Networking cable

Optical fiber cable is used for long distances or for applications requiring high bandwidth or electrical isolation.

Most current Ethernet devices support Auto MDI-X, so it does not matter whether crossover or straight cables are used.

[2] An optical fiber cable consists of a center glass core surrounded by several layers of protective material.

The transmission of energy in the line occurs totally through the dielectric inside the cable between the conductors.

Coaxial lines can therefore be bent and twisted (subject to limits) without negative effects, and they can be strapped to conductive supports without inducing unwanted currents in them.

In December 2008, the ITU-T adopted Recommendation G.hn/G.9960 as the first worldwide standard for high-speed powerline communications.

A picture of an unterminated cable, showing four twisted pairs of wires
A twisted pair cable with shielding
Multi-mode fiber cables with LC (top) and ST (bottom) optical fiber connectors, both with protective caps in place.
A coaxial cable has a central conductor surrounded by a sheath of conductor with insulation in between.