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

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

Question # 2

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

Question # 3

Which command is used to extract a column from a text file.

Question # 4

Printer in the file structure can be found in.

Question # 5

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

Question # 6

All device files are stored in which directory.

Question # 7

Seek analysis is for.

Question # 8

By which command content of a file can be searched.

Question # 9

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 10

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 # 11

Shortest job First executes first the job.

Question # 12

Belady anomaly occurs in

Question # 13

Which LINUX command is used to update the modification time of a file.

Question # 14

In which of the following usually a front end processor is used.

Question # 15

Which is non pre emptive

Question # 16

Which command is concerned with LINUX kernel log messages.

Question # 17

Fragmentation of a file system.

Question # 18

Which command is used to determine the path of an executable file.

Question # 19

What control character signals the end of the input file.

Question # 20

Default permissions of file can be changed with.

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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 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
3 Dirty bit is used ot show
A. Page with corrupted data
B. Wrong page in memory
C. Page that a modified after being loaded in the cache memory
D. Page that is less frequently accessed
4 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
5 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
6 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
7 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
8 Which command is concerned with LINUX kernel log messages.
A. dmsg
B. dmesg
C. cmsg
D. cmesg
9 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
10 Disk scheduling includes decinding
A. Which should be accessed next
B. Order in which disk access requests must be serviced
C. The physical location of the file
D. the logical location of the file

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