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Welcome to the Operating System MCQs Page

Dive deep into the fascinating world of Operating System with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Operating System, a crucial aspect of GATE CSE Exam. In this section, you will encounter a diverse range of MCQs that cover various aspects of Operating System, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within GATE CSE Exam.

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Check out the MCQs below to embark on an enriching journey through Operating System. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of GATE CSE Exam.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Operating System. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Operating System MCQs | Page 16 of 16

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Q151.
Consider a small two-way set-associative cache memory, consisting of four blocks. For choosing the block to be replaced, use the least recently used (LRU) scheme. The number of cache misses for the following sequence of block addresses is 8, 12, 0, 12, 8

a.

2

b.

3

c.

4

d.

5

Discuss
Answer: (b).3
Q152.
Suppose that we have an ordered file with one million records, stored on a disk. The block size is 2048b, records are of fixed size and are unspanned. The record length is 256b., then what is the number of blocks required for the data file.

a.

12

b.

14

c.

15

d.

17

Discuss
Answer: (d).17
Q153.
Let the ordering key field of the file is 10 bytes long and a block pointer is 6 bytes long and a primary index has been constructed for the file. Then to search a record using index how many block access are required??

a.

8

b.

9

c.

10

d.

11

Discuss
Answer: (c).10
Q154.
Memory, also called random access memory, or RAM

a.

Contains the electronic circuits that cause processing to occur

b.

Makes the information resulting from processing available for use

c.

Allows data, programs, commands, and user responses to be entered into a computer

d.

Consists of electronic components that store data

Discuss
Answer: (b).Consists of electronic components that store data
Q155.
CPU scheduling takes place when

a.

Process switches from running to waiting state

b.

Process switches from running state to ready state

c.

Process switches from waiting state to ready state

d.

All of these

Discuss
Answer: (b).Process switches from running state to ready state
Q156.
In the following process state transition diagram for a uniprocessor system, assume that there are always some processes in the ready state.

Now consider the following statements:
I. If a process makes a transition D, it would result in another process making transition A immediately.
II. A process P2 in blocked state can make transition E while another process P1 is in running state.
III. The OS uses preemptive scheduling.
IV. The OS uses non-preemptive scheduling.

Which of the above statements are TRUE?

a.

I and II

b.

I and III

c.

II and III

d.

II and IV

Discuss
Answer: (c).II and III
Page 16 of 16

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