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• MAN (Metropolitan Area Network): It is a network of devices connected within a large city, multiple cities and
towns, or a large area with multiple buildings. MAN is bigger than LAN. For example, a bank with branches in
different parts of the same city.
• WAN (Wide Area Network): It is a network of devices with no limitations of geographical area. A system of ATMs
used by a banking organisation covering an entire country can be an example of WAN. The Internet is also one of
the biggest examples of WAN.
What was the original name of the Internet?
Types of Network Architecture
There are two common types of network architectures:
• Client Server Architecture
• Peer to Peer Architecture
Let us discuss these in detail.
Client Server Architecture
The computer that provides services to the other computers connected in a network is called a server. The computer
that sends the request for the services is called a client. It is only through the client the user interacts with the network
server and avails its services. Clients are often situated at workstations or on personal computers. Servers are located
at a different place on the network and are more powerful machines as they are responsible for most of the processing
requirements of the client and the whole network. It is for this reason the architecture of the client computer requesting
the services of the server is known as a client server architecture.
Request
Response
Client Server
Web Applications and Security 345

