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The Internet and the World Wide Web

The Internet and the World Wide Web

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The Internet and the World Wide Web

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  1. The Internet and the World Wide Web Renee Roland, Dan Waters, Amelia Wright

  2. The Internet • Internet (aka the Net) • Usage • More than half a billion users • Most common uses • World Wide Web and e-mail

  3. History • 1969: ARPANET • Linked scientists and academic researchers • 1986: NSFnet connected to ARPANET • Together the two became the Internet • Until 1995 • NSFnet handled most traffic • 1995: terminated its network and returned to a research network

  4. The Internet Today • Public, Cooperative, and Independent • World Wide Web Consortium sets standards • Internet 2 • Focus is on improving current internet • Develops and tests advanced technologies • Professionals able to communicate over long distances

  5. Connecting • Dial-up • Modem and telephone line • Cable modem • Through cable television network • DSL and ISDN • Copper telephone lines

  6. Accessing • Access provider • Free or for a fee • Internet Service Provider (ISP) • Regional or national access • Online Service Provider (OSP) • Internet access plus member only features • Wireless Internet Service Provider (WISP) • Wireless modems and mobile devices

  7. IP Address • IP Address • Unique number, identifies each connected computer • Domain name • Text version of IP Address • DNS server • Translates domain name into IP address

  8. World Wide Web Components • WWW • Worldwide collection of electronic documents • Web page • Each single document • Web address (URL) • Unique address for each web page

  9. Web Browser • Web Browser • Allows users to access and view web pages • Web Server • Computer that delivers web pages to your computer • Link • Built-in connection to related web page

  10. Searching for Information • Search engine • Program that finds web pages and web sites • Search text • Typed keywords in search engine’s text box • Hits • Web pages that contain the search text • Web Site • Collection of related web pages and associated items

  11. Types of Web Sites • Portal • Offers variety of services from one location • News • Contains newsworthy material • Informational • Contains factual information • Business/Marketing • Promotes or sells products or services

  12. Types of Web Sites Cont. • Educational • Offers avenues for formal and informal teaching • Entertainment • Interactive and engaging environment • Advocacy • Describes cause, opinion, or idea • Personal • Maintained by private individual or family

  13. Evaluating a Web Site • Not all information is true and accurate! • What to look for: • Affiliation • Audience • Authority • Content • Currency • Design • objectivity

  14. Web Page Multimedia • Multimedia • Combines text with graphics, animation, audio, video, and/or virtual reality • Graphic • Digital representation of non-text information • Ex: drawing, chart, photograph • Animation • Appearance of motion

  15. Web Page Multimedia Cont. • Audio • Music, speech, or any sound • Video • Full-motion images • Virtual Reality • Use of computers to simulate real or imagined environment • 3D

  16. Downloading Music • Go to a music website • Search for, select, and pay for the music • Download the music to your hard disk • Listen to the music from your hard disk

  17. Plug-ins • Plug-in: extends capability of a browser • Popular Plug-ins: • Acrobat Reader • Flash Player • QuickTime • RealOne Player • Shockwave Player • Windows Media Player

  18. Types of E-Commerce • E-Commerce • Business transaction over an electronic network • Business to Consumer • Sale of goods and services to general public • Consumer to Consumer • One consumer sells directly to another • Ex: E-bay • Business to Business • Businesses exchange goods

  19. Web Page Communication • E-mail • transmission of messages and files via the computer network • FTP ( File Transfer Protocol) • An Internet standard that permits file uploading and downloading with other computers • Newsgroup • an online area where users have written about a certain subject • Message Board • a popular Web-based type of discussion group

  20. Communication Continued • Mailing List • a group of e-mail names and addresses given a single name so all can receive the message • Chat Rooms • A location on the internet server that permits users to chat or conduct real-time typed conversations • Instant Messaging • Real-time internet communications service that notifies you when one or more people are online

  21. Netiquette • Netiquette or Internet Etiquette • a code of acceptable behaviors to be followed on the Internet. • Rules of Netiquette • Keep messages short • Be polite • Do not assume material is accurate or up to date • Never read someone’s private E-mail

  22. What is Web Publishing? • Web publishing is the development and maintenance of Web Pages. • Webmaster or Web developer maintains a Web using software products • Five major steps to web publishing

  23. Plan a Website • Identify the purpose of the website • Characteristics of the people who would want to visit the website • Determine ways to differentiate your website from others

  24. Analyze and Design a Web Site • Determine specific way to meet the goals identified in planning • Design layout • Text, graphics, audio, video, and virtual reality • Obtain required hardware