CDA 4527: Computer Communication Networks

Fall 2007

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Homework 2

(assigned 10/2; due: 10/9, submitted in class by hard-copy)

1. Chapter 3, problem 1.

2. Chapter 3, problem 4. 

3. Chapter 3, problem 12. 

4. Chapter 3, problem 21. Justify your answer even if the answer is true. For 21(a), you should justify it by drawing a protocol running example.

5. Chapter 3, problem 23. For 23(b), assume that the network is perfect and there is no error or retransmissions.

6. Chapter 3, problem 33.

7. Consider the cross-country example shown in lecture notes Chapter3-part2.ppt (page 9-12). How big would the window size have to be for the channel utilization to be greater than 90 percent?