Operating System Concepts Quiz

A process in an operating system can be in one of several states. Which of the following is NOT a valid process state?

• New

• Running

• Blocked

• Waitlisted

Which of the following best describes a process in the "Ready" state?

• The process is waiting for I/O to complete.

• The process is executing on the CPU.

• The process is waiting for CPU time to be scheduled.

• The process has finished execution.

Which scheduling algorithm assigns the CPU to the process that has been waiting the longest?

• Shortest Job First (SJF)

• Round Robin (RR)

• First-Come, First-Served (FCFS)

• Priority Scheduling

In Round Robin (RR) scheduling, the time quantum should be:

• Very large compared to the burst time of processes

• Very small to minimize waiting time

• Large enough to prevent context switching overhead but small enough to maintain responsiveness

• Equal to the longest burst time of all processes

What is a “fork” system call used for in process management?

• To terminate a process

• To create a new process

• To allocate memory to a process

• To wait for a process to complete execution

Which of the following system calls is used to replace the memory space of a process with a new program?

• fork()

• exec()

• wait()

• exit()

In inter-process communication (IPC), a mechanism to send a signal from one process to another is called:

• Message passing

• Signaling

• Piping

• Shared memory

Which of the following is NOT an example of IPC?

• Sockets

• Pipes

• Threads

• Message queues

In multithreading, what is the main advantage of having multiple threads within a process?

• Each thread can execute a different program.

• Threads share the same data space, enabling faster communication.

• Threads run independently with different resources.

• Threads run on separate CPUs only.

Which of the following is true about threads?

• Threads cannot be created dynamically.

• Threads have separate stacks but share the same heap.

• Threads cannot run concurrently.

• Threads do not share memory.