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A networking medium capable of conducting modulated light
transmissions. Compared to other networking media, it is more expensive;
however, it is not susceptible to electromagnetic interference and is capable
of higher data rates than any of the other types of networking media discussed
here. Fiber-optic cable does not carry electrical impulses, as other forms of
networking media that employ copper wire do. Instead, signals that represent
bits are converted into beams of light.
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