Protective sheaths covering one or several usually insulated wires; they transmit data between network components.
Cable that contains one or several pairs of twin wires twisted around one another; it transmits signals in the form of electric pulses.
fiber optic cable
Cable that holds thin glass filaments or optical fibers that transmit signals in the form of light pulses at high speed.
Cable that holds two insulated concentric conductors; it transmits signals in the form of electric pulses without loss of quality.