Abstract : Computer networking technologies are the glue that binds these elements together. Networking allows one computer to send information to and receive information from another. We can classify network technologies as belonging to one of two basic groups. Local area network (LAN) technologies connect many devices that are relatively close to each other, usually in the
same building. The library terminals that display book information would connect over a local area network. Wide area network (WAN) technologies connect a smaller number of devices that can be many kilometers apart.
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