used
-the location used for loading the IOS
6. What information about the router and its startup process can be gathered from the output of the show version command? (Choose three.)
-the last restart method
the tftp software version installed
the amount of NVRAM and FLASH used
-the configuration register settings
-the location used for loading the IOS
7. Cisco IOS software is separated into two levels as a security feature. What are those two levels? (Choose two.)
global
-privileged
local
-user
interface
8. Under what conditions does the router enter setup mode? (Choose three.)
immediately after issuing the command Router#erase start
-after issuing the command Router#setup
-during the initial configuration of a router
-after deleting the backup configuration and reloading the router
after deleting the running configuration
9. Which command takes precedence if the commands enable password and enable secret are both configured on a router?
enable password
-enable secret
Neither. They are both enabled.
Neither. They cancel each other out.
10. A network administrator needs to configure a router. Which of the following connection methods requires network functionality to be accessible?
console
AUX
-Telnet
modem
11. Which of the following identifies the correct items needed to initially configure a router?
1) DB-9-to-RJ-45 on the PC's serial port
2) a straight through cable
3) the router's console port
1) PC's Ethernet port
2) a crossover cable
3) the router's Ethernet port
1) DB-9-to-RJ-45 on the PC's serial port
2) a rollover cable
3) the router's Ethernet port
-1) DB-9-to-RJ-45 on the PC's serial port
-2) a rollover cable
-3) the router's console port
1) PC's Ethernet port
2) a rollover cable
3) the router's Ethernet port
12. Which tasks can be performed in the ROM monitor mode? (Choose two.)
-recover from system failures
create startup configuration files
-recover from lost passwords
configure IP addresses on all router interfaces
perform high level diagnostics
13. Which of the following is the correct flow of routines for a router startup?
-load bootstrap, load IOS, apply configuration
load bootstrap, apply configuration, load IOS
load IOS, load bootstrap, apply configuration, check hardware
check hardware, apply configuration, load bootstrap, load IOS
14. What does the command sh? return as output if issued at the Router# prompt?
all show commands allowed in privileged mode
-all commands beginning with the letters sh
an incomplete command error message
an invalid command error message
15. Which keystroke is used to move to the beginning of a command line?
-Ctrl-A
Ctrl-B
Esc-A
Esc-B
Ctrl-C
Ctrl-Z
16. What information does the name of the IOS file provide to the network administrator? (Choose three.)
the amount of NVRAM required to run the image
-the hardware platform the image runs on
the various software platforms the image can run on
-special features and capabilities of the image
the bandwidth supported by the IOS
-where the image executes from and if it has been compressed
17. What is the default sequence for loading the configuration file?
NVRAM, FLASH, ROM
FLASH, TFTP,CONSOLE
-NVRAM, TFTP, CONSOLE
FLASH, TFTP, ROM
18. What is the maximum number of commands allowed in the history buffer?
10
20
128
255
-256
19. The active IOS of the router is initialized from FLASH. In this scenario, what commands would be used to display the name of the active IOS? (Choose two.)
Router#show IOS
-Router#show flash
Router#show nvram
-Router#show version
Router#show startup-config
Router#show running-config
20. Which keystrokes can be used to return to the privileged mode from the interface configuration mode?
Ctrl-P
Ctrl-Shift-6, then X
-Ctrl-Z
Esc
21. Which tasks can be accomplished by using the command history feature? (Choose two.)
View a list of commands entered in a previous session.
Recall up to 15 command lines by default.
-Set the command history buffer size.
-Recall previously entered commands.
Save command lines in a log file for future reference.
CCNA 2 - Module 3 Exam Answers
1. Select the interface descriptions that provide the most appropriate information. (Choose two.)
-circuit number
host IP address
telnet password
number of hops between routers
-purpose and location of the interface
2. The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the
-Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
-Sydney(config-if)# no shutdown
Sydney(config-if)# ip address 201.100.53.1 255.255.255.224
-Sydney(config-if)# clock rate 56000
Sydney(config-if)# ip host Melbourne 201.100.53.2
3. Why is it important to create standards for network consistency? (Choose three.)
-reduces network complexity
increases unplanned downtime
-limits unplanned downtime
increases bandwidth by regulating networking performance
-limits events that may impact network performance
4. Select the correct sequence of commands that will configure "Engineering LAN" as the interface description on the Ethernet0 interface.
Router# configure terminal
Router(config)# interface e0 description Engineering LAN
-Router# configure terminal
-Router(config)# interface e0
-Router(config-if)# description Engineering LAN
Router# configure terminal
Router(config)# interface e0
Router(config-if)# interface description Engineering LAN
Router# configure terminal
Router(config)# description Engineering LAN
5. Select the commands that will store the current configuration file to a network TFTP server? (Choose two.)
-Router# copy run tftp
Router# copy tftp run
-Router# copy running-config tftp
Router# copy tftp running-config
Router(config)# copy running-config tftp
Router(config)# copy tftp running-config
6. What are the default settings for a serial interface? (Choose three.)
-DTE
DCE
-shutdown
-no IP address
clock rate 56000
encapsulation ARPA
7. A network administrator wants to assure that any password that permits access to the privileged EXEC mode is not shown in plain text in the configuration files. Which commands will accomplish this task? (Choose two.)
Router(config)#enable cisco secret
Router(config)#enable cisco
-Router(config)#service password-encryption
-Router(config)#enable secret cisco
Router(config)#encrypt-all cisco
Router(config)#service encryption-password
8. What will be the response from the router after the command, "router(config)# hostname
-portsmouth(config)#
invalid input detected
router(config-host)#
hostname =
? command not recognized
router(config)#
9. Select the recommended locations to save a running-config file. (Choose three.)
all network hosts
-network server
-floppy disk
-TFTP server
server that is not on the network
10. What is the effect of the command ip host HQ 192.1.1.1?
-permits a ping to 192.1.1.1 with the command ping HQ
assigns the description HQ to the interface with the ip address 192.1.1.
renames the router as HQ
defines a static route to the host 192.1.1.1
configures the remote device HQ with the ip address of 192.1.1.1
11. Passwords can be used to restrict access to all or parts of the Cisco IOS. Select the modes and interfaces that can be protected with passwords. (Choose three.)
-VTY interface
-console interface
Ethernet interface
secret EXEC mode
-privileged EXEC mode
router configuration mode
12. What is the default state of the interfaces on a router?
up, line protocol down
down, line protocol down
-adminstratively down, line protocol down
up, line protocol up
13. Which command turns on a router interface?
Router(config-if)# enable
Router(config-if)# no down
Router(config-if)# s0 active
Router(config-if)# interface up
-Router(config-if)# no shutdown
14. Which command sequence will permit access to all five router virtual terminal lines with a password of cisco?
Router(config-line)#config telnet
Router(config-line)# line vty 0 5
Router(config-line)# password cisco
Router(config)# line vty 0 4
Router(config)# password cisco
-Router(config)# line vty 0 4
-Router(config-line)# password cisco
-Router(config-line)# login
Router(config-line)# config telnet
Router(config-line)# password cisco
Router(config-line)# sessions 0 4
15. Which commands display information about the IOS or configuration files stored in router memory? (Choose three.)
Router# show ram
-Router# show flash
Router# show hosts
Router# show history
-Router# show version
-Router# show startup-config
16. An IP network is to be added to a router Ethernet interface. What steps must be performed to configure this interface to allow connectivity to the hosts on this LAN? (Choose two.)
-Enter the command no shutdown.
A password must be set on the interface.
The interface DCE clock rate must be set.
The interface must be configured for virtual terminal access.
-The interface must be configured with an IP address and subnet mask.
The router must be put in setup mode in order for the interface to be configured.
17. What must be configured to establish a serial link between two routers that are directly connected?
a clock rate on the DTE interface
a no clock rate command on the DTE interface
no configuration is required
-a clock rate on the DCE interface
18. Router names are associated with IP addresses. What is the name of the table that is created by this association?
IP table
SAP table
ARP table
MAC table
-HOST table
RARP table
19. Which statements are true regarding the recommended use of login banners? (Choose two.)
-They should be used to display information regarding system changes or maintenance.
-They should be used to display warnings to unauthorized users.
They should be used to display welcome messages prior to login.
They should be seen only by system administrators.
They should provide confirmation of incoming IP addresses.
20. Which are valid router prompts? (Choose three.)
Router(privileged)#
-Router(config)#
Router(command)#
-Router(config-router)#
-Router(config-if)#
Router(exec)#
21. A telnet session can be established when using the IP address of a router but not the name of the router. Which of the following is the most likely cause of the problem?
-an incorrect host table entry
an incorrect ARP table entry
an incorrect routing table entry
an incorrect protocol configured
an incorrect subnet mask
22. Select the commands necessary to remove any existing configuration on a router. (Choose two.)
delete flash
-erase startup-config
erase running-config
restart
-reload
delete NVRAM
CCNA 2 - Module 4 Exam Answers
1. Routers have different types of memory. Choose the answer that describes flash memory.
provides working storage
-stores a fully functional IOS image
stores the startup configuration file
initializes the code used to boot the router
2. What does a configuration register setting of 0x2102 indicate on a router?
It tells the router to locate and load the IOS from NVRAM.
It tells the router to locate and load the IOS from FLASH.
It tells the router to bypass the configuration in NVRAM.
-It tells the router to look in the startup configuration for boot system commands.
3. Which of the following are steps in saving a router configuration file to a TFTP server?
Enter configuration mode.
-Enter the IP address to the TFTP server.
-Use the copy running-config tftp command.
Use the copy tftp running-config command.
-Name the configuration file or accept the default name.
4. If the configuration register instructs a router to look for configuration information in NVRAM and no boot system commands exist there, from where will the router next attempt to boot the IOS?
RAMR
ROM
-FLASH
EPROM
ROMMON
5. Which command will copy an IOS image from a TFTP server to a router?
-Router# copy tftp flash
Router# copy flash tftp
Router(config)# copy tftp flash
Router(config)# copy flash tftp
6. Which of the following can be configured as a source for the IOS image by using the boot system command? (Choose two.)
-TFTP server
HTTP server
Telnet server
-Flash memory
NVRAM memory
7. Which command is used to change the order in which the router looks for system bootstrap information?
config-image
config-system
config-bootfield
config system bootstrap
8. Which part of the configuration register indicates the location of the IOS?
the bootstrap
the boot field
the IOS locator
the system image loader
9. the system image loader
provides working storage
stores a fully functional IOS image
-stores the startup configuration file
initializes the code that is used to boot the router
10. An IOS image can be copied into flash from a TFTP server. Which of the following statements are true regarding this process? (Choose three.)
-A series of "!'s" are displayed as the image is downloaded successfully to flash.
The copy tftp flash:filename ip address command is used to copy the IOS from the server to flash.
-After the new flash image is downloaded, it is verified.
-A series of "e's" are displayed as the current IOS image is erased from flash.
Flash must be cleared with the erase command prior to beginning the download process.
11. The commands shown in the graphic were entered to alter the startup sequence of the router. On the next reload, which IOS will be loaded?
The router will load c2500-js-l.112-26d.
The router will load c2500-d-l.120-9.
The router will load the IOS from
-The router will boot into ROM monitor mode.
12. What command can be used in ROM monitor mode to run the IOS image in flash?
rommon1> config-register 0x2102
-rommon1> boot flash:filename
rommon1> xmodem:filename
rommon1> boot system flash:filename
rommon1> reload system flash:
13. If boot system commands have been configured, which of the following could happen if a router fails to obtain an IOS image from the primary sources during bootup?
-The router will load a subset of a full IOS version from system
The router will attempt to reboot two times before failing.
The administrator will be prompted to load a valid IOS image
The router will load the last good IOS image from NVRAM.
14. The router has been configured with a valid configuration file. Which of the following could be a cause for a router not booting normally? (Choose two.)
-The flash image is corrupt.
A console cable is disconnected.
The flash image is located in NVRAM.
The startup configuration file is incomplete.
-The router encountered a hardware error
15. If a router cannot find a valid configuration file during the startup sequence, what will occur?
The startup sequence will reset.
-The router will prompt the user for a response to enter setup mode.
The startup sequence will halt until a valid configuration file is acquired.
The router will generate a default configuration file based on the last valid configuration.
The router will monitor local traffic to determine routing protocol configuration requirements.
16. Where does a router look for boot system statements?
ROM
RAM
-NVRAM
Flash
17. The Cisco IOS image naming convention allows identification of different versions and capabilities of the IOS. What information can be gained from the filename c2600-d-mz.121-4? (Choose two.)
The "mz" in the filename represents the special capabilities and features of the IOS.
