Ait235 Quizes

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WEEK 1 QUIZ
The _________ is a term for the device or unit that originates the information transfer. Answer
* receiver
* transmitter
* repeater
* amplifier
5 points
Question 2
A half-duplex circuit carries information ______________ .
Answer
* both ways but only one way at a time
* only one way
* both ways simultaneously
* none of the above
5 points
Question 3
The _________ is a term for the device or unit that receives the information transfer. Answer
* receiver
* transmitter
* repeater
* amplifier
5 points
Question 4
A _________ area network usually has an extremely limited distance of a few feet or meters. Answer
* local
* metropolitan
* personal
* wide
5 points
Question 5
A _________ area network usually has a limited distance within an office, building or campus. Answer
* local
* metropolitan
* personal
* wide
5 points
Question 6
A _________ area network usually covers a large national or international geographic area. Answer
* local
* metropolitan
* personal
* wide
5 points
Question 7
A _________ area network is usually public and serves broad areas such as towns and cities. Answer
* local
* metropolitan
* personal
* wide
5 points
Question 8
Analog electrical signals may take ___________ .
Answer
* a limited number of possible values
* only positive values
* only negative values
* any value
5 points
Question 9
Analog electrical signals are a ___________ representation of natural sounds. Answer
* perfectly exact
* near-perfect
* digital
* none of the above
5 points
Question 10
A simplex circuit carries information ______________ .
Answer
* both ways but only one way at a time
* only one way
* both ways simultaneously
* none of the above
5 points
Question 11
Digital electrical signals are usually ____________ .
Answer
* limited to only a few possible values
* not limited to any number of values
* limited to only positive values
* limited to only negative values
5 points
Question 12
A full-duplex circuit carries information ______________ .
Answer
* both ways but only one way at a time
* only one way
* both ways simultaneously
* none of the above
5 points
Question 13
Analog bandwidth is a measure of the capacity of a circuit or channel and is measured in ___________. Answer
* baud
* Hertz
* bits per second
* bytes per second
5 points
Question 14
Analog amplifiers, used to increase signal strength of analog signals, also __________ noise. Answer
* suppress
* reduce
* amplify
* -eliminate
5 points
Question 15
__________ convert digital signals to analog for transmission. Answer
* Codecs
* Modems
* Multiplexors
* Demultiplexors
5 points
Question 16
A single frequency sine wave, when displayed in the frequency domain, appears as a: Answer
* sine wave
* cosine wave
* single vertical line
* complex frequency plot
5 points
Question 17
Digital repeaters or regenerators ___________ the digital signal and ___________ noise. Answer
* distort, amplify
* reconstruct, remove
* alter, suppress
* reduce, increase
5 points
Question 18
Digital bandwidth , a measure of the data rate of a digital circuit, may be measured in ___________. Answer
* only in bits per second
* only in bytes per second
* either bits per second or bytes per second
* none of the above
5 points
Question 19
____________ convert analog signals to digital for storage or transmission. Answer
* Codecs
* Modems
* Multiplexors
* Demultiplexors
5 points
Question 20
____________ signaling uses the same network that carries the information. Answer
* Out-of-band
* In-band
* Over-band
* Under-band
WEEK 2 QUIZ...
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