Chapter 2 The Physical Layer.

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Presentation transcript:

Chapter 2 The Physical Layer

Guided Transmission Data Magnetic Media Twisted Pair Coaxial Cable Fiber Optics

Twisted Pair (a) Category 3 UTP. (b) Category 5 UTP.

Coaxial Cable A coaxial cable.

Fiber Optics (a) Three examples of a light ray from inside a silica fiber impinging on the air/silica boundary at different angles. (b) Light trapped by total internal reflection.

Fiber Cables (a) Side view of a single fiber. (b) End view of a sheath with three fibers.

A fiber optic ring with active repeaters. Fiber Optic Networks A fiber optic ring with active repeaters.

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