MCQ Subject: Operating Systems

What is the primary overhead associated with context switching in Operating Systems?

A semaphore S is initialized to 1. Three processes sequentially execute down(S). What happens to the third process?

What is the primary function of a semaphore in Operating System synchronization?

The primary function of a semaphore in Operating Systems is to:

In Operating Systems, which architecture separates kernel services into user-space servers for better modularity and security?

Which of the following synchronization primitives, introduced by Edsger Dijkstra, uses a counter to manage access to a shared resource by multiple processes?

Which scheduling algorithm prioritizes jobs based on their execution time, scheduling the shortest job first to minimize average waiting time in the system?

In Operating Systems, what triggers the transition of a process from the ‘Waiting’ state to the ‘Running’ state?

Which OS concept is primarily responsible for efficiently switching between multiple active processes by saving and restoring CPU state?

Which scheduling algorithm prioritizes processes based solely on their period, assigning the highest priority to the process with the shortest period?