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Online Tests
ECAT Computer Science Chapter 6 Data Communication Online Test MCQs With Answers
Question # 1
How many pairs of computers can simultaneously communicate on Ethernet LAN?
Choose an answer
1
2
3
multiple
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Question # 2
Project 802 defines standards for which layers of the OSI model?
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Application and Presentation layers
Physical an Date Link layers
Transport and Network layers
Network and Data Link layers
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Question # 3
Light sound and radio waves are examples of :
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Analog Signals
Digital Signals
Simple Signals
None
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Question # 4
Now-a-day computers all over the world can talk to each other. Which is one of the special accessories essential for this purpose?
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Fax card
Modem card
Network Adapter card
DVD
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Question # 5
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 # 6
Communication between a computer and a keyboard involves
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Simplex
half-duplex
Full-duplex
automatic
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Question # 7
Which of the following topologies is passive?
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Star topology
Ring topology
Bus topology
Hybrid topology
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Question # 8
The type of modulation that changes the height of the signal is called.
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frequency
phase
amplitude
prephase
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Question # 9
Which of the following does not provide a graphical user interface.
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OS/2
MS-DOS
Macintosh
Windows NT Workstation
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Question # 10
Microwave transmission, coaxial cables, and fiber optics are examples of.
Choose an answer
modems
communication links
gateways
ring network
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Question # 11
Cabling on a linear bus topology can be extended using which of the following?
Choose an answer
Terminator
Barrel connector
Network adapter card
Medium attachment unit
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