|
|
||||
 |
 |
||
     | |||
 |
|||
|
|
P PACKET A Packet refers to the unit of data between an origin and a destination on the Internet. When any file ( e-mail message, HTML file, GIF file, URL request, and so forth) is sent from one place to another on the Internet, the Transport Control Protocol (TCP) layer of TCP/IP divides the file into sections that are an efficient size for routing. Each of these packets include the Internet address of the destination. The individual packets for a given file may travel different routes through the Internet; when they have all arrived, they are reassembled into the original file (by the TCP layer at the receiving end). PING Ping is an Internet program that lets you verify that a particular Internet address exists and can except requests. PLUG-AND-PLAY Plug-and-play refers to when you can plug a device into a computer and have the computer recognise that it is there. PLUG-INS In the context of the Web, these are 'extensions' to your browser which enhance its functionality. Plug-ins enable you to play sound files or animation's, for example. POPs Points of Presence. Refers to the modems which you dial into to connect to the Internet. POP3 Post Office Protocol 3. The most recent version of a standard protocol for receiving e-mail. POP3 is a client-server protocol in which e-mail is received and held for you by your Internet server. Periodically, you check you mailbox on the server and download any new mail. PPP Point to Point Protocol. This refers to the protocol that lets your computer connect to the Internet via a modem. |
||||||||||||||||||||||||||||||||
|