Bravo Reference: IT Acronyms & Abbreviations

by Sam C. Chan

First Published: January 20, 2002
Last Revised:  February 19, 2012

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This is a brief list of common and essential IT industry acronyms and abbreviations. It was created for browsing through or reading in its entirety, by advanced users or junior practitioners. It is not intended to be a comprehensive reference. The value of this list is in the selection of items. The actual definitions and in-depth relevant information can easily be looked up elsewhere.

This document covers only common IT industry-specific jargons. See also:

Memo on Bravo-Specific Acronyms & Abbreviations

Acronym Translation
ACL Access Control List (computer security)
ACPI Advanced Configuration & Power Interface
ADSL Asymmetric Digital Subscriber Line
AGP Accelerated Graphics Port
AHCI Advanced Host Controller Interface (SATA)
AIM AOL Instant Messenger
AMPS Advanced Mobile Phone Service
AMR Audio Modem Riser (replaced by CNR)
ANSI American National Standards Institution
API Application Program Interface
ARP Address Resolution Protocol
ASCII American Standard Code for Information Interchange
ASP Application Service Provider
ASP Active Server Page
ASPI Advanced SCSI Programming Interface
ATA AT Attachment
ATX Advanced Technology eXtended (power supplies)
ATAPI AT Attachment Packet Interface
AVI Audio Video Interleave
BER Bit Error Rate
BEST Bravo Elite Service Team
BGP Border Gateway Protocol (Internet routing)
BIND Berkeley Internet Named Domain
BIOS Basic Input/Output System (soon to be succeeded by EFI)
BRI Basic Rate Interface (ISDN)
CBT Computer Based Training
cc Country Code (aka: ccTLD)
CAL Client Access License (to add "seats" to a server product)
CDMA Code Division Multiple Access
CDN Content Delivery Network
CF Compact Flash
CGI Common Gateway Interface (webdev)
CIR Consumer Infra-Red receiver
CLR Common Language Runtime (.NET)
CMS Content Management System
CNR Communications & Networking Riser (replaces AMR)
DAT Digital Audio Tape
DCE Data Communications Equipment
DDNS Dynamic DNS
DDOS Distributed Denial of Service (attack)
DDR Double Data Rate
DHCP Dynamic Host Configuration Protocol
DHTML Dynamic Hyper-Text Markup Language
DIMM Dual In-Line Memory Module
DLT Digital Linear Tape
DMA Direct Memory Access
DMCA Digital Millennium Copyright Act
DMZ DeMilitarized Zone
DNS Domain Name Server
DNSBL DNS Blacklist (List SPAM sources by IP)
DOS Denial of Service (attack)
DPI Dots Per Inch
DRAM Dynamic RAM
DRM Digital Rights Management
DSL Digital Subscriber Line
DSP Digital Signal Processor
DVI Digital Video Interface
DVMT Dynamic Video Memory Technology
ECC Error Checking & Correcting
EDI Electronic Data Interchange
EFI Extensible Firmware Interface (successor for BIOS)
EFSMicrosoft Encrypted File System
EFSAmazon Elastic File System
EHCI Enhanced Host Controller Interface
EOL End of Life
ERP Enterprise Resource Planning
FAQ Frequently Asked Questions
FAT File Allocation Table
FC-PGA Flip-Chip Pin Grid Array
FDDI Fiber Distributed Data Interface
FLOP FLoating Point Operation
FQDN Fully-Qualified Domain Name
FRS Family Radio Service
FSB Front Side Bus
FTP File Transfer Protocol
GIF Graphics Interchange Format
GMRS General Mobile Radio Service
GNU GNU's Not Unix
GPL GNU Public License
GPS Global Positioning System
GPT GUID Partition Table (successor to MBR)
GSM Global System for Mobile Communications
HDML Handheld Devices Markup Language
HECI Host Embedded Controller Interface (Intel AMT Management Engine)
HPNA Home Phone line Network Association
HTML Hyper-Text Markup Language
HTTP Hyper-Text Transfer Protocol
ICANN Internet Corporation for Assigned Names and Numbers
ICE Internet Content & Exchange Standard
ICMP Internet Control Message Protocol
IGMP Internet Group Management Protocol
IDE Integrated Drive Electronics
IEEE Institute of Electrical & Electronics Engineers
IGMP Internet Group Multicast Protocol
IIS Internet Information Server
IMAP Internet Message Access Protocol
IP Internet Protocol
IPsec IP Security (encryption standard)
IRC Internet Relay Chat
IRDA InfraRed Data Association
ISDN Integrated Services Digital Network
ISO International Standards Organization
ISP Internet Service Provider
IT Information Technology   see article on the origin of the term
ITU International Telecommunications Union
JBOD Just a Bunch Of Disks (drive spanning)
JPEG Joint Photographic Experts Group
KDE K Desktop Environment
KVM Keyboard, Video & Mouse
L2TP Layer 2 Tunneling Protocol (VPN)
LAMP Linux, Apache, MySQL and PHP (sometimes Perl or Python)
LAN Local Area Network
LBA Logical Block Addressing
LCD Liquid Crystal Display
LDAP Lightweight Directory Access Protocol
