Read Chapter 15 in your text and lesson 15, then complete this homework. Work to understand all problems even though all problems may not be assigned.

1. Sketch a TCP header and label the fields within it.  Show the number of bits in each field.

2. Explain the purpose of the following TCP header fields:

a. Source Port

b. Destination Port

c. Acknowledgment Number

d. Window

3. What is the overhead percentage of a 520 kbit MS Word file encapsulated in both a TCP and an IP header when neither header has any options?

4.  How does TCP provide connection oriented service if IP only provides a connectionless service as support for TCP?

5. Sketch a UDP header and label the fields within it.  Show the number of bits in each field.

6. Why do TCP and UDP assign port numbers to layer 5 services?

7. Contrast the features of TCP with UDP.

8. When would it be appropriate to specify UDP as a service, rather than TCP?

9. Why is flow control at the transport layer complicated when compared to the link layer?

10. Why does TCP use a three-way handshake instead of a two-way handshake?

Used with permission of the Author; Copyright (C) Kevin A. Shaffer 1998 - 2018, all rights reserved.