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UGC CS-2013, Ques 46

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46. A client-server system uses a satellite network, with the satellite at a height of 40,000 kms. What is the best-case delay in responses to a request? (Note that the speed of light in air is 3,00,000 km/second).

(A) 133.33 m sec
(B) 266.67 m sec
(C) 400.00 m sec
(D) 533.33 m sec

Why Ans is D not B ?
 

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