16-07-2014, 03:31 PM
Categories of
networks
Categories.pptx (Size: 195.13 KB / Downloads: 9)
Introduction:-
A network uses a combination of hardware and software to send data from one location to another. The hardware consist of the physical equipment that carries signals from one point of the network to another. Today when we speak of network, we are generally referring to three primary categories. According to network size, ownership, distance it covers and physical architecture, network are categories in to following three:-
Explanation:-
1) LAN:-
A local area network [LAN] is usually privately owned and links the devices in a single office, building or campus.
Depending on the need of an organization and the type of technology used, a LAN can be a simple as two pc’s and a printer in someone’s home or office or it can extend throughout a company and include audio and video peripheral.
Currently, LAN size is limited to a few kilo meter.
LAN are design to allow resources to be shared can include hardware, software or data.
Advantages:-
It permits sharing of expensive hardware.
LAN improves the productivity because information retrieval. Processing, storage and other functionality can be improved.
It provides high transmission rate to accommodate the needs of both people & equipment.
LAN provides cost effective multiuser computer environment.
2)MAN:-
A metropolitan area network [MAN] is a large computer network that spans a metropolitan area or campus.
MANs provide internet connectivity for LANs in a metropolitan region, and connect them to wider area network like the internet.
Metropolitan area network [MANs] are high private network which are created by one or more dedicated point to point links between multiple location.
EXAMPLEs:-
Pager, cellular mobile phones, internet.
ADVANTAGES:-
WAN has no limit of area, so it is world wide web.
WAN supports global markets and global businesses.
Multi countries organization have a facility to form their global integrated network through WAN.
For network databases, WAN allows users all over the network to access and update a single, consistent view of data.