Which of the following is/are the common services provided by an operating system?
All of the options
Why "All of the options" is Correct Since File System manipulation, Error detection, and Program execution are all well-established and common services provided by operating systems, the option that includes all of them is the correct choice. Therefore, the correct answer is that all of the options are common services provided by an operating system.
Match List I with List II:
| List I | List II | ||
| (A) | Least frequently used | (I) | Memory is distributed among processors |
| (B) | Critical Section | (II) | Page replacement policy in cache memory |
| (C) | Loosely coupled multiprocessor system | (III) | Program section that once begin must complete execution before another processor access the same shared resource |
| (D) | Distributed operating system organization | (IV) | O/S routines are distributed among available processors. |
Choose the correct answer from the options given below:
A counting semaphore is initialized to 8. 3 wait() operations and 4 signal() operations are applied. Find the current value of semaphore variable.
At a particular time of computation, the value of a counting semaphore is 7. Then 20 P(wait) operations and 15 V(signal) operations are completed on this semaphore. What is the resulting value of the semaphore?
Which of the following interprocess communication model is used to exchange messages among co-operative processes?