Compare GBN, SR and TCP (no delayed ACK). Assume that the timeout values for all three protocols are sufficiently long such that 10 consecutive data segments and the corresponding ACKs can be received (if not lost in the channel) by the receiving host (Host B) and the sending host (Host A) respectively. Suppose Host A sends 10 data segments to Host B, and the fifth segment (sent from A) is lost. In the end, all 10 data segments have been correctly received by Host B.

How many segments has Host A sent in total and how many ACKs has Host B sent in total? What are their sequence numbers? Answer this question for all three protocols.

If the timeout values for all three protocols are much longer than 10 RTT, then which protocol successfully delivers all 10 data segments in the shortest time interval?