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A+ Study Guide: Networking

Fiber (Single, Multi-mode)
What is Fiber-Optic Cable?

It is a cabling technology that uses optical fibers to carry digital data signals in the form of modulated pulses of light. The core of fiber-optic cable is made of glass or plastic and the cladding that are enclosed by a protective coating. Outer insulating jacket is made of Teflon or PVC. Kevlar fibers are used to strengthen the cable and prevent from breakages.

A brief overview of the advantages of fiber-optic cable over coaxial and twisted pair:

  • Speed: Fiber optic networks operate at high speeds in the gigabits range.

  • Bandwidth: High-capacity data transmission.

  • Distance: Due to lack of attenuation Signals can be transmitted over long distances without using repeaters.

  • Resistance: Greater resistance to outside interferences such as radios, motors and electromagnetic noise.

  • Expensive and very fragile.

Let us look at the 2 types of fiber-optic cables.

 
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