Optical fiber and twisted pair are two common types of communication cables used in networking. A computer cable is a medium used to transmit data between devices such as computers, servers, routers, and switches. Next, we'll compare. When designing or upgrading a network, understanding the differences between coaxial cable, twisted pair, and fiber optic cable—in terms of bandwidth, transmission distance, cost, and interference resistance—is essential. However, real-world decisions are not based on performance alone;. Twisted pair cables consist of color-coded pairs of insulated copper wires, one wire carries the signal, and the other is used for ground reference.