Operating System Questions And Answers - Computer Science MCQ - Page 2


Computer Science : Operating System (Page 2)

(Showing: 11 - 20 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.
11.  What is Page stealing ?
[A] It takes page frames from other working sets
[B] To increase the capacity of main memory
[C] To speed up main memory read operation
[D] None of above
12. What is convoy effect ?
[A] All process waiting for the long process to complete
[B] All process waiting for the small process to complete
[C] Process in not present in main memory
[D] None of above
13. Aging is a technique ?
[A] Used to increase the priority of processed that are waiting for long times
[B] Used to decrease the priority that are waiting for long time
[C] Used to increase the priority of processed that are currently running
[D] Used to decrease the priority processes that are currently running
14. Which of the following algorithm suffers from the Belady's anomly ?
[C] Optimal Algorithm
[D] None of above
15. Concurrent process are ?
[A] Processes that do not overlap in time
[B] Process that overlap in time
[C] Processes that are executed by the processor at the same time
[D] None of above
16. Which of the following disk scheduling strategies is likely to give the best throughput ?
[A] Farthest cylinder next
[B] Nearest Cylinder next
[D] Elevator algorithm

Size of the virtual memory depends upon ?

[A] Data Bus
[B] Address Bus
[C] Size of main memory
[D] Memory buffer register
18. Race around condition occurs when ?
[A] Two processed unknowingly wait for resources that are help by each other
[B] Two process wait for same resources
[C] All resources are shared
[D] Two processes share the same shared resource
19. The part of machine level instruction, which tells the central processor what has to be done, is
[A] Operation code
[B] address
[C] Locator
[D] Flip flop
20. Correcting errors in a program is referred to as
[A] Debugging
[B] bugging
[C] Rectifying
[D] modifying

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Asry Asry 1 week ago Reply


abubakr 1 month ago Reply

really good

IZHAR WAJID 1 month ago Reply

really helpful for Educators nts preparation

Samiullah Khan 1 month ago Reply

Nice good

Rupesh Dode 1 month ago Reply

very useful my technical example

Madhumita majumder 2 months ago Reply

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

Pankaj Pawar 7 months ago Reply

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

sahil jadhav 7 months ago Reply

give question of 2003 answer

vijay kumar 10 months 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

Deb 11 months ago Reply

its really helpful for technical exam.thans .

usman 1 year ago Reply

70th is D: data inconsistency, not redundancy. redundancy is unusual repetition of data.

mir mudasir 1 year ago Reply

useful questions for exams

mir mudasir 1 year ago Reply

useful questions for exams

mir mudasir 1 year ago Reply

useful questions for exams

JAMAL 1 year ago Reply

Q 69 answer is wrong at correct answer is option C

sathish 1 year ago Reply

94 th Question answer MULTIPLEXING.. not multiprogramming...

rekha 1 year ago Reply

94th question's answer should be multiprogramming

sathish 1 year ago

That answer is Multiplexing

ibrahim bere 1 year ago Reply

Great effort,i like it.

Butterfly 1 year ago Reply

how can i download them?

Shrikant Irgond 2 years ago Reply

really helpful to me.