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

Distributed system should.

Question # 2

Which operating system use write through catches.

Question # 3

What are the global locks.

Question # 4

Which scheduling policy is most suitable for time shared operating system.

Question # 5

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

Question # 6

What control character signals the end of the input file.

Question # 7

Which command is concerned with LINUX kernel log messages.

Question # 8

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

Question # 9

Reference bit is used for

Question # 10

Which one shows the name of the operating system.

Question # 11

File record length

Question # 12

Spooling most beneficial where

Question # 13

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

Question # 14

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

Question # 15

Printer in the file structure can be found in.

Question # 16

For multiprogramming operating system.

Question # 17

What is property of UNIX.

Question # 18

The system calls in UNIX is written using which language.

Question # 19

Memory protection is normally done by

Question # 20

The part of machine level instruction which tells the central processor what has to be done is.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which technique is used by operating systems to execute several program concurrently by switching back and forth.
A. Partitioning
B. Multitasking
C. Windowing
D. Paging
2 Four necessary conditions for dead lock are none pre emption circular wait and
A. Mutual exclusion
B. Race condition
C. Buffer overflow
D. None of above
3 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
4 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
5 In real time OS, which is most suitable scheduling scheme.
A. Round robin
B. FCFS
C. Pre-emptive scheduling
D. Random scheduling
6 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
7 Seek analysis is for.
A. Paging issues
B. Device busy problems
C. Control unit busy problems
D. All of above
8 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
9 What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.
A. Defined values
B. Fixed values
C. Default values
D. None of the above
10 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing

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