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Operating Systems Interview Questions & Answers

Below we have listed all the Operating Systems Interview Questions and answers. Feel free to comment on any Operating Systems Interview Questions or answer by the comment feature available on the page.

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Operating Systems Interview Questions & Answers

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. The operating system is a component of the system software in a computer system. Application programs usually require an operating system to function. All major computer platforms (hardware and software) require and sometimes include an operating system. Linux, Windows, VMS, OS/400, AIX, and z/OS are all examples of operating systems.

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Windows Operating System Interview Questions & Answers (121)

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Question
Rating
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What happens, when Interrupt occurs? choose the right answer from the following..
a) CPU completes the current instruction, save the context and then jumps to new instruction.
b) CPU save the context of incomplete instruction and jump to new instruction.
c) CPU jumps to new instruction only if it has higher priority than current one.
d) CPU completes all the instructions in current process before jumping to instruction of another
process.
3.2 Rating
View Answer
When Blue Screen Error will occur in computer?
2.9 Rating
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Which of the following OS is a Multitasking operatin system?
-Win xp
-win 2000
-win NT
-MS DOS
4.9 Rating
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What is an operating system?
3.2 Rating
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Explain about communication features in UNIX?
3.0 Rating
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What is a Real-Time System?
4.3 Rating
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What is a Safe State and what is its use in deadlock avoidance?
2.9 Rating
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What is cache memory?
3.7 Rating
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What is Context Switch?
4.7 Rating
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What is CPU Scheduler?
4.6 Rating
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What is Dispatcher?
3.3 Rating
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What is DRAM? In which form does it store data?
4.5 Rating
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What is fragmentation? Different types of fragmentation?
4.1 Rating
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What is the cause of thrashing? How does the system detect thrashing?
4.5 Rating
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What is the difference between Hard and Soft real-time systems?
3.1 Rating
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What is the important aspect of a real-time system or Mission Critical Systems?
4.0 Rating
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What is Throughput, Turnaround time, waiting time and Response time?
3.2 Rating
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What is virtual memory?
3.8 Rating
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What resources are used when a thread created? How do they differ from those when a process is created?
4.8 Rating
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Why paging is used?
4.1 Rating
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