Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Multiple Choice Questions
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
View Answer
A
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
View Answer
C
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
View Answer
A
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
View Answer
C
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
View Answer
B
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
View Answer
B
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
View Answer
B
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
View Answer
B