It covers everything about computer networls like its types, importance, various network topologies, etc.

1. PRESENTED BY:
Shubham Kushwaha
Saurabh Chaudhary
Subhash Kumar
Karan verma
Mohit kumar
Amit kumar

2. Topics to be covered
• What is Network
• What is Networking
• Definition of Computer Network
• Devices use to connect Network
• Importance Of Computer Networks
• Types of Networks
• Difference between Networks
• Network topology
• Types Of Network Topology
• Conclusion
• References

3. What is ‘Network’
• A network consists of two or more computers
linked in order to share resources, exchange
files, or allow electronic communications.
• Network is a group of computer systems and
other computing hardware devices linked
together through communication channels to
facilitate communication and resource-sharing
among a wide range of users.

4. What is 'Networking'
• Networking is a process that fosters the
exchange of information and ideas among
individuals or groups that share common
interests.
• Examples:
– Social Networking
– Business Networking
– Online Networking
– Computer Networking
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5. Definition
• Computer networking is the engineering discipline
concerned with the communication between
computer systems or devices.
• A computer network is any set of computers or
devices connected to each other with the ability to
exchange data.

6. Devices used to Connect Network
• Routers
• Gateways
• Repeaters
• Bridges
• Modem ,etc.

7. Importance Of Computer Networks
• Sharing of devices such as
printer and scanner.
• Sharing of program ,software
etc.
• Sharing of files.
• Sharing of data.
• Sharing of information.
• Sharing o single high speed
internet connection.
• Better communication using
internet services such as email,
mailing list, etc.

8. Types of Networks
• Local Area Networks (LAN)
• Metropolitan Area Networks (MAN)
• Wide Area Networks (WAN)
• Personal Area Networks (PAN)
• Campus Networks
• Enterprise Private Networks
• Backbone Networks (BBN)

9. Local Area Network (LAN)
A LAN is a network that is used for communicating among
computer devices, usually within an office building or home.
 Very fast, with speeds from 10 MB/s to 10 GB/s.
 Requires little wiring, typically a single cable connecting
to each device.
 Relatively Cheap.

10. Metropolitan Area Network
(MAN)
 It is a large computer network that usually spans a
city or a large campus.
 It is optimized for a larger geographical area than a
LAN
 It is a high speed network to allow sharing of
regional resources and covers an area of between
5 and 50 km diameter.

11. Wide Area Network (WAN)
 It covers a very large geographic area like –
 country, continent or even whole of the world.
 It may transmit data over leased high-speed phone lines
or wireless links – as satellites.
 Different entities use this networks to relay data to staff,
students, clients, buyers, and suppliers from various
locations across the world.

12. Personal Area Network (PAN)
 This type of network is created mainly for an
individual.
 It is used for communication among several devices
such as cell phones, laptops or smart-phones.
 This type of network may be wired or wireless.
 It generally covers a range of up to 10 meters.

13. Campus Network
• A campus network is a set of interconnected LANs.
• It serves a corporation, government agency,
university, or similar organization.

14. Enterprise Private Network
A computer network built by a business to
interconnect its various company sites ( like
- production sites, offices and shops) in
order to share computer resources.

15. Backbone Network
• A part of computer network
infrastructure that interconnect
various pieces of network.
• It provides a path for the
exchange of information
between different LANs or sub
networks.
• A backbone can tie together
diverse networks in the same
building, in different buildings
in a campus environment or
over wide areas.

16. Difference

17. Network Topology
• Network topology is the arrangement of the various
elements (links, nodes, etc.) of a computer network.
Essentially, it is the topological structure of a
network and may be depicted physically or logically.
• It is the configuration of cables, computers and
other peripherals.
•Typical network configurations include the bus
topology, mesh topology, ring topology, star topology,
tree topology and hybrid topology.

18. Bus Topology
• Bus topology is a network type in which
every computer and network device is
connected to single cable.
• It transmits data only in one direction.
• Every device is connected to a single cable.

19. Ring Topology
• It is called ring topology because it forms a
ring as each computer is connected to another
computer, with the last one connected to the
first.
• Data is transferred in a sequential manner
that is bit by bit.

20. Star Topology
• In this type of topology all the computers are
connected to a single hub through a cable.
This hub is the central node and all others
nodes are connected to the central node.
• Hub acts as a repeater for data flow.

21. Mesh Topology
• It is a point to point connection to other
nodes or devices. All the network nodes are
connected to each other.

22. Tree Topology
• It has a root node and all other nodes are
connected to it forming a hierarchy. It is
also called hierarchical topology.
• It should at least have three levels to the
hierarchy.
• Used in Wide Area Network.

23. Conclusion
Computer network is a very large area. And generally
we want a network which have a high speed of
transmission and very less of error while
communicating. Computer network wants speed,
accuracy, adequacy and security. These are all future
aspects of computer network which we will have to
consider.

24. References
• Basic Computer Application
–by Vishal khasgiwala & Sumitra Jain
• Foundation of Information Technology
• www.wikipedia.com
• www.slideshare.com
• www.scribd.com
• www.google.com

25. THANK YOU