5. QBDG Query A type of distribution
6. QBDL Based group introduced in
Distribution Exchange 2003. It
Group provides similar
functionality to that of
a standard distribution
group, what is different
is that it does not
contain a fixed list of
members but is defined
using a query. This
allows the group
membership list to be
generated dynamically
on demand using the
query.
Query More commonly
Based known as a Query
Distribution Based Distribution
List Group
272
7. QBL Query By QBE is a method of
8. QCIF Example query creation that
allows the user to
search for documents
based on an example in
the form of a selected
text string or in the form
of a document name or
a list of documents.
Because the QBE
system formulates the
actual query, QBE is
easier to learn than
formal query languages,
such as the
standard SQL, while
still enabling powerful
searches.
Quarter videoconferencing
Common format that specifies
Intermediate data rates of 30 fps,
Format with each frame
containing 144 lines and
176 pixels per line.
273
9. QD Queuing refers to the delay
Delay imposed on a cell by
its having to be
buffered because of
unavailability of
resources to pass the
cell onto the next
network function or
element.
10. QDF Quicken File name extension
Data File by Intuit
274
11. QDOS Quick And An early personal
Dirty computer operating
Operating system rumored to be
System the forerunner of PC-
DOS and MS-DOS.
12. QDR Quad Data a type of static RAM
Rate computer memory that
can transfer up to four
words of data in each
clock cycle.
275
13. QEMM Quarterdeck DOS and Windows
14. QFE Expanded memory manager
Memory from Quarterdeck
Manager Office Systems,
Santa Monica,
Quick Fix California; used for
Engineering IBM PCs with an
Intel 80386 or higher
processor.
QFE is a Microsoft
term for the delivery
of individual service
updates to its
operating systems
and application
programs such as
Word. Formerly
called a hotfix,
"QFE" can be used to
describe both the
method of delivering
and applying a patch
or fix, and also to
refer to any
individual fix.
276
15. QFP Quoted For an integrated circuit
Permanence package with leads
extending from each
of the four sides.
16 QI Query database system that
Interface can be accessed by
phone client programs
to retrieve and edit
entries in the server.
This is generally used
for phonebook
services, but can be
used in any database
application.
277
17. qic Quarter- a standard for magnetic
Inch tape drives. QIC tapes
Cartridge are among the most
popular tapes used for
backing up personal
computers. QIC tapes
are divided into two
general classes: full-size
(also called data-
cartridge) and
minicartridge.
18. QIF Quicken File format for financial
Interchange data
Format
278
19. QIP quality A team-based,
20. QIX improvement structured, problem-
process solving process aimed
at achieving
exceptional customer
satisfaction.
NASDAQ QIX is a proprietary
Information specification intended
Exchange to streamline
protocol automated trading in
the financial industry.
QIX, like the open-
standard Financial
Information Exchange
(FIX) protocol and the
computer-to-computer
interface (CTCI),
supports multiple
communications
formats.
279
21. QLLC Qualified transfers
Logical Link IBM SNA data over
Control an X.25 network.
protocol
22. QMF Query An IBM mainframe
Management query and report-
Facility writing product for
relational database
management systems.
280
23. QMS Quality A Mobile, Alabama
Micro manufacturer of laser
Systems printers. QMS made
one of the first
PostScript printers.
24. QName qualified The name of the
name library containing the
object and the name of
the object. A data
name explicitly
accompanied by a
specification of the
class to which it
belongs in a specified
classification system.
281
25. QoE quality of The measurement of
experience overall customer
satisfaction before,
during, and after a
transaction.
26. QoS quality of Any operation that
service
allows traffic priorities
to be designated.
Different traffic
throughout a network
can be classified and
administered. In OSI, a
value that specifies
certain performance
characteristics of a
service, session, or link.
282
27. QP Quantum A programming
28. QPM Programming paradigm that extends
traditional object-
oriented programming
with two additional
fundamental concepts:
hierarchical state
machines and
computing based on
active objects.
QoS Policy A Cisco Systems
Manager offering.
283
29. QPS Queries- QPS is a measure of
30. QPSK per-second how much traffic a
particular query server
Quadrature is handling at a given
Phase-Shift time. On the Internet,
Keying the activity in the
collection of servers
that serve as the
domain name system is
sometimes measured in
queries-per-second.
A method of
modulating digital
signals using four
phase states to code
two digital bits per
phase shift.
284
31. QR Quick Created by Japanese
code Response corporation Denso-
code Wave in 1994, a "QR
32. QSA code" is a matrix code
Qualified (which is a two-
Security dimensional bar code)
Assessor that is a two-
dimensional way of
representing
information. It is similar
to a linear (1-
dimensional) bar code,
but has more data
representation
capability.
company approved by
the PCI SSC to
conduct PCI DSS on-
site assessments.
