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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:

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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Q:

To test the IP stack on your local host, which IP address would you ping?

A) 127.0.0.0 B) 1.0.0.127
C) 127.0.0.1 D) 127.0.0.255
 
Answer & Explanation Answer: C) 127.0.0.1

Explanation:

To test the localstack on your host, ping the loop back interface of 127.0.0.1

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Q:

Which configuration command must be in effect to allow the use of 8 subnets if the Class C subnet mask is 255.255.25.224?

A) Router(config)#ip classless B) Router(config)#ip version 6
C) Router(config)#ip unnumbered D) Router(config)#ip subnet-zero
 
Answer & Explanation Answer: D) Router(config)#ip subnet-zero

Explanation:

A Class C subnet mask of 255.255.255.224 is 3 bits on and 5 bits off (11100000) and provides 8 subnets, each with 30 hosts. However, if the command ip subnet-zero is not used, then only 6 subnets would be available for use.

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Q:

What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the 255.255.255.224 subnet mask?

A) 15 B) 16
C) 30 D) 31
 
Answer & Explanation Answer: C) 30

Explanation:

A/27 (255.255.255.224) is 3 bits on and 5 bits off. This provides 8 subnets, each with 30 hosts. Does it matter if this mask is used with a Class A, B, or C network address? Not at all. The number of host bits would never change.

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