The one way propagation delay for a single bit of information (travelling at the speed of light i.e. 3×108 meters per second) over a fiber optic cable from point A to point B, 12000 kilometers apart would be :
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Correct answer: D. 40 ms
Explanation
Propagation delay equals distance divided by signal speed. Here the distance is 12000 km = 1.2×107 m and the speed is given as 3×108 m/s. Delay = (1.2×107) / (3×108) = 0.04 s = 40 ms.More Data Communication and Computer Networks questions
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