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CompTia Acronym Database
Acronyms and Definitions
274
Computer Science
11/08/2011
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Term
AC
 Definition
 alternating current
Term
ACPI
 Definition
advanced configuration and power interface
Term
ACT
 Definition
activity
Term
ADSL
 Definition
asymmetrical digital subscriber line
Term
AGP
 Definition
accelerated graphics port
Term
AMD
 Definition
advanced micro devices
Term
AMR
 Definition
audio modem riser
Term
APIPA
 Definition
automatic private Internet protocol addressing
Term
APM
 Definition
advanced power management
Term
ARP
 Definition
address resolution protocol
Term
ASR
 Definition
automated system recovery
Term
AT
 Definition
advanced technology
Term
ATA
 Definition
advanced technology attachment
Term
ATAPI
 Definition
advanced technology attachment packet interface
Term
ATM
 Definition
asynchronous transfer mode
Term
ATX
 Definition
advanced technology extended
Term
BIOS
 Definition
basic input/output system
Term
BNC
 Definition
Bayonet-Neill-Concelman or British Navel Connector
Term
BSOD
 Definition
Blue Screen Of DEATH!
Term
BTX
 Definition
balanced technology extended
Term
CD
 Definition
compact disc
Term
CDFS
 Definition
compact disc file system
Term
CD-ROM
 Definition
compact disc-read-only memory
Term
CD-RW
 Definition
compact disc-rewritable
Term
CFS
 Definition
Central file system, common file system, or command file system
Term
CMOS
 Definition
complementary metal-oxide semiconductor
Term
COMx
 Definition
communicaion port (x=port #)
Term
CPU
 Definition
central processing unit
Term
CRT
 Definition
cathode-ray tube
Term
DAC
 Definition
discretionary access control
Term
DB-9
 Definition
9-pin D shell connector
Term
DB-25
 Definition
25-pin serial communications D-shell connector
Term
DC
 Definition
direct current
Term
DDOS
 Definition
distributed denial of service
Term
DDR
 Definition
double data-rate
Term
DDR RAM
 Definition
double data-rate random access memory
Term
DDR SDRAM
 Definition
double data-rate symmetric dynamic random access memory
Term
DFS
 Definition
distributed file system
Term
DHCP
 Definition
dynamic host configuration protocol
Term
DIMM
 Definition
dual inline memory module
Term
DIN
 Definition
Deutsche Idustrie Norm
Term
DIP
 Definition
dual inline package
Term
DLP
 Definition
digital light processing
Term
DLT
 Definition
digital linear tape
Term
DMA
 Definition
direct memory access
Term
DMZ
 Definition
demilitarized zone
Term
DNS
 Definition
domain name service or server
Term
DOS
 Definition
denial of service
Term
DPMS
 Definition
display power management signaling
Term
DRAM
 Definition
 dynamic random access memory
Term
DSL
 Definition
digital subscriber line
Term
DVD
 Definition
digital (video or versatile) disc
Term
DVD-R
 Definition
 digital video disc recordable
Term
DVD-RAM
 Definition
digital versatile disc-random access memory
Term
DVD-ROM
 Definition
digital video disc read only memory
Term
DVD-RW
 Definition
digital video disc rewritable
Term
DVI
 Definition
digital visual interface
Term
ECC
 Definition
error correction code
Term
ECP
 Definition
extended capabilities port
Term
EEPROM
 Definition
electrically erasable programmable read-only memory
Term
EFS
 Definition
encrypting file system
Term
EIDE
 Definition
enhanced integrated drive electronics
Term
EMI
 Definition
electromagnetic interference
Term
EMP
 Definition
electromagnetic pulse
Term
EPP
 Definition
enhanced parallel port
Term
EPROM
 Definition
erasable programmable read-only memory
Term
ERD
 Definition
emergency repair disk
Term
ESD
 Definition
electrostatic discharge
Term
EVDO
 Definition
evolution data optimized (or only)
Term
EVGA
 Definition
extended video graphics adapter/array
Term
FAT
 Definition
file allocation table
Term
FAT12
 Definition
12-bit file allocation
Term
FAT16
 Definition
16-bit file allocation
Term
FAT32
 Definition
32-bit file allocation table
Term
FDD
 Definition
floppy disk drive
Term
Fn
 Definition
function
Term
FPM
 Definition
fast page-mode
Term
FQDN
 Definition
fully qualified domain name
Term
FRU
 Definition
field replacable unit
Term
FTP
 Definition
file transfer protocol
Term
Gb
 Definition
gigabit
Term
GB
 Definition
gigabyte
Term
GDI
 Definition
graphics device interface
Term
GHz
 Definition
gigahertz
Term
GPS
 Definition
 global positioning system
Term
GSM
 Definition
global system for mobil communication
Term
GUI
 Definition
graphical user interface
Term
HAL
 Definition
hardware extraction layer
Term
HCL
 Definition
hardware compatibility list
Term
HDD
 Definition
