Operating System Concepts

What is the purpose of an interrupt in an operating system?

• To schedule tasks for execution

• To suspend the execution of a process

• To signal the occurrence of an event needing immediate attention

• To manage memory allocation

Which of the following is an example of a system call?

• Open a file

• Run a program

• Terminate a process

• All of the above

In which of the following scenarios does a process enter a “waiting” state?

• The process is waiting for user input.

• The process is running and utilizing the CPU.

• The process is terminated.

• The process is executing in the kernel mode.

What does the term “context switching” refer to in an operating system?

• Changing from one process to another

• Changing from one user to another

• Switching between input and output devices

• Switching from kernel mode to user mode

What is the function of the "scheduler" in an operating system?

• Managing memory

• Managing input/output devices

• Assigning CPU time to processes

• Handling process creation and termination

Which of the following is a characteristic of a distributed operating system?

• It only runs on a single computer system.

• It manages a collection of independent computers to appear as a single coherent system.

• It uses only centralized control for resource management.

• It does not support networking features.

Which of the following is the primary purpose of a "bootstrap loader"?

• To load the operating system into memory during startup

• To allocate memory to the operating system

• To provide a user interface

• To handle network communication

Which of the following is a method of process synchronization?

• Multithreading

• Semaphores

• Context switching

• Virtual memory

Which of the following techniques is used by an operating system to ensure that multiple processes can safely access shared resources?

• Deadlock detection

• Paging

• Synchronization mechanisms

• Process scheduling

A Process Control Block(PCB) does not contain which of the following?

• Code

• Stack

• Bootstrap program

• Data