Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Operating Systems CPU Scheduling Disk Scheduling
Consider a disk system having 60 cylinders. Disk requests are received by a disk drive for cylinders 10, 22, 20, 2, 40, 6, and 38, in that order. Assuming the disk head is currently at cylinder 20, what is the time taken to satisfy all the requests if it takes 2 milliseconds to move from one cylinder to an adjacent one and Shortest Seek Time First (SSTF) algorithm is used ?
1
240 milliseconds
2
96 milliseconds
3
120 milliseconds
4
112 milliseconds