285
33. QSIG Q Q signaling is a protocol
signaling for ISDN communications
based on the Q.931
standard, is used for
signaling between
digital PBXs. QSIG is
employed
in VoIP networks, VPNs,
and high-speed, multi-
application networks for
corporations, educational
institutions, and
government agencies.
34. QT QuickTime This is a multimedia
technology developed by
our friends at Apple
Computer. It is a popular
format for creating and
storing sound, graphics,
and movie (.mov) files.
Though it is an Apple
technology, QuickTime
software is available for
both the Mac and the PC.
286
35. QTM Quadratic This is a technology
36. QTSS Texture used with NVidia
Mapping based 3D graphics
boards that
QuickTime dramatically speeds
Streaming up texture mapping
Server and screen redrawing
(refreshing) by
reducing the amount
of work required.
NVidia chips use
fewer polygons to
render an acceptable
looking rounded
object.
A technology that lets
you deliver media
over the Internet in
real time.
287
37. QTVR QuickTime QTVR is a 3-D,
Virtual virtual reality version
Reality of Apple's Quicktime
multimedia software.
QTVR uses multiple
still shots to compile
a 3-D view of space.
288
38. QTW QuickTime Multimedia software
for from Apple
Windows Computer that
integrates full-motion
video and sound into
application programs.
289
39 QVGA Quarter QVGA is a small-
Video screen display mode in
Graphics which the resolution is
Array 320 pixels horizontally
by 240 pixels vertically
(320 x 240). This is 25
percent of the total
number of pixels
afforded by the VGA
(Video Graphics
Array) display mode
originally introduced
by IBM in 1987.
290
40. QXGA Quad ((or a display mode in
Quantum) which the resolution is
eXtended 2048 pixels
Graphics horizontally by 1536
Array pixels vertically (2048
x 1536). This results
in 3,145,728 pixels in
the image (sometimes
referred to as 3.2
million pixels). This
resolution is twice the
1024 x 768 seen on
most high powered
units.
291
1. R_A_TOV Resource In fibre-channel
2. R&D Allocation technology, a
Timeout value used to time
Value out operations
that depend on the
maximum
possible time that
a frame can be
delayed in a
fabric and still be
delivered.
Research and A descriptive
Development term for the
function,
organization or
budget allocation
devoted to
researching and
developing new
products or
technologies.
292
3. RAB Raid Industry organization of
Advisory manufacturers and users
4. RAB Board of disk systems and
5. RAC related products whose
mission is to educate
users regarding all
aspects of storage
technology, and in
particular, RAID
technology.
Reverse- Determining the data
Link rate of a reverse link
Activity Bit communication of a
mobile communication
system.
Real RAC is a component of
Application the Oracle 9i database
Cluster product that allows a
database to be installed
across multiple servers.
293
6. RACF Resource Provides improved
Access security for an
7. RACH Control installation's data. RACF
8. RaCon Facility protects your vital
system resources and
controls what users can
do on the operating
system.
Random The channel used by
Access mobiles in GSM and W-
Channel CDMA systems to gain
access to the system
when first attaching to it.
Radar A transmitter-receiver
Beacon associated with a fixed
navigational mark which,
when triggered by a
radar, automatically
returns a distinctive
signal which can appear
on the display of the
triggering radar,
providing range, bearing
and identification
information.
294
9. RAD Radiation The basic unit of
Absorbed measure for
Dose expressing absorbed
radiant energy per
unit mass of
material.
10. RAD Rapid A way of developing
Application a system by
Development completing a
working part,
implementing it, and
adding more
working parts every
few months, instead
of waiting to finish
the entire project
before putting the
system into use.
11. RADA Random A communications
Access technique in which
Discrete radio users share one
Address wide frequency band
instead of each user's
295 being assigned a
narrow band.
12. RADCAB Relevancy It was created by
13. RADIUS Appro- Karen Christensson,
14. RADSL priateness a library media
Detail specialist, for
Currency helping students
Authority research topics on
Bias the Web.
Remote A security protocol
Authen- used to transport
tication passwords between
Dial-In the access device
User and the
Service authentication
server.
Reverse A term for a DSL
ADSL stream that is
asymmetrical in the
upstream direction;
that is, a reverse
ADSL link has a
small downstream
and large upstream
communications
path.
296
15. RADVD Router Run by Linux or
16. RAI Adver- BSD systems acting
tisement as IPv6 routers. It
Daemon sends Router
Advertisement
messages, specified
by RFC 2461, to a
local ethernet LAN
periodically and
when requested by a
node sending a
Router Solicitation
message.
