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Internet, Intranet, Extranet, Fishing net What they are for? Internet vs. WWW Transmit data and information from one computer to another Internet protocol (IP) allows routing from one network to another Transfer Control Protocol (TCP) used with IP by most systems URL’s WWW- content

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Presentation Transcript

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Internet vs. WWW

  • Transmit data and information from one computer to another

  • Internet protocol (IP) allows routing from one network to another

  • Transfer Control Protocol (TCP) used with IP by most systems

  • URL’s

  • WWW- content


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Language of the Web

  • HTML

  • XML – extensible markup language

  • Applets

  • Java (for applets)



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E-mail

Telnet

FTP

Newsgroups

Chat rooms

Phone

Videoconferencing

Shopping

Entertainment

Auctions

Content streaming (w/o interruptions!)

Instant messaging (on-line conversation)

Internet services


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Other services of the Web

  • Search engines

    • Their purpose

    • Can you name some?

  • Pull vs. push technologies


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Security

  • PW

  • Encryption

  • Firewalls

  • Viruses

  • Anti-Virus SW

  • Call-back

  • Digital signatures

  • Legal protection

  • VPN – Virtual Private Networks




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