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國立政治大學 2025 · 考試 · 第 31 題

Consider a disk queue holding requests to the following cylinders in the listed order: 210, 67, 10, 99, 87, 90, 19, 149. Using the C-SCAN scheduling algorithm, what is the order that the requests are serviced, assuming the disk head is at cylinder 89 and moving upward through the cylinders?

(A)
87 - 90 - 99 - 67 - 19 - 10 - 149 - 210
(B)
210 - 67 - 10 - 99 - 87 - 90 - 19 - 149
(C)
90 - 99 - 149 - 210 - 10 - 19 - 67 - 87
(D)
90 - 99 - 149 - 210 - 87 - 67 - 19 - 10

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