The document is a chapter about TCP/IP that contains 15 figures illustrating concepts related to TCP/IP such as how the internet is structured according to TCP/IP, how TCP/IP relates to the OSI model, the format of IP datagrams and addresses, classes of IP addresses, subnetting, ARP, port addresses, and the format of UDP and TCP packets.

1. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Chapter 24
TCP/IP

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Figure 24-1
An Internet According to TCP/IP

3. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-2
TCP/IP and the OSI Model

4. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-3
IP Datagram

5. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-4
Internet Address

6. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-5
Internet Classes

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Figure 24-6
IP Addresses in Decimal Notation

8. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-7
Class Ranges of Internet Addresses

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Figure 24-8
Network and Host Addresses

10. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-9
A Network with Two Levels of Hierarchy

11. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-10
A Network with Three Levels of Hierarchy

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Figure 24-11
Addresses with and without Subnetting

13. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-12
Masking

14. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-13
ARP

15. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-14
Port Addresses

16. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-15
UDP Datagram Format

17. McGraw-Hill ©The McGraw-Hill Companies, Inc., 2001
Figure 24-16
TCP Segment Format