The document discusses how traffic moves over the Internet, beginning with personal digital assistants connecting to Internet service providers, which in turn connect to points of presence on the Internet backbone, the main trunk connection consisting of many networks that links the Internet together globally.

1. How Trafc Moves over the Internet
● PDA
● ISP
● POP
● Internet backbone

2. PDA
● A personal digital assistant.
● It is electronic epuipement that has the same
size of palm.

3. ISP
An Internet service provider (ISP), also sometimes
referred to as an Internet access provider (IAP), is a
company that offers its customers access to the Internet.
The ISP connects to its customers using a
data transmission technology appropriate for delivering
Internet Protocol packets or frames, such as dial-up, DSL
, cable modem, wireless or dedicated high-speed
interconnects.

4. POP
:Post Office Progtocol
:POP(POP3) is an application-layer Internet
standard protocol used by local e-mail clients to
retrieve e-mail from a remote server over a TCP/IP
connection.

5. Internet backbone
The main trunk connection of the Internet.
It consists of many network.

6. ● Wikipedia
● PDA:http://e-words.jp/w/PDA.html
● Internet backbone:
http://en.wikipedia.org/wiki/Internet_Backbone