Filter
Top Products
139
U
UDP. See User Datagram Protocol.
Uniform Resource Locator (URL). A text-based address used to identify specific resources on the
Internet, such as web pages. URLs are arranged in a hierarchical form that specifies the name of the server
on which a resource is located (such as www.bt.com) and the name of the file on that server (www.bt.com/
index.html).
Universal Serial Bus (USB). A computer interface used for connecting computer peripherals such as
printers, keyboards and scanners.
URL. See Uniform Resource Locator.
USB. See Universal Serial Bus.
User Datagram Protocol. A TCP/IP protocol describing how data packets reach application programs
within a destination computer.
V
Variable Bit Rate (VBR). A data transmission that can be represented by an irregular grouping of bits or
cell payloads followed by unused bits or cell payloads.
VDSL. See Very High Bit-rate Digital Subscriber Line.
Very High Bit-rate Digital Subscriber Line (VDSL). A type of asymmetric DSL that delivers from 13 to
52 Megabits per second downstream bandwidth and 1.5 to 2.3 Megabits per second upstream.
Video on Demand (VOD). A pay-per-view television service in which a viewer can order a program from
a menu and have it delivered instantly to the television set, typically with the ability to pause, rewind, etc.
Virtual Reality Markup Language (VRML). A computer language that provides a three-dimensional
environment for traditional Internet browsers, resulting in a simple form of virtual reality available over
the Internet.
VOD. See Video on Demand.
VRML. See Virtual Reality Markup Language.
W
WAN. See Wide Area Network.
Wide Area Network (WAN). A network that interconnects geographically-distributed computers or local
area networks.
Wireless. Transmission of data over radio waves rather than wiring. For more information on wireless,
visit the Local Networking Resource Center.
Wireless Node. A user computer with a wireless network interface card.
X
xDSL. See DSL.