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21. uDAPL User Direct a specification and
22. UDF Access a library that
Programming defines a single set
Library of user APIs for all
RDMA-capable
transports.
Universal The volume
Disk Format format of DVD
disks.
23. UDLP UniDirectional This protocol is
Link Protocol used by
inexpensive,
receive only
antennas to receive
data via satellite.
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24. UDMA Ultra A protocol developed
25. UDO DMA by Quantum
26. UDP (Ultra Corporation and Intel
Direct for disk drives that
Memory enables the computer
Access) to take advantage of
the fast Ultra ATA
Ultra disk drives.
Density
Optical Optical storage
technology that
User increases capacities by
Datagram using an extremely
Protocol focused blue laser to
write and read data.
It is part of the
TCP/IP suite of
protocols used for
data transferring. UDP
is a known as a
"stateless" protocol,
meaning it doesn't
acknowledge that the
packets being sent
have been received.
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27. UDRP Uniform defines how disputes
Dispute over domain name
Resolution registrations are
policy resolved in the global
top-level domains
(.biz, .com, .info,
.name, .net, and .org as
well as .aero, .coop,
and .museum).
28. UFS Unix File The default disk-based
System file system under the
Unix operating system
29. UGC User UGC covers a range of
generated media content
content available in a range of
modern
communications
technologies.
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30. UGS Unsolicited one of the five QoS
Grant service types defined in
Service the IEEE 802.16
WiMAX. The 802.16
protocol supports five
types of QoS.
31. UHF Ultra High Electromagnetic
Frequency frequencies in the range
of 300 to 3000
megaherz. Used for
some television and
radio transmission.
32. UHV Ultra High a term meaning any
Voltage amount of voltage in
excess of 800,000 volts.
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33. UI user The connection
interface between the user and a
computer's hardware
or software that
permits the user to
work productively
with a system or a
program.
33. UIA Unified Information Access
Information provides total insight
Access based on aggregating
all types of data and
content in one
universal index
34. UL Underwriters a world leader in
Laboratories product safety testing
Inc. and certification, is
working with HP on a
two-year project to
standardize processes
and technologies.
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35. ULH ultra-long- 100Gbps optical system
haul
36. ULV Ultra Low A class of processors
Voltage that are deliberately
under clocked to use
less power at the
expense of performance.
37. UM Unified UM is an extension of
messaging voice mail that enables
subscribers to access
and manage messages,
such as voice mail, fax
mail and e-mail, from a
single-user interface.
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38. UMA Unified- rovides access to GSM
Memory and GPRS mobile
Architecture services over
unlicensed spectrum
technologies, including
Bluetooth and 802.11
39. UMA Upper In a PC, the memory
Memory area between 640K and
Area 1024K. Under DOS,
this memory area is
ordinarily designated
for use by the ROM
BIOS and display
40. UMB Ultra the brand name for the
Mobile project to improve the
Broadband CDMA2000 mobile
phone standard for next
generation applications
and requirements.
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41. UMC ultra The radical adoption of
modular modular principles
computing based on using
commodity
components in a
standardized
architecture in order to
simplify
42. UMID Unique A methodology for
Material materials suppliers to
IDentifier code a material that
only THEY supply.
43. UML Unified A standardized visual
Modeling notation for
Language communication about
system specifications
and design details.
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44. UMS Unfied a technology that
Messaging should allow users
Systems to access messages
sent in different
formats through one
single interface
45. UMTS Universal .
Mobile UMTS is envisioned
Telecommunic as the successor to
ation System Global System for
Mobile
Communications
(GSM).
46. UNI User-to- ATM User Network
Network Interface is an ATM
Interface Forum specification
of the interface
between an ATM
user device and the
ATM network.
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47. Unicode UNIversal A 16-bit character set
CODE defined by ISO
10646.
48. UOL Universo UOL is a Brazilian
Online online service
provider and ISP.
49. UOW unit of In advanced program-
work to-program
communications, the
amount of processing
that is started directly
or indirectly by a
program on the
source system.
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50. UPA user The area within the
printable valid printable area
area (VPA) where user-
generated data can print
without causing an
exception condition.
51. UPC Universal The bar code printed on
Product retail merchandise, it
Code contains the vendor's
identification number
and the product
number.
52. UPnP Universal Plug and Play describes
Plug and devices that work with
Play a computer system as
soon as they are
connected.
