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71.
Which of the following is the loopback address in IPV6?
- A.127.0.0.1
- B.FE80::
- C.::1
- D.FEC0:
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| In IPv6 the loopback address is all zeroes in every hextet except the last. Closing up the first seven hextets with a double colon results in ::, and the one in the last hextet results in ::1 after omitting the leading zeroes in the last hextet. |
72.
Which of the following is the IPv6 prefix of an autoconfigured address?
- A.127.0.0.1
- B.FE80::
- C.::1
- D.FEC0:
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| When autoconfiguration is used, the first hextet will always be FE80::. The rest of the address will be derived from the MAC address of the device. |
73.
When implementing CIDR, what configuration setting is manipulated to size the subnet as
desired?
- A.IP address
- B.Subnet mask
- C.Default gateway
- D.Duplex
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Using CIDR, administrators can create smaller networks called subnets by manipulating the subnet mask of a larger classless or major network ID. This allows you to create a subnet that is much closer in size to what you need, thus wasting fewer IP addresses and increasing performance in each subnet. |
74.
Which of the following is not a private IP address?
- A.10.0.0.5
- B.172.16.5.9
- C.192.168.5.9
- D.172.32.63
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| The Class B range of private IP addresses is from 172.16.0.0 to 172.31.255.255. |
75.
Which of the following is an APIPA address?
- A.168.254.3.3
- B.172.16.5.9
- C.192.168.5.9
- D.169.254.5.6
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Automatic Private IP Addressing (APIPA) is a TCP/IP feature Microsoft added to their operating systems. If a DHCP server cannot be found and the clients are configured to obtain IP addresses automatically, the clients automatically assign themselves an IP address, somewhat randomly, in the 169.254.x.x range with a subnet mask of 255.255.0.0. |
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