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 is used to determine the path of an executable file.

Question # 2

Dijkstra's algorithm deals with

Question # 3

Which command is used to set limits on file size.

Question # 4

Four necessary conditions for dead lock are none pre emption circular wait and

Question # 5

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

Question # 6

Belady anomaly occurs in

Question # 7

All device files are stored in which directory.

Question # 8

Which operating system reacts in the acutal time.

Question # 9

Daisy chain is a device for

Question # 10

By which command content of a file can be searched.

Question # 11

The part of machine level instruction which tells the central processor what has to be done is.

Question # 12

Which among following is considered as super daemon.

Question # 13

Which command changes a files group owner

Question # 14

By which of following the problem of thrashing is significantly affected.

Question # 15

Spooling most beneficial where

Question # 16

Seek analysis is for.

Question # 17

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

Question # 18

Macintosh computer uses

Question # 19

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

Question # 20

A series of statements explaining how the data is to be processed is called.

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Sr.# Question Answer
1 Which command in vi editor command is used to copy the current line of the file.
A. ys
B. yy
C. yc
D. yw
2 Re location bits used by relocating loader are a pacified by
A. Relocating loader
B. Assembler
C. Translator
D. Linker
3 Solaris is product of.
A. IBP
B. IBM
C. Microsoft
D. Sun microsystmes
4 Dirty bit is used ot show
A. Page with corrupted data
B. Wrong page in memory
C. Page that a modified after being loaded in the cache memory
D. Page that is less frequently accessed
5 Which of following is not an advantage of multiprogramming.
A. Increased through out
B. Shorter response time
C. Ability to assign priories of jobs
D. Decreased system overload
6 What is property of UNIX.
A. Multi user
B. Multi processes
C. Multi tasking
D. All of above
7 What is meaning of ILP32
A. 32 bit integrated Long & Pointer
B. 32 bit integer long & pointer
C. 32 bit integer Long & Point
D. 32 bit integer , Lost & pointer
8 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
9 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
10 The system calls in UNIX is written using which language.
A. Java
B. C
C. C++
D. Assembly

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