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

In real time OS, which is most suitable scheduling scheme.

Question # 2

Which operating system use write through catches.

Question # 3

Dirty bit is used ot show

Question # 4

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 5

What is property of UNIX.

Question # 6

Which among following scheduling algorithms give minimum average waiting time.

Question # 7

In which scheduling policies context switching never takes place

Question # 8

Which is signal user operating system.

Question # 9

Which of the following memory allocation scheme is subject to external fragmentation.

Question # 10

To display disk consumption of a specific directory which command is used.

Question # 11

Daisy chain is a device for

Question # 12

Tee command is used in LINUX for.

Question # 13

Semaphores are used to solve the problem of.

Question # 14

Which is the most important for Multi taskiing.

Question # 15

Which command is used to determine the path of an executable file.

Question # 16

Which command changes a files group owner

Question # 17

Creating a job queue is a function of

Question # 18

Re location bits used by relocating loader are a pacified by

Question # 19

Problem of thrashing is affected significantly by

Question # 20

What is the meaning of SVR 4

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
2 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
3 Which command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty
4 Which of following need a device driever.
A. Cache
B. Disk
C. Main memory
D. Registers
5 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow
6 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
7 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
8 Which command reads the content of another file in vi editor .
A. erd
B. ex
C. r
D. read
9 Spooling most beneficial where
A. Jobs are I/O bound
B. Jobs are CPU bound
C. Jobs are evenly divided as I/O bound are CPU bond
D. All of above
10 Four necessary conditions for dead lock are none pre emption circular wait and
A. Mutual exclusion
B. Race condition
C. Buffer overflow
D. None of above

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