Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Chapter: 45
Q1241:
Which disk scheduling method minimizes rotational latency by servicing requests in the order of their proximity to the current head position?
A. SSTF
B. C-SCAN
C. FCFS
D. SCAN
Correct Answer:
A
Chapter: 45
Q1242:
The disk bandwidth is calculated by dividing the total number of bytes transferred by ________.
A. Disk size
B. Disk rotation speed
C. The time from first request to last transfer
D. The number of I/O requests
Correct Answer:
C
Chapter: 45
Q1243:
The worst-case number of I/O operations for inserting a block after the 50th block using the linked list approach would be ________.
A. 100+1+100+2
B. 50+1+2
C. 103+2
D. 200+1+100
Correct Answer:
A
Chapter: 45
Q1244:
What is the primary function of the I/O system in secondary storage management?
A. To optimize disk scheduling
B. To manage file allocation
C. To control the transfer of data
D. To provide free space management
Correct Answer:
C
Chapter: 45
Q1245:
In a multi-level index scheme, the first level index points to ________.
A. Data blocks
B. Another index block
C. File metadata
D. Free space
Correct Answer:
B
Chapter: 45
Q1246:
The structure of a disk in modern computer systems can be considered as a ________.
A. Linear array of tracks
B. One-dimensional array of logical blocks
C. Set of directories
D. List of free blocks
Correct Answer:
B
Chapter: 45
Q1247:
Which of the following is a characteristic of the Scan disk scheduling algorithm?
A. It services requests in the order they are received
B. It moves in one direction over the disk and then reverses
C. It optimizes seek time
D. It minimizes disk usage
Correct Answer:
B
Chapter: 45
Q1248:
The three layers of file OS kernel used for managing files, file operations, and file storage to disk are: File Management System, I/O System, and ________.
A. Disk Scheduling
B. Secondary Storage Management System
C. File Allocation Table
D. Disk Mapping
Correct Answer:
B