supernet mask of class c is given 255.255.224.0 .the number of networks that can be joined are
I think here they are asking how much extra 1’s we can use in the network or how much bits we can borrow from the host to make 1’s.
here the given network id is 255.255.224.0.
and as per the standard the subnet mask of class C is 255.255.255.0
224 = 11100000 and 255 = 11111111
thus as we have 5 bits to be included in the network id .
so from 5 bits we can add 2^5 networks i.e 32 networks.
@Pranavpurkarwhy you did not consider 111?
we have to find out that how many more networks can be added . so 5 bits can be changes to 1 that’s why we have to count those 5 bits.