Consider two processes, A and B, using sockets to communicate with each other

over a single TCP connection. Let Acwnd be the size of the TCP congestion window at As

endpoint, and let Bcwnd be the size of the TCP congestion window at Bs endpoint.

Are Acwnd and Bcwnd necessarily equal? If they must be equal, explain why. If they may be

different, describe a situation in which they might differ.