CPU Scheduling Algorithms MCQ Quiz: FCFS, SJF and Round Robin
Evaluate your knowledge of CPU scheduling algorithms with this MCQ quiz. Covering FCFS, SJF, Round Robin and more, test your understanding of essential concepts in process scheduling.
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- 📋 Total Number of Questions: 30
- ⏳ Time Allotted: 30 Minutes
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1. In the First-Come, First-Served (FCFS) scheduling algorithm, which process gets executed first?
- The process with the shortest burst time
- The process with the highest priority
- The process that arrives first
- The process with the largest memory requirement
2. The Shortest Job First (SJF) algorithm selects processes based on:
- Arrival time
- Burst time
- Priority
- Waiting time
3. What is the main disadvantage of the FCFS scheduling algorithm?
- It may lead to starvation of short processes
- It leads to poor turnaround time for all processes
- It is complex to implement
- It does not consider priority
4. In the Round Robin (RR) scheduling algorithm, how is the CPU time allocated to each process?
- In a continuous manner, without time slices
- Based on priority
- In fixed time slices or quantum
- According to burst time
5. Which of the following is true about the Shortest Job First (SJF) algorithm?
- It always provides the shortest turnaround time
- It minimizes the waiting time for all processes
- It is non-preemptive in its simplest form
- It suffers from starvation for long processes
6. Which of the following is a characteristic of the Round Robin (RR) scheduling algorithm?
- It is preemptive
- It is non-preemptive
- It runs processes without time slices
- It uses priority to schedule processes
7. The FCFS algorithm is considered as:
- Preemptive
- Non-preemptive
- Shortest job first
- Priority-based
8. What is a major drawback of the Shortest Job First (SJF) algorithm?
- It results in high waiting time for small processes
- It can be difficult to implement in real-time systems
- It can cause process starvation
- It requires a large amount of CPU time to execute
9. In the Round Robin scheduling algorithm, if the time quantum is very large, it is equivalent to:
- First-Come, First-Served (FCFS)
- Shortest Job First (SJF)
- Priority scheduling
- Multiple-Queue scheduling
10. The primary advantage of the FCFS scheduling algorithm is:
- It minimizes the average waiting time
- It is easy to implement
- It eliminates process starvation
- It guarantees optimal throughput
11. What type of scheduling does the SJF algorithm use?
- Preemptive
- Non-preemptive
- Priority-based
- Multilevel Queue-based
12. Which of the following is a limitation of the Round Robin (RR) scheduling algorithm?
- It may cause high turnaround time
- It gives priority to short processes
- It does not handle I/O-bound processes well
- It requires high memory usage
13. The CPU burst time refers to:
- The time a process spends in memory
- The time a process waits in the queue
- The time a process spends executing on the CPU
- The time a process is blocked for I/O
14. Which algorithm suffers the most from the problem of starvation?
- First-Come, First-Served (FCFS)
- Shortest Job First (SJF)
- Round Robin (RR)
- Priority Scheduling
15. The waiting time of a process in the Round Robin algorithm is:
- Constant for all processes
- Dependent on the time quantum and process arrival
- Equal to the burst time of the process
- Zero for all processes
16. How can the problem of starvation in the SJF algorithm be addressed?
- By using a priority queue
- By implementing aging techniques
- By using Round Robin scheduling
- By giving priority to longer jobs
17. In the case of two processes with equal burst times, which scheduling algorithm executes them first?
- First-Come, First-Served (FCFS)
- Shortest Job First (SJF)
- Round Robin (RR)
- Priority Scheduling
18. What is the key advantage of the Round Robin (RR) algorithm compared to FCFS?
- It prevents starvation by ensuring all processes get a turn
- It reduces the CPU burst time for each process
- It minimizes the turnaround time
- It requires less memory
19. In the FCFS algorithm, how is the order of process execution determined?
- By the priority level of each process
- By the shortest burst time
- By the order of arrival of processes
- By the size of the process
20. What happens when the time quantum in a Round Robin system is set too low?
- It results in context switching overhead
- It increases CPU utilization
- It improves process completion time
- It decreases waiting time
21. What is the purpose of aging in scheduling algorithms?
- To increase the priority of processes that have waited too long
- To adjust the time quantum dynamically
- To reduce the CPU burst time of each process
- To allocate more CPU time to high-priority processes
22. What does a high waiting time in the FCFS algorithm usually result in?
- A low turnaround time
- A high throughput
- Poor performance for short jobs
- Faster process execution
23. Which of the following is a true statement about the Round Robin algorithm?
- It is optimal for CPU-bound processes
- It uses a fixed time quantum for each process
- It gives priority to I/O-bound processes
- It minimizes the average waiting time
24. The Turnaround Time in a scheduling algorithm is defined as:
- The time taken by a process to execute on the CPU
- The total time taken from the arrival to the completion of a process
- The waiting time before a process starts executing
- The time spent by a process in I/O operations
25. In the case of two processes with different arrival times and burst times, which algorithm would minimize the average waiting time?
- First-Come, First-Served (FCFS)
- Shortest Job First (SJF)
- Round Robin (RR)
- Priority Scheduling
26. In a system using Round Robin scheduling, what happens if there is no time quantum?
- The process will execute without any interruption
- The system will face high CPU utilization
- The scheduling will become equivalent to FCFS
- All processes will be suspended indefinitely
27. Which of the following scheduling algorithms is best suited for time-sharing systems?
- First-Come, First-Served (FCFS)
- Shortest Job First (SJF)
- Round Robin (RR)
- Priority Scheduling
28. Which CPU scheduling algorithm is used by UNIX and Linux operating systems?
- First-Come, First-Served (FCFS)
- Shortest Job First (SJF)
- Round Robin (RR)
- Multi-Level Feedback Queue
29. What is the primary disadvantage of using Shortest Job First (SJF) scheduling in a real-time system?
- High context-switching overhead
- Difficulty in predicting the burst time for each process
- Poor memory management
- It doesn't consider process priority
30. In which situation is the Round Robin (RR) scheduling algorithm least effective?
- When all processes have equal burst times
- When processes have very long burst times compared to the time quantum
- When processes have very short burst times
- When processes have I/O-bound operations