INTERNET TECHNOLOGY

Definition of internet

The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individuals.

Evolution of the internet

ARPANET

•ARPA – Advance Research Project Agency created by US Department of Defense

•The network is called ARPANET

•The network became functional in September 1969  

The original ARPANET consisted of 4 main computers located at:

qUniversity of California at Los Angeles

qUniversity of California at Santa Barbara

qThe Stanford Research Institute

qUniversity of Utah

q

Each computers served as a host on the network (today known as server)

INTERNET2

•Internet2 is not a new network (especially to replace the Internet)

•It is a Research and Development (R&D) project

•In developing technology to ensure that the Internet in the future can handle tomorrow’s applications.

•Not-for-profit R&D project

•Connects more than 200 universities and 115 companies via a high-speed private network

 Who controls the Internet?

qNo one - it is a public, cooperative and independent network

qSeveral organizations set standards

                                 
   intranet   
  •An intranet ( intra means within) is an internal network that uses internet technologies.
  •Network which only available inside an organization or a company.

                extranet 
              •An extranet is the portion of a company’s network that allows customers or suppliers of a company to access parts of an enterprise’s intranet.

•An extranet provides a secure, physical connection to the company’s network.