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Operating Systems · End Term · 13 Apr 2025 · January 2025 term · Set 1-2

Question 12: Consider a disk scheduling scenario where the requests a…

Question 12

+3 marksNumerical answer

Consider a disk scheduling scenario where the requests are serviced using the SSTF (Shortest Seek Time First) algorithm. The disk head starts at track 50, and the following track requests arrive:
[45, 70, 35, 55, 48, 85, 60, 40, 30]
What is the total number of head movements required to service all the requests using the SSTF algorithm?

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Correct answer: 75

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Question 12 of 15 in the IIT Madras BS Operating Systems (Operating Systems) End Term paper sat on 13 Apr 2025, in the January 2025 term (IIT M DEGREE AN EXAM QDB4 13 Apr 2025). It carries 3 marks.

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