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

Which of the following memory allocation scheme is subject to external fragmentation.

Question # 2

File record length

Question # 3

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

Question # 4

Which one is true.

Question # 5

Semaphores are used to solve the problem of.

Question # 6

Macintosh computer uses

Question # 7

Which operating system use write through catches.

Question # 8

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

Question # 9

Which scheduling policy is best suited for time sharing operating system.

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

Fragmentation of a file system.

Question # 15

Which command reads the content of another file in vi editor .

Question # 16

Seek analysis is for.

Question # 17

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

Question # 18

Belady anomaly occurs in

Question # 19

Solaris is product of.

Question # 20

In real time OS, which is most suitable scheduling scheme.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
2 In real time OS, which is most suitable scheduling scheme.
A. Round robin
B. FCFS
C. Pre-emptive scheduling
D. Random scheduling
3 Belady anomaly occurs in
A. Optimal replacement
B. FIFO
C. LRU
D. Both in FIFO and LRU
4 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
5 Default permissions of file can be changed with.
A. Group
B. Chperm
C. chmod
D. Chall
6 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
7 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
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 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
10 Which process is known for initializing a microcomputer with its OS.
A. Cold booting
B. Boot recording
C. Booting
D. Warm booting

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