Using 5 bit sequence numbers what is the maximum size ofof send and recieve window for the following protocols

1-stop and wait arq

2-go back n arq

3-selective repeat arq

1 - Stop and wait protocol is also called as a one-bit sliding window protocol. The maximum size of the sender and receiver window is 1.

2 - The maximum sender window size in go-back n is (2^n) - 1, n is the sequence number.

= 2^5 - 1

= 32-1

= 31

The maximum receiver window size is 1.

3 - In selective repeat arq, the maximum window size is (2^n) / 2 where n is sequence number, the sequence number here is 5.

so, 2^5/2

= 32/2

= 16