exam1 - - One of the following is not an advantage of a...

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One of the following is not an advantage of a cellular telephone system.
a. privacy
b. large service area
c. no interference
d. mobility
ans: b
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Communication is the process of
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A key barrier in communications
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Electronics Communication was discovered in what century?
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Which of the following is not a major communications medium?
a. Free Space
b. Water
c. Wires
d. Fiber Optics Cable
ans: b
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Random interference to transmitted signals is called
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The communications medium causes the signal to be
Which of the following is not a source of noise?
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One - way communications is called
a. Half Duplex
b. Full Duplex
c. Monocomm
d. Simplex
ans: d
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Simultaneoues two-way communications is called
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The original electrical information signal to be transmitted is called
The process of modifying a high frequency carrier with the information to be
transmitted is called
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The process of transmitting two or more information signals simultaneously
over the same channel is called
a. Multiplexing
b. Telemetry
c. Detection
d. Modulation
ans: a
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Continuous voice or video signals are referred to as being
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Recovering information from a carrier is known as
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Transmission of graphical information over the telephone network is
accomplished by
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Measuring physical conditions at some remote location and transmitting this
data for analysis is the process of
a. Telemetry
b. Instrumentation
c. Modulation
d. Multiplexing
ans: a
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Receiving electromagnetic emissions from stars is called

d. Space Surveillance
ans: c
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A personnal communication hobby for individual is
ans: a
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Radar is based upon
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A frequency of 27 MHz has a wavelength of approximately
a. 11m
b. 27m
c. 30m
d. 81m
ans: a
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The voice freqency range is
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Another name for signal in the HF range is
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Television broadcasting ocurs in which ranges?