1. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Chapter 7 Transmission Media

2. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.1 Transmission medium and physical layer

3. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.2 Classes of transmission media

4. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 7.1 Guided Media Twisted-Pair Cable Coaxial Cable Fiber-Optic Cable

5. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.3 Twisted-pair cable

6. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.4 UTP and STP

7. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Table 7.1 Categories of unshielded twisted-pair cables CategoryBandwidthData RateDigital/AnalogUse 1very low< 100 kbpsAnalogTelephone 2 < 2 MHz2 MbpsAnalog/digitalT-1 lines 3 16 MHz 10 MbpsDigitalLANs 4 20 MHz 20 MbpsDigitalLANs 5 100 MHz 100 MbpsDigitalLANs 6 (draft) 200 MHz 200 MbpsDigitalLANs 7 (draft) 600 MHz 600 MbpsDigitalLANs

8. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.5 UTP connector

9. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.6 UTP performance

10. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.7 Coaxial cable

11. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Table 7.2 Categories of coaxial cables CategoryImpedanceUse RG-59 75 Cable TV RG-58 50 Thin Ethernet RG-11 50 Thick Ethernet

12. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.8 BNC connectors

13. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.9 Coaxial cable performance

14. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.10 Bending of light ray

15. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.11 Optical fiber

16. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.12 Propagation modes

17. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.13 Modes

18. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Table 7.3 Fiber types TypeCoreCladdingMode 50/125 50125Multimode, graded-index 62.5/125 62.5125Multimode, graded-index 100/125100125Multimode, graded-index 7/125 7125Single-mode

19. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.14 Fiber construction

20. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.15 Fiber-optic cable connectors

21. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.16 Optical fiber performance

22. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 7.2 Unguided Media: Wireless Radio Waves Microwaves Infrared

23. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.17 Electromagnetic spectrum for wireless communication

24. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.18 Propagation methods

25. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Table 7.4 Bands BandRangePropagationApplication VLF3–30 KHzGroundLong-range radio navigation LF30–300 KHzGround Radio beacons and navigational locators MF300 KHz–3 MHzSkyAM radio HF3–30 MHzSky Citizens band (CB), ship/aircraft communication VHF30–300 MHz Sky and line-of-sight VHF TV, FM radio UHF300 MHz–3 GHzLine-of-sight UHF TV, cellular phones, paging, satellite SHF3–30 GHzLine-of-sightSatellite communication EHF30–300 GHzLine-of-sightLong-range radio navigation

26. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.19 Wireless transmission waves

27. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.20 Omnidirectional antennas

28. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Radio waves are used for multicast communications, such as radio and television, and paging systems. Note:

29. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Figure 7.21 Unidirectional antennas

30. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Microwaves are used for unicast communication such as cellular telephones, satellite networks, and wireless LANs. Note:

31. McGraw-Hill©The McGraw-Hill Companies, Inc., 2004 Infrared signals can be used for short- range communication in a closed area using line-of-sight propagation. Note: