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

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

Question # 4

What control character signals the end of the input file.

Question # 5

Which one is true.

Question # 6

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

Question # 7

Which is signal user operating system.

Question # 8

Problem of thrashing is affected significantly by

Question # 9

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

Question # 10

Which among following scheduling algorithms give minimum average waiting time.

Question # 11

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 12

In which scheduling policies context switching never takes place

Question # 13

Poor response times are caused by

Question # 14

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

Question # 15

The system calls in UNIX is written using which language.

Question # 16

Macintosh computer uses

Question # 17

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

Question # 18

File inode number can be viewed by.

Question # 19

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

Question # 20

How applications communicates with kernel.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which of following is not an advantage of multiprogramming.
A. Increased through out
B. Shorter response time
C. Ability to assign priories of jobs
D. Decreased system overload
2 Which command is used to determine the path of an executable file.
A. which
B. whom
C. locate
D. wex
3 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
4 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
5 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
6 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
7 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
8 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
9 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
10 Which command in vi editor command is used to copy the current line of the file.
A. ys
B. yy
C. yc
D. yw

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