- Packet
- The smallest unit for transmitting data over the
Internet. Data is broken up into packets, sent over the network and then
reassembled at the other end.
- Password
- Secret code to identify a user when logging onto a
system.
- Perl
- Powerful scripting language, often used to write
CGI scripts.
- PGP
- See pretty good privacy.
- Phrase Search
- A search for documents on the Internet containing
an exact sentence or phrase specified by a user.
- Plug-ins
- Software that adds functionality to commercial
applications, such as the Netscape browser or Adobe's Photoshop.
- Point of Presence
- Local access to the services of an ISP. See also
ISP.
- POP
- See point of presence.
- POP3
- See post office protocol.
- Port
- Interface for accessing services on a server.
- Portal
- Point of entry web site to the Internet.
- Post Office Protocol
- Protocol for receiving mails via a client.
- Postmaster
- Administrator of the mail server. In case of
problems, you can contact the postmaster. The postmaster of someone@foobar.org is
postmaster@foobar.org, for example.
- Pretty Good Privacy
- Encryption algorithm developed by Phil Zimmerman.
- Protocol
- Rules how computers and applications interact.
- Proxy Server
- A proxy server retrieves documents on demand from a
server and passes them on to a client. The advantage with a proxy server is that it
normally caches documents. It is considerably faster to retrieve documents from the
proxy rather than directly from a web server, especially if someone else has already
retrieved that particular document.
- PSTN
- See public switched telephone network.
- Public Switched Telephone Network
- The normal telephone network.
- Push Technology
- Also referred to as "Web-casting" or "channel-casting",
this technology broadcasts personalized information to subscribers.
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