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 is always there in a computer.

Question # 2

Which is the most important for Multi taskiing.

Question # 3

Which command in LINUX is used for description any command.

Question # 4

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

Question # 5

A thread is.

Question # 6

Scissoring enables

Question # 7

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

Question # 8

How applications communicates with kernel.

Question # 9

Which command is used to set limits on file size.

Question # 10

Which operating system reacts in the acutal time.

Question # 11

Memory protection is normally done by

Question # 12

Disk scheduling includes decinding

Question # 13

Which is signal user operating system.

Question # 14

Which command is LINUX is concerned with backup.

Question # 15

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

Question # 16

Problem of thrashing is affected significantly by

Question # 17

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

Question # 18

Default permissions of file can be changed with.

Question # 19

Remote computing services involves the use of.

Question # 20

Which command is used to set terminal input output characteristics

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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 When did IBM released the first version of its disk operating system DOS version 1.0
A. 1981
B. 1982
C. 1983
D. 1984
3 Which is non pre emptive
A. Round robin
B. FIFO
C. MS
D. MSF
4 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
5 Which operating system reacts in the acutal time.
A. Batch system
B. Quick response system
C. Real time system
D. Time sharing system
6 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
7 If two files on same partition point to the same inode structure they are called.
A. Soft links
B. Hard links
C. Copy links
D. similar links
8 A high paging rate
A. May cause a high I/O rate
B. Keeps the system running well
C. Is a symptom of too much processor activity
D. Always creates a slow system.
9 Tee command is used in LINUX for.
A.
Read from an input and write to a standard output and file.
B. Read from an input
C. Write to an output
D. None of above
10 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions

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