Hard Disk Drive
Term
HDMi
 Definition
high definition media interface
Term
HPFS
 Definition
high performance file system
Term
HTML
 Definition
hypertext markup language
Term
HTTP
 Definition
hypertext transfer protocol
Term
HTTPS
 Definition
hypertext transfer protocol over secure sockets layer
Term
ICMP
 Definition
Internet control message protocol
Term
ICR
 Definition
intelligent character recognition
Term
IDE
 Definition
intergrated drive electronics
Term
IEEE
 Definition
Institute of Electrical and Electronic Engineers
Term
IIS
 Definition
Internet information server
Term
IMAP
 Definition
 Internet mail access protocol
Term
I/O
 Definition
 input/output
Term
IP
 Definition
Internet protocol
Term
IPCONFIG
 Definition
 Internet protocol configuration
Term
IPP
 Definition
Internet printing protocol
Term
IPSEC
 Definition
Internet protocol security
Term
IPX
 Definition
internetwork packet exchange
Term
IR
 Definition
infared
Term
IrDA
 Definition
infared data association
Term
IRQ
 Definition
interrupt request
Term
ISA
 Definition
Industry standard architecture
Term
ISDN
 Definition
integrated services digital network
Term
ISO
 Definition
Industry standard organization
Term
JBOD
 Definition
 just a bunch of disks
Term
Kb
 Definition
kilobit
Term
KB
 Definition
kilobyte or knowledge base
Term
LAN
 Definition
local area network
Term
LBA
 Definition
logical block addressing
Term
LC
 Definition
Lucent connector
Term
LCD
 Definition
liquid crystal display
Term
LDAP
 Definition
lightweight directory access protocol
Term
LED
 Definition
light emitting diode
Term
Li-ion
 Definition
lithium-ion
Term
LPD/LPR
 Definition
 line printer daemon/ line printer remote
Term
LPT
 Definition
line printer terminal
Term
LPT1
 Definition
 line printer terminal 1
Term
LVD
 Definition
low voltage differential
Term
MAC
 Definition
media access control / mandatory access control
Term
MAPI
 Definition
messaging application programming interface
Term
MAU
 Definition
media access unit, media attachment unit
Term
Mb
 Definition
megabit
Term
MB
 Definition
megabyte
Term
MBR
 Definition
master boot record
Term
MBSA
 Definition
Microsoft Baseline Security Analyzer
Term
MFD
 Definition
multifunction device
Term
MFP
 Definition
multifunction product
Term
MHz
 Definition
megahertz
Term
MicroDIMM
 Definition
micro dual inline memory module
Term
MIDI
 Definition
musical instrument digital interface
Term
MIME
 Definition
multipurpose Internet mail extension
Term
MLI
 Definition
multiple link interface
Term
MMC
 Definition
Microsoft management console
Term
MMX
 Definition
multimedia extensions
Term
MP3
 Definition
Moving Picture Experts Group Layer 3 Audio
Term
MP4
 Definition
Moving Picture Experts Group Layer 4
Term
MPEG
 Definition
Moving Picture Experts Group
Term
MSCONFIG
 Definition
 Microsoft configuration
Term
MSDS
 Definition
material safety data sheet
Term
MUI
 Definition
multilingual user interface
Term
NAC
 Definition
network access control
Term
NAS
 Definition
network-attached storage
Term
NAT
 Definition
network address translation
Term
NetBIOS
 Definition
networked basic input/output system
Term
NetBEUI
 Definition
networked basic input/output system extended user interface
Term
NIC
 Definition
 network interface card
Term
NiCd
 Definition
nickel cadmium
Term
NiMH
 Definition
nickel metal hydride
Term
NLX
 Definition
new low-profile extended
Term
NNTP
 Definition
 network news transfer protocol
Term
NTFS
 Definition
new technology file system
Term
NTLDR
 Definition
 new technology loader
Term
OCR
 Definition
optical character recognition
Term
OEM
 Definition
original equipment manufacturer
Term
OS
 Definition
operating system
Term
PAN
 Definition
personal area network
Term
PATA
 Definition
 parallel advanced technology attachment
Term
PC
 Definition
personal computer
Term
PCI
 Definition
peripheral component interconnect
Term
PCIe
 Definition
peripheral component interconnect express
Term
PCIX
 Definition
peripheral component interconnect extended
Term
PCL
 Definition
printer control language
Term
PCMCIA
 Definition
Personal Computer Memory Card International Association
Term
PDA
 Definition
personal digital assistant
Term
PGA
 Definition
pin grid array
Term
PGA2
 Definition
pin grid array 2
Term
PIN
 Definition
personal identification number
Term
PKI
 Definition
public key infrastructure
Term
PnP
 Definition
plug n' play
Term
POP3
 Definition
post office protocol 3
Term
POST
 Definition
power-on self test
Term
POTS
 Definition
plain old telephone service
Term
PPP
 Definition
point-to-point protocol
Term
PPTP
 Definition
point-to-point tunneling protocol
