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WIDE AREA NETWORK (WAN)
WAN covers a wide geographical area. In other words, it is a group of computers that are separated
by a large distance and tied together. It links different metropolitans and even countries across
national boundaries. The most popular example of WAN is the Internet: a collection of an infinite
number of computers spread across the world.
NETWORK ARCHITECTURE
The network architecture defines the overall design of the computer network. There are two types
of network architectures.
CLIENT-SERVER NETWORK
This is the most efficient network architecture
that consists of two parts: client system and
server system. One computer is designated
as the server and all the other computers Clients Internet
connected into the network are called the
Server
clients. The clients can request services from
the server. This is called the client-server
network. The client does not share any of its resources but requests for the server’s content.
PEER-TO-PEER NETWORK
An alternative to the client-server approach is the peer-to-
peer approach. There are no dedicated servers. All computers
are equal and can share their resources to be used by others
and are therefore known as peers. This network is more cost
effective and required low maintenance and works well in a
small environment.
Tick ( ) if you know this.
▶ A network is defined as a group of devices that are linked together to share information, data
and resources.
▶ The Internet is a collection of an infinite number of computers spread across the world.
TOPOLOGIES
Topology or structure is the layout of the connection formed between computers. The efficiency
and reliability of a network is determined by its structure. In other words, Topology refers to the
geometric arrangement of computers or nodes in a network.
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