LED Light Emitting Diode
LTO Linear Tape-Open
LUA Limited User Account (see also UAC)
LUN Logical Unit Number
LVD Low Voltage Differential
MAC Media Access Control
MAPI Messaging API
MBR Master Boot Record
MDAC Microsoft Data Access Componets
Medium-Dependent Interface
Medium-Dependent Interface, Crossover
MIDI Musical Instrument Digital Interface
MIME Multi-purpose Internet Mail Extensions
MMC Microsoft Management Console
MMC MultiMedia Card
MMX Matrix Math Extensions
MSP Managed Service Provider
MSS Managed Security Service
MPEG Motion Picture Experts Group
MTA Message Transfer Agent
MTBF Mean Time Between Failures
NAC Network Access Control
NAP Network Access Protection
NAS Network Attached Storage
NDA Non-Disclosure Agreement
NFS Network File System
NLA Network Level Authentication
NLA Network Location Awareness
NOS Network Operating System
NTFS New Technology File System
NTSC National Television Standards Committee (TV signal standard)
OCSP Online Certificate Status Protocol (check cert exp.)
ODBC Open DataBase Connectivity
ODM Original Design Manufacturer
OEM Original Equipment Manufacturer
OLED Organic LED
OSI Open Systems Interconnection
PAN Personal Area Network
PBX Private Branch Exchange
PCI Payment Card Industry Compliance
PCI Peripheral Component Interconnect Intel hardware standard
PCIe PCI Express (formerly 3GIO)
PCI-X A variant of PCI with 133MHz & 266MHz bus
PCL Printer Control Language
PCMCIA Personal Computer Memory Card Interface Association
PCS Personal Communications Services
PDA Personal Digital Assistant
PDF Portable Document Format
PE Pre-installation Environment (XP, Vista, etc.)
PGP Pretty Good Privacy
PKI Public Key Infrastructure
PNG Portable Network Graphics (file format)
POP Post Office Protocol, also POP3 (the current version)
POP Point of Presence (ISP)
PPGA Plastic Pin Grid Array
PPP Point-to-Point Protocol
PPTP Point to Point Tunneling Protocol (VPN)
PRI Primary Rate Interface (ISDN)
PROM Programmable Read Only Memory
PXE Preboot eXecution Environment ("pixie")
QoS Quality-of-Service (prioritization scheme)
RAID Redundant Array of Inexpensive Drives
RAM Random Access Memory (as opposed to sequential)
RAM Read/Write Memory (originally RWM, a homonym, a very common and now accepted mistake)
RAS Remote Access Services
RDP Remote Desktop Protocol (see also: TS)
RF Radio Frequency
RFC Request For Comments
RGB Red-Green-Blue
RMON Remote Monitoring
RPC Remote Procedure Call
RSVP ReSerVation Protocol
SaaS Software-as-a-Service
SAN Storage Area Network
SBC Server-based Computing
SCSI Small Computer Systems Interface
SD Secure Digital (memory card)
SDK Software Developer's Kit
SECC Single Edge Contact Cartridge (started by Pentium II)
SEO Search Engine Optimization
SID Security Identifier
SIMM Single In-Line Memory Module (see also: DIMM)
SLA Service Level Agreement
SLIP Serial Line Internet Protocol
SMART Self Monitoring, Analysis and Reporting Technology (hard drive)
SMB Server Message Block (aka: CIFS)
SMTP Simple Mail Transport Protocol
SNMP Simple Network Management Protocol
SoDIMM Small Outline DIMM (notebook memory form factor)
SOA Service-Oriented Architecture
SOHO Small Office / Home Office
SPD Serial Presence Data (memory module standard)
SPF Sender Policy Framework (email)
SPI Stateful Packet Inspection (firewall)
SQL Structured Query Language (database)
SSL Secure Socket Layer (https:// protocol, Internet session encryption)
TAPI Telephony API
TCP Transmission Control Protocol
TDMA Time Division Multiple Access
TFT Thin Film Transistor ("active" LCD technology)
TFTP Trivial FTP
TIFF Tag Image File Format
TLD Top Level Domain
TLS Transport Layer Security (successor to SSL)
TS Terminal Services (see also RDP)
UAC User Account Control (Vista)
UDP User Datagram Protocol
UEFI Unified Extensible Firmware Interface (successor to BIOS)
UNC Universal Naming Convention (e.g.: \\host\share\dir\doc.ext)
UPS Uninterruptible Power Supply
URL Uniform Resource Locator (xxx://yyy/zzz)
USB Universal Serial Bus (interface)
UTP Unshielded Twisted Pair (cable)
VAR Value-Added Reseller
VBA Visual Basic for Applications
VBR Variable Bit Rate
VCD Video CD
VDI Virtual Desktop Infrastructure
VGA Video Graphics Array
VLSI Very Large Scale Integration
VoIP Voice Over IP
VPN Virtual Private Network
WAN Wide Area Network
WAP Wireless Application Protocol
WBT Web Based Training
WEP Wired Equivalent Privacy
Wi-Fi IEEE 802.x standards for WLAN
WLAN Wireless LAN
WPA Wi-Fi Protected Access (successor to WEP)
WWW World Wide Web
XML eXtensible Markup Language
XMPP Extensible Messaging and Presence Protocol (formerly Jabber)
XPS XML Paper Specification
ZIF Zero Insertion Force

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