LANs, WLANs and WANs, network hardware, the internet and intranet, IP and MAC addresses, and methods of communication.
Types of network
LAN (Local Area Network) — covers a small area (one building/site), e.g. a school or office.
WLAN (Wireless LAN) — a LAN that uses Wi-Fi instead of cables.
WAN (Wide Area Network) — covers a large geographical area and connects LANs together, often using third-party communication lines; the internet is the largest WAN.
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