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Types of network: LAN (local area network), WAN (wide area network)
Factors that affect the performance of networks
The different role of computers in client-server and a peer-to-peer network
The hardware needed to connect stand-alone computers into a Local Area Network: Wireless access points, routers/switches, NIC (Network Interface Controller/Card), Transmission media
The internet as a worldwide collection of computer network DNS (Domain Name Server), hosting, the cloud
The concept of virtual networks.