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2. Suppose that N packets are in the queue of a router, and that the router is transmitting a packet. Suppose also that x bits of the currently-being- transmitted packet has been transmitted. Assume that all packets are composed of L bits, and that the output link of the router has a transmission rate of R bits/sec. What is the queuing delay of the Nth (3 points) (last) packet in the queue of the router?
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Answer #1

Answer is as follows:

Length of packets : L bits

Transmkission Rate : R bits/sec.

There is no queing delay for the first packet as itn arrives gets departure.

If there is second packet transfer there is queing delay of L/R seconds....

if there is third packet transfer there is queing delay of 2*L/R seconds.

so now for calculating the queing delay of nth packet the formula is:

( n - 1 ) * L / R seconds

where n is nth packet.

if there is any query please ask in comments....

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