Remote A signal transmitted
Alarm in the outgoing
Indication direction when a
terminal determines
that it has lost the
incoming signal. RAI
is commonly called
the yellow alarm
signal.
297
17. RAID Redundant RAID is a method of
18. RAM Array of storing data on
Independent multiple hard disks.
Disks When disks are
arranged in a RAID
configuration, the
computer sees them all
as one large disk.
However, they operate
much more efficiently
than a single hard
drive.
Random RAM is the storage
Access medium used within
Memory the computer to store
programs and data
while the computer is
switched on and
running. Once the
power to the computer
is switched off, any
programs or data not
saved to the Hard Disk
Drive will be lost
permanently.
298
19. RAMDAC Random Chip on a video
20. RAN Access board that
Memory generates the
21. RARE Digital to analog video
Analog signals
Converter
Radio The ground-based
Access infrastructure
Network required for
delivery of third-
generation (3G)
wireless
communications
services, including
high-speed mobile
access to the
Internet.
Reseaux The European
Associés Association of
pour la Research
Recherche- Networks. Now
Européenne called TERENA
299
22. RAPI Rsvp An RSVP-specific API
23. RARP Application that enables
Program- applications to
24. RAS ming interface explicitly
Interface with an RSVP process
Reverse The protocol which
Address allows a user to
Resolution broadcast a MAC
Protocol address on the local
network, resulting in
the network interface
(NIC) returning it's IP
Address
Regist- A server that facilitates
ration, network connections to
Admission, an enterprise local-area
Status or wide-area network
from users remotely
accessing the network
over cable or telephone
lines using a modem.
The server uses
various protocols to
authenticate and
connect remote users.
300
25. RAS Row A control pin on a
Address DRAM used to latch
Select and activate a row
address. The row
26. RAS Row selected on a DRAM is
Address determined by the data
Strobe present at the address
pins when RAS
becomes active.
A signal sent by the
processor to a DRAM
circuit to tell it that an
associated address is a
row address.
27. RAS Remote A switch feature that
Announcing allows an outside caller,
System with proper access, to
make announcements
over the local public or
office announcing
system.
301
28. RAT Remote Refers to products such
29. RBA Adminis- as PC Anywhere and
tration Tool Carbon Copy but is
more often used to refer
to trojan RATs such as
Back Orifice and
NetBus.
Run Book Automate IT operations
Automation processes across
different IT
management disciplines.
RBA products have an
orchestration interface
to design, administer
and monitor processes;
a workflow to support
the processes; and
integration to many IT
operations tools needed
to support the processes.
302
30. RBAC Role-Based RBAC is a strategy for
Access implementing security
31. RBL Control policy management,
32. RBOC specifically in the area
of authorization. The
idea behind RBAC is
to define roles as sets
of privileges to
different systems that
represent common
access rights for users.
Real-time RBLs hold information
Black-hole about blocked sites,
List or typically used to list
Real-time site that generate spam.
Block List
Regional The local telephone
Bell company in each of the
Operating seven U.S. regions.
Company
303
33. RC Release A version (of software)
34. RCA Candidate that is released before
the final release. A
release candidate may
contain outstanding
issues (or bugs) or
incomplete
functionality. Also
know as a "technical
preview" or "beta
release".
Radio The standard, single-
Corporation ended analog cables
of America used to connect audio
(cables) and video devices to
each other. Typically a
red input is for the left
channel of sound, white
is for the right, and
yellow is for compsite
video.
304
35. RCC Radio A telecommuni-
Common cations common
36. RCM Carrier carrier that provides
37. Rcp radio communications
services but is not
engaged in the
business of providing
landline local
exchange telephone
service.
Revision and HP service - RCM
Configuration collects configuration,
Management revision, and patch
data from your
supported systems
Remote copy A UNIX utility that
copies files over an
Ethernet.
305
38. RCP Rich Minimal set of plug-ins
39. RCS Client needed to build a rich
Platform client application.
40. RCU
Revision Manages multiple revisions
Control of files by automating the
System storage, retrieval, logging,
identification, and merging
of revisions. It's
particularly useful for text
that is revised frequently,
such as programs,
documentation, graphics,
papers, and form letters
Rapid Included with the NetApp
Cloning FlexClone license. RCU is
Utility an integrated cloning and
provisioning utility for
virtual machines that
instantly replicates data
volumes and data sets as
transparent virtual copies
306
41. RDAC Redundant Provides
Disk Array application-
42. RDBA Controller transparent
43. RDBMS protection for array
controller and data
path failures using a
special-purpose
daemon process
and kernel-resident
I/O driver
Remote A standard
Database permitting the
Access exchange of
information
between different
DBMS systems.
