1. Internet

2. Internet
The Internet is a network of networks – a global communications system that links together thousands of individual networks.

3. The Internet’s History
1969: ARPA of the US department of Defense began – connecting computers at different universities and defense contactors. The network called ARPANET
1973: The network connected to Europe
1980: Another govt agency NFS joined the project
1990: ARPANET shut down
1995: NFS net discontinued & Commercial Internet backbone services replaced them

4. The Internet’s Major Services
The World Wide Web
Electronic Mail
News
File Transfer Protocol
Chat
Instant Messaging
Online Services
Per-to-Peer Services

5. World Wide Web (WWW)
An Internet service developed to incorporate footnotes, figures, and cross-references into online hypertext documents.

6. Electronic Mail (E-Mail)
A system for exchanging written, voice, and video messages through a computer network.

7. File Transfer Protocol (FTP)
A set of rules that dictates the format in which data is sent from one computer to another computer.

8. Hypertext
Web documents can be linked together because they are created a format known as Hypertext. Hypertext systems provide an easy way to manage large collections of data , which can include text files, pictures, sounds, movies, and more.

9. HTTP
To support hypertext documents, the web uses a special protocol, called the Hypertext Transfer Protocol (HTTP)

10. HTML
Hypertext Markup Language(HTML): A page–description language used on the World Wide Web that defines the hypertext links between documents

11. Web Site
A collection of related Web pages is called a Web site.

12. URL: Uniform Resource Locator
The hypertext transfer protocol uses Internet address in a special format, called a URL.

13. Search the Web
Directories: By selecting categories of subject matter
Search Engine: Keyword Search. Google, yahoo