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

To display disk consumption of a specific directory which command is used.

Question # 3

Main function of shared memory is.

Question # 4

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

Question # 5

Which of following is not an advantage of multiprogramming.

Question # 6

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

Question # 7

A thread is.

Question # 8

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.

Question # 9

A high paging rate

Question # 10

File inode number can be viewed by.

Question # 11

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

Question # 12

Multiprogramming system

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

Size of virtual memory depends on

Question # 15

Tee command is used in LINUX for.

Question # 16

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

Question # 17

By which command content of a file can be searched.

Question # 18

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

Question # 19

Creating a job queue is a function of

Question # 20

Which is non pre emptive

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 In real time OS, which is most suitable scheduling scheme.
A. Round robin
B. FCFS
C. Pre-emptive scheduling
D. Random scheduling
2 Which command reads the content of another file in vi editor .
A. erd
B. ex
C. r
D. read
3 Semaphores are used to solve the problem of.
A. Race condition
B. Process synchronization
C. Mutual exclusion
D. Belady problem
4 Creating a job queue is a function of
A. Spooler
B. Interpolator
C. Complier
D. Drive
5 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
6 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
7 Which among the following is used to write small program to control Linux Functionalities.
A. Shell commands
B. Shell script
C. C
D. Java
8 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
9 Belady anomaly occurs in
A. Optimal replacement
B. FIFO
C. LRU
D. Both in FIFO and LRU
10 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4

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