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

00:00
Question # 1

How many links are created when we create a directory file.

Question # 2

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

Question # 3

Which command is used to set limits on file size.

Question # 4

File record length

Question # 5

Which of the following is always there in a computer.

Question # 6

Default permissions of file can be changed with.

Question # 7

Which operating system use write through catches.

Question # 8

Which command is used to know the LINUX version.

Question # 9

Which among the following is used to write small program to control Linux Functionalities.

Question # 10

A thread is.

Question # 11

Which one shows the name of the operating system.

Question # 12

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

Question # 13

Belady anomaly occurs in.

Question # 14

Fragmentation of a file system.

Question # 15

Creating a job queue is a function of

Question # 16

Which command is LINUX is concerned with backup.

Question # 17

Semaphores are used to solve the problem of.

Question # 18

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

Question # 19

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

Question # 20

Which of following is not an advantage of multiprogramming.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Default permissions of file can be changed with.
A. Group
B. Chperm
C. chmod
D. Chall
2 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
3 Solaris is product of.
A. IBP
B. IBM
C. Microsoft
D. Sun microsystmes
4 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
5 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
6 What are the global locks.
A. They synchronize access to local resources.
B. They synchronize access to global resources
C. They synchronize access to local and global resources
D. None of above
7 Which command is LINUX is concerned with backup.
A. tar
B. zip
C. cpio
D. untar
8 A thread is.
A. Lightweight process where the context switching is low
B. Lightweight process where the context switching is high
C. Used to speed up paging
D. Used in dead locks
9 Which is not a valid file type in LINUX.
A. Socket
B. FIFO
C. Soft link
D. Inode
10 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead

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