1. There are several types of computer networks including local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). LANs connect computers within a small geographic area like a home or office while WANs connect LANs together over large geographic areas. 2. Computer networks also include intranets, extranets, and the Internet. An intranet is a private network within an organization while an extranet allows controlled access to outside users. The Internet is a worldwide public network that connects millions of other networks. 3. Networks require both hardware and software. Hardware includes physical devices like routers, switches, and cables. Software includes operating systems