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Q:

When a ping to the loopback 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: D) The IP stack has failed to initialize

Explanation:

When a ping to the loopback address fails , you can assume the IP stack has failed to initialize.

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Q:

What command displays the ARP table on a Cisco router?

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

Explanation:

The command that displays the ARP table on a Cisco router is show ip arp.

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Q:

What command is the Windows version of the Cisco command that displays the networks traversed on a path to a network destination?

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

Explanation:

tracert is the Windows version of the Cisco command that displays the networks traversed on a path to a network destination.

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Q:

Which of the following is a result of route aggregation?

A) Smaller routing tables B) More complete routing tables
C) Increased memory usage D) Increased CPU usage
 
Answer & Explanation Answer: A) Smaller routing tables

Explanation:

Route aggregation results in smaller routing tables.

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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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Q:

To use VLSM, what capability must the routing protocols in use possess?

A) Support for multicast B) Multi-protocol support
C) Transmission of subnet mask information D) Support for unequal load balancing
 
Answer & Explanation Answer: C) Transmission of subnet mask information

Explanation:

To use VLSM, the routing protocols in use possess the capability to transmit subnet mask information.

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Q:

What is the subnet for host ID 10.16.3.65/23?

Answer

A/23 is 255.255.254.0. The third octet is a block size of 2.0, 2, 4. The subnet is in the 16.2.0 subnet; the broadcast address is 16.3.255

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Subject: CCNA