Chapter 2 The Internet and World Wide Web

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Chapter 2The Internet andWorld Wide Web
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THE INTERNET

• Worldwide group of connected networks that allow
  public access to information and services
• Goal to allow scientists at different locations
  to share information
• Goal to function even if part of the network
  were disabled
• History goes back to 1969
• No single organization owns or controls

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HOW THE INTERNET WORKS

• Internet Service Providers and Online Services
• Have permanent connections to the Internet
• Provide temporary connections to individuals and
  companies for a fee
• Regional and national ISPs
• Online Service Providers offer members only areas
  (Ex AOL, MSN)

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HOW THE INTERNET WORKS

• Connecting to the Internet
• Slow-speed connection
• Dial-up access using standard phone line
• Must reconnect each time you log on
• Slow but inexpensive
• Home or small business
• High-speed connection
• Cable modem, DSL
• Connection is always on
• Fast, but more expensive
• Business or school network connected to the
  Internet

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HOW THE INTERNET WORKS

• Internet Addresses
• IP (Internet protocol) address
• Numeric address 216.19.113.34
• Domain name
• Text address ccri.edu
• Domain name system (DNS)
• Domain name servers

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THE WORLD WIDE WEB

• Started in 1991
• Web page
• Hyperlinks (links)
• How to recognize them
• Collection of hyperlinks is the WWW

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THE WORLD WIDE WEB

• Web Browsers
• Netscape and Internet Explorer
• Home page
• Navigation buttons
• Bookmarks / Favorites
• History list
• Downloading

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THE WORLD WIDE WEB

• Uniform Resource Locator (URL)

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THE WORLD WIDE WEB

• Search Engine
• Program used to find Web sites and Web pages by
  entering search text
• Helps find information on the Web
• http//www.google.com
• http//www.yahoo.com
• http//www.askjeeves.com

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THE WORLD WIDE WEB

• Commonly Used Search Engines

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THE WORLD WIDE WEB

• What are the eight types of Web sites?
• Portal Web site
• Excite
• News Web site
• Providence Journal
• Informational Web site
• Bureau of the Census

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THE WORLD WIDE WEB

• What are the eight types of Web sites?
• Business/Marketing Web site
• LL Bean
• Educational
• WebCT
• Entertainment
• Wheel of Fortune

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THE WORLD WIDE WEB

• What are the eight types of Web sites?
• Advocacy Web site
• Democratic National Committee
• Republican National Committee
• Personal Web site
• Kay Johnson's site

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THE WORLD WIDE WEB

• Multimedia on the Web
• Multimedia web pages incorporate color, sound,
  motion, and graphics with text
• Plug-ins run multimedia elements within the
  browser window

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THE WORLD WIDE WEB

• Multimedia on the Web
• Graphics
• Used to enhance the text-based Internet
• Graphics formats JPEG, GIF
• Clip Art available through Yahoo's Directory
• Thumbnails
• Weather Station
• EBay

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THE WORLD WIDE WEB

• Multimedia on the Web
• Animation
• Animated GIF
• www.webdeveloper.com/animations
• Marquee
• www.nyse.com

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THE WORLD WIDE WEB

• Multimedia on the Web
• Audio
• Music
• MP3
• Speech
• WAV and AU formats
• Streaming audio
• windowsMedia.com

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THE WORLD WIDE WEB

• Multimedia on the Web
• Video
• Full-motion images
• Streaming video
• Movie trailers
• Live news
• Online movie
• MPEG format
• Web cam
• http//www.warmwinds.com
• http//www.camcentral.com
• Internet videoconferences

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ELECTRONIC COMMERCE

• Conducting business activities online
• Business to consumer (B2C)
• Consumer to consumer (C2C)
• Business to business (B2B)
• Most popular
• Investing
• Shopping

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WEB PUBLISHING

• Personal Web pages
• Hypertext markup language (HTML)
• Tags
• Web page created with HTML
• Web authoring software
• Word processing packages
• Sophisticated authoring packages

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OTHER INTERNET SERVICES

• Telnet

• Log into remote computers
• Access remote databases, directories, and library
  catalogs

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OTHER INTERNET SERVICES

• Mailing Lists
• Group of e-mail names and addresses given a
  single name
• Subscribing and unsubscribing
• LISTSERVs
• AAWCC ListServ

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OTHER INTERNET SERVICES

• Chat Rooms
• Real-time conversation
• Channels
• Chat clients
• IRC (Internet relay chat)
• Microsoft Chat

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OTHER INTERNET SERVICES

• Instant Messaging (IM)
• Notifies you when one of your buddies is online
• Allows you to exchange messages or files or join
  a private chat with them

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NETIQUETTE

• Internet etiquette
• The code of acceptable behaviors users should
  follow while on the Internet

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Chapter 2 Complete