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

Belady anomaly occurs in.

Question # 2

Reference bit is used for

Question # 3

What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

Question # 4

Main function of shared memory is.

Question # 5

Which of following is not an advantage of multiprogramming.

Question # 6

Banker's algorithm deals with

Question # 7

Multiprogramming system

Question # 8

Which is not a valid file type in LINUX.

Question # 9

Which type of software can be used to merge data of two files in one files.

Question # 10

Which one shows the name of the operating system.

Question # 11

Memory protection is normally done by

Question # 12

What control character signals the end of the input file.

Question # 13

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

Question # 14

What is meaning of ILP32

Question # 15

Which among the following is used to write small program to control Linux Functionalities.

Question # 16

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

Question # 17

To avoid the race condition the number of process that may be simultaneously inside the critical section is

Question # 18

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

Question # 19

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

Question # 20

Which operating system use write through catches.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty
2 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
3 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
4 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
5 What is the name of values that are automatically provided by software to reduce keystrokes.
A. Data values
B. Default values
C. Defined values
D. Fixed vallues
6 Problem of thrashing is affected significantly by
A. Program structure
B. Program size
C. Primary storage size
D. All of above
7 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
8 File record length
A. Should be chosen to match the data characteristics
B. Should be fixed
C. Should be variable
D. Vary system to system
9 Which command is used to determine the path of an executable file.
A. which
B. whom
C. locate
D. wex
10 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead

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