The standard connector for unshielded twisted pair cabling is an RJ-45 connector. This is a plastic connector that looks like a large telephone-style connector.
A slot allows the RJ-45 to be inserted only one way. RJ stands for Registered Jack, implying that the connector follows a standard borrowed from the telephone industry. This standard designates which wire goes with each pin inside the connector.
Fiber Optic Cable
Fiber optic cabling consists of a center glass core surrounded by several layers of protective materials. It transmits light rather than electronic signals eliminating the problem of electrical interference. This makes it ideal for certain environments that contain a large amount of electrical interference. It has also made it the standard for connecting networks between buildings, due to its immunity to the effects of moisture and lighting. Fiber optic cable has the ability to transmit signals over much longer distances than coaxial and twisted pair. It also has the capability to carry information at vastly greater speeds. The cost of fiber optic cabling is comparable to copper cabling; however, it is more difficult to install and modify.
Facts about fiber optic cables:
* Outer insulating jacket is made of Teflon or PVC.
* Kevlar fiber helps to strengthen the cable and prevent breakage.
* A plastic coating is used to cushion the fiber center.
* Center (core) is made of glass or plastic fibers.