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ECAT Computer Science Online Test MCQs With Answers
Question # 1
A set of instructions in a computer is:
Choose an answer
Software
Program
Hardware
Both A and B
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Question # 2
Memory is divided into many numerically addressed.
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logic
locations
codes
cells
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Question # 3
The complex set of electrical circuitry that executes program instructions is called the.
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register
central processing unit
accumulator
bus line
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Question # 4
Which of the following operations are used by Boolean algebra.?
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Boolean addition
Boolean multiplication
Boolean complementation
All of the above
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Question # 5
Binary number 10101101 is equivalent in decimal form to.
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170
171
173
174
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Question # 6
A network of geographically distant computers and terminals is called a.
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bus
WAN
gateway
LAN
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Question # 7
According to Boolean algebra x + 1 = ______________
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0
1
x
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Question # 8
An interfact is basically a component that
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test the system
corrects the errors in program
allows two incompatible entities with one another
enhances the capability of a system/equipment
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Question # 9
Data processing is also called :
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Data computing
Information technology
Information system
Calculating
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Question # 10
Collection of raw facts and fiaures is called :
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Information
Processing
Data
Output
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Question # 11
During E time the ALU
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examines the instruction
enters the instruction
executes the instruction
elicits the instruction
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Question # 12
Program maintenance means
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Maintaining a program exactly the way it was initially developed
Changing a program due to changes in the organization
Removing the errors from a program
Changing a program due to changes in the organization
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Question # 13
The software tools that allow a computer to be used for specific purposes are called.
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firmware
terminals
hardware
application programs
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Question # 14
The binary number 101000101011 is equal to the hexadecimal number
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A2D
C2D
A2B
B2C
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Question # 15
Computer output produced as small film images is called.
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OCR
COM
LCD
OMR
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Question # 16
Word is 16 bits is
Choose an answer
65536
64526
32526
34526
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Question # 17
The different memory locations are identified by hexadecimal numbers called.
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ASCII code
bytes
BCD numbers
addresses
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Question # 18
A bootstrap is.
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a memory device
a device to support the computer
a small initialization program to start up a computer
an error correction technique
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Question # 19
A color screen with the best resolution has the most.
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CRT
VGA
COM
pixel
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Question # 20
Boolean algebra is.
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used for arithmetical operation is ALU
an aid for binary conversion
useful for error detection and error correction
used to describe the behavior and structure of logic networks and as an aid in the design of logic system
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Question # 21
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 # 22
A network type in which all computers have equal status.
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communication links
peer to peer
WAN
direct connect
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Question # 23
Printer is an example of
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Softcopy
Hardcopy
Photocopy
Nothing
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Question # 24
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 # 25
For calculating taxes, input to a computer could be.
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numbers representing wages
income
tax tables
all of the above
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Question # 26
In computer science, by information we mean
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Any output coming out form
Processed data put in intelligent form
A report printed by computer
Plural of data
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Question # 27
Temporary storage areas within the CPU are called
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ROMs
Registers
Accumulators
Address
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Question # 28
The five basic parts of a computer system are
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hardware, software, memory,VDU, and magnetic tape
store,arithmatic and logic unit, control unit, input device, and output device
CPU, ALU,software,firmware, and operating system
data bus,control lines,address bus,memory, and printer
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Question # 29
Binary Coded decimal number express each decimal digit as
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binary digits
nibble
word
byte
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Question # 30
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 # 31
Primary storage for the UNIVAC was via
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punched cards
transistors
magnetic cores
disk packs
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