Based on scale networks
are classified into
1.
Local area network(LAN)
2.
Metropolitan area network(MAN)
3.
Wide area network(WAN)
Local Area Network (LAN)
A local area network (LAN) is a computer network that interconnects computers in a limited area such as a
home, school, or office building using network media. LAN is normally private
owned. These are use to exchange information and to share resources (both
hardware and software). The defining characteristics of LANs, in contrast to other networks, include their size,
transmission technology and topology.
The most common LAN topology is bus, ring and
star.
Metropolitan Area Network
A metropolitan area network (MAN) is a computer network that usually spans a city or a large campus. It may be a
single network or it may be means of connecting a number of LANs into larger
network so that resources may be share. Cable TV network is an example of MAN.
There
exist a standard for MAN, that is DQDB
(Distributed Queue Dual Bus) or IEEE
802.6
Wide Area Network (WAN)
A Wide Area Network is a
network that covers a large geographical area may comprise a country, continent
or even the whole world. WAN allows transmission of data and information across
a large geographical area.
The Internet
The
Internet collection of networks or network of networks that consists of millions of private,
public networks, of local to global scope, that are linked by a broad array of
electronic, wireless and optical networking technologies. The networks
are connecting through suitable hardware and software in seamless manner.
The basic
difference between WAN and Internet is that WAN is owned by single organization
while Internet is not so.
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In the definition of "The Internet" you should have include difference between "internet" and "Internet". internet consist of hundreds of network but Internet consist of hundreds of thousands of networks.
ReplyDeleteya we use Internet (with capital I) to represent global Internet.
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