UGC NET Computer Science December 2019 | Question 127

Question 127

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Consider the following statements :
(a) Fiber optic cable is much lighter than copper cable.
(b) Fiber optic cable is not affected by power surges or electromagnetic interference.
(c) Optical transmission is inherently bidirectional.
Which of the statements is (are) correct?

1. 1. Only (a) and (b)
2. 2. Only (a) and (c)
3. 3. Only (b) and (c)
4. 4. (a), (b) and (c)

Answer : 1. Only (a) and (b)

Explanation Question 127

1. Fiber optic cable is much lighter than copper cable. True
2. Fiber optic cable is not affected by power surges or electromagnetic interference. True
3. Optical transmission is inherently bidirectional. False

Given statement (c) is false because bidirectional Fiber Optics can be implemented with by WDM (Wavelength-division multiplexing) or by rearranging two unidirectional Fibers, its not inherently bidirectional.

Only given options (a) and (b) are correct statements on Fibre optics.

So, option 1 is correct answer

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