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

Question # 2

Shortest job First executes first the job.

Question # 3

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

Question # 4

Which command is used to set terminal input output characteristics

Question # 5

Tee command is used in LINUX for.

Question # 6

Disk scheduling includes decinding

Question # 7

Which command is used to copy files.

Question # 8

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

Question # 9

Belady anomaly occurs in.

Question # 10

Which among following scheduling algorithms give minimum average waiting time.

Question # 11

Which command is concerned with LINUX kernel log messages.

Question # 12

In which scheduling policies context switching never takes place

Question # 13

Which command gives the first byte where the difference is in the file 1 & file2

Question # 14

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

Question # 15

How applications communicates with kernel.

Question # 16

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 17

Belady anomaly occurs in

Question # 18

A high paging rate

Question # 19

Which LINUX command is used to update the modification time of a file.

Question # 20

File record length

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
2 To avoid the race condition the number of process that may be simultaneously inside the critical section is
A. 1
B. 3
C. 0
D. 12
3 Which command changes a files group owner
A. chmod
B. chgrp
C. chown
D. chgrep
4 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t
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 Which technique is used by operating systems to execute several program concurrently by switching back and forth.
A. Partitioning
B. Multitasking
C. Windowing
D. Paging
7 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker
8 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting
9 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
10 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

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