7. Consider sending 6 Kbyte from host A to host B using Stop and Wait, Go-Back-N, and Selective Repeat. Assume packet si

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7 Consider Sending 6 Kbyte From Host A To Host B Using Stop And Wait Go Back N And Selective Repeat Assume Packet Si 1 (27.09 KiB) Viewed 44 times

7. Consider sending 6 Kbyte from host A to host B using Stop and Wait, Go-Back-N, and Selective Repeat. Assume packet size (L) is 2 Kbyte, data rate (R) is 8Mbps, RTT=18ms, window size (W) is 4 packets, and the Timeout-30 ms. Case 1: Assume all packets and ACKS are received correctly, what is the sender utilization (Usender) when using: (1) Stop and Wait: (2) Go-Back-N: (3) Selective Repeat: Case 2: Now suppose ACK2 is missed and all other packets and ACKS are received correctly. The first packet and ACK are PO and ACK0 respectively. Neglect the transmission time of ACK packets. (1) Assume start sending at time 0, draw the timing diagram when using Stop and Wait, Go- Back-N, and Selective Repeat. (2) Assume start sending at time 0, when does host A finish sending the last packet when using Stop and Wait, Go-Back-N, and Selective Repeat: