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

What control character signals the end of the input file.

Question # 2

When did IBM released the first version of its disk operating system DOS version 1.0

Question # 3

A series of statements explaining how the data is to be processed is called.

Question # 4

How applications communicates with kernel.

Question # 5

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

Question # 6

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

Question # 7

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 8

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

Question # 9

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

Question # 10

Which of following is not an advantage of multiprogramming.

Question # 11

Dijkstra's algorithm deals with

Question # 12

Belady anomaly occurs in.

Question # 13

What are the global locks.

Question # 14

Macintosh computer uses

Question # 15

Remote computing services involves the use of.

Question # 16

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

Question # 17

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

Question # 18

The system calls in UNIX is written using which language.

Question # 19

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

Question # 20

Which of the following does not interrupt an running process.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
2 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
3 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
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 The part of machine level instruction which tells the central processor what has to be done is.
A. Operation code
B. Address
C. Locator
D. Flip flop
6 Seek analysis is for.
A. Paging issues
B. Device busy problems
C. Control unit busy problems
D. All of above
7 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead
8 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
9 if the CPU scheduling policy is FCFS then what would be average waiting time.
A. 10 ms
B. 10.8 ms
C. 12 ms
D. 12.8 ms
10 All the abbreviations is vi editor can be shown by
A. All
B. ab
C. atat
D. ashow

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