The document provides a history and overview of the internet. It discusses how the internet originated in education and military fields in the 1960s as ARPANET and has since grown into a global network of computers. It describes some of the key internet components like email, the World Wide Web, file transfer protocol, and gopher. The World Wide Web was developed by Tim Berners-Lee in 1990 as a system of interconnected documents accessed through hyperlinks. The infrastructure includes clients connecting through internet service providers to web servers hosted by companies.

1. Internet Past, Present, and Future

2. Internet Internet (n.) : A global network of computers. Always capitalized Intranet (n.) : A small network (2-1000 computers) Inside a company GCS Lab contains an intranet

3. History Internet is close to 40 years old Originally used in education and military fields Early form of the Internet was known as ARPANET. (1969)

5. Internet Components Email – Electronic Mail WWW – World Wide Web IRC – Internet Relay Chat FTP – File Transfer Protocol Gopher

6. Gopher Collection of text documents Organized in hierarchy menu Designed at The University of Minnesota

7. WWW System of retrieving information through the use of interconnected documents through the use of hyperlinks. Developed by Tim Berners-Lee - 1990

9. Internet Infrastructure BACKBONE Clients require software that requests the web page: Browsers: Internet Explorer, Netscape Navigator, Mozilla Firefox Client ISP AOL RoadRunner BellSouth Juno 56k Modem DSL Cable Modem Web Server Web Server Web Server Web Server Web Server ESPN.COM CNN.COM Google.com Yahoo.com