Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Operating Systems CPU Scheduling Disk Scheduling
The head of a moving head disk with 200 tracks, numbered 0 to 199, has just finished a request at track 125, and currently serving a request at track 143. The queue of requests is given in the FIFO order as 86, 147, 91, 177, 94, 150, 102, 175, 130. What will be the total number of head movements required to satisfy these requests for SCAN algorithm ?
1
259 cylinders
2
169 cylinders
3
154 cylinders
4
264 cylinders