Q. 40 Suppose the following disk request sequence (track numbers) for a disk with 100
tracks is given : 45, 20, 90, 10, 50, 60, 80, 25, 70. Assume that the initial position
of the R/W head is on track 50. The additional distance that will be traversed
by the R/W head when the Shortest Seek Time First (SSTF) algorithm is used
compared to the SCAN (Elevator) algorithm (assuming that SCAN algorithm
moves towards 100 when it starts execution) is ______ tracks.
(A) 8
(B) 9
(C) 10
(D) 11
Answer: (C)
Explanation:
