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Disk schdeuling

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Consider the following cylinder requests of disk coming in the given order

10,22,20,2,40,6,38

Assume the disk head is currently positioned at cylinder 20.Seek time takes 6ms.How many number of cylinder moves are taken for the given requests head using the SCAN schdeuling? (Assume initally head is head is moving upwards)

a)58   b)60  c) 62  d)  64

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