Relational RDBMS is a
Database program that lets
Management you create, update,
System and administer a
relational database.
307
44. RDDL Resource Based language for
45. RDF Directory describing a resource
Description directory. A resource
Language directory provides a
text description of
some class of
resources and of other
resources related to
that class. It also
contains a directory of
links to these related
resources
Radio Radio determination
Direction- using the reception of
Finding radio waves for the
purpose of
determining the
direction of a station
or object.
308
46. RDF Resource A specification that
Description defines how metadata,
47. RDI Framework or descriptive
48. RDL information, should be
formatted. The RDF
model uses a subject-
predicate-object format,
which is a standardized
way of describing
something.
Remote A signal transmitted at
Defect the first opportunity in
Indication the outgoing direction
when a terminal detects
specific defects in the
incoming signal.
Report Based industry standard
Definition used to define reports
Language
309
49. RDM Remote An IBM tool
50. RDNS Deployment (formerly called
Manager LANClient Control
Manager, or "LCCM")
that allows systems
administrators to
remotely configure
and deploy operating
systems and
applications on IBM
systems.
Reverse A method of resolving
DNS an IP address into a
domain name, just as
the DNS resolves
domain names into
associated IP
addresses.
310
1. S+ Security+ A CompTIA certification
2. S-Video in vendor-neutral
computer security
training. One of the
required basic
certifications mandated
by DoD Instruction
8570.01-M for ALL
people having access,
either as a military
member or as a civilian
support person.
Super- a technology for
Video / transmitting video
Sony signals over a cable by
Video dividing the video
information into two
separate signals. One
signal for color
(chrominance), and the
other for brightness
(luminance).
311
3. S3 Simple an online storage web
4. SA Storage service offered by
System Amazon Web Services
that first became
available in the US in
March 2006 and in
Europe in November
2007.
System The system
Administrator administrator account
Source- installed with
Active Microsoft SQL Server.
This system
administrator account
has the username "sa".
5 SAA Systems IBM's family of
Application standard interfaces
Architecture which enable software
to be written
independently of
hardware and operating
systems.
312
6. SaaS Software as SaaS is a software
7. SAD a Service distribution model in
8. SAIC which applications are
hosted by a vendor or
service provider and
made available to
customers over a
network.
Security In each IPsec
Association implementation there is
Database a nominal Security
Association Database,
in which each entry
defines the parameters
associated with one
Security Association
Science Founded by J. Robert
Applications Beyster, Ph.D., and a
International small group of scientists
Corporation in 1969, a FORTUNE
500® company
http://www.saic.com
313
9. SALT Speech Lightweight set of
10. SAM Application extensions to existing
Language markup languages, in
Tags particular HTML and
XHTML that enable
multimodal and
telephony access to
information,
applications and Web
services from PCs,
telephones, tablet PCs
and wireless personal
digital assistants
Security An integral subsystem
Account that maintains a
Manager database of information
about user accounts,
including passwords,
any account groups a
given user belongs to,
the access rights each
user is allowed, and
any special privileges a
given user has.
314
11. SAM Serial a serial register built
12. SAM Access into a VRAM to enable
Memory it to transfer large
quantities of data from
the DRAM portion of
the device to a
graphics controller or
frame buffer.
Software A process for making
Asset software acquisition
Management and disposal decisions.
It includes strategies
that identify and
eliminate unused or
infrequently used
software, consolidating
software licenses or
moving toward new
licensing models.
315
13. SAML Security An XML-based
14. SAN Assertion mechanism that
Markup enables disparate
Language entities to exchange
identity-related
security information.
This information is
presented as assertions
about authentication,
authorization or
various attributes of
the identity in
question.
Storage A storage network that
Area consists of two tiers
Network(s)
316
15. SANS SysAdmin, the most trusted
16. SANS Audit, and by far the
Network, largest source for
Security information
security training
and certification in
the world
System Organization that
Administration, develops,
Networking maintains, and
and Security makes available at
institute no cost, the largest
collection of
research documents
about various
aspects of
information
security, and it
operates the
Internet's early
warning system -
Internet Storm
Center.
317
17. SAP Service A logical address that
18. SAP Access allows a system to route
Point data between a remote
device and the
appropriate
communications
support.
Service Novell's Protocol
Advertising provides information
Protocol about what servers are
available on the
network.
318
19. SAP Secondary An NTSC audio
20. SAP Audio channel used for
Program auxiliary
transmission, such as
foreign language
broadcasting or
teletext.
Systeme, A german company
Anwendungen, that produces the
Produkte leading suite of
client-server business
software ("Systems,
Applications and
Products in data
processing").
319