Unit_2_Lesson_IV.doc

Unit II: Audio/Visual Media Lesson IV: Internet Architecture of the Internet Hosts/Servers Those computers that contain the actual website Access Providers ISPs, DSL, etc. Internet Addresses Domain Names Browsers Search Engines Internet Addresses User ID Domain Uniform Source Locator (URL) Hypertext Transfer Protocol (http) Hypertext Markup Language (html) Java Economics of the Internet Employment Patterns Network Engineers- People who design and build the systems that make up the internet Network Managers- Provide day-to-day maintenance of local systems and intranets Webmasters- Maintain either content or systems for large web sites **Knowledge Workers People who use the internet and other information sources in their work (journalists, librarians, pretty much everybody) Economics of the Internet Revenue Sources E-Commerce Selling of goods and services online Amazon.com, eBay.com, etc. Websites will sell leads through links Advertising Only those interested will click Pay flat rate, then per click Very controversial- pop ups, animation, online commercials, spam Spyware-Programs that track Internet user?s activities and report them back to advertisers Economics of the Internet Paid Content Least successful revenue source Databases Magazine and newspaper content Distance Learning Online Matchmaking Etc. The Long Tail Takes advantage of the niche market Online Dangers and Nuisances Hacker Attacks Gaining illegal access to computer networks or files Sometimes done for money, sometimes done to be a jerk Phishing Sending out fake, but realistic looking, e-mails hoping to gain sensitive information from the e-mail reader Spam Unsolicited e-mail messages Controversies Net Neutrality Municipal Wi-Fi Censorship Reliability of Information Attribution Authority Objectivity Currency