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Operating Systems Interview Questions

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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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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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
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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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Latest 20 Questions
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal
"Holiday Packages" announced as an advertisement are an example of _________: (a) Offer (b) Counter Offer (c) Invitation to Offer (d) None of the above
A match fixing contract between a player and a broker is a: (a) Valid Contract (b) Unenforceable Contract (c) Void Contract (d) Illegal Contract
When a bookseller sells a book on cash payment then it is called as ___________: (a) Unilateral Contract (b) Bilateral Contract (c) Executed Contract (d) Executory Contract
____________ agreements are created by situation: (a) Written (b) Oral (c) Void (d) Implied
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