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

File inode number can be viewed by.

Question # 2

Printer in the file structure can be found in.

Question # 3

A series of statements explaining how the data is to be processed is called.

Question # 4

How applications communicates with kernel.

Question # 5

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

Question # 6

What is property of UNIX.

Question # 7

Which one shows the name of the operating system.

Question # 8

What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

Question # 9

Which of following is not an advantage of multiprogramming.

Question # 10

All device files are stored in which directory.

Question # 11

Which command is concerned with LINUX kernel log messages.

Question # 12

Daisy chain is a device for

Question # 13

What control character signals the end of the input file.

Question # 14

Which command is used to set terminal input output characteristics

Question # 15

A high paging rate

Question # 16

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

Question # 17

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

Question # 18

Which type of software can be used to merge data of two files in one files.

Question # 19

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

Question # 20

Disk scheduling includes decinding

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which LINUX command is used to update the modification time of a file.
A. UPDATE
B. MODIFY
C. TOUCH
D. UNTOCUH
2 Super visor state is only allowed to.
A. Utility softwares
B. Application sotware
C. Operating system
D. Guest user
3 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4
4 Which of the following does not interrupt an running process.
A. A device
B. Timer
C. Scheduler process
D. Power failure
5 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
6 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
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 In the shell , by default all variables are considered and stored as.
A. Integer
B. String
C. Float
D. Chracter
9 Main function of shared memory is.
A. To use primary memory efficiently
B. To do intra process communication
C. All of above
D. None
10 Which is not a valid file type in LINUX.
A. Socket
B. FIFO
C. Soft link
D. Inode

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