Internet programming computers presentation.pptx

fwef

1. Internet What is Internet ? Internet is a huge collection of a computer all over the world that are connected to one another .

2. History of Internet Internet was started in 1960’s during the cold war of Russia & America. During cold war, Russia launched sputnik satellite and America developed a network. Its name was *ARPANET.* The internet has its root in the ARPANET system of the Advanced Research Project Agency of U.S. ARPANET is known as the forefather of internet.

3. Basic service od internet Electronic mail FTP Telnet Usenet news The World Wide Web

4. Electronic mail is also known as e-mail in short t enables to send and receive a mail (message). It is Faster than paper mail. Images, audio, video can be sent along with text.

5. File transfer protocol (FTP) It enables users to move a file from one computer to another computer. A file may contain: Text document Image Artwork Movie Sound Software

6. T elnet It enables users to login to another computer on internet from their local computer .. This action is called ‘remote login’. It stands for Teletype network .

7. Usenet news The Usenet is a huge worldwide collection of discussion groups. Usenet news service enables a group of internet users to exchange their views, ideas, information on some common topic of internet. A newsgroup is like a large notice board accessible to all members belonging to the group.

8. The world wide web It is a most popular method of accessing internet. It uses a concept called hypertext. Hypertext documents on internet are known as web pages. Web pages are created by using a special language called Hyper Text Markup Language (html)

9. Some uses of Internet  To access information,news,research and educational material. To conduct bussiness . Sources of internet such as online games magazines etc. To meet & talk with people around the world in the form of groups or chatroom . Send messages & receive messages from other connected users.

10. Features of internet Simplicity Economy Flexibility of communications Speed and availability Accessibility Resource sharing Security …

11. Characteristic of Internet

12. What is Network? 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.

13. Types of network It Depending upon the geographical area covered by a network, it is classified as: Local Area Network (LAN) Metropolitan Area Network (MAN) Wide Area Network (WAN) Personal Area Network (PAN )

14. LAN A LAN is a network that is used for communicating among computer devices, usually within an office building or home . It Is limited in size, typically spanning a few hundred meters, and no more than a mile . . LAN’s can be either wired or wireless. Twisted pair, coax or fiber optic cable can be used in wired LAN’s. Has lower cost compared to MAN’s or WAN’sA

15. MAN A Network that is bigger than a LAN and smaller than a WAN. MAN is the interconnection of LANs spread around a city with a high-speed connection. A cable TV network, or a local Wi-Fi network provider in a city, Government Offices or corporate sectors connecting multiple offices LAN may be considered as examples. MAN is a high-speed network as compared to WAN.

16. WAN It is the network extended over a large geographical areas and is the interconnection of several LANs and MANs. • To cover great distances, WANs may transmit data over leased high-speed phone lines or wireless links such as satellites . It may span City, Country, Continent, or even the World. The world's most popular WAN is the Internet.

17. PAN It is the network centered on an individual’s workspace. Electronic gadgets like Computers, smartphones, Tablets, Headphones, Earbuds , etc. are connected. It uses low powered wireless connectivity for short-distance communication. It uses connection techniques like Wireless USB, IrDA, Bluetooth, ZigBee , etc.

18. Modem and Router