Question

In: Computer Science

Suppose THREE packets, each of length, L = 20 bits arrive at a router at the...

Suppose THREE packets, each of length, L = 20 bits arrive at a router at the same time. Assume that there are no packets being transmitted or queued at the router. Let the router's transmission rate, R = 5 bit/seconds.

1.What is the queuing delay for each of these 3 packets?

2.What is the average queuing delay for the 3 packets?

3.Suppose the speed of propagation is s m/s, the distance between A and B is d meters, and the transmission rate of the link between A and B is R bps.Consider sending two packets of size L1 bits and L2 bits from A to B.

What is the total delay of sending these two packets from A to B in terms of L1, L2, R, d and s? Ignore the processing delay.

Solutions

Expert Solution

Queuing delay for 3 packets first packet some bytes According to rate are transmitted instantaneously while some bytes remain in queue.Second packet transmission starts when first end so queuing delay of first is added to second.Similarly for 3rd packet queuing delay of first and second packets are added

transimission time (tt)=packet size/link bw and propogation time(tp)=distance/speed of signal

total delay=

venereology answered 3 months ago
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