local networks are also called to LAN (Local Area Network). The definition given by these networks' IEEE is:
" a local area network is a communication system that allows a number of independent devices to communicate directly with each other, within an area geographical area of \u200b\u200bmoderate size and a physical channel along at a moderate speed communications .
This definition is actually a little antiquated, because it defines a local type of Peer to Peer ie a network where all machines have the same state, in other words, there is a machine that has control over the others. In fact a local network may also have a hierarchical or centralized control, in which case it is assumed that there is a machine with computing power than the other, which is given control of the communication. The second point of the definition given by the IEEE that specifies the geographical area should have a size not too large. A local network it should not exceed an area of \u200b\u200b5 km and therefore it is usually installed within the same building and buildings close enough to each other. With regard to the Communication
this must be done on a dedicated cable, then owned by the company, not public. The transmission medium allows the exchange of information at relatively high speed, including usually between 10 Mbps and 100 Mbps But now you're saying the use of fiber optic cables, which allow a higher transmission rate to 100 Mbps In addition, most local networks that are within walking distance, can be connected by a backbone (backbone) local, that is a high-speed network.
add that a LAN provides connectivity full-time local services.
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