The cabling used for data networking is similar to the phone cabling as it is twisted pair but of a much higher quality. The cable is known as Category (Cat) 5 or Cat 6. The cabling must be installed as a star wired configuration, that is the cabling runs from the point next to the modem, hub, or router uninterrupted up to the outlet next to the device that needs to be connected. Computer network wiring cannot be chained from one outlet to the next; each outlet is wired individually back to the hub or router next to the modem. If only one computer is required,it can be directly plugged into the modem. An alternative to a wired LAN especially useful for mobile devices is a wireless LAN, which can reduce or eliminate all the fixed wiring
