Review Questions

You can find the answers in Appendix B.

1. You type show running-config and get this output:

   [output cut]
   line console 0
         Exec-timeout 1 44
         Password 7 098C0BQR
         Login
   [output cut]

   What do the two numbers following the exec-timeout command mean?

   1. If no command has been typed in 44 seconds, the console connection will be closed.
   2. If no router activity has been detected in 1 hour and 44 minutes, the console will be locked out.
   3. If no commands have been typed in 1 minute and 44 seconds, the console connection will be closed.
   4. If you're connected to the router by a Telnet connection, input must be detected within 1 minute and 44 seconds or the connection will be closed.
2. Which of the following connection methods available to connect to a router is considered out-of-band?
   1. Serial port
   2. VTY port
   3. HTTP port
   4. Aux port
3. Which two of the following commands are required when configuring SSH on your router?
   1. enable secret password
   2. exec-timeout 0 0
   3. ip domain-name name
   4. username name password password
   5. ip ssh version 2
4. Which command will show you whether a DTE or a DCE cable is plugged into serial 0?
   1. sh int s0
   2. sh int serial 0
   3. show controllers s 0
   4. show serial 0 controllers
5. Which of the following is a correct combination of file type and default location in a Cisco router?
   1. IOS/NVRAM
   2. Startup configuration/flash memory
   3. IOS/flash memory
   4. Running configuration/NVRAM
6. You set the console password, but when you display the configuration, the password doesn't show up; it looks like this:

   [output cut]
   Line console 0
         Exec-timeout 1 44
         Password 7 098C0BQR
         Login
   [output cut]

   What command would configure the password to be stored this way?

   1. encrypt password
   2. service password-encryption
   3. service-password-encryption
   4. exec-timeout 1 44
7. Which of the following commands will configure all the default VTY ports on a router on a router with five VTY lines?
   1. Router#line vty 0 4
   2. Router(config)#line vty 0 4
   3. Router(config-if)#line console 0
   4. Router(config)#line vty all
8. Which one of the following commands sets the secret password to Cisco?
   1. enable secret password Cisco
   2. enable secret cisco
   3. enable secret Cisco
   4. enable password Cisco
9. If you wanted administrators to see a message when logging into the router, which command would you use?
   1. message banner motd
   2. banner message motd
   3. banner motd
   4. message motd
10. Which of the following prompts indicate that the router is currently in privileged mode?
    1. router(config)#
    2. router>
    3. router#
    4. router(config-if)
11. What command do you type to save the configuration stored in RAM to NVRAM?
    1. Router(config)#copy current to starting
    2. Router#copy starting to running
    3. Router(config)#copy running-config startup-config
    4. Router#copy run startup
12. You try to telnet into SFRouter from router Corp and receive this message:

    Corp#telnet SFRouter
    Trying SFRouter (10.0.0.1)…0pen
    
    Password required, but none set
    [Connection to SFRouter closed by foreign host]
    Corp#

    Which of the following sequences will address this problem correctly?

    1. Corp(config)#line console 0

       Corp (config-line)#password password

       Corp (config-line)#login

    2. SFRouter(config)#line console 0

       Corp (config-line)#enable secret password

       Corp (config-line)#login

    3. Corp(config)#line vty 0 4

       Corp (config-line)#password password

       Corp (config-line)#login

    4. SFRouter(config)#line vty 0 4

       Corp (config-line)#password password

       Corp (config-line)#login

13. Which command will delete the contents of NVRAM on a router?
    1. delete NVRAM
    2. delete startup-config
    3. erase NVRAM
    4. erase start
14. What is the problem with an interface if you type show interface serial 0 and receive the following message?

    Serial0 is administratively down, line protocol is down

    1. The keepalives are different times.
    2. The administrator has the interface shut down.
    3. The administrator is pinging from the interface.
    4. No cable is attached.
15. Which of the following commands displays the configurable parameters and statistics of all interfaces on a router?
    1. show running-config
    2. show startup-config
    3. show interfaces
    4. show versions
16. If you delete the contents of NVRAM and reboot the router, what mode will you be in?
    1. Privileged mode
    2. Global mode
    3. Setup mode
    4. NVRAM loaded mode
17. You type the following command into the router and receive the following output:

    Router#show serial 0/0
                ^
    % Invalid input detected at ‘^’ marker.

    Why was this error message displayed?

    1. You need to be in privileged mode.
    2. You cannot have a space between serial and 0/0.
    3. The router does not have a serial0/0 interface.
    4. Part of the command is missing.
18. You type Router#sh ru and receive a % ambiguous command error. Why did you receive this message?
    1. The command requires additional options or parameters.
    2. There is more than one show command that starts with the letters ru.
    3. There is no show command that starts with ru.
    4. The command is being executed from the wrong router mode.
19. Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface? (Choose two.)
    1. show version
    2. show interfaces
    3. show controllers
    4. show ip interface
    5. show running-config
20. At which layer of the OSI model would you assume the problem is if you type show interface serial 1 and receive the following message?

    Serial1 is down, line protocol is down

    1. Physical layer
    2. Data Link layer
    3. Network layer
    4. None; it is a router problem.