CCENT-CCNA:ICND1 100-105 Certification Guide
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Fibre optic

Fibre optic, as in Figure 1.25, is a cable made up of glass through which the light is transmitted. Based on the light transmission, it is offered in two modes:

  • Single mode utilizes only one light, and can reach a length from 40 km to 60 km
  • Multimode utilizes multiple lights, and can reach a length from 2 km to 3 km.

Apart from its traditional usage in WANs, today fibre optic is used a lot for the implementation of fiber to the home (FTTH), and MAN networks:

Figure 1.25. Fibre optic cable