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PPSC Computer Science Full Book test MCQs With Answers
Question # 1
The terminal device that functions as a cash register computer terminal and OCR reader is the
Choose an answer
Data collection terminal
OCR register terminal
Video Display terminal
POS terminal
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Question # 2
Which of the following is not true for a magnetic disk.
Choose an answer
It is expensive relative to magnetic tape
It provides only sequential access to stored data
Users can easily update records by writing over the old data
All of above
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Question # 3
A term associated with the companion of processing speeds of different computer system is.
Choose an answer
EFTS
MPG
CFPS
MIPS
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Question # 4
The method which uses array of dots for generating a character is called.
Choose an answer
Stoke method
Bitmap method
Star dust method
None
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Question # 5
A data communication facility on which data can be transmitted in two direction is referred as.
Choose an answer
Duplex
Simplex
Triplex
None
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Question # 6
Select the interface which provides fast, connected forward only access to data.
Choose an answer
Idata record
I data base
I data base
Idata Reader
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Question # 7
The primary advantage of key to tape data entry system is.
Choose an answer
A large percentage of editing can be performed at the time of data entry
Key verification is easily performed
The tape is reusable
Keying errors can be detected as they occur
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Question # 8
What it is called to present information in a particular order based on numeric or alphabetical value.
Choose an answer
Sorting
Searching
Arranging
cropping
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Question # 9
Which of the following are valid float values.
Choose an answer
4.5678
4.0
7 e4
All of above
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Question # 10
What are the three decisions making operations performed by the ALU of the computer.
Choose an answer
Grater then
Less than
Eual to
All of the above
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Question # 11
Which of the following is a LOOP statement of a C language.
Choose an answer
Repeat until
For
While -Do
Do-while
Both b and d above
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Question # 12
Which programmable timer is used to generate timing signal
Choose an answer
8255
8254
8251
8259
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Question # 13
Sending a file from your personal computer's primary memory or disk to another computer is called.
Choose an answer
Uploading
Down loading
Logging on
Hang on
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Question # 14
To drag a selected range of data to another worksheet in the same workbook use the.
Choose an answer
Tab key
Alt key
Shift key
Ctrl key
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Question # 15
Which statement is false about WR signal
Choose an answer
WR signal controls the input buffer
the bar over Wr means that this is an active low signal
the bar over WR means that this is an active high signal
If WR is 0 then the input data reaches the latch input.
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Question # 16
Pentium pro processor contains
Choose an answer
L1 Cache
L2 cache
Both a and b
None
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Question # 17
The subtractive color model use the concept of.
Choose an answer
Printing ink
Light to display color
Printing line
None
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Question # 18
A factor in the selection of a source language is.
Choose an answer
Programmer skill
Language availability
Program compatibility with other software
All of above
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Question # 19
Software engineering is the systematic approach to the
Choose an answer
Development of software
Operation of software
Maintenance of softeare
All of the above
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Question # 20
A hybrid compouter
Choose an answer
Resembles digital computer
Resembles analog computer
Resembles both a digital and analog computer
None of the above
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Question # 21
Which cohesion determines the elements are all executed in the same time.
Choose an answer
Functional cohesion
Sequential cohesion
Temporal cohesion
Logical cohesion
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Question # 22
_______ is the most commonly used cache controller with a number of processor sets.
Choose an answer
L 211 controller
L 210 controller
L 214 controller
None
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Question # 23
Which of the following is an advantage of using macros over functions.
Choose an answer
Functions must have parameters, macros do not
The code associated with a function is expanded in line
Values passed to function must be of specific data type
The code associated with a function is not expanded in line.
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Question # 24
When did IBM released the first version of its disk operating system DOS version 1.0
Choose an answer
1981
1982
1983
1984
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Question # 25
Suppose the return type of function f is void. Which one of the following statements is true.
Choose an answer
Function f does not contain a return statement.
Function f does not have parameters
Function f return a generic value
Function f does not work correctly
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Question # 26
Object hide their inner workings of their operations from the outside world and from other object this is called.
Choose an answer
Composition
Encapsulation
Generalization
An object
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Question # 27
_________ is the most commonly used boundary presentation for a 3-D graphics objects.
Choose an answer
Data polygon
Surface polygon
System polygon
None
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Question # 28
Which command is used to set limits on file size.
Choose an answer
U limit
Alimit
dlimit
wilmit
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Question # 29
LM stand for
Choose an answer
Least MAR
Load MAR
Least MRA
Load MRA
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Question # 30
A name or number used to identify a storage location devices.
Choose an answer
A byte
A record
An address
All of above
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Question # 31
Excel is a.
Choose an answer
Graphic program
Word processor
A spread sheet
None of these
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