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ECAT Computer Science Online Test MCQs With Answers
Question # 1
At the beginning of the instruction cycle, the contents of the Instruction Register specify.
Choose an answer
Operand for the instruction being executed
Instruction itself
Operand for the instruction to be executed next
None of above
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Question # 2
A digital computer performs its computation by
Choose an answer
mechanical means
analogy
guessing
counting
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Question # 3
Microwave and Communication Satellite are example of
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Guided
Un-guided
Simplex
Router
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Question # 4
A standardized business language is
Choose an answer
CODASYL
BASIC
COBOL
Ada
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Question # 5
Choose an answer
A + B
+
C + D
A
+
B
C
+ D
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Question # 6
A set raw, unprocessed facts, figures and symbols is called
Choose an answer
Information
Data
Instruction
Code
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Question # 7
The widely used code in data communication is.
Choose an answer
a bit ASCII
7 bit ASCII
EBCDIC
none of these
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Question # 8
If A and B are two 1-bit numbers, what logic gates will be required to test for A=B?
Choose an answer
NOR gate
EXCLUSIVE OR gate
EXCLUSIVE NOT gate
OR gate
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Question # 9
The CRT technology with the best resolution.
Choose an answer
MICR
VGA
SVGA
LCD
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Question # 10
The most commonly used output devices in a computer system are
Choose an answer
printers and monitors
disk drives and printers
disk drive and tape drives
tape drive and keyboards
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Question # 11
A computer drive its basic strength from
Choose an answer
speed
accuracy
memory
all of above
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Question # 12
A way of physically organizing data on a disk pack to minimize seek time uses.
Choose an answer
sequential file
removable hard
the cylinder method
Winchester technology
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Question # 13
The speed at which a disk can find data being bought is called
Choose an answer
access time
data transfer rate
direct time
cylinder time
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Question # 14
Another name for an operating environment is
Choose an answer
page
layer
shell
supervisor
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Question # 15
Odd parity of a word can be conveniently tested by.
Choose an answer
OR gate
XOR gate
NOR gate
NAND gate
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Question # 16
The Barcode is called
Choose an answer
Universal product code
EBCDIC code
ASCll Code
Unicode
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Question # 17
A dump terminal signifies that
Choose an answer
It has lower IQ compared to an intelligent terminal
It can not be used as an independent computer
It does not have a keyboard connected to it
It belongs to firs generation computers
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Question # 18
An integrated circuit is.
Choose an answer
a complex circuit
an integrating device
fabricated on a tiny silicon chip
another name for chip
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Question # 19
A device that receives messages is called:
Choose an answer
Transmitter
Receiver
Source
Sender
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Question # 20
The differential equations are solved by.
Choose an answer
analog computers
digital computers
differential machine
both analog and digital computers
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Question # 21
The heart of the digital computer is
Choose an answer
control unit
memory unit
logic unit
visual display unit
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Question # 22
The business conducted with the help of computer network is called
Choose an answer
E-commercial
E-commerce
E-comunication
Nothing
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Question # 23
_______is not component of data communication.
Choose an answer
Medium
Voltage
Decoder
Receiver
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Question # 24
A network type in which all computers have equal status.
Choose an answer
communication links
peer to peer
WAN
direct connect
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Question # 25
First-generation computers were characterized by the use of the.
Choose an answer
microprocessor
vacuum tube
transistor
integrated circuit
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Question # 26
Which of the following function is referred as the complementary.?
Choose an answer
OR function
NOT function
NAND function
AND function
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Question # 27
Which of the following does not represent an I/O devices?
Choose an answer
speaker
OCR
Joystick
ALU
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Question # 28
A 64 K-bit word computer has
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64 x 1000 bits
64 x 1012 bits
64 x 1020 bits
64 x 1024 bits
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Question # 29
Arrow keys are also known as :
Choose an answer
Function keys
Cursor control keys
Toggle keys
Special keys
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Question # 30
Data processing is also called :
Choose an answer
Data computing
Information technology
Information system
Calculating
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Question # 31
The time require for the access arm to get into position over a particular track is.
Choose an answer
rotational delay
data transfer
seek time
head switching
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