2. Presentation Contents
Introduction
Computer Network
Devices use to connect networks
Type of network
a) LAN
b) MAN
c) WAN
d) Differences
Models of network
a) Client/Server
b) Peer to Peer
c) Differences
Application of networks
References
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3. A network consists of two or more computers
that are linked in order to share resources,
exchange files or allow electronic
communications.
The computers on a network may be linked
through cables, telephone lines, radio waves,
satellites or infrared light beams
Computer Networks
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5. Types of network are:
Local area network (LAN),
Metropolitan area network (MAN)
Wide area network (WAN)
Types of Network
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6. Local Area Network(LAN)
Network in small geographical Area (Room,
Building or a Campus) is called LAN (Local Area
Network)
Typically, connected devices share the
resources of a single processor or server within
a small geographic area .
A local area network may serve as few as two
or three users or as many as thousands of
users.
Local Area Network (LAN)
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8. Wide Area Network(WAN)
The largest network of all network types.
Internet is the largest WAN in the world.
WAN generally covers large distances such as
states, countries or continents.
WAN is a group of MANs or LANs or the mixture
of both networks.
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10. Metropolitan Area Network
A metropolitan area network (MAN) is a network
that interconnects users with computer
resources in a geographic area or region larger
than that covered by even a large local area
network but smaller than the area covered by a
wide area network (WAN).
It is also used to mean the interconnection of
several local area networks by bridging them
with backbone lines
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13. Models of Networking
Client – server model :-
In a client server model
we have one server and
many clients.
A server is a computer
that shares information
and resources with other
computers on a network.
A client can share the
resources of server, but
a server cannot share
the resources on client.
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14. Models of Networking
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Peer to Peer:-
It is a network with all the
nodes acting as both servers
and clients; each computer in
the network is called a peer.
A PC can access files located
on another PC and can also
provide files to other PCs.
All computers in the peer-to-
peer network has equal
responsibilities and capabilities
to use the resources available
on the network.
16. Application of Networks
Resource Sharing
Hardware (computing resources, disks, printers)
Software (application software)
Information Sharing
Easy accessibility from anywhere (files, databases)
Search Capability (WWW)
Communication
Email
Message broadcase
Remote computing
The control of one or more computer systems by
another, which is at a different location
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