INTERNET is a wide term to be explained. INTERNET literary means network of networks i.e, it is the networking of the inter-related computers. There are two different terminologies to be kept in mind, that are:-
INTERNET deals with WAN and MAN.Where WAN stands for Wide Area Network and MAN stands for Metropolitan Area Network.WAN deals with far flung areas and is also connected with plenty (millions) of people.The server built for this purpose is so strong that it provides subscription to millions of people.WAN helps in connecting different countries.WAN is the slowest one out of three.MAN is limited to the metropolitan cities of a particular country.The perfect example for this is the railways and airways, where two seat numbers are not possible.The database is maintained so that there is no repetition of numbers.This helps users not to get clash between same seat for two people.This data is remotely accessed and also provides it to the other cities.MAN is slower than LAN but faster than WAN.Very famous Ethernet is LAN.
INTERANET deals with the LAN where the network works within a particular organization or any company or any school or college.The LAN is fast as comparison with MAN and WAN.