Operating System Questions And Answers - Computer Science MCQ - Page 3

(Showing: 21 - 30 out of 94 MCQs) Operating System is the main function-able part of our computer system. The operating system multiple choice questions and answers are discussed as below along with their explanations as necessary.
21. An assembler is used to translate a program written in
[A] A Low Language
[B] A high Language
[C] Middle Language
[D] Assembly Language
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22. Round robin scheduling is essentially the preemptive version of ________.
[A] FIFO
[B] Shortest job first
[C] Shortes remaining
[D] Longest time first
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23. Virtual memory is __________.
[A] An extremely large main memory
[B] An extremely large secondary memory
[C] An illusion of extremely large main memory
[D] A type of memory used in super computers.
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24. Which is not the state of the process ?
[A] Privileged
[B] Ready
[C] Running
[D] Blocked
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25. The number of processes completed per unit time is known as __________.
[A] output
[B] throughput
[C] Efficiency
[D] Capacity
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26. The mechanism that bring a page into memory only when it is needed is called _____________
[A] Sagmentation
[B] Fragmentation
[C] Demand Paging
[D] Page and Replacement
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27. PCB =
[A] Program Control Block
[B] Process Control Block
[C] Process Communication Block
[D] None
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28. FIFO scheduling is ________.
[A] Non Preemptive Scheduling
[B] Deadline Scheduling
[C] Preemptive Scheduling
[D] Fair share scheduling
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29. Which directory implementation is used in most Operating System?
[A] Single level directory structure
[B] Two level directory structure
[C] Tree directory structure
[D] Acyclic directory structure
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30. The Banker¿s algorithm is used
[A] to prevent deadlock in operating systems
[B] to detect deadlock in operating systems
[C] to rectify a deadlocked state
[D] None
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jafar hussain 2 months ago Reply

very informative and knowledge abale


Nagesh 5 months ago Reply

thanks for I to get very knowledge


amanuel bedelu 8 months ago Reply

resionable questions Thank you !!!!!!!!!!!!!!


Anil Kumar 11 months ago Reply

Very helpful for competitive exams


IZHAR WAJID 1 year ago Reply

really helpful for Educators nts preparation


Rupesh Dode 1 year ago Reply

very useful my technical example


Madhumita majumder 1 year ago Reply

Amazing..... it is very helpful to me


Pankaj Pawar 1 year ago Reply

Good one..But if you provide explaination to each answer, then it will be more advantageous.


vijay kumar 1 year ago Reply

6. In the blocked state ?
[A] the processes waiting for I/O are found
[B] the process which is running is found
[C] the processes waiting for the processor are found
[D] none of the above
Answer: A. the processes waiting for I/O are found
ans is incorrect
In some website ans C is OK

Anirudh Chauhan 11 months ago

in blocked state processes keep waiting either for resources or for I/O . So option A is correct.


Deb 1 year ago Reply

its really helpful for technical exam.thans .