Internet and Networking Terms课件.pptVIP

Intro to Computer Networks Intro to Computer Networks Internet and Networking Terms Bob Bradley The University of Tennessee at Martin 精品文档 The Internet The global collection of connected networks that use TCP/IP protocols. The Internet was created from research done by the U.S. Department of Defense Advanced Research Projects Agency (ARPA) in the late 1960s – early 1970s. The Internet became a commercial success in the 1990s. No one group or country owns or “runs” the Internet, because it is a collection of networks. 精品文档 Growth of the Internet The Internet has experienced exponential growth over two decades. It has been doubling in size every nine to twelve months. (only recently has this growth rate started to slow) In 2001, there were over 100 Million computers attached to the Internet. In 2002, there were over 160 Million computer and nearly 800 Million Internet users. In 2003, the number is approaching 200 Million computers. Click here to see the real-time Internet growth charts / (may not work) See Internet growth at: /ds/ 精品文档 精品文档 Updated: 精品文档 World Wide Web The hypermedia system used on the Internet in which a page of information can contain text, images, audio or video clips, and references to other pages. The main protocol of the Web is HTTP and the main information format is HTML. Information on the web is identified by a URL. Invented by Dr. Tim Berners-Lee who donated his work to the world for free!!!! /People/Berners-Lee/Overview.html 精品文档 URL (Uniform Resource Locator) A syntactic form used to identify a page of information on the World Wide Web. Example: /~bbradleyConsists of a protocol :// hostname / page name URLs are universal and unique. The URL to a page can be used to identify and access it from anywhere in the world on the Internet. Can be on T-Shirts, on bill-boards, in magazines. 精品文档 TCP/IP Transmission Control Protocol / Internet Protocol The protocol suite used in the Internet. Allows all the computers on the internet to co