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

A high paging rate

Question # 2

Belady anomaly occurs in

Question # 3

In vi editor which command sets the number for all lines.

Question # 4

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

Question # 5

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

Question # 6

File inode number can be viewed by.

Question # 7

By which of following the problem of thrashing is significantly affected.

Question # 8

Default permissions of file can be changed with.

Question # 9

What is property of UNIX.

Question # 10

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

Question # 11

Which command is LINUX is concerned with backup.

Question # 12

Which is signal user operating system.

Question # 13

Tee command is used in LINUX for.

Question # 14

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

Question # 15

Macintosh computer uses

Question # 16

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

Question # 17

For multiprogramming operating system.

Question # 18

Re location bits used by relocating loader are a pacified by

Question # 19

Printer in the file structure can be found in.

Question # 20

Poor response times are caused by

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Sr.# Question Answer
1 Multiprogramming system
A. Are easier to develop than signal programming system.
B. Execute each job faster
C. Execute more jobs in the same time
D. Are used only on large main frame computers.
2 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
3 Tee command is used in LINUX for.
A.
Read from an input and write to a standard output and file.
B. Read from an input
C. Write to an output
D. None of above
4 What control character signals the end of the input file.
A. Ctrl + s
B. Ctrl + z
C. Ctrl + w
D. Ctrl + d
5 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
6 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4
7 Which among the following is used to write small program to control Linux Functionalities.
A. Shell commands
B. Shell script
C. C
D. Java
8 Fragmentation of a file system.
A. Occurs only is file is not used properly
B. Can always the prevented
C. Happens in all file systems.
D. Can be removed by conmpaction
9 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
10 For multiprogramming operating system.
A. Special support from processor is essential
B. Special support from processor is not essential
C. Cache memory is essential
D. None of abvoe

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