Question

1. With subnet as 123.45.76.0/24, how many address are there in this subnet?

Which of the following address belong to this subnet? 123.45.76.77, 123.45.77.76, 123.45.76.255, 124.45.76.1

Answer 1

With subnet as 123.45.76.0/24

Q->1: How many address are there in this subnet?

Total address in this subnet = 2^{(32 - 24)} = 2⁸ = 256

.

Q-> 2: Which of the following address belong to this subnet? 123.45.76.77, 123.45.77.76, 123.45.76.255, 124.45.76.1

given address: 123.45.76.0

subnet mask: 255.255.255.0

=> address range is from 123.45.76.0 to 123.45.76.255

Now,

123.45.76.77 belong to this subnet

123.45.77.76 does not belong to this subnet, because 3rd octet doesn't match the given subnet.

123.45.76.255 belong to this subnet

124.45.76.1 does not belong to this subnet, because 1st octet doesn't match the given subnet.