Term
PRI
 Definition
primary rate interface
Term
PROM
 Definition
programmable read-only memory
Term
PS/2
 Definition
personal system/2 connector
Term
PSTN
 Definition
public switched telephone network
Term
PSU
 Definition
power supply unit
Term
PVC
 Definition
permanent virtual circuit
Term
PXE
 Definition
preboot execution environment
Term
QoS
 Definition
quality of service
Term
RAID
 Definition
redundant array of independent (or inexpensive ) disks
Term
RAM
 Definition
random access memory
Term
RAS
 Definition
remote access service
Term
RDRAM
 Definition
RAMBUS dynamic random access memory
Term
RF
 Definition
radio frequency
Term
RFI
 Definition
 radio frequency interference
Term
RGB
 Definition
 red green blue
Term
RIMM
 Definition
RAMBUS inline memory module
Term
RIP
 Definition
routing information protocol
Term
RIS
 Definition
remote installation service
Term
RISC
 Definition
reduced instruction set computer
Term
RJ
 Definition
registered jack
Term
RJ-11
 Definition
registered jack function 11
Term
RJ-45
 Definition
registered jack function 45
Term
RMA
 Definition
returned materials authorization
Term
ROM
 Definition
read-only memory
Term
RS-232
 Definition
recommended standard 232
Term
RTC
 Definition
real-time clock
Term
SAN
 Definition
storage area network
Term
SATA
 Definition
serial advanced technology attachment
Term
SC
 Definition
subscription channel
Term
SCP
 Definition
secure copy protection
Term
SCSI
 Definition
small computer system interface
Term
SCSI ID
 Definition
small computer system interface identifier
Term
SD card
 Definition
secure digital card
Term
SDRAM
 Definition
symmetric dynamic random access memory
Term
SEC
 Definition
single edge connector
Term
SFC
 Definition
system file checker
Term
SGRAM
 Definition
synchronous graphics random access memory
Term
SIMM
 Definition
single inline memory module
Term
SLI
 Definition
scalable link interface ; system level integration; or scanline interleave mode
Term
S.M.A.R.T.
 Definition
self-monitoring, analysis, and reporting technology
Term
SMB
 Definition
server message block or small midsize business
Term
SMTP
 Definition
simple mail transport protocol
Term
SNMP
 Definition
simple network management protocol
Term
SoDIMM
 Definition
small outline dual inline memory module
Term
SP
 Definition
service pack
Term
SP1; SP2; SP3; SP4;
 Definition
service pack (1, 2, 3, 4,)
Term
SPDIF
 Definition
Sony-Phillips digital interface format
Term
SPGA
 Definition
staggered pin grid array
Term
SPX
 Definition
sequenced package exchange
Term
SRAM
 Definition
static random access memory
Term
SSH
 Definition
secure shell
Term
SSID
 Definition
service set identifier
Term
SSL
 Definition
secure sockets layer
Term
ST
 Definition
straight tip
Term
STP
 Definition
 sheilded twisted pair
Term
SVGA
 Definition
super video graphics array
Term
SXGA
 Definition
super extended graphics array
Term
TB
 Definition
terabyte
Term
TCP
 Definition
transmission control protocol
Term
TCP/IP
 Definition
transmission control protocol / internet protocol
Term
TDR
 Definition
time domain reflectometer
Term
TFTP
 Definition
 trivial file transfer protocol
Term
UAC
 Definition
user access control
Term
UART
 Definition
universal asynchronous receiver transmitter
Term
UDF
 Definition
user-defined functions; universal disk format; or universal data format
Term
UDMA
 Definition
ultra direct memory access
Term
UDP
 Definition
user datagram protocol
Term
UNC
 Definition
universal naming convention
Term
UPS
 Definition
uninterruptible power supply
Term
URL
 Definition
uniform resource locator
Term
USB
 Definition
universal serial bus
Term
USMT
 Definition
user state migration tool
Term
UTP
 Definition
unsheilded twisted pair
Term
UXGA
 Definition
ultra extended graphics array
Term
VESA
 Definition
Video Electronics Standards Association
Term
VFAT
 Definition
 virtual file allocation table
Term
VGA
 Definition
video graphics array
Term
VoIP
 Definition
voice over internet protocol
Term
VPN
 Definition
 virtual private network
Term
VRAM
 Definition
video random access memory
Term
WAN
 Definition
wide area network
Term
WAP
 Definition
wireless application protocol
Term
WEP
 Definition
wired equivalent privacy
Term
WIFI
 Definition
wireless fidelity
Term
WINS
 Definition
Windows Internet name service
Term
WLAN
 Definition
wireless local area network
Term
WPA
 Definition
wireless protected access
Term
WUXGA
 Definition
wide ultra extended graphics array
Term
XGA
 Definition
extended graphics array
Term
ZIF
 Definition
zero-insertion-force
Term
ZIP
 Definition
 zigzag inline package