Question

Given the address 23.56.7.91 and the default class a mask, find the network address. (5 marks

Answer 1

Hey there!

Q. Given the address 23.56.7.91 and the default class a mask, find the network address.

Answer :

= > The first byte is 23 (between 0 - 127); the class is A.

We can find network address by applying the default mask of the given class of the address in the block. We hold the netid bytes of the block and replace the hostid bytes with zero.

= > Class A default mask is 255.0.0.0.

= > Replacing hostid bytes that is 56.7.91 with zero.

    Therefore, the network address is 23.0.0.0.

Answer 2

It is given in the problem that the address is 23.56.7.91 and the default class a mask. So the default mask is 255.0.0.0.

It means that the 1st byte must be preserved and the rest 3 bytes must be set to 0s.

So the final network address must be 23.0.0.0.