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 of following need a device driever.

Question # 2

Which of the following memory allocation scheme is subject to external fragmentation.

Question # 3

Semaphores are used to solve the problem of.

Question # 4

Which command is used to record a user login session in a file.

Question # 5

Creating a job queue is a function of

Question # 6

Which command is used to set terminal input output characteristics

Question # 7

Which among following is considered as super daemon.

Question # 8

Which command gives the first byte where the difference is in the file 1 & file2

Question # 9

Memory protection is normally done by

Question # 10

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

Question # 11

Distributed systems should.

Question # 12

Macintosh computer uses

Question # 13

Which command changes a files group owner

Question # 14

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

Question # 15

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

Question # 16

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.

Question # 17

Poor response times are caused by

Question # 18

if the CPU scheduling policy is FCFS then what would be average waiting time.

Question # 19

Dijkstra's algorithm deals with

Question # 20

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

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PPSC Class ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is concerned with LINUX kernel log messages.
A. dmsg
B. dmesg
C. cmsg
D. cmesg
2 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
3 Which scheduling policy is most suitable for time shared operating system.
A. Shortest job first
B. FCFS
C. LCFS
D. Round robin
4 Size of virtual memory depends on
A. Size of data bus
B. Size of address bus
C. Size of main memory
D. None of above
5 A publics key encryption system.
A. Allows only the correct sender to decode the data
B. Allows only the correct receiver to decode the data
C. Allows any one to decode the data
D. None of above
6 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
7 A series of statements explaining how the data is to be processed is called.
A. Instruction
B. Compiler
C. Program
D. Interpretor
8 Which is non pre emptive
A. Round robin
B. FIFO
C. MS
D. MSF
9 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
10 How applications communicates with kernel.
A. Not disclosed by linux team
B. SSL
C. System calls
D. Shell

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