Dear InetDaemon, I would like to know the difference between
The terms Local Area Network (LAN) and Wide Area Network (WAN) are general descriptions of geographic size of the network and to some extent, the protocols in use. The acronym LAN tends to be used to refer to a network that encompasses a single room or a building at distances measured in feet or meters. A LAN is most often used to connect computer workstations and servers. Typically, Physical Layer protocols that are high speed and transmit across short distances are used in LANs.
Examples of Physical Layer protocols used in LANs include:
The acronym WAN is used to refer to networks spanning much areas larger than a LAN does and often include circuits provided by a telecommunications carrier or a private leased line. Protocols that can transmit across longer distances measured in miles or kilometers are used to build WANs. Examples of Physical Layer protocols used to build WANs include:
InetDaemon.Com has plenty of tutorials on LANs, WANs and all the protocols used to build them.