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

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

Question # 2

Poor response times are caused by

Question # 3

Default permissions of file can be changed with.

Question # 4

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

Question # 5

Which of the following is always there in a computer.

Question # 6

Main function of shared memory is.

Question # 7

Which is not a valid file type in LINUX.

Question # 8

Dijkstra's algorithm deals with

Question # 9

Which operating system reacts in the acutal time.

Question # 10

In the shell , by default all variables are considered and stored as.

Question # 11

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

Question # 12

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

Question # 13

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 # 14

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

Question # 15

A high paging rate

Question # 16

Remote computing services involves the use of time sharing and

Question # 17

File inode number can be viewed by.

Question # 18

Fragmentation of a file system.

Question # 19

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

Question # 20

Which among following scheduling algorithms give minimum average waiting time.

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PPSC Class ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 A hardware device which is capable of executing a sequence of instructions, is known as.
A. CPU
B. ALU
C. CU
D. Processor
2 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
3 What is the command that can print lines of first file matching with second file.
A. Printline
B. cmp
C. com
D. comn
4 In vi editor which command sets the number for all lines.
A. Set nu
B. Set ni
C. Set sn
D. Set sl
5 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
6 Fragmentation of a file system.
A. Occurs only is file is not used properly
B. Can always the prevented
C. Happens in all file systems.
D. Can be removed by conmpaction
7 Disk scheduling includes decinding
A. Which should be accessed next
B. Order in which disk access requests must be serviced
C. The physical location of the file
D. the logical location of the file
8 Which is not a valid file type in LINUX.
A. Socket
B. FIFO
C. Soft link
D. Inode
9 Remote computing services involves the use of.
A. Multi processing
B. Multi programming
C. Batch processing
D. Real time processing
10 Which among following is considered as super daemon.
A. Sysinit
B. Grep
C. Init
D. Locate

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