Which of the following statements is incorrect?
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A coaxial cable consists of an inner copper conductor that is held in position by circular spacers.
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A twisted pair cable consists of two insulted copper wires.
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In optical fibre, data is transmitted through a very thin glass or plastic fibres with a beam of light.
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None of the above
a. Twisted-wire pair - A twisted pair consists of two insulated copper wires.
b. Coaxial cable - Coaxial cable consists of an inner copper conductor that is held in position by circular spacers.
c. Optical fibre - Optical fibre has been a technological breakthrough in communications. It supports data rate of 2 giga bits/sec. Fibre optics provide high quality transmission of signals at very high speeds and are not affected by electromagnetic interference. The transfer of data is through very thin glass or plastic fibres with a beam of light. The light source is the laser beam that is driven by a high-speed high-current driver.