computer networks are created by different entities ...standard are needed so that these heterogeneous networks can communicate with one another ...the two best known standards are the osi models and the internet model ....
the OSI model defines a severe layer network the internet model defines a five layers network....
CATEGORIES OF NETWORKS:-
today we speak of networks we are generally referring to two primary categories local area network and wide area networks ....the category into which a network falls is determined by its size ....A LAN normally covers an area less than 2 meter....a WAN can be worldwide ....network of a size in between are normally referred to as metropolitan area networks and span tens of miles....
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the OSI model defines a severe layer network the internet model defines a five layers network....
CATEGORIES OF NETWORKS:-
today we speak of networks we are generally referring to two primary categories local area network and wide area networks ....the category into which a network falls is determined by its size ....A LAN normally covers an area less than 2 meter....a WAN can be worldwide ....network of a size in between are normally referred to as metropolitan area networks and span tens of miles....
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