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3
Brief history of the Internet
1969 The Defense Advanced Research Projects developed ARPANET, the precursor of the Internet
1971 Ray Tomlison invents e-mail
1979 USENET newsgroups created at Duke University and the University of North Carolina
1984 Domain Name System (DNS) established
1991 Tim Berners-Lee creates the World Wide Web
1994 First online shopping mall, first spam email, first pizza ordered online, first advertisement banner
2000 A major denial of service attack brings down websites such as Yahoo!, Amazon.com, and eBay
2002 Denial of service attack knocks out 8/15 root DNS servers
Make sure you know what DNS is used for.
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Webserver needs:- Network (or Server) Operating System- TCP/IP- Domain name (e.g. eiu.edu)- Internet access - IP Address (e.g. 139.67.8.3)
User PC needs:- Workstation Operating System- TCP/IP- Web browser (e.g. Internet Explorer)- Internet access (e.g. thru an ISP)- IP Address (e.g. 128.150.50.9)
Accessing the Internet (www)
NetworkWeb
Browser
Packet
Router
Packet
Route
WebserverSoftware
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Internet applications/services E-Mail File transfers Instant messaging (IM) Newsgroups Streaming audio and video Internet telephony World Wide Web (WWW) Portal
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Portal A portal is
A Web site that offers a broad array of resources and services; such as
email newsgroup Serach engines Online shopping malls
Examples of portal: yahoo!, msn, aol
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Make sure you can … Answer questions like those in Quiz 2
Note: Quiz 2 is posted to the Review section
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Summary Questions
Refers to the slide # in class posted notes
Book Notes
1) (a) Name some Internet applications/services (b) What is Instant Messaging? (c) What is a newsgroup?
9,14, 15
2) (a) What does a user PC needs for accessing the World Wide Web? (b) What is needed on the webserver side?
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3) Name some Internet connection options available for residential users and businesses.
5-6
4) What is meant by podcasting? 16
5) (a) What is an intranet? (b) an extranet? (c) a portal 18,19
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Best way to prepare Review the ppt notes or chapter 7 and 12 in
the course textbook to make sure you can answer the following questions Quiz 3 questions posted to the Review section of
the course web site).
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