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

Daisy chain is a device for

Question # 2

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

Question # 3

What is meaning of ILP32

Question # 4

Scissoring enables

Question # 5

Which command is used to know the LINUX version.

Question # 6

In which scheduling policies context switching never takes place

Question # 7

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

Question # 8

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 9

Which command is used to copy files.

Question # 10

Which is the most important for Multi taskiing.

Question # 11

In vi editor which command sets the number for all lines.

Question # 12

Semaphores are used to solve the problem of.

Question # 13

All device files are stored in which directory.

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

Dirty bit is used ot show

Question # 18

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

Question # 19

Solaris is product of.

Question # 20

Super visor state is only allowed to.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 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.
A. Buffer cache
B. Spooling
C. Pooling
D. Virtual memory
2 Which one is true.
A. The linkage editor is used to edit program which have to later link together.
B. The linkage editor links object module during compling
C. The linkage editor links objects modules and resolves external reference between them before loading.
D. None of above
3 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
4 Which command is used to record a user login session in a file.
A. script
B. Record
C. Copy
D. Session
5 Which command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty
6 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead
7 Remote computing services involves the use of time sharing and
A. Multiprocessing
B. Interactive processing
C. Batch processing
D. Real time processing
8 What is the name of values that are automatically provided by software to reduce keystrokes.
A. Data values
B. Default values
C. Defined values
D. Fixed vallues
9 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
10 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn

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