Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Multiple Choice Questions
Q851: Which of the following is true about MFT with a single input queue?
- A: There is a single queue for all partitions
- B: Multiple queues exist for each partition
- C: No input queue is used
- D: Processes are not queued
View Answer
A
Q852: Swapping involves transferring processes between memory and __________.
- A: A backing store
- B: Temporary storage
- C: Shared memory
- D: Kernel space
View Answer
A
Q853: What does MFT use to allocate memory to processes?
- A: First-fit, best-fit, and worst-fit algorithms
- B: Fixed-size partitions only
- C: Flexible partitioning
- D: Priority-based scheduling algorithms
View Answer
A
Q854: What is a disadvantage of MFT with multiple queues?
- A: Wasted memory space due to empty partitions
- B: Processes cannot be swapped out
- C: The input queue becomes too large
- D: Multiple queues lead to fragmentation
View Answer
A
Q855: Which of the following is true about internal fragmentation in MFT?
- A: It occurs when there is wasted space within a partition
- B: A partition becomes too large
- C: The partition boundaries change dynamically
- D: Processes cannot be moved between partitions
View Answer
A
Q856: The roll-out, roll-in swapping technique is used in which of the following scheduling algorithms?
- A: Priority-based scheduling
- B: Round-robin scheduling
- C: First-come-first-served scheduling
- D: Fair-share scheduling
View Answer
A
Q857: Swapping is constrained by which of the following in a multiprogramming environment?
- A: Quantum and pending I/O
- B: Acknowledgment time for swap requests
- C: Quantum only
- D: Swap in/out speed
View Answer
B
Q858: Contiguous memory allocation is characterized by __________.
- A: Each process being contained in a single block of memory
- B: Memory being divided into fixed partitions
- C: Processes being stored in separate segments
- D: Multiple processes sharing the same memory block
View Answer
A
Q859: In the MVT scheme, the size of the partitions can _______.
- A: be fixed
- B: change with time
- C: remain constant
- D: be predetermined
View Answer
B
Q860: Which of the following is a characteristic of the MVT scheme?
- A: Single partition
- B: forced job size
- C: internal fragmentation
- D: dynamic address translation
View Answer
D