PPSC Computer Science Topic 19 MCQ's Test Preparation

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MCQ's Test For PPSC Computer Science Topic 19 Operating System

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PPSC Computer Science Topic 19 Operating System

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Question # 1

Which scheduling policy is best suited for time sharing operating system.

Question # 2

Seek analysis is for.

Question # 3

Which operating system use write through catches.

Question # 4

What is the command that can print lines of first file matching with second file.

Question # 5

What is property of UNIX.

Question # 6

Problem of thrashing is affected significantly by

Question # 7

Which is non pre emptive

Question # 8

All the abbreviations is vi editor can be shown by

Question # 9

Shortest job First executes first the job.

Question # 10

Reference bit is used for

Question # 11

When did IBM released the first version of its disk operating system DOS version 1.0

Question # 12

Solaris is product of.

Question # 13

A publics key encryption system.

Question # 14

In which scheduling policies context switching never takes place

Question # 15

Distributed system should.

Question # 16

To avoid the race condition the number of process that may be simultaneously inside the critical section is

Question # 17

Which of the following does not interrupt an running process.

Question # 18

All device files are stored in which directory.

Question # 19

What is meaning of ILP32

Question # 20

Which command is LINUX is concerned with backup.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command gives the first byte where the difference is in the file 1 & file2
A. Diff
B. differ
C. Cmp
D. Compare
2 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
3 How applications communicates with kernel.
A. Not disclosed by linux team
B. SSL
C. System calls
D. Shell
4 A hardware device which is capable of executing a sequence of instructions, is known as.
A. CPU
B. ALU
C. CU
D. Processor
5 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
6 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
7 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
8 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
9 For multiprogramming operating system.
A. Special support from processor is essential
B. Special support from processor is not essential
C. Cache memory is essential
D. None of abvoe
10 Which scheduling policy is most suitable for time shared operating system.
A. Shortest job first
B. FCFS
C. LCFS
D. Round robin

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