This chapter introduces data communication networks and their basic components. It discusses protocols and standards, as well as standard organizations. Figures 1-1, 1-2 and 1-3 provide illustrations of data communication system components, the layers of the OSI reference model, and examples of network standards.

1. Chapter 1 Introduction Data Communication Networks Protocols and Standards Standard Organizations WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

2. Figure 1-1 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998 Data Communication System Components

3. Figure 1-2 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

4. Figure 1-3 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998