Calculate the sender utilization for a network with packet size of 25670 bits and link rate of 109 bits/s, when (i) classical stop and wait protocol is used, and (ii) a pipelined operation with stop and wait (see Fig. 3.18, on Page 219) is used and the sender is allowed to transmit a max of 5 packets before waiting for ACK. Let the round-trip time in the network be 10 times the transmission delay for a single packet. Sender Receiver First bit of first packet transmitted, t 0 Last bit of first packet transmitted, t = UR First bit of first packet arrives Last bit of first packet arrives, send ACK RTT ACK arrives, send next packet, t=RTT + LIR Sender First bit of first packet transmitted, t = 0 Last bit of first packet transmitted, ta UR First bit of first packet arrives - Last bit of first packet arrives, send ACK -Last bit of 2nd packet arrives, send ACK - Last bit of 3rd packet arrives, send ACK RTT ACK arrives, send next packet b. Pipelined operation