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53. UPS Uninterruptib In the technology
le Power world, UPS is more
Supply than just a brown
shipping company.
54. UPT Universal a set of standards
Personal developed by the
Telecommun CCITT for wireline
ications personal
communications.
55. URC Utility Ready HP's integrated IT
Computing compute capacity
acquisition program
that includes a
portfolio of
deployment, support,
availability, and
management services.
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56. RI Uniform An address for s
Resource resource available on
Identifier the Internet. The first
part of a URI is called
the "scheme".
57. URL Uniform The standard way to
Resource give address of any
Locator resource on the Internet
that is part of the
WWW.
58. URN Uniform A URI that is supposed
Resource to be available for along
Name time. For an address to
be a URN some
institution is supposed
to make a commitment
to keep the resource
available at that
address.
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59. uRPF Unicast limit the malicious
Reverse traffic on an enterprise
Path network
Forwarding
60. URT User Dynamic authorization
Registration and policy control
Tool framework that
manages access to the
LAN by partitioning
user traffic through
VLANs
61. USB Universal an external bus
Serial Bus standard that supports
data transfer rates of 12
Mbps.
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62. USENET USEr's A world-wide
NETwork system of discussion
groups, with
comments passed
among hundreds of
thousands of
machines.
63. up-link / A term used in
uplink satellite
communications to
64. Unix describe the earth
station and the
transmit ted signal to
a communications
satellite .
A computer
operating system
(the basic software
running on a
computer,
underneath things
like word processors
and spreadsheets
built-in.
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1. V.35 An ITU interface
specification for data
transmitted at 48 kilobits
per second.
2. v- Video mail Sending video clips as
mail attachments to e-mail
messages.
3. VH Vertical used to determine
and straight-line mileage
horizontal between locations. The
grid points junction point is the
called V and H
coordinate.
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4. V2P Virtual to refers to the migration
5. VA physical of an operating system
(OS), application
virtual programs and data from
assistant a virtual machine or
disk partition to a
computer's main hard
disk.
a conversational,
computer-generated
character that
simulates a
conversation to deliver
voice- or text-based
information to a user
via a Web, kiosk or
mobile interface.
6. VADP vStorage VMware's replacement
APIs for for VCB, integrates
Data backup functionality
Protection via vStorage APIs
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7. VAIO Video Sony notebook brand
8. VAN Audio
Integrated VANs are public
9. VAR Operation networks that add value
Value- to the basic
Added communication
Network provided by common
carriers by offering
value- specialized services
added such as access to
reseller commercial data bases,
E-mail and video
conferencing.
An organization that
buys equipment from a
vendor at a discount,
adds value (such as
application software
packaged and sold with
underlying system
software) and remarkets
it.
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10. VAROS VAriable Scanner technology
Refraction by Canon
Optical
System
11. VATH Visual, Modalities in Avatar-
Auditory, based Real Time
Tactile, Distributed Virtual
Haptic Environment.
12. VAX Virtual The Digital
Address architecture that was
Extension the company's
principal product line
prior to the Alpha.
VAX was
enormously
successful in DEC's
traditional
engineering and
scientific customer
base.
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13. VB Visual software product
14. VBA Basic developed by
Microsoft. Its purpose
Virtual is to bring
backup programming down to
appliance a drag-and-drop level to
speed up development
cycles.
VBA is a virtual
machine used to back
up other virtual
machines
15. vBNS very high- The next generation
speed Internet. Sponsored by
Backbone the NSF and
Network implemented by MCI,
Service vBNS presently
supports data transfer
rates of 622Mbs and is
expected to eventually
support 2.5Gbs speeds.
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16. VBR variable bit QoS class defined by
rate the ATM Forum for
ATM networks. VBR
is subdivided into a
real time (RT) class
and non-real time
(NRT) class.
17. VBUG Voice A group within the
Browser W3C developing voice
Usability portal usability
Group guidelines and best
practices.
18. VBX Visual A software module
Basic that can be used in
Custom many different
Control applications. VBXs
were originally created
to to make it easy to
develop Windows
applications with
Visual Basic
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19. VC Videoconference A real-time video
session between
two or more users
or between two or
more locations.
20. VCB VMware VMware
Consolidated Infrastructure
Backup feature
21. VCC Voice Call VCC is a key
Continuity aspect of the IMS
promise of a
seamless user
experience.
