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

Belady anomaly occurs in

Question # 2

Which among following scheduling algorithms give minimum average waiting time.

Question # 3

File inode number can be viewed by.

Question # 4

Remote computing services involves the use of time sharing and

Question # 5

Memory protection is normally done by

Question # 6

Problem of thrashing is affected significantly by

Question # 7

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

Question # 8

Which operating system reacts in the acutal time.

Question # 9

Disk scheduling includes decinding

Question # 10

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

Question # 11

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

Question # 12

Which of following need a device driever.

Question # 13

Distributed systems should.

Question # 14

Dirty bit is used ot show

Question # 15

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

Question # 16

Dynamic allocation of storage areas with VSAM files is accomplished by

Question # 17

Which technique is used by operating systems to execute several program concurrently by switching back and forth.

Question # 18

Re location bits used by relocating loader are a pacified by

Question # 19

Seek analysis is for.

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 Poor response times are caused by
A. Busy processor
B. High I/O rate
C. High paging rates
D. any of above
2 Which one shows the name of the operating system.
A. U name -n
B. Uname -I
C. U name - m
D. U name -o
3 The part of machine level instruction which tells the central processor what has to be done is.
A. Operation code
B. Address
C. Locator
D. Flip flop
4 Which of the following memory allocation scheme is subject to external fragmentation.
A. Segmentation
B. Swapping
C. Demand paging
D. Multiple contiguous fixed partitions
5 Which command is used to determine the path of an executable file.
A. which
B. whom
C. locate
D. wex
6 Dijkstra's algorithm deals with
A. Mutual exclusion
B. Dead lock avoidance
C. Dead lock recovery
D. Real time processing
7 Which is signal user operating system.
A. MS-DOS
B. UNIX
C. XENIX
D. LINUX
8 Which among following is considered as super daemon.
A. Sysinit
B. Grep
C. Init
D. Locate
9 Reference bit is used for
A. Implementing LRU page replacement algorithm
B. Implementing NRU algorithm
C. To check the page table entry in the cache memory
D. None of above
10 Distributed system should.
A. High security
B. Have better resource sharing
C. Better system utilization
D. Low system overhead

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