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

00:00
Question # 1

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

Question # 2

Which command can be used to know the present working directory.

Question # 3

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

Question # 4

How many links are created when we create a directory file.

Question # 5

For multiprogramming operating system.

Question # 6

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

Question # 7

Four necessary conditions for dead lock are none pre emption circular wait and

Question # 8

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

Question # 9

The part of machine level instruction which tells the central processor what has to be done is.

Question # 10

which option of 'grep' displays the line number as well.

Question # 11

Which command is LINUX is concerned with backup.

Question # 12

Which command in vi editor command is used to copy the current line of the file.

Question # 13

Which command is concerned with LINUX kernel log messages.

Question # 14

Which is not a valid file type in LINUX.

Question # 15

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

Question # 16

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

Question # 17

Which command is used to copy files.

Question # 18

What are the global locks.

Question # 19

All device files are stored in which directory.

Question # 20

Multiprogramming system

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
2 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
3 Which command gives the first byte where the difference is in the file 1 & file2
A. Diff
B. differ
C. Cmp
D. Compare
4 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
5 Memory protection is normally done by
A. The processor and the associated hardware
B. The operating system
C. The compiler
D. The user program
6 In which scheduling policies context switching never takes place
A. FCFS
B. Round robin
C. Shortest job first
D. Pre empitive
7 What is the meaning of SVR 4
A. System five release 4
B. System version release 4
C. System five relocated 4
D. Storage files five release 4
8 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
9 Which of following need a device driever.
A. Cache
B. Disk
C. Main memory
D. Registers
10 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker

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