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Q:

The corporate office sends you a new router to connect, but upon connecting the console cable, you see that there is already a configuration on the router. What should be done before a new configuration is entered in the router?

A) RAM should be erased and the router restarted B) Flash should be erased and the router restarted
C) NVRAM should be erased and the router restarted D) The new configuration should be entered and saved
 
Answer & Explanation Answer: C) NVRAM should be erased and the router restarted

Explanation:

Before you start to configure the router, you should erase the NVRAM with the erase startup-config command and then reload the router using the reload command.

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Q:

What does the command confreg 0x2142 provide?

A) It is used to restart the router B) It is used to bypass the configuration in NVRAM
C) It is used to enter ROM monitor mode D) It is used to view the lost password
 
Answer & Explanation Answer: B) It is used to bypass the configuration in NVRAM

Explanation:

The default configuration setting is 0x2102, which tells the router to load the IOS from flash and the configuration from NVRAM. 0x2142 tells the router to bypass the configuration in NVRAM so that you can perform password recovery.

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Q:

You copy a configuration from a network host to a router's RAM. The configuration looks correct, yet it is not working at all. What could the problem be?

A) You copied the wrong configuraion into RAM B) You copied the configuration into flash memory instead
C) The copy did not override the shutdown command in running-config D) The IOS became corrupted after the copy command was initiated
 
Answer & Explanation Answer: C) The copy did not override the shutdown command in running-config

Explanation:

Since the configuration looks correct, you probably didn't screw up the copy job. However , when you perform a copy from a network host to a router , the interfaces are automatically shut dow and need to be manually enabled with the no shutdown command.

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Q:

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?

Serial 1 is down, line protocol is down

A) Physical layer B) Data Link layer
C) Network layer D) None
 
Answer & Explanation Answer: A) Physical layer

Explanation:

If you see that a serial interface and the protocol are both down, then you have a physical layer problem. If you see serial 1 is up, line protocol is down, then you are not receiving (Data Link) Keepalives from the remote end.

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Q:

If you delete the contents of NVRAM and reboot the router , what mode will you be in?

A) privileged mode B) Global mode
C) Setup mode D) NVRAM loaded mode
 
Answer & Explanation Answer: C) Setup mode

Explanation:

If you delete the startup-config and reload the router, the router will automatically enter setup mode. You can also type setup from privileged mode at any time.

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Q:

What command do you type to save the configuration stored in RAM to NVRAM?

A) Router (config) #copy current to starting B) Router #copy starting to running
C) Router (config) #copy running - config startup - config D) Router#copy run start
 
Answer & Explanation Answer: D) Router#copy run start

Explanation:

To copy the running - config to NVRAM so that it will be used if the router is restarted , use the copy running-config startup-config command in privileged mode (copy run start for short).

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Q:

If you wanted administrators to see a message when logging into the router, which command would you use?

A) message banner motd B) banner message motd
C) banner motd D) message motd
 
Answer & Explanation Answer: C) banner motd

Explanation:

The typical banner is a message of the day (MOTD) and is set by using the global configuration mode command banner motd.

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Q:

When a ping to the local host IP address fails, what can you assume?

A) The IP address of the local host is incorrect B) The IP address of the remote host is incorrect
C) The NIC is not functional D) The IP stack has failed to initialize
 
Answer & Explanation Answer: C) The NIC is not functional

Explanation:

When a ping to the local host IP address fails, you can assume the NIC is not functional.

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