The file is uncompressed and requires 2.6 MB of RAM to run.
-The software is version 12.1, 4th revision.
The file is downloadable and 121.4MB in size.
-The IOS is for the Cisco 2600 series hardware platform.
18. Which command will move configuration files among RAM, NVRAM and a TFTP server?
ping
-copy
move
setup
bootp
backup
19. Which two items below are required by routers in order for them to perform their basic operations? (Choose two.)
a tftp server
-a configuration file
a configuration register file
-an operating system file
a DNS table
CCNA 2 - Module 5 Exam Answers
1. The commands shown in the graphic were entered to alter the startup sequence of the router. On the next reload, which IOS will be loaded?
The router will load c2500-js-l.112-26d.
The router will load c2500-d-l.120-9.
The router will load the IOS from ROM.
x The router will boot into ROM monitor mode.
2. Routers have different types of memory. Choose the answer that describes flash memory.
provides working storage
x stores a fully functional IOS image
stores the startup configuration file
initializes the code used to boot the router
3.Routers have different types of memory. Choose the answer that describes NVRAM.
provides working storage
stores a fully functional IOS image
x stores the startup configuration file
initializes the code that is used to boot the router
4.Which command will backup configuration files from RAM to NVRAM or a TFTP server?
backup
x copy
telnet
move
5.Which command will copy an IOS image from a TFTP server to a router?
x Router# copy tftp flash
Router# copy flash tftp
Router(config)# copy tftp flash
Router(config)# copy flash tftp
6.Which of the following can be configured as a source for the IOS image by using the boot system command? (Choose two.)
x TFTP server
HTTP server
Telnet server
x Flash memory
NVRAM memory
7.Which part of the configuration register indicates the location of the IOS?
the bootstrap
x the boot field
the IOS locator
the system image loader
8.Which command is used to change the order in which the router looks for system bootstrap information?
config-image
config-system
x config-register
config-bootfield
config system bootstrap
9.Which two items below are required by routers in order for them to perform their basic operations? (Choose two.)
a tftp server
x a configuration file
a configuration register file
x an operating system file
a DNS table
10. An IOS image can be copied into flash from a TFTP server. Which of the following statements are true regarding this process? (Choose three.)
x A series of "!'s" are displayed as the image is downloaded successfully to flash.
The copy tftp flash:filename ip address command is used to copy the IOS from the server to flash.
x After the new flash image is downloaded, it is verified.
x A series of "e's" are displayed as the current IOS image is erased from flash.
Flash must be cleared with the erase command prior to beginning the download process.
11.What command can be used in ROM monitor mode to run the IOS image in flash?
rommon1> config-register 0x2102
x rommon1> boot flash:filename
rommon1> xmodem:filename
rommon1> boot system flash:filename
rommon1> reload system flash:
12.The Cisco IOS image naming convention allows identification of different versions and capabilities of the IOS. What information can be gained from the filename c2600-d-mz.121-4? (Choose two.)
The "mz" in the filename represents the special capabilities and features of the IOS.
The file is uncompressed and requires 2.6 MB of RAM to run.
x The software is version 12.1, 4th revision.
The file is downloadable and 121.4MB in size.
x The IOS is for the Cisco 2600 series hardware platform.
13.Where does a router look for boot system statements?
ROM
RAM
x NVRAM
Flash
14. What does a configuration register setting of 0x2102 indicate on a router?
It tells the router to locate and load the IOS from NVRAM.
It tells the router to locate and load the IOS from FLASH.
It tells the router to bypass the configuration in NVRAM.
x It tells the router to look in the startup configuration for boot system commands.
15. If a router cannot find a valid configuration file during the startup sequence, what will occur?
The startup sequence will reset.
x The router will prompt the user for a response to enter setup mode.
The startup sequence will halt until a valid configuration file is acquired.
The router will generate a default configuration file based on the last valid configuration.
The router will monitor local traffic to determine routing protocol configuration requirements.
16.If the configuration register instructs a router to look for configuration information in NVRAM and no boot system commands exist there, from where will the router next attempt to boot the IOS?
RAMR
ROM
x FLASH
EPROM
ROMMON
17.If boot system commands have been configured, which of the following could happen if a router fails to obtain an IOS image from the primary sources during bootup?
x The router will load a subset of a full IOS version from system ROM.
The router will attempt to reboot two times before failing.
The router will load the last good IOS image from NVRAM.
The administrator will be prompted to load a valid IOS image.
18.The router has been configured with a valid configuration file. Which of the following could be a cause for a router not booting normally? (Choose two.)
x The flash image is corrupt.
A console cable is disconnected.
The flash image is located in NVRAM.
The startup configuration file is incomplete.
x The router encountered a hardware error.
19.Which of the following are steps in saving a router configuration file to a TFTP server? (Choose three.)
Enter configuration mode.
x Enter the IP address to the TFTP server.
x Use the copy running-config tftp command.
Use the copy tftp running-config command.
x Name the configuration file or accept the default name.
CCNA 2 - Module 6 Exam Answers
1 How does a router learn about routes to a network? (Choose three.)
- Information is gathered from its own configuration regarding directly connected networks.
Switches forward destination address information to each router.
Hosts communicate destination network information to each router.
- Other routers forward information about known networks.
- Routes are entered manually by a network administrator.
Routes are learned from information gathered from ARP tables.
2 Why is it necessary to specify a list of networks when configuring an interior routing protocol?
to tell the router how to reach those networks
to tell the router which attached networks participate in routing updates
to tell the router which set of metrics to use for the attached networks
- to tell the router which routing protocol to use
3 Assuming that the network shown in the graphic is converged and dynamic routing is enabled, which of the following conditions will cause a modification to the Orlando routing table? (Choose two.)
- The device connecting the S0 interface of the Tampa router to the serial link loses power.
- A network administrator shuts down the Orlando router E0 interface.
A DCHP server connected to the Tampa E1 network loses power.
The IP address of a workstation on the Orlando E0 network is reassigned.
A host on the Orlando E1 network transmits data to a server on the Tampa E1 network.
A Telnet connection to the Orlando router fails.
4 Which two statements describe autonomous systems? (Choose two.)
- Interior gateway protocols are used between autonomous systems.
Exterior gateway protocols are used between autonomous systems.
- An autonomous system may be under the control of multiple organizations.
An autonomous system is identified by a 16 bit number assigned by ARIN.
The autonomous system is identified in the network portion of the IP address.
5 Which of the following are valid static IP routes? (Choose three.)
RouterB(config)# ip route 192.168.5.0 255.255.255.0 S1
- RouterC(config)# ip route 192.168.1.0 255.255.255.0 S1
- RouterA(config)# ip route 192.168.3.0 255.255.255.0 192.168.2.2
RouterB(config)# ip route 192.168.1.0 255.255.255.0 192.168.2.2
- RouterC(config)# ip route 192.168.2.0 255.255.255.0 192.168.4.1
RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.2.1
6 What is the purpose of a routing protocol?
It is used to build and maintain ARP tables.
It provides a method for segmenting and reassembling data packets.
It allows an administrator to devise an addressing scheme for the network.
- It allows a router to share information about known networks with other routers.
It provides a procedure for encoding and decoding data into bits for packet forwarding.
7 The network shown in the graphic is using RIP as the routing protocol. Which of the following are true regarding the network discovery process that will occur for this network? (Choose three.)
- The Palm Beach router will show networks 192.168.7.0 and 192.168.8.0 as directly connected networks.
All of the routers will have direct knowledge of the exact topology of the entire network.
- The Key West router will forward routing table information to the Miami and Palm Beach routers.
The Miami router will learn about network 192.168.1.0 from the Key West router.
- If network 192.168.4.0 becomes unavailable, the Key West router will notify the other routers of this fact in the next update.
8 Select the statements that describe link-state routing processes? (Choose three.)
- Each router develops its own map of the entire network.
- Routers send triggered updates when changes in the network occur.
- Link-state routing protocols place a higher load on router resources during the routing protocol initialization.
Link-state protocols are more prone to routing loops than distance vector routing protocols.
Networks using link-state routing protocols are slower to reach convergence after changes have occurred than those using distance vector protocols.
9 Which type of address does a router use to make routing decisions?
source IP address
source MAC address
- destination IP address
destination MAC address
10 Which of the following statements are true regarding the command ip route 172.16.1.0 255.255.255.0 172.16.2.1? (Choose three.)
- This command is used to set up a static route.
This command is used to set up a default route.
- This command is entered from global configuration mode.
- All packets intended for network 172.16.1.0 will be sent to gateway 172.16.2.1.
All packets intended for network 172.16.2.1 will be sent to gateway 172.16.1.0.
11 If dynamic routing is not configured on a router, how do routing table updates occur?
Link state advertisements are sent from other routers.
- Updates are made to the routing table by the administrator.
Best path information is communicated by network hosts.
The routing table is updated by neighboring routers.
12 Which of the following conditions must be met in order for a network to have converged?
The routers in the network are operating with dynamic routing protocols.
The routers in the network are operating with compatible versions of IOS.
The routers in the network are operating with the same routing tables.
- The routers in the network are operating with consistent routing knowledge.
13 Given the following commands:
Router(config)# router igrp 300
Router(config-router)# network 192.5.5.0
What can be concluded about the routing process on this router? (Choose three.)
- A distance vector routing protocol was used.
A link state routing protocol was used.
Routing updates will broadcast every 30 seconds.
- Routing updates will broadcast every 90 seconds.
Hop count is the metric used for route selection.
- Bandwidth, load, delay and reliability are the metrics used for route selection.
14 Given the following commands:
Router(config)# router rip
Router(config-router)# network 192.5.5.0
What can be concluded about the routing processes used on the router? (Choose three.)
A link state routing protocol was used.
- A distance vector routing protocol was used.
- Routing updates will broadcast every 30 seconds.
Routing updates will broadcast every 90 seconds.
- Hop count is the only metric used for route selection.
Bandwidth, load, delay, and reliability are used as metrics for route selection.
15 Which of the following factors should be considered when selecting a routing protocol to be implemented in an enterprise network? (Choose three.)
- bandwidth consumption
- router memory requirements
router location
spanning tree size
- router processor capability
flow control capability
16 Refer to the network topology shown. Which of the following commands will configure a route to the 172.31.3.0 network that the router will consider to be most reliable?
Montana(config)# ip route 172.31.3.0 255.255.255.0 172.31.4.1
- Montana(config)# ip route 172.31.3.0 255.255.255.0 s1
Utah(config)# ip route 172.31.3.0 255.255.255.0 172.31.2.1
Utah(config)# ip route 172.31.3.0 255.255.255.0 s1
17 Referring to the diagram, which commands will enable hosts on the Idaho E0 network to reach hosts on the E0 network of the Montana router? (Choose two.)
Montana(config)# ip route 172.31.5.0 255.255.255.0 172.31.5.1
- Montana(config)# ip route 172.31.3.0 255.255.255.0 172.31.4.1
Idaho(config)# ip route 172.31.5.0 255.255.255.0 172.31.4.1
- Idaho(config)# ip route 172.31.5.0 255.255.255.0 172.31.4.2
Idaho(config)# ip route 172.31.5.1 255.255.255.0 172.31.4.1
18 What are some of the advantages of using a link-state routing protocol instead of a distance vector routing protocol? (Choose two.)
The topology database eliminates the need for a routing table.
Frequent periodic updates are sent to minimize the number of incorrect routes in the topological database.
- Routers have direct knowledge of all links in the network and how they are connected.
- After the inital LSA flooding, they generally require less bandwidth to communicate changes in a topology.
Link-state protocols require less router processor power than distance vector protocols.
19 Given the command, RouterC(config)# ip route 197.5.2.0 255.255.255.0 192.10.1.1, what does the address 192.10.1.1 represent?
the source host
- the next hop router
the outbound interface
the destination network
20 Why is fast convergence desirable in networks that use dynamic routing protocols?
Routers will not allow packets to be forwarded until the network has converged.
Hosts are unable to access their gateway until the network has converged.
- Routers may make incorrect forwarding decisions until the network has converged.
Routers will not allow configuration changes to be made until the network has converged.
21 The routers shown in the graphic receive routing updates every 30 seconds by default. Select the commands that were configured on Router2 to achieve this update interval. (Choose two.)
