DATA COMMUNICATIONS NETWORKING
the diff methods by which we r establishing communication in networking.
LAN :: max, 100 user, n a buliding
MAN::metropolitian area networking, city level e,g city univ & PMDC network, 100-250 users, out traffic sys, pesh tv station , police virlus netork
WAN::wide area netwok, country / contient level….all ptv sys….all sub continent
wide area network , more than 250……
INTERNET::international network…………
intranet :: orga network ….only org
extranet :: when intranet can be acces by out side org people