Understanding CPU Scheduling Algorithms

What is the main principle behind First-Come, First-Served scheduling?

• Processes are executed based on priority levels.

• Processes are executed in the order they arrive.

• Processes are executed in reverse order of arrival.

• Processes are executed randomly without any order.

How does Shortest Job Next scheduling determine which process to execute next?

• It prioritizes processes based on their arrival time.

• It selects the process with the smallest estimated run time.

• It randomly selects any process from the queue.

• It selects the process with the longest estimated run time.

What are the advantages of Round Robin Scheduling?

• Increased CPU usage

• Advantages of Round Robin Scheduling include fairness, improved response time, and simplicity in implementation.

• Complex implementation

• Longer wait times

In Priority Scheduling, how are priorities assigned to processes?

• Priorities are assigned randomly without any criteria.

• All processes have the same priority regardless of their needs.

• Priorities are assigned based on factors like importance, resource requirements, or expected execution time.

• Priorities are determined solely by the process creation time.

What is a potential drawback of using First-Come, First-Served scheduling?

• Simplified implementation for complex systems.

• Equal waiting time for all processes.

• Convoy effect leading to increased waiting time for shorter processes.

• Increased efficiency for all processes.

How does Shortest Job Next scheduling affect average waiting time?

• Shortest Job Next scheduling increases average waiting time.

• Shortest Job Next scheduling has no effect on average waiting time.

• Shortest Job Next scheduling reduces average waiting time.

• Shortest Job Next scheduling only applies to long jobs.

What is the time quantum in Round Robin Scheduling?

• The time quantum is a fixed time slice allocated to each process.

• The time quantum is the maximum time a process can wait.

• The time quantum is the total time a process can run.

• The time quantum varies for each process based on priority.

What happens if two processes have the same priority in Priority Scheduling?

• The scheduler randomly selects one of the processes to execute.

• Both processes are executed simultaneously without any order.

• The scheduler uses a secondary criterion to decide which process to execute.

• The process with the higher memory usage is executed first.

Can Round Robin Scheduling lead to starvation? Why or why not?

• No, Round Robin Scheduling cannot lead to starvation.

• Yes, it can lead to starvation if processes have high priority.

• Round Robin Scheduling can cause starvation due to time slice allocation.

• Starvation occurs in Round Robin when processes are not given enough CPU time.

What is the difference between preemptive and non-preemptive Priority Scheduling?

• Preemptive does not allow interruption; non-preemptive does.

• Preemptive allows interruption; non-preemptive does not.

• Both allow interruption but differ in priority levels.

• Non-preemptive allows tasks to be paused; preemptive does not.