- Router2(config)# router rip
Router2(config)# router igrp 200
Router2(config-router)# network 192.5.5.0 201.100.11.0 210.93.105.0
Router2(config-router)# network 192.5.5.0 255.255.255.0
Router2(config-router)# network 210.93.105.0 255.255.255.0
Router2(config-router)# network 201.100.11.0 255.255.255.0
- Router2(config-router)# network 192.5.5.0
Router2(config-router)# network 201.100.11.0
Router2(config-router)# network 210.93.105.0
CCNA 2 - Module 7 Exam Answers
1 Which command or set of commands will stop the RIP routing process?
• RouterB(config)# router rip
• RouterB(config-router)# shutdown
• RouterB(config)# router rip
• RouterB(config-router)# network no 192.168.2.0
*RouterB(config)# no router rip
• RouterB(config)# router no rip
2 When does a distance vector routing protocol set a hold-down timer on a route?
• when the metric value of the route decreases
*when the route is marked as inaccessible
• when the metric value for the route improves
• when a regular update is received from a neighboring router
3 Which of the following functions are performed by a router as routing information travels through the network? (Choose two.)
• advertise supported applications
*identify new destinations
• calculate packet speed
*identify invalid networks
4 What do distance vector algorithms require each router in the network to send?
• a partial routing table to each router in the LAN
• a partial routing table to each router in the WAN
*the entire routing table to each neighboring router
• the entire routing table to each router in the autonomous system
5
What actions will occur after RouterA loses connectivity to network 114.125.16.0? (Choose two.)
*RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterA.
• During the next update interval, RouterB will send a RIP update out both ports that includes the inaccessible network.
• During the next update interval, RouterC will send an update to RouterB stating that network 114.125.16.0 is accessible in 2 hops.
*Router C will learn of the loss of connectivity to network 114.125.16.0 from RouterB.
• RouterB will include network 123.92.76.0 and 136.125.85.0 in its update to RouterC.
6
Refer to the exhibit. Assuming default settings are configured, which routing protocol has been configured on the router?
• OSPF
*RIP
• EIGRP
• BGP
• Static
7 Which command will display RIP activity as it occurs on a router?
*debug ip rip
• show ip route
• show ip interface
• show ip protocols
• debug ip rip config
• show ip rip database
8 Which of the following methods does split horizon use to reduce incorrect routing information?
• Routing updates are split in half to reduce the update time.
*Information learned from one source is not distributed back to that source.
• New route information must be learned from multiple sources to be accepted.
• The time between updates is split in half to speed convergence.
• New route information is suppressed until the system has converged.
9
According to the router output from the show ip route command shown above, which of the following statements are true? (Choose two.)
• The metric to network 192.168.8.0 is 24.
*The hop count to a device on network 192.168.8.0 is 2.
• The total path cost to network 192.168.4.0 is the default value of 16.
*The logical address of the next router for network 192.168.1.0 is 192.168.3.1.
• The devices on network 192.168.5.0 cannot be reached as indicated by the 'C' label.
10 How would an administrator configure a static route for use if a primary route failed?
• configure the route with a metric greater than the default value
• configure the route and the router will activate it as needed
• configure the route to activate by using the redistribute static command
*configure the route with an administrative distance greater than the default value
11 Which statements describe RIP? (Choose three.)
• The maximum metric value is 255 hops.
*The maximum metric value is 15 hops.
*Routing updates occur every 30 seconds.
• Routing updates occur every 90 seconds.
*It is a distance vector routing protocol.
• It is a link state routing protocol.
12 A router has routes to several subnets of a classful network in its routing table. A default route is defined on the router but the ip classless command is disabled. If the router receives packets for a subnet that is not in its routing table but is in the same classful network as the other subnets, what will happen to the packets?
• The packets will be forwarded using the default route.
• The packets will be forwarded using a route to one of the other subnets of the classful network.
• A nonreachable message will be returned to the source.
*The packets will be discarded.
• The router will generate a new route to the subnetted network.
13
The administrator of the network depicted in the graphic would like to decrease the network's convergence time. How can this be accomplished?
• disable split horizon on the routers
• increase the update interval on the routers
*change the RIP holddown timer to 96 seconds
• change the RIP holddown timer to 226 seconds
14
If the passive interface command is enabled on the fa0/0 interface of Router E, which statements are true? (Choose two.)
• Router E will send all routing updates via interface fa0/0.
• Router E will ignore all routing updates learned via interface fa0/0.
*Router E will use routing updates learned via interface fa0/0.
*Router E will not send routing updates via interface fa0/0.
15 Which statements describe load balancing when RIP is configured as the routing protocol? (Choose two.)
*A router is allowed to take advantage of multiple best paths to a given destination.
• RIP uses the round robin approach in load balancing.
• RIP load balancing selects a single path to forward all data to the destination even though equal parallel paths exist.
• RIP load balancing is based on bandwidth first and then the hop count.
*Only one path to a destination can be statically assigned or dynamically calculated.
16
The graphic shows a network that is configured to use RIP routing protocol. Router2 detects that the link to Router1 has gone down. It then advertises the network for this link with a hop count metric of 16. Which routing loop prevention mechanism is in effect?
• split horizon
• error condition
• hold-down timer
*route poisoning
• count to infinity
17
Which of the following would be the correct command sequence to enable RIP on Router B for all connected networks?
RouterB# router rip
RouterB(router)# network 210.36.7.0
RouterB(router)# network 220.17.29.0
RouterB(router)# network 211.168.74.0
RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 211.168.74.0
RouterB(config-router)# network 199.84.32.0
RouterB(config)# configure router rip
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 199.84.32.0
RouterB(config-router)# network 211.168.74.0
RouterB(config)# router rip
RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 211.168.74.0
*RouterB(config-router)# network 198.16.4.0
RouterB(config-router)# network 210.36.7.0
RouterB(config-router)# network 220.17.29.0
18 When a routing table update is received by a router in a distance vector network, which of the following occurs?
*The hop count metrics for the enclosed routes are incremented.
• The update is forwarded to the gateway router for verification.
• Path entries are checked for routing loops.
• The hop count metrics for the enclosed routes are decremented.
• Static routes are updated with the new information.
19 The following line was displayed in the output of the show ip route command:
192.168.3.0/24 [120/2] via 192.168.2.2, 00:00:30, Serial0/0
What is the administrative distance of the enabled routing protocol?
• 2
• 30
• 100
*120
20 When does RIP send routing table updates? (Choose two.)
*periodically, every 30 seconds
• periodically, every 60 seconds
• periodically, every 90 seconds
*if optionally configured, when topology changes occur (triggered-update)
21 Which of the following can exist in a distance vector network that has not converged? (Choose three.)
*routing loops
*inconsistent traffic forwarding
• no traffic forwarding until system converges
• inconsistent routing table entries
*routing table updates sent to wrong destinations
22 What happens to a static route entry in a routing table when the outgoing interface is not available?
*The route is removed from the table.
• The router polls neighbors for a replacement route.
• The route remains in the table because it was defined as static.
• The router redirects the static route to compensate for the loss of the next hop device.
CCNA 2 - Module 8 Exam Answers
1 How does a source host use ICMP to confirm that a destination host is reachable?
• The source host sends an ICMP echo request to the destination router which responds with an ICMP echo reply confirming the reachability of the destination host.
• The source host sends a data packet and receives an ICMP host unreachable packet from the destination host if the data packet cannot be delivered.
• The source host sends an ICMP packet with a TTL value of 1 and receives an ICMP reply with a TTL value of 0 from the destination host.
*The source host sends an ICMP echo request and receives an ICMP echo reply from the destination host.
2 Which type of message is generated by a host when the ping command is entered?
*ICMP echo request
• ICMP echo reply
• UDP echo request
• UDP error message
3 Which of the following start the test of destination reachability?
*echo request issued by source
• echo reply issued by source
• echo request issued by destination
• echo reply issued by destination
4 Which two statements are true regarding ICMP? (Choose two.)
• ICMP provides reliability for the TCP/IP protocol stack.
*ICMP is a component of the TCP/IP protocol stack.
*ICMP notifies the sender that data transmission errors have occurred.
• ICMP is connection-oriented.
• ICMP messages are propagated to all intermediate devices.
5 How does ICMP improve data transfer reliability in IP networks?
• Each router in the path reads ICMP packets and uses the information to update routing tables. • ICMP can correct many network problems as they occur.
*ICMP error messages are returned to the sending device when a packet is dropped by a router.
• ICMP packets report the intermediary devices that a packet passed through before failure occurred.
6 Which layer protocols provide reliability for IP when needed?
• ICMP and ping
• RIP and TTL
*upper layer protocols
• lower layer protocols
• Internet layer protocols
• network access layer protocols
7 Which devices along a data transmission path are notified by ICMP when delivery failures occur?
*source devices only
• destination devices only
• intermediary devices
• source and destination devices
• source, intermediary, and destination devices
8 When a datagram is processed by a router on the path from source to destination, what happens to the value in the TTL field?"
• It is increased by one.
*It is decreased by one.
• It stays the same.
• It is reset to 0.
• Nothing.
9 Which condition could cause a fragmentation needed ICMP destination unreachable message to be sent?
• A low bandwidth WAN link has become congested with IP traffic.
*A packet is forwarded from a Token Ring network to an Ethernet network.
• A network is not reachable because of faulty routing information.
• The address specified by the sending host is nonexistent.
10
Workstation 1 sent a data packet to Workstation 4. It never arrived because Fa0/0 interface went down on Router C. How will the devices handle this failure?
• Workstation 4 will send an error message to Router C and Workstation 1 that it did not receive the packet.
*Router C will use ICMP to send a message back to Workstation 1 indicating that the packet could not be delivered.
• Router C discards the packet without providing notification to any device.
• Router C uses ICMP to correct the failure and transmits the data to Workstation 4.
• Workstation 1 will use ICMP to correct the problem and then notify Router C to continue the transmission.
11 Which three conditions must be met in order for host to host communication over an internetwork to occur on IP networks? (Choose three.)
• The routing protocols configured on the source and destination networks must be the same.
*A default gateway must be properly configured on the hosts and local networks.
*Intermediary devices, such as routers, must be present on the network and have knowledge of how to reach the destination network.
• The source and destination host subnet masks must match.
*The IP addresses of the hosts must be in the same network or subnet as their respective gateway devices.
CCNA 2 - Module 9 Exam Answers
1
After issuing the command trace route 192.168.4.2 from Router A, the following information is returned
Tracing the route to Router_D (192.168.4.2)
1 Router_B (192.168.2.2) 16 msec 16 msec 16 msec
2 * * *
3 * * *
What can be concluded about the network shown in the graphic based on the output given?
• Network 192.168.5.0 is missing from the routing table on Router
*There is a problem with the connection between Router B and Router C.
• Router C is not running CDP.
• Some of the routers are non-Cisco devices.
• Router B was not able to return ICMP TEMs to Router A
2 Which of the following would be the default administrative distance of a static IP route that references the IP address of the next hop?
• 0
*1
• 5
• 20
3 After issuing the show interfaces command, a technician notices the line "Serial1 is down, line protocol is down" in the output. Which of the following are possible reasons for this message output? (Choose three.)
• There is a mismatch in the encapsulation type on both ends of the link.
*A Layer 1 issue exists.
*An interface problem exists.
• The clockrate was not set during configuration.
*There is no usable media for the protocol.
• Keepalive messages are not being sent.
4 Which three correctly pair a routing metric with its description? (Choose three.)
*hop count - the number of routers traversed to reach a destination
• bandwidth - the amount of time it takes a packet to travel a link
*load - the amount of activity on a link
• delay - the link speed
*reliability - the error rate on a link
5
When issuing the show interfaces serial1 command, a network administrator receives the output shown in the graphic. What are the possible causes of an increase in the number of input errors? (Choose three.)
• There could be Layer 3 addressing problems.
*There could be a problem with faulty telephone equipment.
*The router hardware could be defective.
• There is an incorrectly configured encapsulation on the interface.
*There could be a problem with the cabling.
6 Which ICMP message type notifies source hosts that a receiving host or network is not available?
• time exceeded
• redirect
*destination unreachable
• source quench
• parameter problem
• echo reply
7 The show interfaces command provides line and protocol status information. Which of the following conditions would never occur in the output of this command?
• serial1 is up, line protocol is up
• serial1 is up, line protocol is down
• serial1 is down, line protocol is down
*serial1 is down, line protocol is up
• serial1 is administratively down, line protocol is down
8
The network administrator shown in the exhibit can ping the E0 interface of the HAR router, but the telnet intranet.xyz.com command issued from the administrator's workstation fails to open a session with the intranet.xyz.com server. What are two possible causes of this problem? (Choose two.)
*upper-layer application problems
*domain name system problems
• IP addressing problems on the HAR router
• clock rate problems on the HAR router serial interface
• ICMP connectivity problems
9 The network administrator is using a PC to access a router via the router console port. Both the PC and the router are powered on and a cable has been connected between them. However, a session cannot be established. Which steps might fix this problem? (Choose two.)
