Operating System Basics Questions and Answers
Operating System Basics questions with answers are among the most commonly asked in technical interviews and exams. This section covers core OS concepts like process management, memory allocation, file systems, and scheduling algorithms. Practicing programming questions and answers on operating systems helps strengthen your conceptual clarity and practical understanding of computer architecture. Frequently featured in GATE, TCS, Infosys, and Wipro placements, these MCQs provide a balanced mix of theoretical and applied knowledge. Clear explanations make this section an ideal resource for anyone preparing for system-related roles or competitive exams.
Operating System Basics
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563 questions
1. Round robin scheduling is essentially the preemptive version of ________.
- FIFO
- Shortest job first
- Shortes remaining
- Longest time first
2. Round robin scheduling is essentially the preemptive version of ________.
- FIFO
- Shortest job first
- Shortes remaining
- Longest time first
3. A page fault occurs
- when the page is not in the memory
- when the page is in the memory
- when the process enters the blocked state
- when the process is in the ready state
4. Which of the following will determine your choice of systems software for your computer ?
- Is the applications software you want to use compatible with it ?
- Is it expensive ?
- Is it compatible with your hardware ?
- Both 1 and 3
5. Let S and Q be two semaphores initialized to 1, where P0 and P1 processes the following statements wait(S);wait(Q); ---; signal(S);signal(Q) and wait(Q); wait(S);---;signal(Q);signal(S); respectively. The above situation depicts a _________ .
- Semaphore
- Deadlock
- Signal
- Interrupt
6. What is a shell ?
- It is a hardware component
- It is a command interpreter
- It is a part in compiler
- It is a tool in CPU scheduling
7. Routine is not loaded until it is called. All routines are kept on disk in a relocatable load format. The main program is loaded into memory & is executed. This type of loading is called _________
- Static loading
- Dynamic loading
- Dynamic linking
- Overlays
8. In the blocked state
- the processes waiting for I/O are found
- the process which is running is found
- the processes waiting for the processor are found
- none of the above
9. What is the memory from 1K - 640K called ?
- Extended Memory
- Normal Memory
- Low Memory
- Conventional Memory
10. Virtual memory is __________.
- An extremely large main memory
- An extremely large secondary memory
- An illusion of extremely large main memory
- A type of memory used in super computers