This document contains figures and captions about different types of computer networks including simplex, half-duplex, full-duplex, local area networks, metropolitan area networks, wide area networks, and internetworks, but provides no additional context or explanation for the figures.

1. Figure 2-11
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998

2. Figure 2-12
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Simplex

3. Figure 2-13
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Half-Duplex

4. Figure 2-14
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Full-Duplex

5. Figure 2-15
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998

6. Figure 2-16
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Local Area Network

7. Figure 2-16-continued
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Local Area Network

8. Figure 2-17
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Metropolitan Area Network

9. Figure 2-18
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Wide Area Network

10. Figure 2-19
WCB/McGraw-Hill © The McGraw-Hill Companies, Inc., 1998
Internetwork
(Internet)