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Introduction to the Internet: Explore the World Wide Web

Dive into the Internet's history, structure, and key terms like HTTP, HTTPS, and HTML. Learn about the World Wide Web, client/server model, and ways of connecting to the Internet. Discover how to navigate URLs, conduct effective searches, and delve into the realm of e-commerce with insights on security and privacy.

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Introduction to the Internet: Explore the World Wide Web

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  1. Introduction to the Internet Your Name Goes Here

  2. The Internet • A network of networks • Began in 1969 as ARPAnet (Advanced Research Projects Agency) • No central authority and thus impossible to state the precise size • The Internet is not free just because you do not pay for it

  3. The World Wide Web • 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

  4. A Client/Server Model • A server (Web server or Web site) is any computer that stores hypermedia documents and furnishes them upon request • Aclient is any computer that requests, then displays hypermedia documents • Every client must be able to display every document from every server and does so through a browser (e.g., Netscape or Internet Explorer)

  5. Acronyms Abound • 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

  6. Connecting to the Internet • At Work or School • Via a Local Area Network • At Home • Traditional Modem (56KB) • Cable Modem • DSL Modem

  7. http://www.annex.com/southwest/museum.htm Document Path (Directory or Folder) Internet Address (Web site) Means of access, HyperText Transfer Protocol Uniform Resource Locator (URL)

  8. URL Format • You can guess at the URL using the general form of an “www.company.com” • Examples: • www.microsoft.com • www.nba.com • www.dell.com • www.whitehouse.gov • www.miami.edu

  9. Suggestions for Searching • 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

  10. A Good Place to Start

  11. E-commerce • 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

  12. 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 Advantages of E-commerce

  13. Security and Privacy • Secure transactions • Https protocol • Encryption • Privacy • Cookie is a small file written to your disk each time you visit a site • Problem is when one site can read many cookies; e.g. Double Click.com

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