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Online Tests
ECAT Computer Science Chapter 6 Data Communication Online Test MCQs With Answers
Question # 1
The process of transferring data from one location to another is called:
Choose an answer
Data processing
Data Computing
Data communication
Data sequencing
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Question # 2
What best describes a bus topology network?
Choose an answer
The number of computers on the network does not affect performance
Easier to troubleshoot than other topologies
Needs significantly more cabling than other topologies
Media is inexpensive and easy to work with
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Question # 3
A computer based system in which a telephone message is recorded in digital form and then forwarded to others is
Choose an answer
a teleconferencing
voice mail
a bulletin board
telecommuting
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Question # 4
The process of converting from analog to digital is called.
Choose an answer
modulation
line switching
telecommuting
demodulation
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Question # 5
BIT stands for:
Choose an answer
Binary integer
Binary Digit
Binary Interval
None of the above
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Question # 6
The music and speech represent the:
Choose an answer
Image Data
Audio Data
Video Data
Text Data
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Question # 7
People on a LAN can share.
Choose an answer
Printer
CD/ROM disk drive
modem
fax machine
All of the above
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Question # 8
The signals produced by a computer or terminal to be sent over phone lines must be converted to.
Choose an answer
modems
analog signals
digital signals
microwave
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Question # 9
The charts, graphs and pictures are examples of:
Choose an answer
Image
Audio
Video
Text
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Question # 10
Who invented the modem?
Choose an answer
IBM
DEC
AT&T information System, USA
Apple computers Inc
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Question # 11
What layer of the OSI model does data compression?
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Network
Data Link
Presentation
Physical
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Question # 12
The height of the wave is called :
Choose an answer
Oscillation
Amplitude
Signal
Frequency
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Question # 13
Light sound and radio waves are examples of :
Choose an answer
Analog Signals
Digital Signals
Simple Signals
None
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Question # 14
_______is not component of data communication.
Choose an answer
Medium
Voltage
Decoder
Receiver
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Question # 15
The device used with satellite transmission that ensures that strong outgoing signals do not interface with weak incoming signals is called a.
Choose an answer
microwave
transponder
cable
modem
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