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22. VCD Video This technology was
Compact developed by Sony
Disc and Philips in 1993,
and allows around 70
minutes of compressed
MPEG-1 video/audio
to be stored on a CD.
23. VCDX VMware VMware Certified
Certified Design Expert
Design
Expert
24. VCI Virtual Stands for "Virtual
Channel Channel Identifier."
Identifier The VCI, used in
conjunction with the
VPI (virtual path
indicator), indicates
where an ATM cell is
to travel over a
network.
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25. VCM Virtual A type of memory
Channel developed by NEC.
Memory VCM memory adds
some low latency
SRAM registers onto
standard SDRAM,
much like EDO
compared to Fast Page
Mode memory.
26. VCO voltage- An oscillator with an
controlled output frequency that is
oscillator a function of an input
voltage.
27. VCP Value Oracle's SCP
Chain capabilities
Planning
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28. VCR video An analog magnetic
cassette recording and playback
recorder machine. Usually used
for recording and
viewing full-motion
video
29. Vdeck Video A Super 8 mm tape
Deck drive from Sony which
can be connected to a
computer via the serial
port.
30. VD Virtual object presented to the
Disk host level for user data
storage. At least one
physical disk is
associated with a VD.
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31. VDI Virtual practice of hosting a
desktop desktop operating
infrastructure system within a virtual
machine (VM) running
on a centralized server.
32. VDR virtual deal a secure, Web-based
room virtual data room that
complements or
replaces the paper-
based deal room that
contains all relevant
information needed
during the due
diligence phase.
33. VDS Variable Printing technology by
Drop Size NEC
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34. VDSL very high- Extremely high-speed
speed DSL connections over
digital short distances.
subscriber
line
35. VDT Video A computer terminal
Display with monitor and
Terminal keyboard; sometimes
VDT refers to only the
monitor.
36. VDU Visual includes a keyboard for
Display input data and a screen
Unit for displaying output
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37. VEP vertical A portal that typically
enterprise includes a business
portal application and focuses
on a specific business
function (e.g.,
investment or customer
service) of an
enterprise — unlike a
HEP, which serves a
broad enterprise
population.
38. VESA Video An organization to
Electronics help standardize how
Standards PCs implement video
Association technologies.
39. VF Voice Voice Frequency
Frequency
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40. VFM virtual file IBM System Storage N
manager series VFM software is
a comprehensive
solution for managing
unstructured file data.
41. VGA Video A hardware display and
Graphics software resolution
Array standard for personal
computers.
42. VGF voice grade Circuit designed to
facility DDD network
standards, making it
suitable for voice, low-
speed data, facsimile or
telegraph service.or a
virtual machine
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43. VHD Virtual File format containing
44. VHDL Hard Drive the complete contents
and structure
VLSI representing a Hard
Hardware Disk Drive, and is
Description used to store virtual
Language operating systems and
their associated
programs in a single
file by various
virtualization
programs or a virtual
machine
an industry standard
format for describing
integrated circuit logic
and behavior.
45. VHF very high range of the radio
frequency spectrum is the band
extending from 30
MHz to 300 MHz.
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46. VHDTS Very High 68-pin SCSI
Density connector with
Thumb manually screwable
Screw screws
47. VHLL Very- A high-level language
High- that is very
Level structured, having
Language strict rules that must
be followed.
48. VHM Voice Helps system
Health administrators and
Monitor network managers
determine and
maintain the stability
of the VoIP network
within their enterprise
by using a series of
availability and health
checks
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49. VHS video A videocassette
home format.
system
50. Vodcast video A podcast is a short
podcasting video clip that is
broadcast over the
Internet.
51. VIC Voice connects the system
Interface to either the PSTN or
Card to a PBX.
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52. VIM Vendor An API defined by
53. Vines Independent Apple Computer, Inc.;
Messaging Borland International,
Inc.; Lotus
VIrtual Development
NEtwork Corporation; and
System Novell, Inc.
a client/server network
designed and marketed
by Banyan
54. VIO virtual A type of storage group
input/output that allocates data sets
to paging storage,
which simulates a
direct access storage
device (DASD)
volume.
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55. VIP VeriSign cloud-based
56. VITAL Identity authentication
Protection service that
enables
enterprises to
secure online
access and
transactions to
help obtain
compliance and
reduce fraud risk
VHDL A standard for
Initiative for defining the
the format of
Standardization integrated circuit
of ASIC simulation
Libraries libraries.
