In C-SCAN (Circular SCAN) scheduling, how does the head move?
In C-SCAN (Circular SCAN) scheduling, how does the head move?
Answer: C. From one end of the disk to the other, then jumps to the beginning — The correct answer is Option 3: From one end of the disk to the other, then jumps to the beginning. In C-SCAN (Circular SCAN) scheduling, the disk head moves…
- A.
From the outer edge to the inner edge, then jumps to the outer edge
- B.
In a continuous circular loop
- C.
From one end of the disk to the other, then jumps to the beginning
- D.
In a zig-zag pattern
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Correct answer: C
The correct answer is Option 3: From one end of the disk to the other, then jumps to the beginning.
In C-SCAN (Circular SCAN) scheduling, the disk head moves from one end of the disk to the other, servicing requests along the way. However, once it reaches the end, it immediately returns to the beginning of the disk without servicing any requests on the return trip. This essentially treats the disk tracks as a circular list.