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Explanation:
A LAN, abbreviated from Local Area Network, is a network that covers a small geographical area such as homes, offices and groups of buildings. Whereas a WAN, abbreviated from Wide Area Network, is a network that covers larger geographical areas which can span the globe. An example of a widely used WAN is the Internet, which is a collection of tens of thousands of networks that connects tens of billions of devices.
Local Area Networks predominantly use Ethernet technology, which is a group of networking technologies that dictates how data is transmitted over the physical media, with the most common media being CAT# cabling.
Local Area Networks can use both Layer 1 and Layer 2 devices; Layer 1 devices include HUB’s and repeaters and the Layer 2 devices that can be used are switches and bridge devices. While LAN’s use Layer 1 and Layer 2 devices, WAN’s operate using Layer 3 devices such as multi-layer switches and routers.
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Explanation:
A LAN (local area network) is a group of computers and network devices connected together, usually within the same building. ... A WAN connects several LANs, and may be limited to an enterprise (a corporation or an organization) or accessible to the public. The technology is high speed and relatively expensive.