Operating System MCQs with Answers
Practice important Operating System MCQs with answers and explanations.
Multiple Choice Questions
Q421: Multilevel Queue Scheduling ensures that:
- A: All processes are treated equally
- B: Processes are classified based on priority and type
- C: Background processes are never executed
- D: Foreground processes can be preempted
View Answer
B
Q422: Fill in the blank: In the Round Robin scheduling algorithm, when a process finishes its time quantum, it is moved to the _______ of the ready queue.
- A: end
- B: start
- C: middle
- D: same position
View Answer
A
Q423: What does Multilevel Feedback Queue Scheduling aim to prevent?
- A: Starvation
- B: Process deadlock
- C: CPU overload
- D: Process starvation in all processes
View Answer
A
Q424: In UNIX System V scheduling, the priority of processes in the Kernel Group remains __________.
- A: Dynamic
- B: Fixed
- C: Variable
- D: Recalculated every second
View Answer
B
Q425: Which of the following is a feature of the UNIX System V scheduling algorithm?
- A: Round Robin within each queue
- B: Priorities are not updated
- C: FIFO within all queues
- D: No CPU-bound penalty
View Answer
A
Q426: The decay function in UNIX System V scheduling helps to __________.
- A: Increase priority for CPU-bound processes
- B: Decrease priority for I/O-bound processes
- C: Penalize CPU-bound processes
- D: Prevent process starvation
View Answer
B
Q427: Multilevel Feedback Queue Scheduling is defined by which of the following parameters?
- A: Number of queues, scheduling algorithm for each queue, and method of process promotion
- B: Number of CPUs, priority scheduling, and aging process
- C: Scheduling type and queue priority
- D: None of the above
View Answer
A
Q428: UNIX System V scheduling algorithm operates with a quantum of __________.
- A: 2 seconds
- B: 1 second
- C: 5 seconds
- D: Variable based on process type
View Answer
B
Q429: What is the main advantage of using deterministic modeling in scheduling algorithm evaluation?
- A: It provides exact numbers for comparison
- B: It uses real-time data to predict performance
- C: It allows predictions for future workload behavior
- D: It simulates multiple real-world workloads
View Answer
A
Q430: Which of the following scheduling algorithms uses First-Come-First Serve (FCFS) in case of a tie?
- A: UNIX System V scheduling algorithm
- B: Multilevel Feedback Queue scheduling
- C: Shortest Job First (SJF)
- D: Round Robin (RR)
View Answer
A