Paper 1 · ICT
UGC NET December 2021 June 2022 (09.07.2022) Shift-I
With respect to data communication, which of the following statements is true about fibre optic cable?
AIt carries data in pulses of light and is prone to interference
BIt carries data as electronic signals and is not prone to interference
CIt carries data as electronic signals and is prone to interference
DIt carries data in pulses of light and is not prone to interference ✓ Correct
Correct answer: (D) It carries data in pulses of light and is not prone to interference — Fibre optic cable carries data in pulses of light and is not prone to interference, so option D is correct.
Explanation
★Fibre optic cable carries data in pulses of light and is not prone to interference, so option D is correct.
★It transmits information as light signals through thin strands of glass or plastic.
★Because it uses light, not electricity, it is immune to electromagnetic interference.
★This allows high speed, high capacity, long distance data transmission with little loss.
★It is widely used for internet, television, and telephone backbone networks.
★Copper cables carry electronic signals and are more prone to interference.
★So only the light based, interference free description fits fibre optic cable.
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