The document discusses different types of network topologies including point-to-point, multipoint, mesh, star/tree, ring, and bus topologies. It provides details on the characteristics of each topology such as how the devices are connected, advantages and disadvantages of each approach, and examples of applications where different topologies may be used.

4. Data Communication System Components

7. Point-to-Point Line Configuration

8. Point-to-Point Line Configuration

9. Point-to-Point Line Configuration

10. Multipoint Line Configuration

12. Simplex

13. Half-Duplex

14. Full-Duplex

17. Local Area Network

18. Local Area Network

19. Metropolitan Area Network

20. Wide Area Network

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