Despite advances in wireless technologies, many computer networks in the 21st century still rely on cables as a physical medium for devices to transfer data. Cable is the medium through which information usually moves from one network device to another. There are several types of cable which are commonly used with LANs (local-area network). In some cases, a network will utilize only one type of cable, other networks will use a variety of cable types. The type of cable chosen for a network is related to the network’s topology, protocol, and size. Understanding the characteristics of different types of cable and how they relate to other aspects of a network is necessary for the development of a successful network. An advantage to having a cabled network is faster speed and better security.