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单选题:Suppose that a disk drive has 50 cylinders, numbered 0 to 49. Th

Luz3年前 (2021-05-10)题库793
Suppose that a disk drive has 50 cylinders, numbered 0 to 49. The drive is currently serving a request at cylinder 14, and the previous request was at a cylinder smaller than 14. The queue of pending requests is: 8, 15, 9, 35, 25, 30, 40,5. Please select the closest answer.

What is the total distance (in cylinders) that the disk arm moves to satisfy all the pending requests for C-LOOK? @[D](1)
A. 10
B. 20
C. 29
D. 30



A.10
B.20
C.29
D.30


答案:D

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