Disk Scheduling

What is FCFS Disk Scheduling?

• A disk scheduling algorithm where requests are processed in the order they arrive.

• A disk scheduling algorithm where requests are processed in a random order.

• A disk scheduling algorithm where requests are processed in the reverse order they arrive.

• A disk scheduling algorithm where requests are processed based on their priority level.

What is SSTF Disk Scheduling?

• SSTF Disk Scheduling is a disk scheduling algorithm that selects the request with the shortest seek time from the current head position.

• SSTF Disk Scheduling is a disk scheduling algorithm that selects the request with the largest file size from the current head position.

• SSTF Disk Scheduling is a disk scheduling algorithm that selects the request with the highest priority from the current head position.

• SSTF Disk Scheduling is a disk scheduling algorithm that selects the request with the longest seek time from the current head position.

Which disk scheduling algorithm selects the request that is closest to the current head position?

• FCFS

• SCAN

• C-LOOK

• SSTF

Which disk scheduling algorithm moves the head from one end of the disk to the other, servicing requests along the way?

• C-SCAN

• LOOK

• SSTF

• SCAN

Which disk scheduling algorithm moves the head from one end of the disk to the other, but only services requests in one direction?

• SCAN

• C-SCAN

• LOOK

• SSTF

Which disk scheduling algorithm scans the disk in one direction, then reverses direction and scans back in the opposite direction?

• FCFS

• C-SCAN

• LOOK

• SCAN

What is the main disadvantage of FCFS Disk Scheduling?

• High overhead for small requests

• Difficulty in implementing

• Lack of consideration for disk head movement

• Inefficient use of disk space

What is the main advantage of SSTF Disk Scheduling?

• Minimizes total seek time

• Maximizes total seek time

• Increases disk latency

• Reduces disk throughput

What is the main advantage of SCAN Disk Scheduling?

• Balanced disk access time

• Sequential disk access time

• Random disk access time

• Reduced disk access time

What is the main advantage of C-SCAN Disk Scheduling?

• Uniform wait time for all requests

• Reduced disk arm movement

• Improved disk throughput

• Faster disk access time