Four bits are used for packed sequence numbering in a sliding window protocol used in a computer network. What is the maximum window size?
Answer given is $16$
Answer is 15.
As given, this is sliding window protocol so,in case consider Selective repeat:
Sender window size = Receiver window size
Sender window size + Receiver window size = sequence numbering(24)
Let window size is N.
If we consider GBN then the max window size (16-1) =15
So Max window size =15
see the question, it is asking for a sliding window protocol