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Wide Area Network (WAN) : WAN is network that covers a large geograpichal area located within a country side and
worldwide networks such as city, country , or the world
: WAN using a communications channel that combines many type of media such as
telephone lines, cable and radio waves .
: The internet is the world's largest WAN.
Area of Coverage : WANs is a large gteographical area located within a countryside and worldwide networks such as
city,country and world.
Ownership : WANs have no ownership .
1 . Enterprise Private Network (EPN)
Type of network build by an interprise to interconnect various campony site ,
e.g. production site, head offices, remote offices, shops, in order to share
computer resources
2 . Virtual Private Network (VPN)
Type of private network built over public infrastructure . By using a
number of security mechanisme , including encryption, a VPN allows user
to securely access a network from different locations using a public telecommunication
network, most frequently the internet.
Advantages
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Disadvantages
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- Messages can be sent very quickly to anyone else on the network
- Sharing data or information is private and confidential.These are similar to those of LAN's except the scale of sharing etc, become far greater and can be worldwide
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- Again these are similar to those of LAN's except that issues such as security become even more important as potential heckers could break into a computer system from anywhere in the world rather than having to physically be in abuilding
- Encryption of secure darta such as financial transaction is necessary because it is even easier to capture data.
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