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ECAT Computer Science Chapter 6 Data Communication Online Test MCQs With Answers
Question # 1
Microwave transmission, coaxial cables, and fiber optics are examples of.
Choose an answer
modems
communication links
gateways
ring network
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Question # 2
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 # 3
___________ code systems can represent upto 65536 symbols
Choose an answer
ASCII-7
EBCDIC
ASCII-8
Unicode
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Question # 4
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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Question # 5
IBM stands for
Choose an answer
International Business Machine
International Binary Machine
Internal Business Machine
International Business Microsoft
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Question # 6
The number of times a wave repeats during a specific time interval is called
Choose an answer
Amplitude
Oscillation
Frequency
Pulses
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Question # 7
How many pairs of computers can simultaneously communicate on Ethernet LAN?
Choose an answer
1
2
3
multiple
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Question # 8
The charts, graphs and pictures are examples of:
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Image
Audio
Video
Text
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Question # 9
_________Coding schemes use 4 bit code
Choose an answer
Unicode
ASCII
EBCDIC
BCD
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Question # 10
A device that connects multiple nodes to the network is.
Choose an answer
A modem
A repeater
A router
A hub
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Question # 11
___________coding scheme is used by IBM
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Unicode
ASCII
EBCDIC
BCD
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Question # 12
Who invented the modem?
Choose an answer
IBM
DEC
AT&T information System, USA
Apple computers Inc
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Question # 13
Token passing prevents data collisions by.
Choose an answer
Using code to steer tokens around each other
Having multiple tokens take alternate routes.
Allowing only one computer at a time to use the token
Using zones to control network traffic congestion
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Question # 14
Centralized processing but with access from terminals is known as.
Choose an answer
DDP
a ring network
telecommuting
a teleprocessing system
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Question # 15
The arrangement in which most of the processing is done by the server.
Choose an answer
simplex transmission
electronic data interchange
file server
client/server
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Question # 16
The type of modulation that changes the height of the signal is called.
Choose an answer
frequency
phase
amplitude
prephase
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