Suppose we have a disk with 512 cylinders, and the disk is currently at cylinder 110 and the disk queue contains read/write requests for sectors on cylinders 84, 302, 103, 96, 407 and 113. (Cylinders start at number 1 traverse towards 1).
How far must the head travel to satisfy the requests in the queue using the SCAN arm scheduling strategy?
1
639 cylinders
2
515 cylinders
3
622 cylinders
4
1120 cylinders
5
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