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CCNA 1 v3.1 Module 3 Networking Media

CCNA 1 v3.1 Module 3 Networking Media. Objectives. Atoms and Electrons. Atoms and Electrons.

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CCNA 1 v3.1 Module 3 Networking Media

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  1. CCNA 1 v3.1 Module 3 Networking Media

  2. Objectives

  3. Atoms and Electrons

  4. Atoms and Electrons

  5. Coulomb's Electric Force Law states that opposite charges react to each other with a force that causes them to be attracted to each other. Like charges react to each other with a force that causes them to repel each other. • Loosened electrons that do not move and have a negative charge are called static electricity. If these static electrons have an opportunity to jump to a conductor, this can lead to electrostatic discharge (ESD).

  6. Atoms and Electrons

  7. Atoms and Electrons

  8. Voltage

  9. Resistance and Impedance

  10. Current Flow

  11. Circuits

  12. Circuits

  13. Cable Specifications Digital or baseband transmission and analog or broadband transmission require different types of cable. 

  14. Coaxial Cable

  15. Shielded Twisted-Pair Cable

  16. Unshielded Twisted Pair (UTP)

  17. Unshielded Twisted Pair (UTP)

  18. Unshielded Twisted Pair (UTP)

  19. Unshielded Twisted Pair (UTP)

  20. Unshielded Twisted Pair (UTP)

  21. Unshielded Twisted Pair (UTP)

  22. Unshielded Twisted Pair (UTP)

  23. The Electromagnetic Spectrum

  24. Optical • The wavelength of the light in optical fiber is either 850 nm, 1310 nm, or 1550 nm. These wavelengths were selected because they travel through optical fiber better than other wavelengths.

  25. light travels at different, slower speeds through other materials like air, water, and glass. When a light ray called the incident ray, crosses the boundary from one material to another, some of the light energy in the ray will be reflected back

  26. The entering ray will be bent at an angle from its original path. This ray is called the refracted ray. How much the incident light ray is bent depends on the angle at which the incident ray strikes the surface of the glass and the different rates of speed at which light travels through the two substances.

  27. Ray Model of Light

  28. Ray Model of Light

  29. Reflection

  30. Reflection

  31. Refraction

  32. Total Internal Reflection

  33. Total Internal Reflection

  34. Total Internal Reflection

  35. Multimode Fiber

  36. Multimode Fiber

  37. Multimode Fiber

  38. Multimode Fiber

  39. Multimode Fiber

  40. Multimode Fiber

  41. Single-mode Fiber

  42. Optical Media

  43. Signals and Noise in Optical Fibers

  44. Scattering

  45. Bending

  46. Fiber End Face Finishes

  47. Fiber End Face Polishing Techniques

  48. Splicing

  49. Calibrated Light Sources and Light Meter

  50. Wireless LAN Standards wireless technology does not provide the high-speed transfers, security, or uptime reliability of cabled networks

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