2) (25 points) Consider the transmission of segments of size L 500 bytes over a single link of transmission rate R 100 Mbps from host A to host B. Suppose a pipelined reliable transport protocol is used. The round trip propagation delay from host A to host B and back to host A is RTT = 40 msec. Suppose no segment or acknowledgement is lost or corrupted. Ignore processing delays and suppose that the acknowledgement is very small segment is allowed to (a) Suppose the window size is one, ie, only one be out in the network at any point in time. How large is the utilization achieved on the link? How large is the throughput (in bit/sec) achieved over the link? unacknowledged (b) We want to achieve an average link utilization of at least 80 %. What is the required minimum size of the window in number of segments