57. VIVO Video In Vide a graphics card
o Out port which
enables some
508 video cards to
have bi-directional
video transfer
originally through
a Mini-DIN
connector and a
A L P H A B E Tv
58. LA Volume A software licensing
59. VLAN License option offered under
Agreement the Novell "Customer
Connections"
program, with an entry
point that opens
discounts to smaller
organizations.
virtual A set of systems that,
local-area regardless of higher-
network layer addressing or
location, is designated
as a logical LAN and
treated as a set of
contiguous systems on
a single LAN segment.
60. VLC VideoLan Highly portable
Client multimedia player for
various audio and
video formats (MPEG-
1, MPEG-2, MPEG-4,
DivX, mp3, ogg, ...)
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61. VLDB very large A database measured
62. VLE database in terabytes.
Virtual A browser dependent
Learning software system that
Environment enables online
interaction between
learner and tutor.
63. VLF Very Low Electromagnetic
Frequency frequencies in the
range of 3 to 30
kiloherz. VLF
radiation has been a
source of health
concerns in the use of
computer monitors.
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64. VLIW Very Long A microprocessor
Instruction architecture different
Word from CISC and RISC.
VLIW uses encoded
instructions that are
even more complex
than the instructions
used in CISC.
65. VLK Volume A single license key
License which can be used on a
Key number of computers
to install a given
product.
66. VLL Virtual way to provide
Leased Ethernet based point to
Line point communication
over IP/MPLS
networks.
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67. VLR Visitor contains all subscriber
Location data required for call
Register handling and mobility
management for mobile
subscribers currently
located in the area
controlled by the VLR.
68. VLS Virtual HP StorageWorks
Library backup and recovery
Systems solutions
69. VLSI Very Large The process of placing
Scale of more than 100,000
Integration transistors on one chip
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70. VM virtual An instance of a
machine data-processing
system that appears
to be at the
exclusive disposal
of a single user
71. VMDQ Virtual part of the Intel VT-
Machine c suite for
Device virtualization
Queues environments on
Intel Ethernet server
adapters.
72. MEbus VersaModule an alternative to the
Eurocard bus PC bus, S-100 bus
and others. The
original design was
32-bit bus
developed jointly by
Motorola, Signetics,
Mostek and
Thompson CSF.
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73. VMI vendor- vendor-managed
managed inventory
inventory
74. VML Vector An application of XML
Markup used for the markup of
Language vector graphic
information in the same
way that HTML is used
for the markup of text.
75. VMM virtual host program that
machine allows a computer to
monitor support multiple and
identical execution
environments in
virtualization
technology.
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76. VNC Virtual A remote display
Network system which
77. Video Computing allows you to view a
Search computing 'desktop'
environment not
only on the machine
where it is running
The ability to search
within a collection
of videos, whether
inside the enterprise
or outside, whether
under enterprise
control or in another
company's domain
78. Video a form of immersive
telepre video
sence communication that
creates the
impression of being
in the same room as
other conference
participants.
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79. Virus A chunk of computer
programming code that
makes copies of itself
without any concious
human intervention.
80. Vista formerly code named
Longhorn, is the name
of the next Microsoft
Windows desktop
operating system release
to follow Windows XP.
81. voice The term applied to
grade channels used primarily
for speech transmission,
generally with a
frequency range of
about 300 to 3,000
cycles per second
(hertz.)
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82. voiceband A voice grade
bandwidth typically
spanning between
300 and 3300 Hz.
83. Vtunnel Web proxy
supporting SSL via
the HTTPS
encryption protocol.
84. VWS Virtual A VWS allows you
Web to use your domain
Server on an ISP's web
server. Your URL
will give the
impression that you
have your own
dedicated web
server.
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1. W3C World An organization
Wide Web formed in 1994 to
2. WAA Consortium promote the Web's
3. WAAS evolution as a platform
for information,
commerce and
communication. The
W3C, which has more
than 500 member
organizations, has
developed XML and a
variety of XML-related
specifications.
Wide Area An adapter connecting
Adapter to a WAN.
Wide Area A collection of
Augmen- satellites and ground
tation stations that send out
System GPS signal corrections
to provide increased
position accuracy.
518