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 among following is considered as super daemon.

Question # 2

The system calls in UNIX is written using which language.

Question # 3

Default permissions of file can be changed with.

Question # 4

Memory protection is normally done by

Question # 5

Belady anomaly occurs in.

Question # 6

Which one shows the name of the operating system.

Question # 7

In which of the following usually a front end processor is used.

Question # 8

If two files on same partition point to the same inode structure they are called.

Question # 9

Problem of thrashing is affected significantly by

Question # 10

What is the name of values that are automatically provided by software to reduce keystrokes.

Question # 11

In the shell , by default all variables are considered and stored as.

Question # 12

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 13

What control character signals the end of the input file.

Question # 14

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 15

Which command in LINUX is used for description any command.

Question # 16

What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition.

Question # 17

Which command is used to know the LINUX version.

Question # 18

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

Question # 19

Main function of shared memory is.

Question # 20

Which process is known for initializing a microcomputer with its OS.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 What is meaning of ILP32
A. 32 bit integrated Long & Pointer
B. 32 bit integer long & pointer
C. 32 bit integer Long & Point
D. 32 bit integer , Lost & pointer
2 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
3 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX
4 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
5 Which command is used to record a user login session in a file.
A. script
B. Record
C. Copy
D. Session
6 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
7 Kernel minimizes the frequency of disk access by keeping a pool of internal data buffer which helps to increase the response time this is known as.
A. Buffer cache
B. Spooling
C. Pooling
D. Virtual memory
8 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
9 Which command can be used to know the present working directory.
A. pad
B. pww
C. pwd
D. pdd
10 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4

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