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

All the abbreviations is vi editor can be shown by

Question # 2

Main function of shared memory is.

Question # 3

Macintosh computer uses

Question # 4

Belady anomaly occurs in

Question # 5

Which is signal user operating system.

Question # 6

Distributed systems should.

Question # 7

What control character signals the end of the input file.

Question # 8

Which command gives the first byte where the difference is in the file 1 & file2

Question # 9

What is the name of values that are automatically provided by software to reduce keystrokes.

Question # 10

Spooling most beneficial where

Question # 11

A publics key encryption system.

Question # 12

Remote computing services involves the use of time sharing and

Question # 13

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

Question # 14

Disk scheduling includes decinding

Question # 15

Re location bits used by relocating loader are a pacified by

Question # 16

In which scheduling policies context switching never takes place

Question # 17

Printer in the file structure can be found in.

Question # 18

By which command content of a file can be searched.

Question # 19

File can have.

Question # 20

A high paging rate

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which command can be used to know the present working directory.
A. pad
B. pww
C. pwd
D. pdd
2 Multiprogramming system
A. Are easier to develop than signal programming system.
B. Execute each job faster
C. Execute more jobs in the same time
D. Are used only on large main frame computers.
3 Banker's algorithm deals with
A. Dead lock prevention
B. Dead lock avoidance
C. Dead look recovery
D. Mutual exclusion
4 Which scheduling policy is best suited for time sharing operating system.
A. Shortest job first
B. Round robin
C. First come first serve
D. Elevator
5 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.
6 What control character signals the end of the input file.
A. Ctrl + s
B. Ctrl + z
C. Ctrl + w
D. Ctrl + d
7 Which operating system use write through catches.
A. UNIX
B. XENIX
C. ULTRIX
D. DOS
8 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead
9 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
10 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

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