*Verify the cable is properly connected at each end.
• Reseat the network card in the PC.
*Verify the cable is the correct type.
• Verify that a password has been set on the console line.
• Check the transceiver for link lights.
• Reseat the console card on the router
10 Which command will display routing table information about all known networks and subnetworks?
• Router# show ip interfaces
• Router# show ip connections
*Router# show ip route
• Router# show ip networks
11 A network technician has discovered that a router in the network can no longer be reached. The technician attempts to verify Layer 1 functionality, but is unable to physically inspect the cables. Which command can be used to determine the type of cable connected to the router?
• Router# show interfaces
*Router# show controllers serial
• Router# show ip route
• Router# show ip protocol
• Router# show version
• Router# show running-config
12 During the lookup process when forwarding a packet, a router checks its routing table for the best path to the destination. If a route has an administrative distance of 0, what does this indicate to the router?
• The packet should be discarded.
• The destination is unreachable.
*The destination is a directly connected network.
• The source of the update for that route is unreliable.
13 Which command will verify the functionality of all seven layers of the OSI model on a network host?
• ping
• debug
*telnet
• traceroute
14
After issuing the show interfaces serial1 command, an administrator notices an increasing number of carrier transitions. What are the possible causes for this increase? (Choose two.)
• There is an incorrect encapsulation configured on the interface.
*There could be an interruption in the line by the service provider.
*There is a faulty switch or CSU/DSU.
• There is noise on the serial line.
15
Consider the RIP network shown in the diagram. Which entries would be listed in the routing table of Router A?
• R 192.168.5.2[120/1] via 192.168.15.0, 00:00:09, Serial0
• R 192.168.15.0[120/1] via 192.168.5.2, 00:00:13, Serial1
*R 192.168.15.0[120/1] via 192.168.5.1, 00:00:13, Serial0
• R 192.168.5.1 [120/1] via 192.168.5.2 00:00:29, Serial1
• R 192.168.15.0 [120/1] via 192.168.5.2, 00:00:29, Serial1
• R 192.168.5.1 [120/1] via 192.168.5.2 00:00:18, Serial0
• R 192.168.15.2 [120/1] via 192.168.5.2, 00:00:18, Serial
16 Which items would be displayed when the show ip protocols command is executed? (Choose three.)
*sources of routing updates
*networks being advertised
• routing protocol up or down
• configured routed protocols
• Layer 2 status of the interface
*update timer values
17 Which two are true regarding the debug commands? (Choose two.)
• Debug commands may be issued from the user EXEC prompt.
*The command undebug all will turn off all debug operations.
• By default, the router sends the debug output and messages to the telnet session.
*The high processor overhead incurred using debug may disrupt normal router operation.
• The debug all command provides a summary view of router activity and can be used frequently for troubleshooting.
• The show debugging command will display current events such as traffic on an interface and error messages generated by nodes on the network.
18 A network administrator suspects that a network is not being included in the routing updates. Which command will provide information on when the next update is due and which networks are advertised in the update?
• Router# show interfaces
• Router# show controllers serial
*Router# show ip protocols
• Router# show ip route
• Router# show running-config
19 Which of the following is a problem at the physical layer of the OSI model?
• incorrect file formatting
• incorrect encapsulation on a serial interface
• incorrect routing protocol
*incorrect cable type
20
When the show cdp neighbors command is issued from Router C, which devices will be displayed in the output?
• D, SWH-2
• A, B, D
• SWH-1, SWH-2
*B, D
• SWH-1, A, B
• A, B, D, SWH-1, SWH-2
21 Which of the following are advantages of using a static route? (Choose three.)
*secure operation
• highly adaptable
• low maintenance configuration
*low processor overhead
*precise control of path selection
22 Which of the following commands can be used to statically configure default routes? (Choose two.)
• ip static-route
*ip route
• ip network-route
*ip default-network
• ip default-static
23 Why does a router build a routing table? (Choose two.)
*to list available routes for forwarding data
• to map local Layer 2 addresses to the remote Layer 3 destination address
• to dynamically send periodic updates regarding the router's status
• to prevent routing loops when redundant links are added to the network
*to select the best path to a destination
24 Which of the following lines from the show interfaces output would indicate a Layer 2 problem?
• Serial1 is up, line protocol is up.
*Serial1 is up, line protocol is down.
• Serial1 is down, line protocol is down.
• Serial1 is administratively down, line protocol is down.
CCNA 2 - Module 10 Exam Answers
1 A computer programmer is developing software that requires a reliable stream of data. Which protocol can be used in the software design to eliminate the need for building error detection and recovery into the application program?
*TCP
• IP
• ICMP
• UDP
• HTTP
2 Which of the following would an administrator do to defend against a denial of service SYN flooding attack? (Choose two.)
• Hide the source of incoming IP addresses.
*Decrease the connection timeout period.
• Synchronize all host communication.
*Increase the connection queue size.
• Flood the network with false SYN requests.
3 What is the purpose of Positive Acknowledgment and Retransmission (PAR)?
• PAR allows the presentation layer to request that data be resent in a format the destination host can process.
• PAR provides a mechanism for the receiving device to request that all segments be retransmitted if one segment is corrupt.
*PAR helps ensure that a number of data segments sent by one host are received by another host before additional data segments are sent.
• PAR is used to renegotiate the window size during the synchronization process.
4 Which of the following describe types of port numbers that can be represented in the header of TCP and UDP segments? (Choose two.)
• connectionless
*well-known
• operational
*dynamic
• static
5 Why is TCP considered a connection-oriented protocol?
• It establishes a virtual connection between hosts using a two-way handshake.
• It uses IP to guarantee delivery of packets between hosts.
*It requires hosts to go through a synchronization process prior to data transmission.
• It creates a connection that depends on application layer protocols for error detection.
6 What is the purpose of using port numbers in the transport layer?
• to identify the segment as being either TCP or UDP
• to provide reliability during data transport
• to identify the interface port number used by the router when forwarding data
*to track multiple conversations that occur between hosts
7 What does TCP use to ensure reliable delivery of data segments?
• upper layer protocols
• lower layer protocols
*sequence numbers
• port numbers
8 Which authority has control over the assignment of port numbers for applications?
• IEEE
*IANA
• InterNIC
• Software Developers Association
9 Which of the following describes how TCP adds reliability to communication? (Choose two.)
*Hosts using TCP set up virtual circuits at the beginning of the transmission using the three-way handshake.
• Hosts using TCP set the error-checking frequency at the beginning of the transmission and maintain this frequency for the duration.
*The receiving host acknowledges that it has received the expected number of segments and requests additional data.
• The receiving host acknowledges any incorrectly received data and requests retransmission of damaged or missing bytes.
10 Which address is dynamically assigned by the source host when forwarding data?
• destination IP address
• destination port number
• default gateway address
• source IP address
*source port number
11 Which of the following are functions of the TCP protocol? (Choose three.)
• translation of data
*synchronization
• path determination
*flow control
• data representation
*reliability
12 Which transport layer unit of information places the port number in the header?
data
*segment
• packet
• frame
• bit
13 What is the purpose of the three-way handshake that occurs between hosts using TCP as the transport layer protocol?
• to determine the number of packets that can be sent before an acknowledgment is required
• to allow a host to forward data to a router
*to establish a round trip connection between sender and receiver before data is transferred
• to provide a mechanism for data encryption and compression
14 At which point in the transmission process are segments numbered?
• when received
• when reassembling
*before transmission
• while negotiating window size
15 What type of segment and data is shown in the graphic?
• a UDP segment carrying e-mail traffic
• a TCP segment carrying FTP traffic
• an IP segment carrying FTP traffic
• a UDP segment carrying web traffic
*a TCP segment carrying web traffic
• an IP segment carrying e-mail traffic
16 When a host receives a data segment, what allows the host to determine which application should receive the segment?
• IP source address
• IP destination address
• PAR
• sliding window
*port number
• SYN packet
17 Which statement is true regarding the TCP protocol?
• Flow control at the transport layer is provided by adding a sequence number to each segment.
*A sliding window allows for communicating devices to negotiate the amount of unacknowledged data that can be sent.
• A window size of 1 would require a receiving device to send ACK 1 after the Segment 1 has been received.
• TCP is used by sending hosts to segment large data files prior to transmission while IP is used by receiving host to reassemble the smaller segments.
18 What is used by both TCP and UDP when creating a segment?
• IP address
• MAC address
• IPX address
*socket or port number
• acknowledgment number
• sequence number
19 What is used by UDP to determine if the data or header has been transferred without corruption?
• lower layer protocols
*checksum
• PAR
• sliding window
• acknowledgment and retransmission
• IP
20 How are originating source port numbers assigned during the data encapsulation process?
• assigned manually by the user when starting the application
*assigned dynamically by the source host
• assigned by the routing protocol during the lookup process
• assigned by the destination host during session negotiation
21 Which of the following protocols uses UDP for transport layer services?
• SMTP
• HTTP
*DNS
• FTP
22 Which of the following determines the amount of data that can be sent without an acknowledgment when sending a TCP segment?
• segment number
• priority number
*window size
• value in the length field
• value in the port field
• acknowledgment number
23 During the encapsulation process, in which order are the IP address, MAC address, and port number assigned when the router is establishing communication with the TFTP server?
• IP address, MAC address, port number
• MAC address, IP address, port number
*port number, IP address, MAC address
• port number, MAC address, IP address
24 Which of the following describes a type of denial of service attack designed to exploit the normal function of the TCP three-way handshake?
*A host sends a packet with a spoofed source IP address.
• A host sends a packet with an incorrect destination IP address.
• A source sends a packet containing a garbled header.
• A host sends an oversized packet that fills the memory buffers of the destination host.
• A host sends a packet that contains a virus.
• A host sends a packet that contains a worm.
CCNA 2 - Module 11 Exam Answers
1 Which statements are true regarding the significance of the access control list wildcard mask 0.0.0.7? (Choose two.)
• The first 29 bits of a given IP address will be ignored.
*The last 3 bits of a given IP address will be ignored.
• The first 32 bits of a given IP address will be checked.
*The first 29 bits of a given IP address will be checked.
• The last 3 bits of a given IP address will be checked.
2 Which of the following parameters can ACLs use to filter traffic? (Choose three.)
• packet size
*protocol suite
*source address
*destination address
• source router interface
• destination router interface
3 Choose the commands that will correctly configure a standard ACL. (Choose two.)
*Router(config)# access-list 97 permit host 192.5.5.1
*Router(config)# access-list 32 permit 210.93.105.3 0.0.0.0
• Router(config)# access-list 148 permit 201.100.11.2 0.0.0.0
• Router(config)# access-list 107 permit host 192.5.5.1 213.45.27.0 0.0.0.255 eq 23
• Router(config)# access-list 10 permit tcp 192.5.5.1 0.0.0.255 201.100.11.0 0.0.0.255 eq 80
4 Select the statements that describe ACL processing of packets. (Choose three.)
*An implicit deny any rejects any packet that does not match any ACL statement.
*A packet can either be rejected or forwarded as directed by the statement that is matched.
• A packet that has been denied by one statement can be permitted by a subsequent statement.
• A packet that does not match the conditions of any ACL statements will be forwarded by default.
*Each statement is checked only until a match is detected or until the end of the ACL statement list.
• Each packet is compared to the conditions of every statement in the ACL before a forwarding decision is made.
5 Which of the following are reasons to use ACLs? (Choose three.)
*to provide a basic level of security for network access
• to speed up network performance by filtering priority packets
*to preserve bandwidth by providing a mechanism for traffic flow control
• to decide which packets are forwarded or blocked at the router console port
*to screen certain hosts to either allow or deny access to part of a network
• to allow all packets passing through the router access to all parts of the network
6
Assuming the ACL in the graphic is correctly applied to an interface, what effect will the ACL have on network traffic?
• All traffic to network 172.16.0.0 will be denied.
• All TCP traffic will be permitted to and from network 172.16.0.0.
*All telnet traffic from the 172.16.0.0 network to any destination will be denied.
• All port 23 traffic to the 172.16.0.0 network will be denied.
• All traffic from the 172.16.0.0 network will be denied to any other network.
7 Choose the command that will correctly configure a standard ACL.
• Router# access-list 10 permit any
• Router# access-list 101 permit any
*Router(config)# access-list 10 permit any
• Router(config)# access-list 101 permit any
• Router(config)# access-list 10 permit any any
8
Select the commands that will apply the ACL in the diagram to filter traffic going to the 192.168.2.0 network.
