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ECAT Computer Science Online Test MCQs With Answers
Question # 1
A type of computer that is faster because it has fewer instructions.
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symbolic
RISC
ASCII-8
ROM burner
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Question # 2
A CPU has.
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control unity consisting of program counter and instruction decoder, and arithmetic unit having accumulator
bubble memory
visual display unit
auxiliary storage unit
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Question # 3
The focus of the fifth generation is.
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connectivity
symbolic languages
silicon
memory chips
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Question # 4
Which of the following FORTRAN statement is valid?
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DIST=VELO * + TIME
HYP ** 2=BASE **2 + PERP ** 2
X = X +1.0
SAL + COMM = 180.0 + PROFIT
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Question # 5
Pointing devices are
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Mouse
Trackball
Touch Screen
All of the above
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Question # 6
The commutative law in Boolean Algebra, where a, b and c are binary number is.
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a+0=a
a+1=1
a+b=b+a
a. (b+c) = a.b +a.c.
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Question # 7
The basic operation performed by the computer is called
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arithmetic operation
logic operation
storage and retrieval operation
all of above
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Question # 8
According to Boolean algebra x + 1 = ______________
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0
1
x
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Question # 9
Data gathering and data analysis take place.
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after the system survey
after system analysis
during system design
during evaluation
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Question # 10
A systems analyst would observe the flow of data and interrelations of people within an organization during.
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detail design
preliminary design
systems analysis
a system survey
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Question # 11
The Media Access Control sub layer resides in which layer
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Data link
Physical
Network
Transport
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Question # 12
The most commonly used character code/s transmission is/are
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EBCDIC
ASCII
both EBCDIC and ASCII
nethier EBCDIC and ASCII
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Question # 13
An arrangement in which data is transmitted in both directions at a time is called
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Simplex
Full duplex
Half duplex
Multi-duplex
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Question # 14
Odd parity of a word can be conveniently tested by.
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OR gate
XOR gate
NOR gate
NAND gate
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Question # 15
A search engine is
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A software to search for engines
A device search for motor engine
A website that sells products and services
A website that look through databases for matching criteria
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Question # 16
A group of electronic, magnetic, or mechanical devices that store data is called
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register
address
program
software
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Question # 17
A hybrid computer is the one having combined properties of
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super and microcomputers
mini and microcomputers
analog and digital computers
none of the above
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Question # 18
TIme-sharing of resources by users is usually.
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based on time slices
based on input
event-driven
operated by spooling
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Question # 19
Communication circuits that transmit data in both directions but not at the same time are operating in.
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Simplex mode
Half duplex mode
Full Duplex mode
None of above
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Question # 20
Which input device is often attached to laptop computers:
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trackball
inscriber
wand reader
graphic display
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Question # 21
Information travels between components of a computer through groups of wires called.
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cards
busses
slots
ports
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Question # 22
The following register keeps track of the program during execution.
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Address register
Program counter
Data register
Accumulator
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Question # 23
Communication between a computer and a keyboard involves
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Simplex
half-duplex
Full-duplex
automatic
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Question # 24
1 byte consists of
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4 bits
8 bits
16 bits
32 bits
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Question # 25
CPU stand for:
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Centre Product unit
Central Programming Unit
Control Program Unit
Central Processing Unit
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Question # 26
Functions can perform by using mouse
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Double-click
Drag and Drop
Right-click
All of the above
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Question # 27
A computer can not do anything without
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programme
input device
output device
VDU
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Question # 28
Pick out the wrong definition
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Access time - time needed to access the output
EDP- acronym for Electronic Data Processing
COBOL - a language used for business data processing
Control unit - heart of a computer
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Question # 29
The time require for the access arm to get into position over a particular track is.
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rotational delay
data transfer
seek time
head switching
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Question # 30
The highest layer of OSI model is
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Physical layer
Network layer
Presentation layer
Application layer
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Question # 31
Charles Babbage set out to create a device that could carry out any calculation to twenty digits of accuracy called a(n):.
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computer
analytical engine
calculator
mainframe
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