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
22. Round robin scheduling is essentially the preemptive version of ________.
[B] Shortest job first
[C] Shortes remaining
[D] Longest time first
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.
24. Which is not the state of the process ?
[A] Privileged
[B] Ready
[C] Running
[D] Blocked
25. The number of processes completed per unit time is known as __________.
[A] output
[B] throughput
[C] Efficiency
[D] Capacity
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
27. PCB =
[A] Program Control Block
[B] Process Control Block
[C] Process Communication Block
[D] None
28. FIFO scheduling is ________.
[A] Non Preemptive Scheduling
[B] Deadline Scheduling
[C] Preemptive Scheduling
[D] Fair share scheduling
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
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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Nisha Ramalingam 2 years ago Reply

An operating system is

Sana Kanwal 2 years ago Reply

Great platform for learner's

Nagesh 4 years ago Reply

thanks for I to get very knowledge

amanuel bedelu 4 years ago Reply

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

Anil Kumar 4 years ago Reply

Very helpful for competitive exams

IZHAR WAJID 4 years ago Reply

really helpful for Educators nts preparation

Rupesh Dode 4 years ago Reply

very useful my technical example

Madhumita majumder 4 years ago Reply

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

Pankaj Pawar 5 years ago Reply

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

vijay kumar 5 years 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 4 years ago

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