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Directions (Q96–100): Consider the following disk queue with requests for I/O to blocks on cylinders:
45, 81, 185, 33, 175, 99, 150, 77
(Consider that the head starts from location 58.)

What shall be the 2nd request processed by the C-LOOK (Right) disk scheduling technique for the given request queue?

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Correct answer: A. 81

Explanation

C-LOOK moving right from 58 serves 77, 81, 99, 150, 175, 185, then jumps to 33 and serves 33, 45. The 2nd request is 81.

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