Apple Mac OS - Manual (Page 39)

Glossary 39
ticket, Kerberos A temporary credential that proves a Kerberos client’s identity to a
service.
Transmission Control Protocol See TCP.
UDP User Datagram Protocol. A communications method that uses the Internet
Protocol (IP) to send a data unit (called a datagram) from one computer to another on
a network. Network applications that have very small data units to exchange may use
UDP rather than TCP.
UID User ID. A number that uniquely identifies a user within a file system. Mac OS X
computers use the UID to keep track of a user’s folder and file ownership.
URL Uniform Resource Locator. The address of a computer, file, or resource that can be
accessed on a local network or the Internet. The URL is made up of the name of the
protocol needed to access the resource, a domain name that identifies a specific
computer on the Internet, and a hierarchical description of a file location on the
computer.
USB Universal Serial Bus. A standard for communicating between a computer and
external peripherals using an inexpensive direct-connect cable.
User Datagram Protocol See UDP.
user ID See UID.
user name The long name for a user, sometimes referred to as the user’s real name.
See also short name.
volume A mountable allocation of storage that behaves, from the client’s perspective,
like a local hard disk, hard disk partition, or network volume. In Xsan, a volume consists
of one or more storage pools. See also logical disk.
WebDAV Web-based Distributed Authoring and Versioning. A live authoring
environment that allows client users to check out webpages, make changes, and then
check the pages back in to the site while the site is running.
WINS Windows Internet Naming Service. A name resolution service used by Windows
computers to match client names with IP addresses. A WINS server can be located on
the local network or externally on the Internet.