Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Internet Technology I محمد البرواني.د Project Number 3 • Computer crimes in the cybernet • Privacy in the cybernet Objectives • Briefly describe the history of the Internet • Describe what is needed to get on the Internet • Describe generally what an Internet service provider does • Describe the functions of a browser • Describe how to search the Internet Objectives • List and describe the non-Web services of the Internet • Describe what an intranet is and how a business uses it Historical Overview • 1969 : Advanced Research Project Agency (ARPANet) • • • • • – Connected computers at four locations (Universities) 1972: E-mail capability added by BBN company Telnet commercial use ARPAnet connects to European Universities Late 70’s : start of Newsgroup (USENET) National Science Foundation connected its large network, NSFnet to ARPANET in 1986 – Resulting network became known as the Internet • BITNET (Because Its Time Network) • CSNET (Computer Science Network) • These Nets form what is known now by INTERNET • Beginning of 1990 : Gopher - Menu driven user interface to explore internet • World Wide Web: WWW • Companies to provide net services: ISP • Companies produced Browsers • Companies produced Search Engines … Growth of Internet • Growth in host computers – 72 million in 2000 – 162 million in 2002 • Growth in users worldwide – 567 million in 2002 – 780 million in 2003 Numeric Computer IP Address Domain and Host Names • __________ . _______. _____________ • sub Domain Domain Top level Domain Examples • www.ibm.com • www.sales.ibm.com • www.ksu.edu.sa Domain Name Server (DNS) • Translates Host (Domain) name to Numeric IP • address Example: – www.yahoo.com – 201.10.12.125 Web Sites • A group of Hypertext documents stored in a web server – Layout – Content – Links – Navigation تصميم محتوى روابط tools أدوات االبحار في الويب • URL (Uniform Resource Locator) • http (Hyper Text Transfer Protocol) • HTML (Hyper Text Markup Language) Web Sites Types • Private Sites • Organizational Sites • Portal Sites Web Pages Types • Home page • Content pages