demo_Basics of networking final ppt.pptx
- 2. Data Vs Information Data Information
- 7. Introduction • Computer networks Meaning : Interconnected Collection of Autonomous Computers • A Network is a group of devices connected with one another. Example: Cable Network, Telephone Network • A computer network consists of two or more computers that are linked in order to share resources such as printers, exchange files and allow communication. • The Internet is an example of a computer network that spreads all across the world.
- 9. NEED FOR COMPUTER NETWORKS • Resource Sharing: • All computers in a network can share resources such as printers, fax machines, modems and scanners. • File Sharing and Remote Database Access: • A computer network allows sharing of files and access to remote database. • Ease of Communication: • Computer networks allow people to communicate through emails and instant messaging facilities.
- 10. Computer Network • Wired Network ---> Ex: Telephone System • Wireless Network ---> Ex: Cellular Network (Mobile Phone System)
- 11. Types of Networking The following are the types of networks based on the geographical area covered or scale of the network. – Personal Area Network (PAN) – Local Area Network (LAN) – Metropolitian Area Network (MAN) – Wide Area Network (WAN)
- 12. Personal Area Network (PAN) My Personal Area Network • The smallest computer network. • Personal devices may be connected through Bluetooth or other infra-red enabled devices. • It has a connectivity range of upto 10 metres.
- 13. Local Area Network (LAN) • It is a computer network that interconnects computers within a limited area such as a office, school, laboratory, ... • It is inexpensive. • Transfer of data is fast.
- 14. Metropolitan Area Network (MAN) MAN is a computer network that connects computers within a town, city or multiple cities. A MAN is made up of interconnected LANs.
- 15. Wide Area Network(WAN) • WAN covers a large geographical area such as country or continent. • A WAN is made up of interconnected MANs. • The examples of WAN are Internet connections and cellular phone connections.
- 16. MAN
- 17. RECAPS • When two or more computers are connected with each other through a cable and they share their data and information. This connection is known as networking. • Internet is an example of Computer Network. • Advantanges of Computer Network : • Information Sharing • Resource Sharing • Wired and Wireless networking are available to use. • Computer networks can be categorized depending on its size and number of devices used.