UTpaper

Free mock tests & test series

Question 116Asked in BPSC TRE 3.0 (2024) Computer Science Class 11-12

Consider a disk queue with requests for I/O to blocks on cylinders. 98 183 37 122 14 124 65 67 considering FCFS (First Come First Served) scheduling, the…

Consider a disk queue with requests for I/O to blocks on cylinders. 98 183 37 122 14 124 65 67 considering FCFS (First Come First Served) scheduling, the total number of head movements is, if the disk head is initially at 53 is?
  1. A640
  2. B620
  3. C630
  4. DMore than one of the above
  5. ENone of the above
Show answerHide answer

Correct answer: (A) 640

Explanation

Head movements: 53→98 (45), 183 (85), 37 (146), 122 (85), 14 (108), 124 (110), 65 (59), 67 (2). The total is 640 cylinders.

From BPSC TRE 3.0 (2024) Computer Science Class 11-12 — Previous Year Paper

This is question 116 of BPSC TRE 3.0 (2024) Computer Science Class 11-12 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.