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 vi editor which command sets the number for all lines.

Question # 2

Which of the following does not interrupt an running process.

Question # 3

All device files are stored in which directory.

Question # 4

Memory protection is normally done by

Question # 5

Which is not a valid file type in LINUX.

Question # 6

The system calls in UNIX is written using which language.

Question # 7

Creating a job queue is a function of

Question # 8

Which command is used to set limits on file size.

Question # 9

Daisy chain is a device for

Question # 10

Remote computing services involves the use of.

Question # 11

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

Question # 12

Tee command is used in LINUX for.

Question # 13

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

Question # 14

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 15

Which is the most important for Multi taskiing.

Question # 16

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

Question # 17

Which command changes a files group owner

Question # 18

What control character signals the end of the input file.

Question # 19

Which among following is considered as super daemon.

Question # 20

Which is non pre emptive

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 What are the global locks.
A. They synchronize access to local resources.
B. They synchronize access to global resources
C. They synchronize access to local and global resources
D. None of above
2 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
3 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
4 Default permissions of file can be changed with.
A. Group
B. Chperm
C. chmod
D. Chall
5 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
6 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker
7 Which command is concerned with LINUX kernel log messages.
A. dmsg
B. dmesg
C. cmsg
D. cmesg
8 Which command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty
9 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
10 If two files on same partition point to the same inode structure they are called.
A. Soft links
B. Hard links
C. Copy links
D. similar links

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