• Router1# configure terminal
Router1(config)# access-list 10 in E0
• outer1(config)# interface ethernet 0
Router1(config-if)# access-list 10 in
• Router2(config)# interface s1
Router2(config-if)# ip access-group 10 out
*Router2(config)# interface ethernet 0
Router2(config-if)# ip access-group 10 out
• Router1(config)# interface ethernet 0
Router1(config-if)# ip access-group 10 out
• Router2# configure terminal
Router2(config)# access-group 10 out
9
Assuming the ACL in the graphic is correctly applied to an interface, what effect will this ACL have on network traffic?
• Host 192.168.15.4 will be denied ftp access to any destination, but will be permitted all other access.
• All ftp traffic to host 192.168.15.4 will be denied.
*All traffic from that interface will be denied.
• No traffic will be denied because a "permit" statement does not exist in this ACL.
10
Refer to the exhibit. The network administrator has connectivity to the routers and networks in the diagram. An ACL has been created to allow the network administrator FTP access to the webserver. This ACL must also deny FTP access to the server from the rest of the hosts on the LAN. Which interface in the exhibit is the recommended location to apply the ACL?
*FastEthernet 0/0 on the Carlisle router
• Serial 0/0 on the Carlisle router
• Serial 0/1 on the Mt. Holly router
• FastEthernet 0/0 on the Mt. Holly router
11 Select the correct statements about extended ACLs. (Choose two)
• Extended ACLs use a number range from 1-99.
• Extended ACLs end with an implicit permit statement.
*Extended ACLs evaluate the source and destination addresses.
*Port numbers can be used to add greater definition to an ACL.
• Multiple ACLs can be placed on the same interface as long as they are in the same direction.
12 The following commands were entered on a router:
Router(config)# access-list 2 deny 172.16.5.24
Router(config)# access-list 2 permit any
What can be concluded about this set of commands?
• The access list statements are misconfigured.
• All nodes on 172.16.0.0 will be denied access when these statements are applied.
*The default wildcard mask, 0.0.0.0 is assumed.
• The default wildcard mask 255.255.255.255 is assumed.
13 Where should a standard access control list be placed?
• close to the source
*close to the destination
• on an Ethernet port
• on a serial port
14 A router that has two Ethernet interfaces and one serial interface is configured to route both IP and IPX. What is the maximum number of IP ACLs that can be configured to filter packets on this router?
• 1
• 2
• 3
*6
• 12
15 Which statement is true regarding wildcard masks?
• The wildcard mask and subnet mask perform the same function.
• The wildcard mask is always the inverse of the subnet mask.
*A "0" in the wildcard mask identifies IP address bits that must be checked.
• A "1" in the wildcard mask identifies a network or subnet bit.
16 ACL statements operate in sequential, logical order. If a condition match is true, the rest of the ACL statements are not checked. If all of the ACL statements are unmatched, what happens to the packet?
• The packets will be placed in a buffer and forwarded when the ACL is removed.
• The packets will be sent to the source with an error notification message.
• The implicit permit any statement placed at the end of the list will allow the packets to flow through uninhibited.
*The implicit deny any statement placed at the end of the list will cause the packets to be dropped.
17 Which of the following matches an ACL identification number with the correct protocol?(Choose three.)
• 0 - standard IP
*99 - standard IP
*100 - extended IP
• 210 - extended IP
• 678 - extended IPX
*888 - standard IPX
18 The router IOS tests each condition statement in an ACL in sequence. Once a match is made, which of the following occurs? (Choose two.)
• The entire ACL must be deleted and recreated.
*The accept or reject action is performed.
• The packet is forwarded to the next hop.
*The remaining ACL statements are not checked.
• The router goes through the list again to verify that a match has been made.
19
Create a standard ACL that will deny traffic from 192.5.5.25 to the 210.93.105.0 network but will allow traffic from all other hosts. (Choose two.)
• Router(config)# access-list 22 deny 192.5.5.25 0.0.0.0
• Router(config)# access-list 22 deny host 192.5.5.25 0.0.0.0
Router(config)# access-list 22 permit any any
*Router(config)# access-list 22 deny 192.5.5.25 0.0.0.0
Router(config)# access-list 22 permit any
*Router(config)# access-list 22 deny host 192.5.5.25
Router(config)# access-list 22 permit any
• Router(config)# access-list 22 deny 192.5.5.0 0.0.0.255
Router(config)# access-list 22 permit any
1
Which protocol is used by e-mail servers to communicate with each other?
FTP
HTTP
TFTP
SMTP ***
POP
SNMP
2
Which command displays the active configuration file of a router?
Display startup-config
Display running-config
Show running-config ***
Show startup-config
3
What are the two basic functions used by a router to relay packets?
Filtering and switching
Path determination and filtering
Path determination and switching ***
Traffic analysis and filtering
4
Which of the following are advantages of using a static route? (Choose three.)
secure operation
highly adaptable
low maintenance configuration ***
low processor overhead ***
precise control of path selection ***
5
Which of the following are TCP services? (Choose three.)
address resolution
end-to-end communication ***
flow control ***
reliability of data delivery ***
path determination
data representation
6
What is the purpose of media access control?
It identifies which workstation has sent a frame.
It determines which Layer 3 protocol should handle a frame.
It identifies which Ethernet frame format to use on the network.
It determines which workstation on a shared medium LAN is allowed to transmit data. ***
7
Which of the following IP addresses are broadcast addresses if the subnet mask is 255.255.255.240? (Choose three.)
75.32.75.15 ***
205.16.35.11
199.254.129.111 ***
129.130.17.143 ***
135.22.55.93
105.33.62.213
8
What is the default state of the interfaces on a router?
up, line protocol down
down, line protocol down
adminstratively down, line protocol down ***
up, line protocol up
9
How many bits are in IPv6 addresses?
16
32
64
96
128 ***
258
10
Which OSI layer defines the functions of a router?
physical
data link
network ***
transport
session
11
What are the primary uses of Telnet? (Choose two.)
routing of data packets
transfer of data between end users
verification of application layer connectivity ***
connecting to remote network devices ***
12
Routers have different types of memory. Choose the answer that describes flash memory.
provides working storage
stores a fully functional IOS image ***
stores the startup configuration file
initializes the code used to boot the router
13
Which of the following is true regarding CDP and the graphic shown?
CDP running on Router D will gather information about routers A, B, C, and E.
By default, Router A will receive CDP advertisements from routers B and C. ***
If routers D and E are running different routing protocols, they will not exchange CDP information.
Router E can use CDP to identify the IOS running on Router B.
14
Which of the following describes path determination at the network layer?
router compares available ARP table information to select the best path
router uses routed protocol to determine the best path for data transmission
router compares available routing table information to select the best path ***
router uses a routing protocol to compare LAN equipment to route data through
switch compares available routing table information to select the best path
15
Which command turns on a router interface?
Router(config-if)# enable
Router(config-if)# no down
Router(config-if)# s0 active
Router(config-if)# interface up
Router(config-if)# no shutdown ***
If dynamic routing is not configured on a router, how do routing table updates occur?
Link state advertisements are sent from other routers.
Updates are made to the routing table by the administrator. ***
Best path information is communicated by network hosts.
The routing table is updated by neighboring routers.
17
What does TCP use to begin the three-way handshaking process?
The destination host sends an ACK segment.
The sending host sends a SYN segment. ***
The sending host sends a SYN and ACK segment.
The destination host sends a SYN segment.
18
Which statement accurately describes the way DHCP assigns IP addresses?
The network administator must re-assign a previously assigned address to the DHCP pool once a host no longer requires it.
DHCP offers a many-to-one ratio of IP addresses to users.
DHCP only allows users to obtain IP addresses if users have a profile in the DHCP pool.
DHCP has the ability to reclaim an IP address after a host workstation releases it. ***
19
Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?
binary adding
hexadecimal anding
binary division
binary multiplication
binary ANDing ***
20
At which layer of the TCP/IP model does Telnet operate?
application ***
presentation
session
transport
internet
network access
21
Four concurrently running Telnet connections have been initiated. Which commands would enable the network administrator to view all of them? (Choose two.)
Router> show configuration
Router> show connections
Router> show sessions ***
Router# show configuration
Router# show connections
Router# show sessions
22
How many IP addresses can be assigned to host devices on each subnet of a Class B network with a subnet mask of 255.255.255.248?
3
5
6 ***
8
30
8190
23
Pings between Atlanta and Dallas are successful. If a hostname table or DNS connection is not available, which command will successfully establish a remote connection from Atlanta to Dallas via Telnet?
Atlanta> connect Dallas
Atlanta> 197.72.3.2 ***
Atlanta# 206.157.85.1
Atlanta# telnet Dallas
24
When does a distance vector routing protocol set a hold-down timer on a route?
when the metric value of the route decreases
when the route is marked as inaccessible ***
when the metric value for the route improves
when a regular update is received from a neighboring router
25
Which of the following is considered to be a multi-port bridge?
hub
switch ***
router
repeater
26
All numbering systems have a beginning or first digit and an end or last digit. Select the first and last digits representing Base 16, hexadecimal. (Choose two.)
0 ***
A
9
F ***
15
27
Which of the following protocols operate at the application layer of the OSI model? (Choose two.)
FTP ***
TCP
UDP
HTTP ***
28
Which transport layer unit of information places the port number in the header?
data
segment ***
packet
frame
bit
29
For which condition will the ARP protocol be used?
The destination IP address is unknown. ***
The destination MAC address is unknown.
The source IP address is unknown.
The source MAC address is unknown.
30
Which protocol can be used to load or retrieve Cisco IOS images to or from a router?
SNMP
TFTP ***
UDP
TCP
31
What command enables CDP on the interface of a router?
Router(config-if)# cdp enable ***
Router(config-if)# cdp run
Router(config-if)# cdp start
Router(config-if)# cdp config
32
After issuing the command traceroute 192.168.4.2 from Router A, the following information is returned.
Tracing the route to Router_D (192.168.4.2)
1 Router_B (192.168.2.2) 16 msec 16 msec 16 msec
2 * * *
3 * * *
What can be concluded about the network shown in the graphic based on the output given?
Network 192.168.5.0 is missing from the routing table on Router A.
There is a problem with the connection between Router B and Router C. ***
Router C is not running CDP.
Some of the routers are non-Cisco devices.
Router B was not able to return ICMP TEMs to Router A.
33
What happens to a MAC address in a frame as it passes from router to router on its way to its destination?
Nothing, it remains the same.
MAC addresses are not passed from router to router.
It changes from router to router. ***
It keeps the MAC address of the first router it passes through.
34
An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:" Why did this dialog appear?
There was a POST failure.
The incorrect IOS loaded.
There was an error in the startup configuration file.
The configuration register was set to ignore NVRAM. ***
35
Which criteria identify a Class B address? (Choose two.)
decimal number in first octet between 127 - 191
decimal number in first octet between 128 - 192
decimal number in first octet between 128 - 191 ***
first bit of binary IP address is 0
first two bits of binary IP address are 10 ***
first three bits of binary IP address are 110
36
Which of the following show commands would display the location of the IOS boot image?
show flash
show NVRAM
show version ***
show running-config
show startup-config
37
What is the purpose of the IOS enable secret command?
To allow the user to establish password protection on incoming Telnet sessions
To allow the user to establish password protection on the console terminal
To enable the user to access the User mode
To enable the user to enter a password that will be encrypted ***
38
Which of the following describes shared media environment?
a collision free environment made up of systems on the same medium
multiple hosts have access to the same cable ISP system
multiple hosts have access to the same medium. ***
multiple router environment in a mesh topology
39
What is the purpose of Positive Acknowledgment and Retransmission (PAR)?
PAR allows the presentation layer to request that data be resent in a format the destination host can process.
PAR provides a mechanism for the receiving device to request that all segments be retransmitted if one segment is corrupt.
PAR helps ensure that a number of data segments sent by one host are received by another host before additional data segments are sent. ***
PAR is used to renegotiate the window size during the synchronization process.
40
Which of the following describes the function of the Domain Name Service system?
It associates IP addresses to domain names. ***
It associates MAC addresses to domain names.
It associates DHCP addresses to domain names.
It associates TCP port numbers to domain names.
41
Which device imposes boundaries on broadcast traffic?
bridge
repeater
router ***
transceiver
42
The graphic depicts two workstations attached to two different hubs that are separated by a repeater. How many collision domains exist in this scenario?
one ***
two
three
four
five
43
Which TCP/IP layer provides services that support a logical connection between the sending and receiving hosts?
application
network
IP
transport ***
presentation
session
44
What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?
