| UDP |
(User
Datagram Protocol) A connectionless transport layer protocol. It does not
perform retransmission of data. |
| UID |
User identifier,
a number representing a user account (all files and processes in UNIX are
associated with the owner's UID). |
| UNARY
OPERATOR |
An operator
with one operand. |
| UNIX |
An operating
system used on many Internet hosts. |
| UPLOAD |
Move a
file from your local computer to a remote computer. |
| URL |
(Universal
Resource Locator) Used to specify the location and name of a World Wide
Web document. You can also specify other Internet services available from
WWW browsers, for example, http: |
| USENET |
A collection
of computer discussion groups that are read all over the world. |
| USER AGENT |
An electronic
mail program that helps end users manage messages. |
| USER NAME |
The ID
used to log on to a computer. |
| USER SERVICE |
A service
provided by TCP permitting an application to specify that data being transmitted
is urgent and should be processed as soon as possible. |
| UUCP |
(UNIX
to UNIX Copy Protocol) An early transfer protocol for UNIX machines that
required having one machine call the other one on the phone. |
| UUDECODE |
A program
that lets you construct binary data that was UUEncoded. |
| UUENCODE |
A program
that lets you send binary data through e-mail. |