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Title:

The Internet

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Internet Origination. ARPANET Networking Project by Pentagon ... Renamed Internet in the Late 1980s. Tim Berners-Lee Proposes World Wide Web In 1989 ... – PowerPoint PPT presentation

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Title: The Internet


1
The Internet
  • An Overview

2
The Internet
  • Worldwide Collection of Networks
  • Links Millions of
  • Businesses
  • Government Agencies
  • Educational Institutions
  • Individuals

3
Internet Services
  • World Wide Web
  • E-mail
  • File Transfer
  • Newsgroups
  • Message Board
  • Chat
  • Instant Messaging

4
History of the Internet
  • Origination
  • Originated as ARPANET in Sept 1969
  • Goals
  • Allow Scientists in Different Places to
    Collaborate
  • Function Even if Part of Network Disabled
  • Renamed Internet in the Late 1980s
  • World Wide Web Proposed In 1989
  • Tim Berners-Lee

5
History of the Internet
  • Control
  • Organizations Responsible for Own Network
  • World Wide Web Consortium (W3C)
  • Tim Berners-Lee, Director
  • Oversees Research
  • Sets Standards Guidelines

6
Internet Mechanics
  • Connection Types
  • Dial-up
  • Broadband
  • DSL (Digital Subscriber Line) / Cable / Fiber
  • Standard Phone / TV Lines
  • Fixed Wireless
  • Dish Communicates with Tower via Radio Signals
  • Cellular Radio
  • Cell Phone Technology
  • Wi-Fi (Wireless Fidelity)
  • Radio Signals for Wireless Computers Devices
  • Satellite

7
Internet Mechanics
  • Access Providers
  • ISP (Internet Service Provider)
  • Regional
  • Provide Access to Specific Geographical Area
  • National
  • Provide Access in Cities Towns Nationwide
  • OSP (Online Service Provider)
  • Member-only Features
  • e.g., Comcast
  • WISP (Wireless Internet Service Provider)

8
Internet Mechanics
  • Addressing
  • IP (Internet Protocol) Address
  • Identifies Each Device Connected to Internet
  • Unique Number
  • 2.7/3.7 Billion Used
  • Run Out in 2012
  • IPv6 3.4 x 1038 v. 232
  • Domain Name
  • Text Version of IP Address

9
Internet Mechanics
  • Addressing
  • TLD (Top Level Domain)
  • Identifies Type of Organization
  • ccTLD
  • Two-letter Country Code Outside US
  • ICANN Assigns Controls TLDs
  • DNS (Domain Name System)
  • DNS Server
  • Translates Domain Name to IP Address

10
World Wide Web
  • Web Addressing
  • URL (Uniform Resource Locator)
  • Unique Address for Page Located on Server

11
World Wide Web
  • Web Browser
  • Program that Allows Access to Web Pages
  • Netscape
  • Internet Explorer
  • Spent 1.25 B
  • Mozilla
  • Firefox
  • Safari
  • Chrome
  • Microbrowser
  • Mobile Devices

12
World Wide Web
  • Site Types
  • Portal
  • Search, News, Weather, Reference, Shopping
  • News
  • Informational
  • Business / Marketing
  • Educational

13
World Wide Web
  • Site Types
  • Blog (Web Log)
  • Informal Journal / Diary Posts
  • Reflect Interest Opinion of Author
  • Wiki
  • Collaborative Site
  • Users Create, Add, Modify, Delete Content
  • SocNet (Social Networking)

14
World Wide Web
  • Site Types
  • Content Aggregator
  • Gathers, Organizes, Distributes Content
  • RSS (Really Simple Syndication)
  • Entertainment
  • Advocacy
  • Application
  • Personal

15
World Wide Web
  • Content
  • Must be Evaluated for Accuracy
  • No One Oversees Web Page Content

16
World Wide Web
  • Multimedia
  • Graphics
  • GIF, JPG, PNG
  • Audio
  • MP3, WAV
  • Compression to 1/10 Original Size
  • Streaming
  • Transfers Data in Continuous Even Flow
  • Podcast

17
World Wide Web
  • Multimedia
  • Video
  • MPG, AVI, MOV, WMV
  • Vodcast
  • VR (Virtual Reality)
  • Simulate Three-dimensional Environment
  • Second Life, There

18
World Wide Web
  • Plug-in
  • Programs that Extend Browser Capability
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