This document provides information about LAN (local area network) and WAN (wide area network). It defines LAN as a small network within a limited geographic area like a single office that is controlled by one administrative authority. WAN is defined as a larger network that spans metropolitan, regional or national boundaries using routers and public communication links. The document compares LAN and WAN, noting that LAN covers a small area using technologies like Wi-Fi and Ethernet, while WAN spans larger areas using technologies like optic wires, microwaves and satellites. It provides advantages of both networks such as sharing resources and sending messages quickly.

1. Welcome
LAN & WAN
Presented by:
University roll no. – 09123005045
ID no.- EIE/09/07

2. CATEGORY OF NETWORKS
 LAN (local area network)
 MAN (metropolitan area network)
 WAN (wide area network)

3. LAN
Local area network.
small geographic area (e.g. room,
office).
controlled by one administrative
authority
usually high speed
always shared

4. Pictorial representation of LAN :-

5. ADVANTAGES OF LAN
 expensive hardware can be shared e.g.
laser printer.
 users can access the same files.
 messages can be sent between users.
 a single Internet connection can be shared
among many users.
 network software is cheaper than buying
individual packages.

6. WAN
 Wide area network.
 WAN covers a large geographical area.
 Crosses metropolitan, regional, or national
boundaries.
 Uses routers and public communications links. e. g.
Internet.
 Used to connect LANs and other types of networks
together.
 Option for WAN connectivity
1. Leased Line
2. Circuit switching
3. Packet switching

7. Pictorial representation of WAN :-

8. ADVANTAGES OF WAN
 These are similar to those of LAN's except the scale of
sharing.
 Covers a large geographical area so long distance
businesses can connect on the one network.
 Shares software and resources with connecting
workstations.
 Messages can be sent very quickly to anyone else on
the network.
 Share information/files over a larger area.

9. LAN & WAN COMPARISON
LAN WAN
 Small area covered  Large area covered
 Use public  Use public
communication links communication links
 Usually a low speed  Usually fast speed
 Uses Wi-Fi, Ethernet  Uses optic wires,
cables microwaves, satellites

10. BIBLIOGRAPHY
 http://www.wikipedia.org
 http://www.google.co.in/
 http://compnetworking.about.com
 http://www.slideshare.net
 http:// compnetworking.about.com

11. THANK YOU