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

Disk scheduling includes decinding

Question # 2

Which command is used to record a user login session in a file.

Question # 3

Which command is concerned with LINUX kernel log messages.

Question # 4

Which is non pre emptive

Question # 5

Size of virtual memory depends on

Question # 6

Daisy chain is a device for

Question # 7

For multiprogramming operating system.

Question # 8

Which command is used to extract a column from a text file.

Question # 9

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

Question # 10

Dijkstra's algorithm deals with

Question # 11

A high paging rate

Question # 12

Which command changes a files group owner

Question # 13

A series of statements explaining how the data is to be processed is called.

Question # 14

Distributed systems should.

Question # 15

Which command is used to set limits on file size.

Question # 16

if the CPU scheduling policy is FCFS then what would be average waiting time.

Question # 17

Which operating system use write through catches.

Question # 18

Which of following need a device driever.

Question # 19

Belady anomaly occurs in

Question # 20

Which one shows the name of the operating system.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
2 Which command changes a files group owner
A. chmod
B. chgrp
C. chown
D. chgrep
3 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4
4 In which scheduling policies context switching never takes place
A. FCFS
B. Round robin
C. Shortest job first
D. Pre empitive
5 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
6 Belady anomaly occurs in
A. Optimal replacement
B. FIFO
C. LRU
D. Both in FIFO and LRU
7 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
8 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
9 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker
10 Remote computing services involves the use of.
A. Multi processing
B. Multi programming
C. Batch processing
D. Real time processing

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