We have an operating system, which is capable of loading and executing a single sequential user process at a time. If the disk head scheduling algorithm which is initially First Come First Served (FCFS) is replaced by Shortest Seek Time First (SSTF) claimed by the vendor to give 50% better benchmark results then what is the expected improvement in the I / O performance of the user programs?

We have an operating system, which is capable of loading and executing

1.	We have an operating system, which is capable of loading and executing a single sequential user process at a time. If the disk head scheduling algorithm which is initially First Come First Served (FCFS) is replaced by Shortest Seek Time First (SSTF) claimed by the vendor to give 50% better benchmark results then what is the expected improvement in the I / O performance of the user programs?
A.	0%
B.	25%
C.	50%
D.	75%
Answer» B. 25%

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