A network administrator has been given a network of 172.16.85.0/21 and wants to know the usable range of IP addresses on that su

Question

4 years ago

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A network administrator has been given a network of 172.16.85.0/21 and wants to know the usable range of IP addresses on that su

bnet. Which of the following indicates the correct IP address range?A. 172.16.80.0-172.16.85.254B. 172.16.80.0-172.16.88.255C. 172.16.80.1-172.16.87.254D. 172.16.80.1-172.16.85.255

Computers and Technology

1 answer:

viktelen [127] · Answer 1 · 2022-02-03T18:12:39+03:00

Answer:

The correct answer to the following question will be option C.

172.16.80.1-172.16.87.254

Explanation:

IP Address: IP Address stands for Internet Protocol Address, a unique numerical label allotted to every computer network that are connected to the network of the computer and communicate through the internet protocol.

An IP address can be separated by periods and having four numbers that are called Octet. Range of IP address can be from 0 to 255.
We have to keep the first 21 bits and start setting all from the 22nd bit on to 0 (zero).

To get the suitable and the correct range of the address, we add and subtract 1 from the given broadcast address i.e.,172.16.85.0/21.

So, option C is the right answer and no other option is usable according to the given explanation and the address given by the administrator.