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

What communication command provides communication to another user logged on by writing to the bottom of their terminal

Question # 2

Which command can be used to know the present working directory.

Question # 3

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.

Question # 4

Macintosh computer uses

Question # 5

Which command is used to determine the path of an executable file.

Question # 6

Which type of software can be used to merge data of two files in one files.

Question # 7

Which command is used to record a user login session in a file.

Question # 8

Which operating system use write through catches.

Question # 9

All the abbreviations is vi editor can be shown by

Question # 10

Which scheduling policy is best suited for time sharing operating system.

Question # 11

Which of following need a device driever.

Question # 12

Which of following is not an advantage of multiprogramming.

Question # 13

File can have.

Question # 14

Remote computing services involves the use of.

Question # 15

if the CPU scheduling policy is FCFS then what would be average waiting time.

Question # 16

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 17

Which command is used to set limits on file size.

Question # 18

Which operating system reacts in the acutal time.

Question # 19

Distributed systems should.

Question # 20

Main function of shared memory is.

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PPSC Class ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Belady anomaly occurs in.
A. LIFO
B. FIFO
C. LRU
D. NRU
2 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
3 What the name given to the values that are automatically provided by software to reduce keystrokes and improve a computer users productivity.
A. Defined values
B. Fixed values
C. Default values
D. None of the above
4 Which command reads the content of another file in vi editor .
A. erd
B. ex
C. r
D. read
5 which option of 'grep' displays the line number as well.
A. -n
B. -i
C. -d
D. -al
6 How applications communicates with kernel.
A. Not disclosed by linux team
B. SSL
C. System calls
D. Shell
7 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
8 How many links are created when we create a directory file.
A. 1
B. 2
C. 3
D. 4
9 Which of the following does not interrupt an running process.
A. A device
B. Timer
C. Scheduler process
D. Power failure
10 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

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