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World wide web

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World wide web

  1. 1. It’s networking… World Wide Web
  2. 2. Index What is internet History of internet What are some services found on the Internet Who controls internet What is world wide web Portals History of world wide web Search engines Web browser Hyperlinks
  3. 3. Difficult to imagine ? World Before internet
  4. 4. A global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols. What is INTERNET???
  5. 5. History of the Internet How did the Internet originate? Goal: To function if part of network were disabled Became functional September 1969 ARPANET Networking project by Pentagon’s Advanced Research Projects Agency (ARPA)Goal: To allow scientists at different locations to share information
  6. 6. History of the Internet How has the Internet grown? p. 9 Today More than 500 million host nodes 1984 More than 1,000 host nodes 1969 Four host nodes
  7. 7. What are some services found on the Internet?
  8. 8. • Email • E-Commerce • Social Media • Unlimited information • Making presentations(Just like this one !) • World Wide Web(WWW) Some of the Services
  9. 9. World Wide Web Consortium (W3C)  Oversees research, sets standards and guidelines  Mission is to contribute to the growth of the Web  Nearly 400 organizations around the world are members of the W3C Who controls the Internet?  No one—cit is a public, cooperative, and independent network  Several organizations set standards
  10. 10. A worldwide collection of electronic documents Each electronic document is called a Web page Also called the Web Can contain text, graphics, audio, video, and built-in connections A Web site is a collection of related Web pages What is the World Wide Web (WWW)?
  11. 11. The term WWW refers to the World Wide Web or simply the Web. The World Wide Web consists of all the public Web sites connected to the Internet worldwide, including the client devices that access Web content. The WWW is just one of many applications of the Internet and computer What is the World Wide Web (WWW)?
  12. 12. • Founded by - Tim Berners-Lee at the European Laboratory for Particle Physics(CERN). • He developed a software application for a hypertext server program which stores documents and makes it available on the internet • Which he named as WORLD WIDE WEB. • Developed To- try to improve the CERN’s research document handling and sharing mechanism. History of WWW
  13. 13. • In 1993, Marc Andreessen wrote a program named ‘mosaic ‘ which could read the documents in hypertext format • Which was later named as “WEB BROWSER” • Because of web browser people could easily access internet. • It was a free software. • “NETSCAPE NAVIGATOR” was the first web browser ,which was based on mosiac. History of WWW
  14. 14. A web portal is most often one specially designed Web page which brings information together from diverse sources in a uniform way. Usually, each information source gets its dedicated area on the page for displaying information. Portals
  15. 15. A program that searches for and identifies items in a database that correspond to keywords or characters specified by the user, used especially for finding particular sites on the World Wide Web. Search engine
  16. 16. • A web server is a program running on a server computer .it consist of the website containing a no. of web pages. • Web pages are designed on a language called HTML. • Each web page can contain text , graphics, sound, video and animation . Web server
  17. 17. • The web server receives request for a web page from a browser program running on the client. • Then it locates that the corresponding page and sends it to the client computer. • In this TCP connection the client sends one request and the server ine response. • This request –response model is governed by a protocol called HYPERTEXT TRASFER PROTOCOL(HTTP). • The most popular web servers are Apache , IIS. Working of web server
  18. 18. A web browser (commonly referred to as a browser) is a software application for retrieving, presenting and traversing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier (URI/URL) and may be a web page, image, video or other piece of content. Web browser
  19. 19. Working of a Web browser Step 1. Click the Web browser program name Step 2. Web browser looks up the home page setting Step 3. The Web browser communicates with the access provider’s server to retrieve the IP address. The IP address is sent to your computer. Step 4. The home page displays in the Web browser
  20. 20. A uniform resource identifier (URI) is a string of characters used to identify a name of a resource. Such identification enables interaction with representations of the resource over a network, typically the World Wide Web, using specific protocols. URI/URL
  21. 21. A hyperlink is a reference to data that the reader can directly follow either by clicking or by hovering. A hyperlink points to a whole document or to a specific element within a document. Hypertext is text with hyperlinks. Hyperlink
  22. 22. Internet vs WWW Internet World Wide Web Estimated year of Origin 1969, though opening of the network to commercial interests began only in 1988 1991 Name of the first version ARPANET NSFnet Comprises Network of Computers, copper wires, fibre-optic cables & wireless networks Files, folders & documents stored in various computers Governed by Internet Protocol Hyper Text Transfer Protocol Dependency This is the base, independent of the World Wide Web It depends on Internet to work Nature Hardware Software
  23. 23. Thank you