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

How applications communicates with kernel.

Question # 2

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

Question # 3

Which is not a valid file type in LINUX.

Question # 4

Which is signal user operating system.

Question # 5

which option of 'grep' displays the line number as well.

Question # 6

Which command is concerned with LINUX kernel log messages.

Question # 7

By which command content of a file can be searched.

Question # 8

Which technique is used by operating systems to execute several program concurrently by switching back and forth.

Question # 9

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

Question # 10

Which operating system reacts in the acutal time.

Question # 11

Which is non pre emptive

Question # 12

Which one shows the name of the operating system.

Question # 13

Macintosh computer uses

Question # 14

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

Question # 15

Which command is used to set terminal input output characteristics

Question # 16

Belady anomaly occurs in

Question # 17

Which of following need a device driever.

Question # 18

Tee command is used in LINUX for.

Question # 19

Poor response times are caused by

Question # 20

Main function of shared memory is.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which is not a valid file type in LINUX.
A. Socket
B. FIFO
C. Soft link
D. Inode
2 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
3 For multiprogramming operating system.
A. Special support from processor is essential
B. Special support from processor is not essential
C. Cache memory is essential
D. None of abvoe
4 Which of the following is always there in a computer.
A. Batch system
B. Operating system
C. Time sharing system
D. Controlling system
5 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
6 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
7 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
8 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
9 How applications communicates with kernel.
A. Not disclosed by linux team
B. SSL
C. System calls
D. Shell
10 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead

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