Multithreading and CPU Scheduling MCQs

What is a thread?

• A program in execution

• The smallest unit of CPU utilization within a process

• An independent program

• A type of process

Which of the following is NOT a benefit of multithreading?

• Improved responsiveness

• Increased CPU utilization

• Increased memory usage by duplicating resources

• Better resource sharing within a process

User-level threads are managed by:

• The operating system kernel

• The hardware

• A user-level thread library

• The CPU scheduler

In multithreading, threads within the same process share:

• CPU registers

• Program counter

• Memory and resources

• Stack

Which CPU scheduling algorithm assigns the CPU to the process that arrives first?

• Round Robin

• First-Come, First-Served (FCFS)

• Shortest Job First (SJF)

• Priority Scheduling

Which of the following scheduling algorithms is preemptive?

• First-Come, First-Served (FCFS)

• Shortest Job Next (SJN)

• Round Robin (RR)

• None of the above

The main disadvantage of Round Robin scheduling is:

• Starvation of low priority processes

• Long waiting time for short processes

• Overhead caused by too frequent context switching

• Requires knowing the process burst time

Which scheduling algorithm can cause starvation of low priority processes?

• Round Robin

• Priority Scheduling

• First-Come, First-Served

• Multilevel Queue Scheduling

In a multilevel feedback queue, a process can:

• Move between queues based on behavior

• Only stay in one queue forever

• Execute only in the highest priority queue

• Not be preempted

Which scheduling algorithm minimizes average waiting time if process lengths are known in advance?

• Round Robin

• Priority Scheduling

• Shortest Job First (SJF)

• First-Come, First-Served (FCFS)