P
Packet
switching
Packet Switching is a method for moving data around the internet. The
main idea is that the data is brokrn into small chuncks which travel on
its own. Therfor, nodes share bandwidth with each other by sending different
kinds of packets side by side. This way no single user can block a line
for others. When the chunks arrive to their destination the data will be
mended to the original data.
POP
-
Point Of Presence - A location with physical equipment
that enables to connect to a netrwork. Usually with dial up phone lines.
-
Post Office Protocol - A protocol used to retrieve
E-Mail messages from a mail server by mail applications.
see also: E-Mail, SMTP
Port
-
Port is an interface on a device through which information gets into or
sent from that device.
-
Port is also refered to, in IP terminology, as a number that comes as part
of a URL (after a colon that comes right after the domain name). It tells
on which port number the server is listenning for a specific service. For
example, SMTP is usually assosiated with port 25 etc...
PPP
Point to Point Protocol - A protocol for
creating a TCP/IP connection over both synchronous and asynchronous systems.
see: Protocols - PPP
Protocol
A set of rules which says how devices on a network exchange different
kinds of information.
see: Protocols - General