Directions (Q96–100): Consider the following disk queue with requests for I/O to blocks on cylinders:
45, 81, 185, 33, 175, 99, 150, 77
(Consider that the head starts from location 58.)
What shall be the total head movement of cylinders if the FCFS disk scheduling method is used?
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Correct answer: C. 647
Explanation
58→45 (13), →81 (36), →185 (104), →33 (152), →175 (142), →99 (76), →150 (51), →77 (73). Total = 647.More System Software and Operating System questions
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