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

Macintosh computer uses

Question # 2

Which of following is not an advantage of multiprogramming.

Question # 3

The system calls in UNIX is written using which language.

Question # 4

Which is signal user operating system.

Question # 5

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

Question # 6

Remote computing services involves the use of time sharing and

Question # 7

Belady anomaly occurs in.

Question # 8

To avoid the race condition the number of process that may be simultaneously inside the critical section is

Question # 9

Which operating system use write through catches.

Question # 10

Main function of shared memory is.

Question # 11

By which of following the problem of thrashing is significantly affected.

Question # 12

Shortest job First executes first the job.

Question # 13

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

Question # 14

What is the command that can print lines of first file matching with second file.

Question # 15

The part of machine level instruction which tells the central processor what has to be done is.

Question # 16

Which command is concerned with LINUX kernel log messages.

Question # 17

Banker's algorithm deals with

Question # 18

If two files on same partition point to the same inode structure they are called.

Question # 19

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

Question # 20

How applications communicates with kernel.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly
2 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker
3 In real time OS, which is most suitable scheduling scheme.
A. Round robin
B. FCFS
C. Pre-emptive scheduling
D. Random scheduling
4 File can have.
A. Read access
B. Write access
C. Copy access
D. All of above
5 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
6 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
7 What is the meaning of SVR 4
A. System five release 4
B. System version release 4
C. System five relocated 4
D. Storage files five release 4
8 Which command gives the first byte where the difference is in the file 1 & file2
A. Diff
B. differ
C. Cmp
D. Compare
9 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX
10 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al

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