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

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

Question # 2

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

Question # 3

Printer in the file structure can be found in.

Question # 4

Spooling most beneficial where

Question # 5

Which scheduling policy is most suitable for time shared operating system.

Question # 6

File record length

Question # 7

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

Question # 8

A high paging rate

Question # 9

Tee command is used in LINUX for.

Question # 10

Which of the following does not interrupt an running process.

Question # 11

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

Question # 12

Multiprogramming system

Question # 13

Re location bits used by relocating loader are a pacified by

Question # 14

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 15

Which command is used to set terminal input output characteristics

Question # 16

What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.

Question # 17

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

Question # 18

By which command content of a file can be searched.

Question # 19

Which command changes a files group owner

Question # 20

Which command is used to copy files.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command is used to copy files.
A. cp
B. copy
C. mv
D. move
2 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
3 A high paging rate
A. May cause a high I/O rate
B. Keeps the system running well
C. Is a symptom of too much processor activity
D. Always creates a slow system.
4 Belady anomaly occurs in.
A. LIFO
B. FIFO
C. LRU
D. NRU
5 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
6 In which of the following usually a front end processor is used.
A. Virtual storage
B. Time sharing
C. Multi programming
D. Multi heading
7 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
8 Macintosh computer uses
A. System 7.0
B. AU/X
C. Xenix
D. None
9 The part of machine level instruction which tells the central processor what has to be done is.
A. Operation code
B. Address
C. Locator
D. Flip flop
10 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX

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