Networks
Networks Notes PAN= Panoral Area Net LAN= Local Area Net MAN= Metropolitan Area Net WAN= World Area Net Computer networks A computer network is a set of computers connected to each other so they can share resources and exchange information. We can divide computer networks into three categories, depending on their size: Local area networks or LANs Metropolitan area networks , made up of several LANs Wide area networks , covering a country or continent. LANs can also be categorised according to the way in which the different machines are are connected to each other. Elements in a network All computer networks have a logical component, which is an operating system and applications that work on a network, and a physical component connecting the different computers to each other. Each computer needs an adaptor or networkcard to send information to the other computers and receive information back. The hub distribut...