The ethernet cable we use is Category 5 unshielded twisted pair. RJ stands for Registered Jack, implying that the connector follows a standard borrowed from the telephone industry. Coaxial cabling is a conductive wire surrounded by an insulating layer, wire mesh and a protective outer cover. It can transmit. It has a data rate of 500 Mbps and a bandwidth of 500 MHz.
Optical fiber consists of a thins strands of glass.
Light rather than electricity travels through the cables. It is a very efficient method for data communications over long distances. It is completely resistant to electrical interference and can transmit enormous amounts of data, up to 1Gbps. The topology of a network is its shape or the layout of its cable. Some network types can use more than one topology.