Cobalt Digital Inc RaQ 4 User Manual page 230

Appendix F: Glossary
Point-to-Point Protocol over Ethernet (PPPoE)
A specification for connecting multiple computer users on an ethernet to a
remote site through common customer-premises equipment such as a
modem and similar devices. PPPoE can be used to allow an office or
building full of users share a common digital subscriber line (DSL), cable
modem or wireless connection to the Internet. PPPoE combines the
Point-to-Point Protocol (PPP), commonly used in dial-up connections, with
the ethernet protocol, which supports multiple users in a local area network
(LAN). PPP information is encapsulated within an Ethernet frame.
POP3
See Post Office Protocol (POP3).
Post Office Protocol 3 (POP3)
Post Office Protocol (POP) is a standard protocol for receiving email. POP is
a client/server protocol in which email is received and held for you by your
Internet server. When you read your mail, all of it is immediately downloaded
to your computer and no longer maintained on the server, unless specified
otherwise in the email client. POP3 is built into the Netscape Navigator and
Microsoft Internet Explorer browsers.
POP can be thought of as a store-and-forward service; in other words, your
email messages are held at the server until you open your email client and
download the messages to your local machine. Another protocol, Internet
Message Access Protocol (IMAP), can be thought of as a remote file server.
POP and IMAP deal with receiving email from your local server; Simple
Mail Transfer Protocol (SMTP) is a protocol for transferring email between
points on the Internet. You send email with SMTP and a mail handler
receives it on your recipient's behalf. The mail is then read using POP or
IMAP.
See also Internet Message Access Protocol (IMAP) and Simple Mail Transfer
Protocol (SMTP).
PPP
See Point-to-Point Protocol.
PPPoE
See Point-to-Point Protocol over Ethernet.
RAID
See Redundant Array of Independent Disks (RAID).
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