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

Dijkstra's algorithm deals with

Question # 2

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

Question # 3

Spooling most beneficial where

Question # 4

Which command is used to determine the path of an executable file.

Question # 5

File can have.

Question # 6

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

Question # 7

Which one shows the name of the operating system.

Question # 8

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

Question # 9

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

Question # 10

If two files on same partition point to the same inode structure they are called.

Question # 11

Which among following scheduling algorithms give minimum average waiting time.

Question # 12

In vi editor which command sets the number for all lines.

Question # 13

In which scheduling policies context switching never takes place

Question # 14

File record length

Question # 15

Which LINUX command is used to update the modification time of a file.

Question # 16

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

Question # 17

Fragmentation of a file system.

Question # 18

Which command is used to set terminal input output characteristics

Question # 19

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

Question # 20

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

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Sr.# Question Answer
1 Disk scheduling includes decinding
A. Which should be accessed next
B. Order in which disk access requests must be serviced
C. The physical location of the file
D. the logical location of the file
2 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
3 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
4 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
5 What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition.
A. One
B. Two
C. Three
D. Four
6 Which command is LINUX is concerned with backup.
A. tar
B. zip
C. cpio
D. untar
7 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
8 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
9 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
10 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.
A. Buffer cache
B. Spooling
C. Pooling
D. Virtual memory

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