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Q:

Which command displays RIP routing updates?

A) Show ip route B) debug ip rip
C) show protocols D) Debug ip route
 
Answer & Explanation Answer: B) debug ip rip

Explanation:

Debug ip rip is used to show the internet Protocol (IP) Routng Information protocol (RIP) updates being sent and received on the router.

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Q:

Which of the following is the best description of the operation of split horizon?

A) Information about a route should not be sent back in the direction from which the original update came B) It splits the traffic when you have a large bus (horizon) physical network
C) It holds the regular updates from broadcasting to a downed link D) It prevents regular update messages from reinstating a route that has gone down
 
Answer & Explanation Answer: A) Information about a route should not be sent back in the direction from which the original update came

Explanation:

A split horizon will not advertise a route back to the same router it learned the route from.

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Q:

You telnet into a remote device and type debug ip rip, but no output from the debug command is seen. What could the problem be?

A) You must type the show ip rip command first B) IP addressing on the network is incorrect
C) You must use the terminal monitor command D) Debug output is sent only to the console.
 
Answer & Explanation Answer: C) You must use the terminal monitor command

Explanation:

To see console messages through your Telnet session, you must enter the terminal monitor command.

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Q:

You need to gather the IP address of a remote switch that is located in Hawaii. What can you do to find the address?

A) Issue the show ip route command on the router connected to the switch B) Issue the show cdp neighbor command on the router connected to the switch
C) Issue the show ip arp command on the router connected to the switch D) Issue the show cdp neighbors detail command on the router connected to the switch
 
Answer & Explanation Answer: D) Issue the show cdp neighbors detail command on the router connected to the switch

Explanation:

Although option A is certainly the "best" answer, unfortunately option E will work just fine and your boss would probably prefer you to use the show cdp neighbors detail command.

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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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Q:

Which command displays IP-to-MAC- address mappings on a Windows PC?

A) ping B) traceroute
C) arp -a D) tracert
 
Answer & Explanation Answer: C) arp -a

Explanation:

The arp -a command displays IP-to-MAC-address mappings on a Windows PC.

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Q:

What switch must be added to the ipconfig command on a PC to verify DNS configuration?

A) /dns B) -dns
C) /all D) -all
 
Answer & Explanation Answer: C) /all

Explanation:

The /all switch must be added to the ipconfig command on a PC to verify DNS configuration.

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Q:

What network service is the most likely problem if you can ping a computer by IP address but not by name?

A) DNS B) DHCP
C) ARP D) ICMP
 
Answer & Explanation Answer: A) DNS

Explanation:

 The most likely problem if you can ping a computer by IP address but not by name is a failure of DNS.

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