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

What are the global locks.

Question # 2

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

Question # 3

Super visor state is only allowed to.

Question # 4

A publics key encryption system.

Question # 5

In which scheduling policies context switching never takes place

Question # 6

Which command is used to set limits on file size.

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Which is not a valid file type in LINUX.

Question # 11

Macintosh computer uses

Question # 12

For multiprogramming operating system.

Question # 13

Printer in the file structure can be found in.

Question # 14

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

Question # 15

Tee command is used in LINUX for.

Question # 16

Which command in LINUX is used for description any command.

Question # 17

Spooling most beneficial where

Question # 18

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

Question # 19

Fragmentation of a file system.

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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
2 Which command is used to record a user login session in a file.
A. script
B. Record
C. Copy
D. Session
3 Which command is LINUX is concerned with backup.
A. tar
B. zip
C. cpio
D. untar
4 Poor response times are caused by
A. Busy processor
B. High I/O rate
C. High paging rates
D. any of above
5 Which command can be used to know the present working directory.
A. pad
B. pww
C. pwd
D. pdd
6 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
7 To display disk consumption of a specific directory which command is used.
A. dd
B. du
C. dt
D. di
8 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
9 Which command is used to extract a column from a text file.
A. get
B. tar
C. untar
D. cut
10 Reference bit is used for
A. Implementing LRU page replacement algorithm
B. Implementing NRU algorithm
C. To check the page table entry in the cache memory
D. None of above

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