1. Consider a path from host A to host B through a router X as follows:A--X-BThe capacity of the link AX is denoted Ra, while the capacity of the link XB is denoted Rbin units of [bits/s]. Assume that Ra < Rb. Suppose host A sends a pair of packets to HostB and there is no other traffic on the path. Assume each packet is of size L [bits] and bothlinks have the same propagation delay dprop-(a) What is the packet inter-arrival time at the destination?(b) Now assume that Ra > Ri. Is it possible that the second packet queues at input queue ofthe second link? Explain. Now suppose that host A sends the second packet T secondsafter sending the first packet. How large must T be to ensure no queueing before thesecond link? Explain.

Given in the question, The bandwidth of AX< Bandwidth of XB. We can say XB or BX because the…

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Consider a path from host A to host B through a router X as follows:

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

1. Consider a path from host A to host B through a router X as follows:
A-
-X-B
The capacity of the link AX is denoted Ra, while the capacity of the link XB is denoted Rb
in units of [bits/s]. Assume that Ra < Rb. Suppose host A sends a pair of packets to Host
B and there is no other traffic on the path. Assume each packet is of size L [bits] and both
links have the same propagation delay dprop-
(a) What is the packet inter-arrival time at the destination?
(b) Now assume that Ra > Ri. Is it possible that the second packet queues at input queue of
the second link? Explain. Now suppose that host A sends the second packet T seconds
after sending the first packet. How large must T be to ensure no queueing before the
second link? Explain.

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