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

Problem of thrashing is affected significantly by

Question # 2

Multiprogramming system

Question # 3

Seek analysis is for.

Question # 4

Which of following is not an advantage of multiprogramming.

Question # 5

Main function of shared memory is.

Question # 6

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

Question # 7

Which command is used to set terminal input output characteristics

Question # 8

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 9

Which among following scheduling algorithms give minimum average waiting time.

Question # 10

File can have.

Question # 11

Printer in the file structure can be found in.

Question # 12

A hardware device which is capable of executing a sequence of instructions, is known as.

Question # 13

Which command is used to copy files.

Question # 14

Which command in vi editor command is used to copy the current line of the file.

Question # 15

All the abbreviations is vi editor can be shown by

Question # 16

Macintosh computer uses

Question # 17

Scissoring enables

Question # 18

What is property of UNIX.

Question # 19

Size of virtual memory depends on

Question # 20

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

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
2 if the CPU scheduling policy is FCFS then what would be average waiting time.
A. 10 ms
B. 10.8 ms
C. 12 ms
D. 12.8 ms
3 To avoid the race condition the number of process that may be simultaneously inside the critical section is
A. 1
B. 3
C. 0
D. 12
4 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
5 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
6 If two files on same partition point to the same inode structure they are called.
A. Soft links
B. Hard links
C. Copy links
D. similar links
7 By which of following the problem of thrashing is significantly affected.
A. Program size
B. Program structure
C. Primary storage
D. Secondary strorage
8 Spooling most beneficial where
A. Jobs are I/O bound
B. Jobs are CPU bound
C. Jobs are evenly divided as I/O bound are CPU bond
D. All of above
9 A hardware device which is capable of executing a sequence of instructions, is known as.
A. CPU
B. ALU
C. CU
D. Processor
10 Which command is used to set terminal input output characteristics
A. Atty
B. stty
C. dtty
D. itty

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