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A cable is one or more wires or optical fibers bound together, typically in a common protective jacket or sheath. An optical fiber is a glass or plastic fiber designed to guide light along its length. Optical fibers are widely used in fiber-optic communication, which permits transmission over longer distances and at higher data rates than other forms of communications. Fibers are used instead of metal wires because signals travel along them with less loss, and they are immune to electromagnetic interference. And if you are seeking of good quality fiber cable just go to Blackbox.com. Just go there and then you will easily know all thing about this site.