What is the Internet

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What is the Internet?
DeKalb County School System Designed by Monika
T. Davis, ITS
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Did You Know That

• The words Internet and World Wide Web are
  often used interchangeably.

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Internet vs. World Wide Web

• The Internet is a large collection of computers
  all over the world that are connected to one
  another in various ways.
• used to describe the entire system of networked
  computers
• No one organization owns or controls the
  Internet.

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Internet vs. World Wide Web

• The World Wide Web is a collection of information
  or web pages contained on the computers connected
  to the Internet.
• web pages that can contain text,
• graphics, sound, and video

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Internet vs. World Wide Web
You use the Internet to access or travel on the
World Wide Web
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Did You Know That

• The Internet was created by an organization
  called ARPA for the U. S. Department of Defense
  to decentralize our defense system.

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How does the Internet work?
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How does the Internet work?
Every computer connected to the Internet has to
have an Internet Protocol Address or IP Address
to be recognized or accounted forkinda like your
Social Security Number.
IP Address ? 168.26.149.152
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How does the Internet work?
There are two main kinds of computers on the
Internet
Web Servers Host web pages, email, databases,
etc. (ie. Yahoo, CNN, DeKalb County Schools)
Workstations Individual computers used by everday
people.
The workstation sends a requests data and the web
server sends the answer back.
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How does the Internet work?
This happens simultaneously with millions of web
servers and workstations!
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How can I get access to the Internet?

• DeKalb County Schools
• Log into the Internet by entering a username and
  password on the workstations.
• Double-Click the Internet Explorer (blue E), to
  access the World Wide Web.
• Unless there is a technical problem, the
  Internet and the World Wide Web are always
  available.

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How can I get access to the Internet?

• At Home
• Own a computer with a modem and have a working
  telephone line.
• Hire an Internet Service Provider.
• (AOL, Earthlink, BellSouth, etc.)
• Connect computers modem to the wall, install
  necessary software, and configure IP Address.
• Connect to the Internet and access the WWW.

When using regular Dial-Up, you DO NOT have a
continuous connection to the Internet? Why?
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Internet Speed?
Local Area Network at Work
Dial-Up at Home
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What is a Browser?

• A program that lets you view and explore
  information on the World Wide Web.
• The most common is the Internet Explorer.
• Thanks to Good Ole Billy Boy
• Some computer use Netscape Communicator.

What was the very first browser was called?
Mosaic
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What is a website address?
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URL Uniform Resource Locator
http// www.yahoo.com
Hypertext Transfer Protocol These are the
internet rules. You dont need to type this
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URL Uniform Resource Locator
http// www .yahoo.com
Stands for World Wide Web. All URLs do NOT
start with WWW!
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URL Uniform Resource Locator
http//www. yahoo .com
Host Company or entity providing information.
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URL Uniform Resource Locator
http//www.yahoo. com
Domain category which determines the type of
information the host is supplying.
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URL Uniform Resource Locator
http//www.dekalb.k12.ga.us
Nomenclature for most K 12 Institutions.
ie. http//www.caddo.k12.la.us
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Now lets do some surfing!