The Internet and the World Wide Web

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Chapter 9

• The Internet and the World Wide Web

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Evolution of the Internet

• The Internet is a worldwide collection of
  interconnected networks and is the worlds
  largest network.
• Consists of thousands of interconnected networks
  that are accessed by millions of people daily.
• Used for personal and commercial communications,
  e-commerce, information exchange, and more.

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From ARPANET to Internet2

• ARPANETan experimental government network that
  begin in 1969.
• World Wide Webproposed by Tim Berners-Lee in
  1989.
• Originally only text-based content.
• The release of the graphical Mosaic browser in
  1993 led to graphical content.
• Internet2created to develop and implement
  advanced Internet applications and technologies.

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The Internet Community Today

• Infrastructure companies
• Hardware and software companies
• Government
• Organizations (e.g. Internet Society)

• Users
• Internet service providers (ISPs)
• Internet content providers
• Application service providers (ASPs)
• Web services

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Myths About the Internet

• Myth 1 The Internet is free.
• Myth 2 Someone controls the Internet.
• Myth 3 The Internet and the World Wide Web are
  identical.

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Getting Set Up to Use the Internet

• Type of device
• Desktop, notebook, or tablet PC
• Internet appliance
• Mobile device

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Getting Set Up to Use the Internet, Contd.

• Type of connection and Internet access
• Dial-up connections
• Conventional dial-up
• ISDN

• Direct connections
• T-1 lines
• DSL
• Cable
• Satellite
• Fixed wireless
• Mobile wireless
• Public hot spots

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Getting Set Up to Use the Internet, Contd.

• Selecting an ISP
• Services
• Speed
• Support
• Cost

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Getting Set Up to Use the Internet, Contd.

• Setting up your PC
• Install necessary hardware.
• Install necessary software.
• Select user name, provide billing information,
  select access telephone numbers, etc.

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Searching the Internet

• Search sites
• Search databases and search engines
• Searching with keywords
• Searching with directories
• Metasearch sites
• Natural language search sites

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Search Strategies

• Using phrases (more than one keyword).
• Using Boolean operators (AND, OR, NOT).
• Using multiple search sites.
• Using appropriate keywords, synonyms, variant
  word forms, and wildcards.
• Using field searches.

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Evaluating Search Results

• The quality of a link can be preliminarily
  evaluated by looking at
• Page title and description.
• Company or organization hosting the page.
• Also evaluate
• Source
• Author
• Timeliness
• Accuracy

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Citing Internet Resources

• To avoid plagiarizing, proper citation procedures
  should be used for all Internet content used in a
  paper, book, or on a Web site.

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Beyond Browsing and E-Mail

• Online financial transactions (e-commerce)
• Online security precautions
• Online shopping
• Payment options (e.g. credit card, payment
  service, smart card, conventional payment)
• Online auctions
• Online banking
• Online investing

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Beyond Browsing and E-Mail, Contd.

• Online entertainment
• Online music (Internet radio, downloadable MP3
  files)
• Online TV and videos (interactive TV,
  video-on-demand)
• Online gaming
• E-books

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Beyond Browsing and E-Mail, Contd.

• Online news and research
• News sites
• Reference sites
• Portals
• Product and corporate information
• Government information

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Beyond Browsing and E-Mail, Contd.

• Online education
• Web-based training and distance learning
• Advantages
• Potential disadvantages
• Online testing
• Online writing
• Blogs
• Wikis
• E-portfolios

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Beyond Browsing and E-Mail, Contd.

• Peer-to-peer file sharing
• Sharing resources directly between users, often
  via the Internet.
• Napster issues.
• Current uses of peer-to-peer file sharing (legal
  and illegal).
• Peer-to-Peer Working Group.

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Censorship and Privacy Issues

• Censorship
• Free speech vs. offensive or indecent materials.
• Internet filtering
• Use by individuals, schools, public libraries,
  employers.
• Browser settings.
• Filtering software.

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Censorship and Privacy Issues, Contd.

• Privacy deals with what information about
  individuals is available, how it is used, and by
  whom.
• Web browsing privacy
• Cookies
• Web bugs
• Spyware
• E-mail privacy
• E-mail messages can be encrypted.
• Businesses have the right to monitor e-mail sent
  over company e-mail systems.

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The Future of the Internet

• Likely to be a high-speed optical network with
  unlimited bandwidth.
• Access devices will probably be small and less
  obtrusive possibly built into everyday objects.
• Ever-growing number of day-to-day Internet
  activities.

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Summary

• Evolution of the Internet
• Getting set up to use the Internet
• Searching the Internet
• Beyond browsing and e-mail
• Censorship and privacy issues
• The future of the Internet