Computer Networking : A Top-Down Approach

Computer Networking : A Top-down Approach

Authors: James F. Kurose, Keith W. Ross
ISBN: 9780132856201
Edition: 6
Chapter: Computer Networks And The Internet
Exercise: Problems
Question: 3

 

Question by Anonymous on 25 Oct, 2017 at 05:27 AM

Consider an application that transmits data at a steady rate (for example, the sender generates an N-bit unit of data every k time units, where k is small and fixed). Also, when such an application starts, it will continue running for a relatively long period of time. Answer the following questions, briefly justifying your answer:

a. Would a packet-switched network or a circuit-switched network be more appropriate for this application? Why?

b. Suppose that a packet-switched network is used and the only traffic in this network comes from such applications as described above. Furthermore, assume that the sum of the application data rates is less than the capacities of each and every link. Is some form of congestion control needed? Why?

Answer by Geroge on 28 Feb, 2018 at 07:31 AM

a)

Circuit-switched network is the more appropriate for this application.

Reason: Fixed bandwidht and long sessions invloved.

b)

Consider that a packet-switched network is used and the only traffic in this network comes from such applications as described above. Furthermore, assume that the sum of the application data rates is less than the capacities of each and every link.In that time congestion control is needed. The reason is that sufficient bandwidth of the link is enabled to completed the task of application.

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Discussions

R Pandya on 24 Aug, 2018 at 11:03 PM


Assuming the sum of the application data rates is less than the capacities of each and every link, no congestion control is needed even in wost case scenario.

Post the discussion improve the above solution.