A server farm contains many connected servers that work together to provide capabilities beyond a single machine. The Internet backbone consists of high-capacity data routes and core routers that transmit data across countries and continents. An Internet service provider connects customers to the Internet using technologies like dial-up, DSL, or cable modem. A personal digital assistant is a handheld computer that can function as a mobile phone, web browser, or portable media player.

1. How Traffic Moves over the Internet
About Server farm
About Internet backbone
About ISP
About PDA
. – p.1/??

2. About Server farm
A server farm or server cluster is a collection of computer
servers usually maintained by an enterprise to accomplish
server needs far beyond the capability of one machine.
. – p.2/??

3. About Internet backbone
The Internet backbone refers to the main quot;trunkquot;
connections of the Internet. It is made up of a large
collection of interconnected commercial, government,
academic and other high-capacity data routes and core
routers that carry data across the countries, continents and
oceans of the world.
. – p.3/??

4. About ISP
An Internet service provider (ISP, also called Internet
access provider or IAP) is a company that offers their
customers access to the Internet. The ISP connects to its
customers using a data transmission technology
appropriate for delivering Internet Protocol datagrams, such
as dial-up, DSL, cable modem or dedicated high-speed
interconnects.
. – p.4/??

5. About PDA
A personal digital assistant (PDA) is a handheld computer
also known as palmtop computers. Newer PDAs also have
both color screens and audio capabilities, enabling them to
be used as mobile phones,(smartphones), web browsers,
or portable media players.
. – p.5/??

6. References
Wikipedia
http://en.wikipedia.org/
Yahoo
http://www.yahoo.com/
. – p.6/??