A disk scheduling algorithm in an operating system causes the disk arm to move back and forth across the disk surface in order to service all requests in its path. This is a

A. First come first served

B. Shortest Seek Time First (SSTE)

C. Scan

D. FIFO

E. None of the above

Answer: Option C

Solution(By Examveda Team)

A disk scheduling algorithm in an operating system causes the disk arm to move back and forth across the disk surface in order to service all requests in its path. In SCAN disk scheduling algorithm, head starts from one end of the disk and moves towards the other end, servicing requests in between one by one and reach the other end.