Interactive end-of-chapter exercises


Computing the one-hop transmission delay

Consider the figure below, in which a single router is transmitting packets, each of length L bits, over a single link with transmission rate R Mbps to another router at the other end of the link.


network


Suppose that the packet length is L= 4000 bits, and that the link transmission rate along the link to router on the right is R = 10 Mbps.

Round your answer to two decimals after leading zeros



Question List


1. What is the transmission delay?

2. What is the maximum number of packets per second that can be transmitted by this link?




Solution


The transmission delay = L/R = 4000 bits / 10000000 bps = 0.0004 seconds

The number of packets that can be transmitted in a second into the link = R / L = 10000000 bps / 4000 bits = 2500 packets



That's incorrect

That's correct

The answer was: 0.0004

Question 1 of 2

The answer was: 2500

Question 2 of 2

Try Another Problem

We’d appreciate your leave us feedback on this networking tutor.

We gratefully acknowledge the programming and problem design work of John Broderick (UMass '21), which has really helped to substantially improve this site. The networking tutor was designed and implemented by Hashim Zia and Shayan Ahmad from New York University Abu Dhabi.

Copyright © 2010-2025 J.F. Kurose, K.W. Ross
Comments welcome and appreciated: kurose@cs.umass.edu