Lecture "Web Technology and online services: Lesson 1 - Introduction" provide students with knowledge about: Internet, Web; HTTP; URL; Web Browser; Web Application; Web Application Architecture; Web Developer Roadmap. Please refer to the detailed content of the lecture! | Introduction to Web Technologies and e-Services 1 Lecture contents 1. Internet Web 2. HTTP 3. URL 4. Web Browser 5. Web Application 6. Web Application Architecture 7. Web Developer Roadmap 2 Reasonable Questions What is the World Wide Web Is it the same thing as the Internet Who invented it How old is it How does it work What kinds of things can it do What does it have to do with programming Web Internet Internet a physical network connecting millions of computers using the same protocols for sharing transmitting information TCP IP in reality the Internet is a network of smaller networks World Wide Web a collection of interlinked multimedia documents that are stored on the Internet and accessed using a common protocol HTTP Key distinction Internet is hardware Web is software along with data documents and other media Many other Internet-based applications exist . email telnet ftp usenet instant messaging services file-sharing services A Very Brief History of the Internet The idea of a long-distance computer network traces back to early 60 s Joseph Licklider at . a time-sharing network of computers Paul Baran at Rand tasked with designing a survivable communications system that could maintain communication between end points even after damage from a nuclear attack Donald Davies at National Physics Laboratory in . In particular the US Department of Defense was interested in the development of distributed decentralized networks survivability . network still functions despite a local attack fault-tolerance . network still functions despite local failure contrast with phone system electrical system which are highly centralized services The Internet In 1969 Advanced Research Project Agency funded the ARPANET Connected computers at UC Los Angeles UC Santa Barbara Stanford Research Institute and University of Utah Allowed researchers to share data communicate 56Kb sec communication lines vs. 110 b sec over phone lines Technical origin One of earliest .
