Question: 4) (10 pts) (5 pts) Consider the cross-country example studied in class. Assuming the RTT is 500 ms, packet size is 1500 bytes, the speed

4) (10 pts) (5 pts) Consider the cross-country example studied in class. Assuming the RTT is 500 ms, packet size is 1500 bytes, the speed of the link is 1 gb/s (10 bits/s), what is the link utilization if rdt 3.0 is used? What is the link utiliza- tion if GBN with window size n = 5 is used? a) (5 pts) How big would the window size (i.e. umber of packets) have to be for the channel utilization of a pipelined protocol to be greater than 70%? b)

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