100 meters ***
185 meters
300 meters
500 meters
45
Which of the following types of networks pass a token sequentially to each host? (Choose two.)
Ethernet
Token Ring ***
FDDI ***
Frame Relay
ISDN
46
Identify the correct pairing of protocols and their classifications.
Routed - IP, IGRP
Routed - RIP, OSPF
Routing - IPX, RIP
Routing - OSPF, IGRP ***
47
Which Ethernet data link layer frame comparison is correct?
higher speed networks require more fields be included in the frame
the faster speed frame structures are incompatible with the slower speed networks
the frame structure changes with each higher speed, however, they are compatible with slower speeds
all speeds of Ethernet have nearly identical frame structures ***
48
Which switching mode describes a switch that transfers a frame as soon as the destination MAC address is read?
fragment-free
cut-through ***
store-and-forward
latency forwarding
49
Which TCP/IP model layer supports both LAN and WAN technologies?
network access layer
internet layer ***
transport layer
application layer
50
What is the first step a Cisco router performs after it is powered up?
Empties contents of NVRAM
Looks for the configuration file
Performs a POST ***
Starts the operating system
51
Which of the following are functions of RAM? (Choose three.)
contains startup configuration file
stores routing table ***
holds fast switching cache ***
retains contents when power is removed
stores running configuration file ***
52
How does a network device determine a collision has occurred on an Ethernet network?
The voltage of the signal on the networking media will increase. ***
The voltage of the signal on the networking media will decrease.
The voltage of the signal on the networking media will remain the same.
The voltage of the signal on the networking media will increase and decrease rapidly.
53
If a network node is connected to a switch port using full-duplex transmission, which of the following conditions exists?
a two-node collision domain
no collision domain ***
a multi-port collision domain
no broadcast domain
a two-node broadcast domain
54
Given the IP address 10.122.200.77 and subnet mask 255.255.255.224, what is the subnet address?
10.0.0.0
10.0.0.32
10.0.0.64
10.122.200.0
10.122.200.32
10.122.200.64 ***
55
Which command will display routing table information about all known networks and subnetworks?
Router# show ip interfaces
Router# show ip connections
Router# show ip route ***
Router# show ip networks
56
Which of the following statements describe distance vector routing updates? (Choose three.)
Topology changes are transmitted to all routers at once.
Routers send their entire routing tables in distance vector updates. ***
Path cost metrics for each route are included in the updates. ***
Periodic updates are sent directly to every router in the network.
Routing updates are sent periodically to adjacent routers. ***
Routers send only the state of their own links in distance vector updates.
57
How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?
4
5 ***
8
10
58
What type of routing uses information that is manually entered into the routing table?
dynamic
interior
static ***
standard
59
Which two statements are true regarding ICMP? (Choose two.)
ICMP provides reliability for the TCP/IP protocol stack.
ICMP is a component of the TCP/IP protocol stack.
ICMP notifies the sender that data transmission errors have occurred. ***
ICMP is connection-oriented.
ICMP messages are propagated to all intermediate devices. ***
60
Which of the following are benefits of creating a subnetwork structure in an IP network? (Choose three.)
permits network address duplication
allows for address flexibility ***
prevents address replication
provides broadcast containment ***
adds low-level security ***
allows for more network hosts available
1
An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:" Why did this dialog appear?
There was a POST failure.
The incorrect IOS loaded.
There was an error in the startup configuration file.
*The configuration register was set to ignore NVRAM.
2
What are the major characteristics of a wide area network? (Choose three.)
*connect devices separated by wide geographical areas
*includes technologies of FDDI and Ethernet
uses serial connections to access bandwidth
*common carriers are needed for connections
type of connection between a router and a switch
3
If the config-register on a router is set to 0x2102, where is the first place the router will look for boot system commands?
RAM
ROM
Flash
*NVRAM
4
Which of the following are valid static IP routes? (Choose three.)
RouterB(config)# ip route 192.168.5.0 255.255.255.0 S1
*RouterC(config)# ip route 192.168.1.0 255.255.255.0 S1
*RouterA(config)# ip route 192.168.3.0 255.255.255.0 192.168.2.2
RouterB(config)# ip route 192.168.1.0 255.255.255.0 192.168.2.2
*RouterC(config)# ip route 192.168.2.0 255.255.255.0 192.168.4.1
RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.2.1
5
Refer to the network and routing table entries shown in the graphic. What will happen when a packet destined for network 192.66.7.0 is received by Router A?
*It will be forwarded through interface S1.
It will be forwarded to the default route.
It will be directed toward the Internet.
It will be discarded.
6
A network administrator trying to deny Telnet traffic from the 192.5.5.0 network to the 201.100.11.0 network entered the commands shown in the graphic. When monitoring the network, the administrator noticed that Telnet packets were still passing between those networks. What is the cause?
The router ignored this type of traffic because it required a standard access list to be configured instead of an extended one.
The wrong port was configured for the ACL so Telnet traffic was still allowed.
*The access list has not been assigned to an interface.
The permit ip any any allowed all traffic to pass regardless of the other statements listed in this ACL.
7
Which of the following is the correct flow of routines for a router startup?
*load bootstrap, load IOS, apply configuration
load bootstrap, apply configuration, load IOS
load IOS, load bootstrap, apply configuration, check hardware
check hardware, apply configuration, load bootstrap, load IOS
8
Which of the following would cause the "Message Of The Day" banner to appear? (Choose three.)
*telnetting into the router
initiating a debug session
configuring a router for the first time
using the Aux port to check the current configuration
*using the console port to check the current configuration
9
When must a router serial interface be configured with the clock rate command?
*when the interface is functioning as a DTE device
when the interface timers have been cleared
when the connected DTE device is shut down
when the interface is functioning as a DCE device
10
The internetwork needs to communicate between the hosts connected to the E0 interface of the Utah router and hosts connected to the E0 interface of the Idaho router. The hosts should also have connectivity to the Internet. Which commands must be configured in order to enable this communication? (Choose three.)
Idaho(config)# ip route 172.31.1.0 255.255.255.0 172.31.2.1
*Idaho(config)# ip route 0.0.0.0 0.0.0.0 s0
*Idaho(config)# ip route 172.31.2.0 255.255.255.0 172.31.2.2
Utah(config)# ip route 172.31.3.0 255.255.255.0 172.31.2.1
*Utah(config)# ip route 172.31.3.0 255.255.255.0 s1
Utah(config)# ip route 0.0.0.0 0.0.0.0 s0
11
The network shown in the graphic is using RIP as the routing protocol. Which of the following are true regarding the network discovery process that will occur for this network? (Choose three.)
*The Palm Beach router will show networks 192.168.7.0 and 192.168.8.0 as directly connected networks.
All of the routers will have direct knowledge of the exact topology of the entire network.
*The Key West router will forward routing table information to the Miami and Palm Beach routers.
The Miami router will learn about network 192.168.1.0 from the Key West router.
*If network 192.168.4.0 becomes unavailable, the Key West router will notify the other routers of this fact in the next update.
12
Which of the following are necessary for basic network communication to occur between hosts that will run such applications as Telnet, web browsers, and e-mail? (Choose three.)
*TCP/IP must be installed and properly configured on each device.
Multiple subnets must be configured on the router to ensure accurate delivery.
*A default gateway must be configured for datagrams to travel outside of the LAN.
The hosts must be directly connected to a switch to travel outside of the LAN.
*To ensure accurate delivery, a router must be configured and accessible by hosts on the network.
13
When would the ROM monitor mode be used? (Choose two.)
maintaining routing configuration settings
*modifying the IOS image stored in Flash
running a limited IOS feature set
*performing the bootstrap process
14
Why is it useful to have an interface description?
A user can telnet to the router using the interface description.
The interface description is a shortcut way to edit the running-config.
*The interface description helps identify distant network connections.
The interface will remain inactive until an interface description is applied.
15
After issuing the show interfaces command, a technician notices the line "Serial1 is down, line protocol is down" in the output. Which of the following are possible reasons for this message output? (Choose three.)
There is a mismatch in the encapsulation type on both ends of the link.
*A Layer 1 issue exists.
*An interface problem exists.
The clockrate was not set during configuration.
*There is no usable media for the protocol.
Keepalive messages are not being sent.
16
The following line was displayed in the output of the show ip route command.
R 192.168.3.0/24 [120/3] via 192.168.2.2, 00:00:30, Serial0/0
What is the value of the routing metric?
*3
12
20
30
120
17
Which of the following WAN connection services typically use synchronous communications? (Choose two.)
circuit-switched
leased line
packet-switched
*Ethernet
analog modem services
18
Router B received an interface configuration change. Suddenly, it transmits a new update. Which of the following could have triggered this update? (Choose two.)
Router B received a configuration change.
*Router A sent a message requesting an update.
Router C came online after Router B sent the RIP update.
*Router B received an error message indicating the last update was not received.
19
Refer to the above graphic. When using RIP as the routing protocol, how would Chicago use load balancing to route packets to New York? (Choose two.)
*by forwarding packets over paths of equal cost
by forwarding packets according to hop count and speed of the link
*by determining which interface has the least traffic and sending to it first
by first determining the speed of the links and then cycling packets through the fastest links first
by cycling packets through interfaces and routes following the same pattern (Router 1, 2, 3) each time
20
Which command will produce the output shown in the graphic?
show cdp
*show cdp neighbors
show cdp neighbors detail
show cdp detail
21
Which of the following are true regarding the setup configuration mode? (Choose three.)
To abort the setup mode, use the CTRL+SHIFT+6 keys.
To abort the setup mode, use the CTRL+C keys.
*Setup mode allows a complete configuration of the router.
*To enter setup mode, use the privileged mode setup command.
A router that does not find a valid IOS during the boot process will start the system configuration dialog.
*A router that does not find a valid configuration file during the boot process will start the system configuration dialog.
22
Which statement about datagram life is true?
Each router increments the TTL value of the datagram until the maximum hop count of the routing protocol is reached. The packet is then returned to the source.
The packet is dropped when the router count and the TTL value match. The source is notified that transmission has failed.
*Each router decreases the TTL value by one until it reaches zero. The datagram is then discarded and a time exceeded for message is sent to the source.
The destination device discards the datagram if the TTL value is zero on arrival. An ICMP destination unreachable message is sent back to the source.
23
Assume OSPF is being used on all routers. What happens when the link between Router1 and Router2 goes down? (Choose two.)
Updates start broadcasting every 30 seconds.
Updates start broadcasting every 90 seconds.
Link-state advertisements are flooded.
*Link-state advertisements are sent only to neighboring routers.
*All routers note the change and adjust routes.
All routers ignore the change until the route becomes active again.
24
Why would an administrator use the Telnet application when troubleshooting a network? (Choose three.)
*It can be used to verify the operation of application layer software between the source and destination.
Telnet can use the ICMP protocol to verify a hardware connection and network layer address.
*It is the most complete testing mechanism available.
*Remote networks may be accessed via a Telnet session for troubleshooting.
Time to Live values are used by Telnet to identify a failure of device between source and destination.
25
A network administrator can establish a remote session to a host using the Router> telnet 192.168.1.1 command but is unsuccessful when using the Router> telnet Boston command to connect to the same interface. Which of the following could be the problem? (Choose two.)
*The ip host table on the router is not configured.
The command telnet Boston was issued from the wrong router prompt.
The routing table is missing.
*Domain name services are not available.
26
Which of the following are functions of a router? (Choose three.)
*packet switching
*extension of network segments
segmentation of local area networks
*selection of best path based on a logical addressing
selection of best path based on a physical addressing
27
Which two statements are true about route metrics? (Choose two.)
*The more factors that make up a metric, the greater the flexibility to tailor network operations.
The larger the metric number, the better the path.
Routing protocols use metrics to send routing updates to directly connected neighbors.
Bandwidth and delay are static metrics used by RIP v1.
*Ticks, delay, and cost are metrics used by routing protocols.
28
The administrator knows that port E0 on router B connects to a small LAN without any routers. Which command can be executed on router B to conserve bandwidth on port E0?
no update timers
holdown-timer 96
poison reverse E0
*passive-interface E0
no triggered updates
29
Which of the following are true statements about creating and applying access lists? (Choose three.)
Access list entries should filter in the order from general to specific.
*One access list per port per protocol per direction is permitted.
*Standard ACLs should be applied closest to the source while extended ACLs should be applied closest to the destination.
There is an implicit deny at the end of all access lists.
*Statements are processed sequentially from top to bottom until a match is found.
The inbound keyword refers to traffic entering the network from the router interface where the ACL is applied.
30
What can be determined from the partial output of the show ip route command displayed below? (Choose two.)
