WANs and LANs
Definitions, differences and uses
LAN stands for Local Area Network. A LAN is a network that connects clients with a topology. These networks can be connected to a WAN, such as the Internet. A LAN can be built quite inexpensively with hubs and Ethernet cables.
LANs can be used to share files, play games with multiplayer and use printers shared with multiple computers. A good example is a school network. The school needs to send data like lessons between classroom computers, and save data to a centralised location. Also, the network needs to have limited access, to prevent malicious people attempting to break the network.
Fast data sharing between computers, and is safe from people not in the network.
Can only share within the network, so the teachers at home can't access their files.
WAN stands for Wide Area Network. A WAN consists of multiple LANs, connected together. WANs span large geographical areas, such as multiple counties. WANs can be used to send a lot of different types of data, such as images etc.
A good example is the Internet. The internet consists of many LANs, or the webservers, connected together with ISPs.
Enables connections between a lot of computers, which easily enables a lot of data to be shared.
Anyone in the area can normally access the WAN, which can lead to "hacking" etc.