Question

In: Computer Science

Indicate as many of the following that are (or could be, if the right netmask were...

Indicate as many of the following that are (or could be, if the right netmask were applied) true about the IP number 9.128.172.143 . Answer using the IP address as it is given, and also include answers that would be true if you applied another appropriate netmask.

Loopback

Network Number

Broadcast Address

Private / Internal / Non-routable

This Computer

Class A

Class B

Class C

Solutions

Expert Solution

Dear student,

The given IP address falls in the range of 1.0.0.1 to 126.255.255.254. Thus it is an IP address of the Class A.

IPv4 has special reserved addresses called as loopback addresses. An entire Class A network itself is reserved as loopback network. The loopback network in IPv4 is 127.0.0.0 with a subnet mask of 255.0.0.0.

When any program/protocol sends data from a computer with any IPv4 loopback address as the destination address, the TCP/IP protocol stack on that computer process the traffic within itself without sending it to the network. In other words, if you ping to a loopback address, you get the reply from the TCP/IP protocol stack running on the same computer. Any data traffic sent to IPv4 loopback addresses from 127.0.0.1 to 127.255.255.254 as the destination IPv4 address will never appear on network.

The network number for the given IP address is: 9.128.172.143/32

Broadcast network address is: 9.128.172.143

Any IP address that falls specified ranges is a private IP address and is non-routable on the Internet. The range is as follows:

  • 10.0.0.0/8=10.0.0.0 – 10.255.255.255
  • 192.168.0.0/16=192.168.0.0 – 192.168.255.255
  • 172.16.0.0/12=172.16.0.0 – 172.31.255.255

Thus, we conclude that, the given IP address is not Private / Internal / Non-routable.

The given network has only 1 host which is 9.128.172.143 (itself).

It becongs to Class A (as mentioned earlier).

Thank you, if you liked the answer, please leave an Upvote!


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