Interactive end-of-chapter exercises

Supplement to Computer Networking: A Top Down Approach 8th Edition

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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.


Suppose that the packet length is L= 12000 bits, and that the link transmission rate along the link to router on the right is R = 1000 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?


The transmission delay = L/R = 12000 bits / 1000000000 bps = 1.20E-5 seconds

The number of packets that can be transmitted in a second into the link = R / L = 1000000000 bps / 12000 bits = 83333 packets

That's incorrect

That's correct

The answer was: 1.20E-5

Question 1 of 2

The answer was: 83333

Question 2 of 2

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