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  1. 1. Web Programming Lecture # 01
  2. 2. Internet <ul><li>Network of networks that consists of millions of private & public, academic, business and Government networks. </li></ul>
  3. 3. Web <ul><li>Is a distributed information system </li></ul><ul><li>Information in the web is connected by Hyperlinks. </li></ul>
  4. 4. World Wide Web <ul><li>Is a system of interlinked hypertext documents documents via the internet. </li></ul>
  5. 5. Hypertext <ul><li>Is a text, displayed on a computer with references to other text that the reader can immediately access, usually by a mouse click or key press sequence. OR </li></ul><ul><li>Or a method of presenting information where selected word in online text can be expanded into more information </li></ul>
  6. 6. Web Page <ul><li>Is a document on the internet </li></ul><ul><li>Web Site is a collection of web pages. </li></ul>
  7. 7. Web Browser <ul><li>Is a computer program tou use to retrieve and view web pages. E.g. IE, NetScape </li></ul>
  8. 8. Web Server <ul><li>A computer program that is responsible for accepting HTTP requests from clients </li></ul><ul><li>The computer on which such software runs is known as web server </li></ul>
  9. 9. Protocol <ul><li>is a set of rules which is used by computers to communicate with each other across a network. A protocol is a convention or standard that controls or enables the connection, communication , and data transfer between computing endpoints. </li></ul>
  10. 10. HTTP <ul><li>hypertext transfer protocol: a protocol (utilizing TCP) to transfer hypertext requests and information between servers and browsers </li></ul>
  11. 11. TCP/IP <ul><li>TCP (Transmission Control Protocol) operates at a higher level, concerned only with the two end systems, for example a Web browser and a Web server. </li></ul><ul><li>Whereas IP(Internet Protocol) handles lower-level transmissions from computer to computer as a message makes its way across the Interne </li></ul>