R 200.200.200.0/24 [120/1] via 192.168.10.2, 00:00:14, Serial0/0
C 192.168.10.0/24 is directly connected, Serial0/0
*The next update will be in 76 seconds.
*The next update will be in 16 seconds.
The administrative distance is 120 and the metric is 1.
The metric is 120 and the administrative distance is 1.
200.200.200.0 is configured on Serial0/0.
192.168.10.2 is configured on Serial0/0.
31
How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?
4
*5
8
10
32
In the configuration register value 0x2104, which value represents the boot field setting?
x
2
1
0
*4
33
Host name resolution allows for the use of an alphanumeric name to identify network devices. Select the answer that displays the correct configuration syntax for creating a host name.
Router# ip host Fontana 200.100.50.5
*Router(config)# ip host Fontana 200.100.50.5
Router(config-if)# ip host Fontana 200.100.50.5
Router(config)# ip host Fontana 200.100.50.5/24
34
Refer to the network graphic. A packet needs to travel from Router F to Router A. Which path would be selected by the RIP routing protocol if the default metrics are used?
F, G, E, D, B, A
F, E, D, C, A
*F, E, D, A
F, E, D, B, A
35
Which of the following will add a TFTP server as a fallback source for a router to load an IOS image?
Router# boot system tftp 163.150.9.31 c2500-d-l.120-9
Router# copy run start
Router# boot system tftp c2500-d-l.120-9.bin 163.150.9.31
Router# copy run start
Router# config t
Router(config)# boot system tftp c2500-d-l.120-9.bin 163.150.9.31
Router(config)# exit
Router# copy run start
*Router# config t
Router(config)# boot system tftp 163.150.9.31 c2500-d-l.120-9.bin
Router(config)# exit
Router# copy run start
36
Which of the following are characteristics of the Open Shortest Path First (OSPF) routing protocol? (Choose two.)
*functions as a link-state routing protocol
discards packets when the hop count is greater than 15
calculates the shortest path to a destination using the Diffused Update Algorithm (DUAL)
created as a proprietary routing protocol
*floods updates as topology changes occur
broadcasts routing updates every 90 seconds or as triggered by topology changes
37
The following access list has been created to prevent traffic from host 204.204.7.122 from accessing the 201.100.11.0 network.
access-list 22 deny host 204.204.7.122
access-list 22 permit any
Which group of commands will properly place this access list so that this host is denied access only to the 201.100.11.0 network?
RouterA(config)# interface s0/0
RouterA(config-if)# ip access-group 22 in
RouterA(config)# interface s0/0
RouterA(config-if)# ip access-group 22 out
RouterA(config)# interface fa0/0
RouterA(config-if)# ip access-group 22 in
RouterB(config)# interface fa0/0
RouterB(config-if)# ip access-group 22 in
RouterB(config)# interface s0/0
RouterB(config-if)# ip access-group 22 in
*RouterB(config)# interface fa0/0
RouterB(config-if)# ip access-group 22 out
38
What types of messages are sent periodically by devices configured for CDP?
probes
beacons
signals
*advertisements
routing updates
unicast
39
ACL statements operate in sequential, logical order. If a condition match is true, the rest of the ACL statements are not checked. If all of the ACL statements are unmatched, what happens to the packet?
The packets will be placed in a buffer and forwarded when the ACL is removed.
The packets will be sent to the source with an error notification message.
The implicit permit any statement placed at the end of the list will allow the packets to flow through uninhibited.
*The implicit deny any statement placed at the end of the list will cause the packets to be dropped.
40
Which statements are true regarding VTY passwords? (Choose two.)
VTY passwords must be encrypted.
All VTY lines do not need to use the same password.
*A VTY password is required to establish telnet sessions.
The VTY password is set with the command line console 0.
*The VTY password must be identical with the enable secret password.
41
Refer to the output from the show ip route command. What can be concluded from the output of this router command?
A preferred route to the destination has not been set.
*There are two equal cost paths to network 1.0.0.0.
Both interfaces are being used equally to route traffic.
A variance must be set to load-balance across multiple paths.
42
Refer to the exhibit. An ACL has been created that will deny the host 192.168.7.89 access to an FTP server located at 10.6.13.254.
access-list 111 deny tcp 192.168.7.89 0.0.0.0 10.6.13.254 0.0.0.0 eq 21
access-list 111 deny tcp 192.168.7.89 0.0.0.0 10.6.13.254 0.0.0.0 eq 20
access-list 111 permit ip any any
Which group of commands will place this ACL in the proper location?
Router2(config)#interface s0/0
Router2(config-if)#ip access-group 111 in
*Router2(config)#interface fa0/0
Router2(config-if)#ip access-group 111 out
Router3(config)#interface s0/1
Router3(config-if)#ip access-group 111 out
Router3(config)#interface fa0/0
Router3(config-if)#ip access-group 111 in
Router2(config)#interface fa0/0
Router2(config-if)#ip access-group 111 in
43
Which command is used to redirect debug information to a device that is connected though a Telnet session?
Router# monitor
Router# terminal redirect vty 0
Router# terminal monitor
*Router# monitor output vty 0
44
Given the above topology, which of the following statements are true? (Choose two.)
If RouterC receives a packet destined for 10.5.183.46, it will be forwarded out interface Serial 1.
*If RouterA receives a packet destined for 192.168.3.146, it will be forwarded out interface Ethernet 0.
*If RouterA receives a packet destined for 10.5.27.15, it will be forwarded out interface Serial 1.
If RouterB receives a packet destined for 10.5.27.83, it will be forwarded out interface Serial 0.
If RouterA receives a packet destined for 172.16.55.101, it will be forwarded out interface Serial 1.
45
Of the eight network users on the Human Resources department LAN, one cannot connect to the file server. The user's PC has successfully booted but can not see the network. What should be checked first?
the PC power cord
the file server
*the PC network interface card LEDs
the LAN switch in the wiring closet
the configuration of the router interface attached to the LAN
1 What are some reasons to change the configuration register setting? (Choose two.)
*to force the system to ignore the configuration file stored in NVRAM
• to monitor password changes
• to change the POST sequence
• to force the router to boot the IOS from NVRAM
*to force the system into ROM monitor mode
2 Given the output shown in the exhibit, in what order and location will the router search for the IOS if no boot system commands are found in the startup-config file?
• ROM, Flash, TFTP server
• Flash, NVRAM, RAM
• ROM, TFTP server, Flash
• RAM, Flash, NVRAM
*Flash, TFTP server, ROM
3 Which statements are true regarding setup mode? (Choose three.)
Press Ctrl-z to terminate setup mode.
*Enter a question mark (?) for help at any point.
• Press Spacebar to accept the default settings.
• Use setup mode to enter complex protocol features.
*Press Enter to accept the default settings.
*Press Ctrl-c to abort configuration dialog.
4 What are two possible reasons for this result? (Choose two.)
• The startup-config file was not saved to RAM before reboot.
• The IOS has been erased.
*The router has not been configured.
*The startup-config file cannot be located.
• The router will not enter initial configuration dialog.
5 A new technician must add boot system commands to one of the department routers. Which available commands will the router return as output when the command shown below is entered? (Choose two.)
Router(config)# boot system ?
• RAM
• NVRAM
• IOS
• IP Address
*TFTP
*FLASH
6 Router A and Router B have been correctly configured to use RIP as a dynamic routing protocol and all intefaces on Router A and Router B are reporting "interface is up, line protocol is up" status. RIP is then configured on Router C using the following commands:
RouterC(config)# router rip
RouterC(config-router)# network 192.168.4.0
RouterC(config-router)# network 172.16.0.0
If no additional routing is configured on Router A, Router B, and Router C, what will be the result?
• Networks 192.168.12.0/24, 192.168.4.0/24, and 172.16.0.0/16 will be unreachable from Router A.
• Router A will have no knowledge of network 192.168.12.0/24, but will have routes to networks 192.168.4.0/24 and 172.16.0.0/16.
• All networks shown in the graphic will be reachable by Router A, Router B, and Router C.
*Networks 192.168.4.0/24 and 172.16.0.0/16 will be unreachable from Router A and Router B.
7 The Suffolk router is directly connected to the networks shown in the graphic and has a default route that points to the Richmond router. All interfaces are active and properly addressed. However, when the workstation on network 172.29.5.0/24 sends a packet to destination address 172.29.198.5, it is discarded by the Suffolk router. What can be a reason for this result?
• The ip classless command is not enabled on the Richmond router.
• The route was ignored if the Richmond router did not include the 172.29.198.0/24 network in its routing updates.
• The Richmond router is in a different autonomous system than the Suffolk router.
• The ip subnet-zero command was not configured on the Suffolk router.
*The ip classless command is not enabled on the Suffolk router.
8 A network administrator has enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A?
• A(config)# router rip
A(config-router)# passive-interface S0/0
• B(config)# router rip
B(config-router)# network 192.168.25.48
B(config-router)# network 192.168.25.64
• A(config)# router rip
A(config-router)# no network 192.168.25.32
*B(config)# router rip
B(config-router)# passive-interface S0/0
• A(config)# no router rip
9 Which router component stores the information that is displayed by the show running-config command?
• flash
• NVRAM
*RAM
• ROM
10 If a PC does not have network connectivity to a router, which router port can be used to establish communication?
*console
• Ethernet
• serial
• VTY
11 What information can be learned during the initial router bootup? (Choose two.)
• the configuration register value
*the number and types of interfaces installed
*the router model and the amount of memory that is available
• the amount of memory required to load the IOS and configuration
• the number of interfaces with connected cables
12 Which devices can be used to convert the data from a WAN router at the customer site into a form acceptable for use by the WAN service provider? (Choose three.)
• Ethernet switch
• DTE
*modem
• hub
*DCE device
*CSU/DSU
13 What are the primary functions of a router? (Choose two.)
*determine the best path for packets
• prevent collisions on the network LAN
• regulate flow control between sender and receiver
• provide domain name resolution
*forward packets to the appropriate interface
14 Which of the following are correct statements verified by the router output shown in the graphic? (Choose two.)
• Layer 3 connectivity exists between BigCity and the devices in the Device ID column.
*Layer 2 connectivity exists between BigCity and the devices in the Device ID column.
• All devices shown in the Device ID column use the TCP/IP protocol suite.
• All devices shown in the Device ID column can be pinged from BigCity.
*All devices listed in the Device ID column are directly connected to BigCity.
15 What are the results of setting the boot field bits in the configuration register to "0000"? (Choose two.)
• The startup-config file will be ignored at bootup.
• The router will load the IOS from Flash.
*The router will enter ROM monitor mode upon reload.
• The router will enter boot ROM mode and have limited capabilities.
*The administrator can enter the b command to manually boot the IOS.
16 What can a network administrator do to recover from a lost router password?
• perform a reload or reset
• telnet from another router and issue the show running-config command to view the password
*boot the router to ROM monitor mode and configure the router to ignore NVRAM when it initializes
• boot the router to bootROM mode and enter the b command to load the IOS manually
17 Which router components and operations are correctly described? (Choose two.)
*RAM - stores the ARP cache
• NVRAM - store the operating system
*ROM - stores the backup IOS
• POST - verifies the validity of the running-config
• Flash - executes diagnostics at bootup
• DRAM - loads the bootstrap
18 Which of the following commands will correctly configure an extended ACL? (Choose two).
• Router(config)# access-list 18 permit tcp host 192.168.73.3 eq 25
*Router(config)# access-list 102 permit tcp 10.43.0.0 0.0.255.255 any eq 80
*Router(config)# access-list 187 permit tcp host 192.168.42.34 172.29.0.0 0.0.255.255 eq 23
• Router(config)# access-list 99 permit host 10.217.32.3
• Router(config)# access-list 128 permit tcp host 192.168.100.31 eq 23
19 The following access list has been created to prevent traffic from the 192.0.2.63 host on the Sales LAN from accessing servers and hosts on the Payroll LAN.
access-list 26 deny host 192.0.2.63
access-list 26 permit any
Refer to the exhibit. Which group of commands will properly place the access list so that only the host on the Sales LAN is denied access to the 172.29.7.0 network but all other traffic is permitted?
• Payroll(config)# interface fa0/0
Payroll(config-if)# ip access-group 26 out
*Payroll(config)# interface fa0/1
Payroll(config-if)# ip access-group 26 out
• Sales(config)# interface fa0/1
Sales(config-if)# ip access-group 26 in
• Sales(config)# interface fa0/0
Sales(config-if)# ip access-group 26 out
20 Refer to the graphic. Communication is needed between the LAN connected to the fa0/0 interface of the Kansas router and the fa0/0 interface of the Maine router. All hosts on those LANs also need connectivity to the Internet. Which commands will allow this communication? (Choose three).
