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ECAT Computer Science Online Test MCQs With Answers
Question # 1
The equipment attached to CPU which computer can access are called
Choose an answer
Hardware
input output devices
peripherals
computer components
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Question # 2
In a computer system, which of the following has largest number of mechanical components and thus most unreliable.
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magnetic tape
magnetic drum
floppy disk
printer
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Question # 3
SNA is an example of
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De Jure Protocol
De Facto Protocol
Network organization
None
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Question # 4
An assembly language uses
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English words
mnemonic codes
0s and 1s
binary digits
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Question # 5
Which of the following gate is two level logic gate.
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OR gate
AND gate
EXCLUSIVE OR gate
NAND gate
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Question # 6
Raw data is processed by the computer into.
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number sheets
updates
paragraphs
information
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Question # 7
Who is responsible for introducing the concept of stored program.
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Blaise Pascal
Herman Hollerith
Charles Babbage
John von Neumann
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Question # 8
___________coding scheme is used by IBM
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Unicode
ASCII
EBCDIC
BCD
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Question # 9
1 byte consists of
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4 bits
8 bits
16 bits
32 bits
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Question # 10
Which of the following statements best describes a star topology?
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Needs significantly less cabling than other topologies
Breaks in a single cable segment takes down entire network
More difficult to reconfigure than other topologies
Centralized monitoring and management
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Question # 11
The part of the computer system which performs the house keeping functions is called
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Interpreter
Compiler
Operating system
Assembler
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Question # 12
The output will be one in case any input is one in the case of.
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OR gate
AND gate
NAND gate
NOT gate
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Question # 13
A set raw, unprocessed facts, figures and symbols is called
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Information
Data
Instruction
Code
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Question # 14
The height of the wave is called :
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Oscillation
Amplitude
Signal
Frequency
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Question # 15
The Height of wave within a given period of time is called :
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Amplitude
Oscillation
Frequency
Pulses
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Question # 16
Mainframe computers are capable of communicating with several users simultaneously by.
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using a terminal
using a supercomputer
using a workstation
timesharing
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Question # 17
Which of the following topologies is passive?
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Star topology
Ring topology
Bus topology
Hybrid topology
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Question # 18
In the computer world, the word digital means information that is in.
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discrete units
units that can be counted
continuous , smooth form
a and b
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Question # 19
The number of bytes in the following number (1111, 1011, 0111,0100,1010) is.
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5
2 1/2
10
1 2/4
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Question # 20
A computer drives its basic strength from
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speed
accuracy
memory
all of above
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Question # 21
AB
16
+ CD
16
= ________
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101111010
2
101111000
2
101111110
2
101101000
2
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Question # 22
Hellerith's Tabulating Machine company eventually became.
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IBM
AT & T
Apple
General Electric
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Question # 23
Tool to change PROM chips are called.
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chip kits
RAM burners
PROM burner
none of these
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Question # 24
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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Question # 25
What is the octal equivalent of the binary system :10111101.?
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675
8
275
8
572
8
573
8
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Question # 26
The equipment attached to CPU which computer can access are called.
Choose an answer
hardware
input/output devices
peripherals
computer components
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Question # 27
The encoding scheme of data represent as
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EBCDIC code
ASCII code
Unicode
All of the above
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Question # 28
Which one of the following is a graphical shell?
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UNIX
page
utility program
GUI
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Question # 29
A driver is.
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hardware
a peripheral device
a card
software
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Question # 30
The operation of arithmetic logic unit (ALU) is directed by.
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the ALU itself
program
control unit
memory unit
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Question # 31
An AND gate will function as OR if.
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all the inputs to the gates are "I"
all the inputs are "O"
a Not gate is added to it
all the inputs and outputs are complemented
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