The document discusses different types of transmission media including guided and unguided media. It provides figures and descriptions of various guided media such as twisted-pair cable, coaxial cable, and optical fiber. It explains concepts such as refraction, critical angle, reflection, and different types of optical fibers including multimode step-index, multimode graded-index, and single mode fiber.

2. Electromagnetic Spectrum Figure 7-1 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

3. Figure 7-2 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

4. Figure 7-3 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

5. Twisted-Pair Cable Figure 7-4 and 7-5 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

6. Effect of Noise on Parallel Lines Figure 7-6 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

7. Noise on Twisted-Pair Lines Figure 7-7 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

8. Unshielded Twisted-Pair Cable Figure 7-8 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

9. UTP Connectors Figure 7-9 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

10. Shielded Twisted-Pair Cable Figure 7-10 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

11. Coaxial Cable Figure 7-11 and 7-12 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

12. Refraction Figure 7-13 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

13. Critical Angle Figure 7-14 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

14. Reflection Figure 7-15 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

15. Figure 7-16 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

16. Multimode Step-Index Figure 7-17 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

17. Multimode Graded-Index Figure 7-18 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

18. Single Mode Figure 7-19 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

19. Fiber Construction Figure 7-20 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998