Question

# Problem 1. RDT: Sender Utilization (20 pt.) Recall the example of sender utilization when assuming either...

Problem 1. RDT: Sender Utilization (20 pt.) Recall the example of sender utilization when assuming either stop-and-wait or pipelined protocols. Assume a 100 Mbps link with 50 msec propagation delay between two hosts. Also assume the packet length is 1,500 bytes. a. Calculate sender utilization (%) under the assumption of the stop-and-wait protocol. b. Calculate sender utilization (%) under the assumption of the pipelined protocol that can send 30 packets without acknowledgment.

a) Transmission Time = Tt =

stop & wait    =

= 12000 * 10-8

= 12 * 10-5

= 0.12 msec

%

b) In pipelined protocol , we are sending 30 packets in ( Tp + Tt ) time

=

= 3.59 %

I have tried to explain it in very simple language and I hope that i have answered your question satisfactorily.Leave doubts in comment section if any.

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