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

What is meaning of ILP32

Question # 2

How applications communicates with kernel.

Question # 3

What control character signals the end of the input file.

Question # 4

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

Question # 5

What communication command provides communication to another user logged on by writing to the bottom of their terminal

Question # 6

Which command is concerned with LINUX kernel log messages.

Question # 7

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

Question # 8

Which command is used to set terminal input output characteristics

Question # 9

Which is signal user operating system.

Question # 10

Which of following is not an advantage of multiprogramming.

Question # 11

What are the global locks.

Question # 12

Which command can be used to know the present working directory.

Question # 13

Which command is used to know the LINUX version.

Question # 14

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

Question # 15

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

Question # 16

Spooling most beneficial where

Question # 17

Remote computing services involves the use of time sharing and

Question # 18

Which among following is considered as super daemon.

Question # 19

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

Question # 20

Which command changes a files group owner

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Shortest job First executes first the job.
A. With the least processor needs
B. That first entered the queue
C. That has been in the queue for the longest
D. That last entered the queue
2 Which command is concerned with LINUX kernel log messages.
A. dmsg
B. dmesg
C. cmsg
D. cmesg
3 Which scheduling policy is most suitable for time shared operating system.
A. Shortest job first
B. FCFS
C. LCFS
D. Round robin
4 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
5 To avoid the race condition the number of process that may be simultaneously inside the critical section is
A. 1
B. 3
C. 0
D. 12
6 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.
7 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
8 Which type of software can be used to merge data of two files in one files.
A. System software
B. Networking software
C. Documenting software
D. utility software
9 Which command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty
10 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead

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