Internet - 53these modems include an ‘router’ that provides network and wi-fiaccess.CableA cable connection provides fast and ‘always-on’ Internet service via acable television line. This service is generally available in large cities.You can use your telephone and watch cable TV at the same time youare connected to the Internet.3G (WWAN or 'Wireless Wide-Area Network')A 3G connection allows you to use cellular networks (such as thoseused by a mobile phone) to connect to the Internet while away fromhome. The socket for a SIM card may be built in to your computer, ormay require an external device, such as a USB modem or even anappropriately equipped mobile phone.Note: If your computer includes a SIM card slot, you require acompatible SIM card and a contract with a cellular provider.Before using the 3G features, check with your service provider tosee if any additional charges will be incurred, especially roamingcharges.Network connectionsA LAN (Local Area Network) is a group of computers (for example,within an office building or home) that share a commoncommunications line and resources. When you set up a network, youcan share files, peripheral devices (such as a printer) and an Internet