Wire pairs are links between information transmitters and receivers. Nowadays they are used for low frequency short distance communications, e.g. doorbells.
What are Coaxial cables?(constructure, uses)
2 wire conductors, a signal transmits through a conductor which is surrounded by an insulator, an earthed wire braid protects from any interference.
What are 3 advantages of optical fibres compared to coaxial cables?
1. Larger bandwidth. 2. Lower attenuation of signal. 3. More secure.
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