The Internet
and the
World Wide Web
What is the Internet?
>>> the Internet is a global network of
computers
>>> Network - connection of several
computers for ...
What is the
World Wide Web?
>>> or simply “the Web”, is a
global, computer-based network of
information and resources that...
Internet vs WWW
>>> the Internet is the highway system
>>> the Web is the package delivery
service that uses the highway
How does it work?
>>> all computers in the web can
communicate with each other using
the communication standard called
HTT...
How does it work?
Client/Server Architecture
• Information is stored on
computers called Web servers
• Computers reading t...
How does it work?
>>> Internet Service Providers
(ISPs) - businesses that provide
individuals and companies with the
means...
How does it work?
2 Types of Internet Access
• dedicated - 24/7 connection
e.g. DSL, cable
• dial-up - uses a device calle...
How does it work?
Web Page vs. Web Site
• Web information is stored in
documents called Web pages
• Web pages are clustere...
How does it work?
Browsers
• Web clients view the pages with a
program called a Web browser
e.g.
Internet Explorer and Net...
How does the browser
fetch Web pages?
>>> through a request
>>> a standard http request contains
a web page address or url...
How does the browser
display the Web pages?
• All Web pages contain
instructions for display
• The browser displays the pa...
How does the browser
display the Web pages?
• The most common display
instructions are called HTML tags
• HTML tags look l...
Who is making the
Web standards?
>>> not Microsoft or Netscape
>>> The rule-making body of the Web
is the W3C (World Wide ...
What are the types of
Web Sites?
• Personal: promote oneself and
services offered
• Organization/Topical: promote
member a...
What are the types of
Web Sites?
• Commercial: promote and sell
products online
• Search Services: search engines
and dire...
What are the types of
Web Sites?
• Portals: offer a wide array of
services, such as e-mail, forums,
search engines, and on...
What are the other
types of Internet
Applications?
>>> email, newsgroups/egroups,
Telnet, IP-telephony, peer-to-
peer, ftp...
The Impact of the Internet
• Communication
• Business
• Education
• Entertainment
• and so much more…
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Internet & World Wide Web (Into. to Internet & Web Page Dev't)

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Internet & World Wide Web (Into. to Internet & Web Page Dev't)

  1. 1. The Internet and the World Wide Web
  2. 2. What is the Internet? >>> the Internet is a global network of computers >>> Network - connection of several computers for the purpose of sharing resources and data >>> Intranet - a private network for information management and sharing among only its members or employees
  3. 3. What is the World Wide Web? >>> or simply “the Web”, is a global, computer-based network of information and resources that can be accessed through the worldwide network of computers known as the Internet
  4. 4. Internet vs WWW >>> the Internet is the highway system >>> the Web is the package delivery service that uses the highway
  5. 5. How does it work? >>> all computers in the web can communicate with each other using the communication standard called HTTP (HyperText Transfer Protocol)
  6. 6. How does it work? Client/Server Architecture • Information is stored on computers called Web servers • Computers reading the information are called Web clients
  7. 7. How does it work? >>> Internet Service Providers (ISPs) - businesses that provide individuals and companies with the means to connect to the internet e.g. sky cable, home cable, aol…
  8. 8. How does it work? 2 Types of Internet Access • dedicated - 24/7 connection e.g. DSL, cable • dial-up - uses a device called a telephone modem. It connects to the internet through existing phone lines
  9. 9. How does it work? Web Page vs. Web Site • Web information is stored in documents called Web pages • Web pages are clustered as Web sites
  10. 10. How does it work? Browsers • Web clients view the pages with a program called a Web browser e.g. Internet Explorer and Netscape Navigator
  11. 11. How does the browser fetch Web pages? >>> through a request >>> a standard http request contains a web page address or url (uniform resource locator) e.g. http://www.homepage.com/page.html
  12. 12. How does the browser display the Web pages? • All Web pages contain instructions for display • The browser displays the page by reading these instructions
  13. 13. How does the browser display the Web pages? • The most common display instructions are called HTML tags • HTML tags look like this: <p>This is a Paragraph</p>
  14. 14. Who is making the Web standards? >>> not Microsoft or Netscape >>> The rule-making body of the Web is the W3C (World Wide Web Consortium) >>> The most essential Web standards are HTML, CSS and XML
  15. 15. What are the types of Web Sites? • Personal: promote oneself and services offered • Organization/Topical: promote member accomplishments or encourage support and participation/ talk about a specific theme/topic
  16. 16. What are the types of Web Sites? • Commercial: promote and sell products online • Search Services: search engines and directories
  17. 17. What are the types of Web Sites? • Portals: offer a wide array of services, such as e-mail, forums, search engines, and on-line shopping malls
  18. 18. What are the other types of Internet Applications? >>> email, newsgroups/egroups, Telnet, IP-telephony, peer-to- peer, ftp (file transfer protocol), instant messaging, chat, video conference, etc…
  19. 19. The Impact of the Internet • Communication • Business • Education • Entertainment • and so much more…

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