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

Main function of shared memory is.

Question # 2

Which operating system use write through catches.

Question # 3

All the abbreviations is vi editor can be shown by

Question # 4

Creating a job queue is a function of

Question # 5

How applications communicates with kernel.

Question # 6

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

Question # 7

Four necessary conditions for dead lock are none pre emption circular wait and

Question # 8

Which operating system reacts in the acutal time.

Question # 9

Which command is used to set limits on file size.

Question # 10

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 11

Semaphores are used to solve the problem of.

Question # 12

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

Question # 13

Re location bits used by relocating loader are a pacified by

Question # 14

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

Question # 15

The system calls in UNIX is written using which language.

Question # 16

Spooling most beneficial where

Question # 17

Which is the most important for Multi taskiing.

Question # 18

Which one is true.

Question # 19

Shortest job First executes first the job.

Question # 20

Solaris is product of.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Multiprogramming system
A. Are easier to develop than signal programming system.
B. Execute each job faster
C. Execute more jobs in the same time
D. Are used only on large main frame computers.
2 Dirty bit is used ot show
A. Page with corrupted data
B. Wrong page in memory
C. Page that a modified after being loaded in the cache memory
D. Page that is less frequently accessed
3 Creating a job queue is a function of
A. Spooler
B. Interpolator
C. Complier
D. Drive
4 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
5 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX
6 Poor response times are caused by
A. Busy processor
B. High I/O rate
C. High paging rates
D. any of above
7 What is the meaning of SVR 4
A. System five release 4
B. System version release 4
C. System five relocated 4
D. Storage files five release 4
8 Which one is true.
A. The linkage editor is used to edit program which have to later link together.
B. The linkage editor links object module during compling
C. The linkage editor links objects modules and resolves external reference between them before loading.
D. None of above
9 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
10 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter

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