A disk scheduling mechanism in an operating system causes the disk arm to sweepback and forth across the disk surface servicing

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问题 A disk scheduling mechanism in an operating system causes the disk arm to sweepback and forth across the disk surface servicing all requests in its path.This is a

选项 A、First Come First Serve
B、Shortest Seek Time First
C、Scan
D、None of the above

答案C

解析
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