A common transmission medium that consists of a heavy copper wire at the center, surrounded by insulating material, then a cylindrical conductor, and finally an outer protective plastic covering is called a:
A) fiber-optic cable.
B) coaxial cable.
C) twisted pair of wires.
D) token ring.
B
Business
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Fairs and festivals are a bit of heritage attractions, commercial attractions, and live entertainment
a. true b. false
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_______________________ information is not subjective ad is relatively easy to measure
a. Firmographic b. Psychographic c. Demographic d. None of the above
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