Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Multiple Choice Questions
Q411: In a multilevel queue scheduling system, processes in the foreground queue typically get what kind of priority?
- A: Lower priority
- B: Higher priority
- C: The same priority
- D: No priority assigned
View Answer
B
Q412: Which of the following factors heavily influences the performance of the Round Robin scheduling algorithm?
- A: Size of the ready queue
- B: Size of the time quantum
- C: Process priority
- D: Memory usage
View Answer
B
Q413: Round Robin scheduling is most suited for which type of system?
- A: Batch systems
- B: Time-sharing systems
- C: Embedded systems
- D: Real-time systems
View Answer
B
Q414: The main disadvantage of a small time quantum in Round Robin scheduling is:
- A: Higher response time
- B: Higher context switch overhead
- C: Larger waiting time
- D: forced preemption
View Answer
B
Q415: What is the optimal time quantum size for minimizing turnaround time in Round Robin scheduling?
- A: A very small time quantum
- B: A very large time quantum
- C: Equal to the average burst time
- D: At least as large as the average burst time
View Answer
C
Q416: The average waiting time in Round Robin scheduling is typically __________ compared to SJF scheduling.
- A: Higher
- B: Lower
- C: The same
- D: Unpredictable
View Answer
A
Q417: In Multilevel Queue Scheduling, which type of process usually gets the highest priority?
- A: Background processes
- B: Foreground processes
- C: Both processes have the same priority
- D: Depends on process burst time
View Answer
B
Q418: A context switch in the Round Robin algorithm occurs when:
- A: A process completes its time quantum
- B: The ready queue is empty
- C: A new process is added to the ready queue
- D: A process enters a critical section
View Answer
A
Q419: The turnaround time for a process in Round Robin scheduling is heavily influenced by:
- A: Process priority
- B: Time quantum size
- C: Context switch time
- D: CPU burst time
View Answer
B
Q420: In Figure 16.2, as the time quantum size decreases, what happens to the number of context switches?
- A: It decreases
- B: It stays constant
- C: It increases
- D: There is no impact
View Answer
C