Need help with Operating System Question. 1 question(2 parts)

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fuva777

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Operating System Question 1. For each part of this question, assume that the disk has a total of 100 cylinders. a. Suppose that the disk head scheduling policy is shortest seek time first (SSTF). The disk heads are currently positioned over cylinder 42 and requests are queue for data on cylinders 27, 40, 90, 37, 15, 67 What will be the total distance (in cylinders) traveled by the disk heads to serve the six queued requests? b. Suppose instead that the disk head scheduling policy is SCAN (elevator). The disk heads are initially positioned over cylinder 42 and the current direction of travel of the heads is “up”, i.e., towards higher numbered cylinders. For the same set of queued requests given in part (a), what will be the total distance (in cylinders) traveled by the disk heads to service the requests?
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