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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:

Which commands loads a new version of the Cisco IOS into a router?

A) copy flash ftp B) copy ftp flash
C) copy flash tftp D) copy tftp flash
 
Answer & Explanation Answer: D) copy tftp flash

Explanation:

The command copy tftp flash will allow you to copy a new IOS into flash memory on your router.

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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:

You type Router#sh ru and receive a % ambiguous command error. why did you receive this message?

A) The command requires additional options or parameters B) There is more than one show command that starts with the letters ru.
C) There is no show command that starts with ru D) The command is being executed from the wrong router mode
 
Answer & Explanation Answer: B) There is more than one show command that starts with the letters ru.

Explanation:

The % ambiguous command error means that there is more than one possible show command that starts with ru. Use a question mark to find the correct command.

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Q:

Which  of the following commands sets the secret password to Cisco?

A) enable secret password Cisco B) enable secret cisco
C) enable secret Cisco D) enable password Cisco
 
Answer & Explanation Answer: C) enable secret Cisco

Explanation:
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Q:

Which of the following commands will configure all the default VTY ports on a router?

A) Router#line vty 0 4 B) Router (config) #line vty 0 4
C) Router (config-if)#line console 0 D) Router(config)#line vty all
 
Answer & Explanation Answer: B) Router (config) #line vty 0 4

Explanation:

From global configuration mode, use the line vty 0 4 command to set all five default VTY lines

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