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

Belady anomaly occurs in

Question # 2

What control character signals the end of the input file.

Question # 3

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

Question # 4

A publics key encryption system.

Question # 5

Which is signal user operating system.

Question # 6

Remote computing services involves the use of.

Question # 7

Which of following need a device driever.

Question # 8

Multiprogramming system

Question # 9

Shortest job First executes first the job.

Question # 10

File inode number can be viewed by.

Question # 11

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

Question # 12

Distributed system should.

Question # 13

Which among following is considered as super daemon.

Question # 14

In which scheduling policies context switching never takes place

Question # 15

What communication command provides communication to another user logged on by writing to the bottom of their terminal

Question # 16

The system calls in UNIX is written using which language.

Question # 17

Memory protection is normally done by

Question # 18

What are the global locks.

Question # 19

Which scheduling policy is most suitable for time shared operating system.

Question # 20

Default permissions of file can be changed with.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which type of software can be used to merge data of two files in one files.
A. System software
B. Networking software
C. Documenting software
D. utility software
2 Which command is used to determine the path of an executable file.
A. which
B. whom
C. locate
D. wex
3 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow
4 What control character signals the end of the input file.
A. Ctrl + s
B. Ctrl + z
C. Ctrl + w
D. Ctrl + d
5 By which command content of a file can be searched.
A. grep
B. search
C. srh
D. show
6 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
7 Which one is true.
A. The linkage editor is used to edit program which have to later link together.
B. The linkage editor links object module during compling
C. The linkage editor links objects modules and resolves external reference between them before loading.
D. None of above
8 Which command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty
9 Dirty bit is used ot show
A. Page with corrupted data
B. Wrong page in memory
C. Page that a modified after being loaded in the cache memory
D. Page that is less frequently accessed
10 Which command reads the content of another file in vi editor .
A. erd
B. ex
C. r
D. read

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