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

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

Computer Networking: A Top-Down Approach (7th Edition)
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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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.
Transcribed Image Text: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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