1. 1 © 2004, Cisco Systems, Inc. All rights reserved. CCNA 1 v3.1 Module 3 Networking Media

2. 222 © 2004, Cisco Systems, Inc. All rights reserved. Objectives

3. 333 © 2004, Cisco Systems, Inc. All rights reserved. Atoms and Electrons

4. 444 © 2004, Cisco Systems, Inc. All rights reserved. Atoms and Electrons

5. 555 © 2004, Cisco Systems, Inc. All rights reserved. Atoms and Electrons

6. 666 © 2004, Cisco Systems, Inc. All rights reserved. Atoms and Electrons

7. 777 © 2004, Cisco Systems, Inc. All rights reserved. Voltage

8. 888 © 2004, Cisco Systems, Inc. All rights reserved. Resistance and Impedance

9. 999 © 2004, Cisco Systems, Inc. All rights reserved. Current Flow

10. 10 © 2004, Cisco Systems, Inc. All rights reserved. Circuits

11. 11 © 2004, Cisco Systems, Inc. All rights reserved. Circuits

12. 12 © 2004, Cisco Systems, Inc. All rights reserved. Cable Specifications

13. 13 © 2004, Cisco Systems, Inc. All rights reserved. Coaxial Cable

14. 14 © 2004, Cisco Systems, Inc. All rights reserved. Shielded Twisted-Pair Cable

15. 15 © 2004, Cisco Systems, Inc. All rights reserved. Unshielded Twisted Pair (UTP)

16. 16 © 2004, Cisco Systems, Inc. All rights reserved. Unshielded Twisted Pair (UTP)

17. 17 © 2004, Cisco Systems, Inc. All rights reserved. Unshielded Twisted Pair (UTP)

18. 18 © 2004, Cisco Systems, Inc. All rights reserved. Unshielded Twisted Pair (UTP)

19. 19 © 2004, Cisco Systems, Inc. All rights reserved. Unshielded Twisted Pair (UTP)

20. 20 © 2004, Cisco Systems, Inc. All rights reserved. Unshielded Twisted Pair (UTP)

21. 21 © 2004, Cisco Systems, Inc. All rights reserved. Unshielded Twisted Pair (UTP)

22. 22 © 2004, Cisco Systems, Inc. All rights reserved. The Electromagnetic Spectrum

23. 23 © 2004, Cisco Systems, Inc. All rights reserved. Ray Model of Light

24. 24 © 2004, Cisco Systems, Inc. All rights reserved. Ray Model of Light

25. 25 © 2004, Cisco Systems, Inc. All rights reserved. Reflection

26. 26 © 2004, Cisco Systems, Inc. All rights reserved. Reflection

27. 27 © 2004, Cisco Systems, Inc. All rights reserved. Refraction

28. 28 © 2004, Cisco Systems, Inc. All rights reserved. Total Internal Reflection

29. 29 © 2004, Cisco Systems, Inc. All rights reserved. Total Internal Reflection

30. 30 © 2004, Cisco Systems, Inc. All rights reserved. Total Internal Reflection

31. 31 © 2004, Cisco Systems, Inc. All rights reserved. Multimode Fiber

32. 32 © 2004, Cisco Systems, Inc. All rights reserved. Multimode Fiber

33. 33 © 2004, Cisco Systems, Inc. All rights reserved. Multimode Fiber

34. 34 © 2004, Cisco Systems, Inc. All rights reserved. Multimode Fiber

35. 35 © 2004, Cisco Systems, Inc. All rights reserved. Multimode Fiber

36. 36 © 2004, Cisco Systems, Inc. All rights reserved. Multimode Fiber

37. 37 © 2004, Cisco Systems, Inc. All rights reserved. Single-mode Fiber

38. 38 © 2004, Cisco Systems, Inc. All rights reserved. Optical Media

39. 39 © 2004, Cisco Systems, Inc. All rights reserved. Signals and Noise in Optical Fibers

40. 40 © 2004, Cisco Systems, Inc. All rights reserved. Scattering

41. 41 © 2004, Cisco Systems, Inc. All rights reserved. Bending

42. 42 © 2004, Cisco Systems, Inc. All rights reserved. Fiber End Face Finishes

43. 43 © 2004, Cisco Systems, Inc. All rights reserved. Fiber End Face Polishing Techniques

44. 44 © 2004, Cisco Systems, Inc. All rights reserved. Splicing

45. 45 © 2004, Cisco Systems, Inc. All rights reserved. Calibrated Light Sources and Light Meter

46. 46 © 2004, Cisco Systems, Inc. All rights reserved. Wireless LAN Standards

47. 47 © 2004, Cisco Systems, Inc. All rights reserved. Internal Wireless NIC for Desktop or Server

48. 48 © 2004, Cisco Systems, Inc. All rights reserved. PCMCIA NIC for Laptop

49. 49 © 2004, Cisco Systems, Inc. All rights reserved. External USB Wireless NIC

50. 50 © 2004, Cisco Systems, Inc. All rights reserved. Access Point

51. 51 © 2004, Cisco Systems, Inc. All rights reserved. Wireless LAN

52. 52 © 2004, Cisco Systems, Inc. All rights reserved. Roaming

53. 53 © 2004, Cisco Systems, Inc. All rights reserved. IEEE 802.3 Wireless Frame Types

54. 54 © 2004, Cisco Systems, Inc. All rights reserved. Adaptive Frame Types

55. 55 © 2004, Cisco Systems, Inc. All rights reserved. Authentication and Association Types Forming an Association is an 8 step process: 1.Clients start off being Unauthenticated and unassociated 2.All access points (AP’s) transmit a beacon management frame at a fixed interval 3.Clients listens for beacon messages to identify AP’s in range 4.The client selects a network it wishes to join 5.The client and AP send management frames to each other, and perform mutual authentication 6.If authentication is successful, the client is Authenticated, but remains unassociated. (The AP knows who it is, but is yet to allocate resources to it) 7.Client sends association request frames to the AP, which responds with association response frames. 8.Client is granted access to services, and thus becomes Associated.

56. 56 © 2004, Cisco Systems, Inc. All rights reserved. Radio Wave

57. 57 © 2004, Cisco Systems, Inc. All rights reserved. Modulation

58. 58 © 2004, Cisco Systems, Inc. All rights reserved. Omni Directional Antenna

59. 59 © 2004, Cisco Systems, Inc. All rights reserved. Wireless Security