*Kansas(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.2
• Kansas(config)# ip route 192.168.6.0 255.255.255.0 s0/1
*Kansas(config)# ip route 0.0.0.0 0.0.0.0 s0/1
• Maine(config)# ip route 192.168.6.0 255.255.255.0 172.18.64.1
*Maine(config)# ip route 0.0.0.0 0.0.0.0 s0/1
• Maine(config)# ip route 172.16.32.0 255.255.255.0 172.18.64.2
21 A network administrator must configure a FastEthernet interface with an IP address. The configuration must also identify the remote site to which the interface is connected. Which set of commands will meet these requirements?
• StPetersburg(config)# banner San Jose T1
StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252
• StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 netmask 255.255.255.252
StPetersburg(config-if)# description San Jose T1
• StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252
StPetersburg(config-if)# banner remote site San Jose T1
*StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252
StPetersburg(config-if)# description San Jose T1
22 A network administrator issues the erase startup-config command on a configured router with the configuration register set to 0x2102 and observes the following output:
Erasing the nvram filesystem will remove all files! Continue? [Confirm]
[OK]
Erase of nvram: complete
If the router unexpectedly loses power after this sequence, what will occur when power is restored?
• The router will enter ROM monitor mode upon completion of the power-on self test (POST).
• The router will load the last known valid configuration file.
• The router will enter Rx-boot mode.
*The router will prompt the user to enter setup mode or to continue without entering setup mode.
23 The main router of XYZ company has enough flash and RAM to store multiple IOS images. An administrator wants to upload a second IOS image from a TFTP server to the flash of the router. Which method will accomplish this task?
• Paste the IOS filename to the command line of the router while in global configuration mode. Press enter. Then issue the copy tftp flash command.
• Use the setup utility to load the new image to flash.
• Copy the IOS image file from a TFTP server using the command copy filename ip address flash .
*Copy the IOS image file from a TFTP server using the command copy tftp flash. When prompted, provide the IP address or name of the TFTP server and the IOS image filename.
24 What facts can be determined from the highlighted text shown in the exhibit? (Choose two.)
*A weak encryption was applied to all unencrypted passwords.
• The enable password is now more secure than the enable secret password.
• An MD5 hashing algorithm was used on all encrypted passwords.
*Any configured user EXEC mode or Telnet passwords will be encrypted in this configuration.
• The service password-encryption command was used to encrypt all passwords on the router including enable secret.
25 What are the features of a serial interface on a router? (Choose two.)
• enabled by default
• assigned a unique MAC address
• must be configured as a DCE in lab and production environments
• must be configured with the default clock rate of 56000
*may be administratively enabled by using the no shutdown command
*must be configured with a valid IP address and subnet mask in order to forward packets
26 What are two recommended uses of login banners? (Choose two.)
*to display security warning messages
• to welcome any user to the router
• to warn people about misusing privileged EXEC mode
• to identify circuits and other devices connected to the router
*to announce a scheduled system shutdown
27 While planning an IOS upgrade, the administrator issues the show version command. Based on the output in the graphic, what is the current IOS boot location?
• RAM
• NVRAM
*Flash
• ROM
28 Why are interface descriptions used in router configurations? (Choose three).
*to enable support personnel to easily identify networks and customers that may be affected by a possible interface issue
*to provide comments on the interface without affecting the router functionality
• to display access warning messages before users enter the interface configuration mode
• to eliminate the need to use IP addresses when using the ping and telnet commands
*to identify the purpose and location of the interface
29 What are two characteristics of the support for Telnet within Cisco IOS software? (Choose two.)
*Up to five separate Telnet lines are supported by default in standard edition IOS files.
• For security purposes, Telnet sessions are required to be established from the privileged mode.
*A router can host simultaneous Telnet sessions.
• Once established, a Telnet session can remain operational regardless of network status.
• Telnet tests wireless connectivity and does not require a physical connection between devices to gain remote access.
30 Neither router in the exhibit has a host table or DNS available. The interfaces and passwords have been correctly configured. Which of the following commands will initiate a Telnet session? (Choose two.)
• Tottenham# telnet Oxford
*Tottenham> telnet 198.18.139.1
• Oxford# connect 198.18.139.0
• Oxford> connect Tottenham
• Oxford# telnet Tottenham
*Oxford# 198.18.139.2
31 From the running-config, the following configuration entries are displayed:
Router(config)# line vty 0 2
Router(config-line)# password g8k33pr
Router(config-line)# login
What can be interpreted from the exhibited configuration? (Choose two.)
*Three Telnet lines are available for remote access.
• Two Telnet lines are available for remote access.
• Future configuration of the remaining Telnet lines will require the password to be set to g8k33pr.
• To login to the remote device, g8k33pr will be used as the Telnet and secret password.
*Remote access to this local router will require a Telnet password of g8k33pr.
32 Assuming the following ACL is correctly applied to a router interface, what can be concluded about this set of commands? (Choose two.)
• Router(config)# access-list 165 deny tcp 192.28.115.0 0.0.0.255 172.20.0.0 0.0.255.255 eq 23
• Router(config)# access-list 165 permit ip any any
• This is a standard IP access list that denies network 192.28.115.0 Telnet access to the 172.20.0.0 network.
• All Telnet traffic destined for 172.20.0.0 from any network will be denied access.
*Network 192.28.115.0 is denied Telnet access to the 172.20.0.0 network.
Network 172.20.0.0 is denied Telnet access to the 192.28.115.0 network.
*All FTP and HTTP traffic destined for 172.20.0.0 will be permitted access.
33 What can be concluded from the output shown in the exhibit? (Choose three.)
*This is a standard IP access list.
• This is an extended IP access list.
*The keyword host is implied in the command line access-list 99 deny 10.213.177.76.
• The wildcard mask must be configured for this access list to function properly.
*Host 10.213.177.100 will be allowed access to the Serial0/1 interface.
34 access-list 199 deny tcp 178.15.0.0 0.0.255.255 any eq 23
access-list 199 permit ip any any
Assuming this ACL is correctly applied to a router interface, which statements describe traffic on the network? (Choose two.)
*All FTP traffic from network 178.15.0.0 will be permitted.
• All Telnet traffic destined for network 178.15.0.0 will be denied.
• Telnet and FTP will be permitted from all hosts on network 178.15.0.0 to any destination.
*Telnet will not be permitted from any hosts on network 178.15.0.0 to any destination.
• Telnet will not be permitted to any host on network 178.15.0.0 from any destination.
35 Hosts from the Limerick LAN are not allowed access to the Shannon LAN but should be able to access the Internet. Which set of commands will create a standard ACL that will apply to traffic on the Shannon router interface Fa0/0 implementing this security?
• access-list 42 deny 172.19.123.0 0.0.0.255 192.0.2.0 0.0.0.255
access-list 42 permit any
*access-list 56 deny 172.19.123.0 0.0.0.255
access-list 56 permit any
• access-list 61 deny 172.19.123.0 0.0.0.0
access-list 61 permit any
• access-list 87 deny ip any 192.0.2.0 0.0.0.255
access-list 87 permit ip any
36 Refer to the exhibit. Router D interface S0 on has gone down. What is the maximum time that will elapse before Router A learns that network 168.58.14.0 is down?
• 5 seconds
• 13 seconds
*17 seconds
• 25 seconds
• 30 seconds
• 77 seconds
37 Refer to the graphic. Which series of commands will create static routes that will allow Router A and Router B to deliver packets destined for LAN A and LAN B, and direct all other traffic to the Internet?
• RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0
• RouterA(config)# ip route 10.90.3.0 255.255.255.0 192.168.3.2
RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
• RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
RouterB(config)# ip route 172.20.20.4 255.255.255.252 s0/0
*RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0
38 Refer to the exhibit. The new security policy for the company allows all IP traffic from the Engineering LAN to the Internet while only web traffic from the Marketing LAN is allowed to the Internet. Which ACL can be applied in the outbound direction of Serial 0/1 on the Marketing router to implement the new security policy?
• access-list 197 permit ip 192.0.2.0 0.0.0.255 any
access-list 197 permit ip 198.18.112.0 0.0.0.255 any eq www
• access-list 165 permit ip 192.0.2.0 0.0.0.255 any
access-list 165 permit tcp 198.18.112.0 0.0.0.255 any eq www
access-list 165 permit ip any any
*access-list 137 permit ip 192.0.2.0 0.0.0.255 any
access-list 137 permit tcp 198.18.112.0 0.0.0.255 any eq www
• access-list 89 permit 192.0.2.0 0.0.0.255 any
access-list 89 permit tcp 198.18.112.0 0.0.0.255 any eq www
39 What will occur when the following ACL is applied inbound to both FastEthernet interfaces of Router A in the graphic?
access-list 125 permit tcp 192.168.2.0 0.0.0.255 10.90.3.0 0.0.0.255 eq 23
access-list 125 permit tcp 10.90.3.0 0.0.0.255 192.168.2.0 0.0.0.255 eq 23
access-list 125 permit tcp 192.168.2.0 0.0.0.255 any eq www
*Workstations A and B will be able to Telnet to each other. Workstation A will be allowed to access Web servers on the Internet, while Workstation B will be denied Internet Web access.
• Workstations A and B will be able to Telnet to each other. All other traffic will be denied.
• The ACL will have no effect because it should be applied in the outbound direction on the FastEthernet interfaces.
• The ACL will deny all traffic because of the implied deny ip any any statement at the end of the ACL.
40 What are two possible reasons a router would not load a valid IOS from flash? (Choose two.)
• The configuration register is set to 0x2142.
*The first boot system command executed in the startup configuration file is boot system rom.
*The configuration register is set to 0x2100.
• The boot field is set to the hexadecimal number 2.
• The startup configuration file is missing or corrupt.
41 A network administrator has a console connection to the Fremantle router. Pings to Melville are successful, but pings to Cottesloe and Nedlands fail. What could be a first step in troubleshooting the problem?
• Use an extended ping from Fremantle to each router in the network.
*Use the show interfaces command from a Telnet session on Melville to check the connection to Cottesloe.
• Use the traceroute command to discover exactly which link in the network is down.
• Use the show cdp neighbors detail command from Fremantle to gather information about all Cisco routers in the network.
42 What are three features of CDP? (Choose three.)
*provides information on directly connected devices that have CDP enabled
*tests Layer 2 connectivity
*enabled by default on each interface
• provides a layer of security
• used for debugging Layer 4 connectivity issues
43 Which two steps describe how to create a functional physical connection between a router console and a terminal? (Choose two.)
• Use a crossover cable to connect the terminal serial port to the router console port.
• Use a rollover cable to connect the terminal NIC to the router console port.
*Use an RJ-45 to DB-9 adapter on the terminal serial port to connect to the cable going to the router console.
• Use a transceiver to connect a straight-through cable to the router console port.
• Use a straight-through cable to connect the router console port to the terminal NIC.
*Use a rollover cable to connect from a terminal serial port to the router console port.
44 Refer to the exhibit. Assuming default metrics are used and the network is fully converged, which path will RIP use to send a packet from Router A to Router F?
*A, D, E, F
• A, B, D, E, F
• A, C, D, E, G, F
• A, B, D, E, G, F
45 Based on this partial output of the show ip route command, which routing protocol is configured on the router?
I 172.16.3.0/24 [100/80135] via 172.16.2.2, 00:00:27, Serial0/0
• RIP v1
• RIP v2
*IGRP
• EIGRP
• OSPF
• IGP
46 Why are routed protocols important to networking? (Choose two.)
• Routed protocols detect collisions and fragments.
• Routers use routed protocols to calculate the best path to a destination.
*Routed protocols transport data across the network.
*The fields and formats used within a packet are defined by routed protocols.
• Routed protocols are used to configure the metrics used by routing protocols.
47 What could a Cisco support technician learn from the IOS filename c2600-d-mz.121-3? (Choose three.)
*the format of the file
• the RAM memory requirements of the file
*the version number of the file
• the size of the file
*the device platform of the file
48 What critical information about the status of the router can be found in the outputs of both the show interfaces and show protocols commands? (Choose two.)
*the Layer 3 address of each configured interface
• the routing protocol configured to forward updates out of each interface
*the operational status of each interface
• traffic statistics for each interface
• whether the interface is configured as a DTE or DCE
49 Which of the following are true statements regarding IGRP and RIP? (Choose two.)
*IGRP uses a combination of different metrics for path selection.
• RIP is a proprietary protocol developed by Cisco.
• RIP has the ability to scale to large networks.
*IGRP has the ability to scale to large networks.
