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 Is a network of networks  Began in 1969 as ARPANET (Advanced Research Projects Agency Network)  No central authority and thus impossible to state the precise size  The Internet is not free just because you do not pay for it

 A subset of the Internet consisting of all computers with hypertext or hypermedia documents  These documents contain references (links) to other documents which may be on a different computer anywhere in the world  Began in 1991 at the European Particle Physics Laboratory (CERN) in Switzerland

 A server  Stores hypermedia documents  Furnishes documents upon request  A client  Requests hypermedia documents  Displays hypermedia documents  A browser  Enables clients to display every document from every server

 At Work or School  Via a Local Area Network (LAN)  At Home  Traditional Modem (56KB)  Cable Modem  DSL Modem  WIFI

Means of access, HyperText Transfer Protocol Internet Address (Web site) Document Path (Directory or Folder)

 HTTP – HyperText Transfer Protocol is used to transmit Web documents  HTTPS – Secure protocol for confidential transactions  HTML – Hypertext Markup Language is the language for all Web Documents  ISP – Internet Service Provider

 Use the Search button on the Internet Explorer Toolbar  Try multiple search engines on one query  Be aware of logical operators - AND, OR, and NOT  Search on a concept; e.g., “first ladies” rather than “Eleanor Roosevelt”  Set Bookmarks/Favorites

 Commerce is the exchange of goods and services  Buyer and seller  Products and suppliers  A place to “meet”  Marketing to attract the buyer  Accept and process the order  All of these elements are present in e-commerce and traditional commerce

 For the Seller:  Open 24/7  Shoppers from anywhere  Virtual inventory is cheaper and extensive  Lower transaction costs  Target your customers  For the Buyer:  Open 24/7  Never leave home  Easy to view and explore product line  Comparison shop  Web site knows you

 Secure transactions  Https protocol  Encryption  Privacy  A cookie is a small file written to your disk each time you visit a site  Websites download cookies to personalize your experience on their site