Disk requests arrive at the disk driver

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Reference no: EM13163581

Disk requests arrive at the disk driver for cylinders, 45, 97,21,43,11,69,81,8,55,14,78,74, and 7. A seek takes 5 milliseconds per cylinder moved. Assume that the arm starts initially at cylinder 50 and was moving downward.

How much seek time is needed for:

A) First-come, first served.

B) Closest cylinder next.

C) Elevator algorithm.

Reference no: EM13163581

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