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

Reference bit is used for

Question # 2

Which command is LINUX is concerned with backup.

Question # 3

Which among following is considered as super daemon.

Question # 4

Dirty bit is used ot show

Question # 5

Belady anomaly occurs in

Question # 6

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

Question # 7

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

Question # 8

File inode number can be viewed by.

Question # 9

Which of following need a device driever.

Question # 10

Remote computing services involves the use of time sharing and

Question # 11

What is meaning of ILP32

Question # 12

Size of virtual memory depends on

Question # 13

In vi editor which command sets the number for all lines.

Question # 14

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

Question # 15

Distributed system should.

Question # 16

A publics key encryption system.

Question # 17

Belady anomaly occurs in.

Question # 18

Which is non pre emptive

Question # 19

Poor response times are caused by

Question # 20

Printer in the file structure can be found in.

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PPSC ComputerScience Chapter 19 Important MCQ's

Sr.# Question Answer
1 Which is the most important for Multi taskiing.
A. Modularity
B. Time sharing
C. Multi programming
D. Multi user
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 Which command gives the first byte where the difference is in the file 1 & file2
A. Diff
B. differ
C. Cmp
D. Compare
4 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
5 Dynamic allocation of storage areas with VSAM files is accomplished by
A. Hashing
B. Control splits
C. Over flow areas
D. Relative recording
6 Which command in vi editor command is used to copy the current line of the file.
A. ys
B. yy
C. yc
D. yw
7 Super visor state is only allowed to.
A. Utility softwares
B. Application sotware
C. Operating system
D. Guest user
8 Which command in LINUX is used for description any command.
A. Help
B. Man
C. Detail
D. Short detail
9 Which technique is used by operating systems to execute several program concurrently by switching back and forth.
A. Partitioning
B. Multitasking
C. Windowing
D. Paging
10 Distributed systems should.
A. Meet time constraints
B. Aim better resource sharing
C. Aim better system utilization
D. Aim low system overhead

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