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
131. 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.
132. The kernel keeps track of the state of each task by using a data structure called __
- Process control block
- User control block
- Memory control block
- None of the above
133. A binary semaphore
- has the values one or zero
- is essential to binary computers
- is used only for synchronisation
- is used only for mutual exclusion
134. _________ page replacement alogorithm suffers from Belady's anamoly.
- LRU
- MRU
- FIFO
- LIFO
135. A program at the time of executing is called ________.
- Dynamic program
- Static program
- Binded Program p
- A Process
136. _________ is a high speed cache used to hold recently referenced page table entries a part of paged virtual memory
- Translation Lookaside buffer
- Inverse page table
- Segmented page table
- All the above
137. If you don¿t know which version of MS-DOS you are working with, which command will you use after booting your operating system ?
- Format command
- FAT command
- VER command
- DISK command
138. _______ OS pays more attention on the meeting of the time limits.
- Distributed
- Network
- Real time
- Online
139. A process said to be in ___________ state if it was waiting for an event that will never occur.
- Safe
- Unsafe
- Starvation
- Dead lock
140. The removal of process from active contention of CPU and reintroduce them into memory later is known as ____________.
- Interrupt
- Swapping
- Signal
- Thread