Computer Networks and Its Types

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 COMPUTER NETWORKS

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 NETWORKING

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 , e tc.

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