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

By which command content of a file can be searched.

Question # 2

All the abbreviations is vi editor can be shown by

Question # 3

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

Question # 4

Poor response times are caused by

Question # 5

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

Question # 6

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

Question # 7

Memory protection is normally done by

Question # 8

Which one shows the name of the operating system.

Question # 9

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

Question # 10

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 11

A high paging rate

Question # 12

Remote computing services involves the use of.

Question # 13

Belady anomaly occurs in

Question # 14

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

Question # 15

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 16

Default permissions of file can be changed with.

Question # 17

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

Question # 18

Four necessary conditions for dead lock are none pre emption circular wait and

Question # 19

Macintosh computer uses

Question # 20

What is the name of values that are automatically provided by software to reduce keystrokes.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which of the following is always there in a computer.
A. Batch system
B. Operating system
C. Time sharing system
D. Controlling system
2 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
3 Which command reads the content of another file in vi editor .
A. erd
B. ex
C. r
D. read
4 Which scheduling policy is most suitable for time shared operating system.
A. Shortest job first
B. FCFS
C. LCFS
D. Round robin
5 Super visor state is only allowed to.
A. Utility softwares
B. Application sotware
C. Operating system
D. Guest user
6 What is meaning of ILP32
A. 32 bit integrated Long & Pointer
B. 32 bit integer long & pointer
C. 32 bit integer Long & Point
D. 32 bit integer , Lost & pointer
7 Which is not a valid file type in LINUX.
A. Socket
B. FIFO
C. Soft link
D. Inode
8 if the CPU scheduling policy is FCFS then what would be average waiting time.
A. 10 ms
B. 10.8 ms
C. 12 ms
D. 12.8 ms
9 Which command is used to set limits on file size.
A. U limit
B. Alimit
C. dlimit
D. wilmit
10 File inode number can be viewed by.
A. -8
B. -1
C. -a
D. -t

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