List of computing and IT abbreviations
This is a list of computing and IT acronyms, initialisms and abbreviations.
0-day —Zero-day vulnerability1GL —first-generation programming language1NF —first normal form10B2 —10BASE-210B5 —10BASE-510B-F —10BASE-F10B-FB —10BASE-FB10B-FL —10BASE-FL10B-FP —10BASE-FP10B-T —10BASE-T100B-FX —100BASE-FX100B-TX —100BASE-TX100BVG —100BASE-VG286 —Intel 80286 processor2B1Q —2 binary 1 quaternary2FA —Two-factor authentication2GL —second-generation programming language2NF —second normal form3DES —Triple Data Encryption Standard3GL —third-generation programming language3GPP —3rd Generation Partnership Project – 3G comms3GPP2 —3rd Generation Partnership Project 23NF —third normal form386 —Intel 80386 processor486 —Intel 80486 processor4B5B LF—4-bit 5-bit local fiber4GL —fourth-generation programming language4NF —fourth normal form5GL —fifth-generation programming language5NF —fifth normal form6NF —sixth normal form8B10BLF —8-bit 10-bit local fiber802.11 —wireless LAN8D —Eight disciplines problem solving
A
B
B2B —Business-to-BusinessB2C —Business-to-ConsumerB2E —Business-to-EmployeeBaaS —Backend as a serviceBaaS —Banking as a serviceBaaS —Blockchain as a serviceBAL —Basic Assembly LanguageBAM —Block Availability MapBAN —Body area networkBAS —Building automation systemsBash —Bourne-again shellBASIC —Beginner's All-Purpose Symbolic Instruction CodeBBP —Baseband ProcessorCoBBS —Bulletin Board SystemBC —Business ContinuityBCC —Blind Carbon CopyBCD —Binary Coded DecimalBCD —Boot Configuration DataBCNF —Boyce–Codd normal formBCP —Business continuity planningBCP —Best Current PracticeBCS —British Computer SocietyBE —BackendBEEP —Blocks Extensible Exchange ProtocolBER —Basic Encoding RulesBER —Bit Error RateBFD —Bidirectional Forwarding DetectionBFD —Binary File DescriptorBFS —Breadth-First SearchBFT —Byzantine Fault TolerantBGP —Border Gateway ProtocolBI —Business IntelligenceBIA —Business impact analysisBiDi —Bi-Directionalbin —binaryBINAC —Binary Automatic ComputerBIND —Berkeley Internet Name DomainBIOS —Basic Input Output SystemBJT —Bipolar Junction Transistorbit —binary digitBLISS —Bimodal Lattice Signature SchemeBlob —Binary large objectBlog —Web LogBMP —Basic Multilingual PlaneBNC —Baby Neill ConstantBOINC —Berkeley Open Infrastructure for Network ComputingBOM —Byte Order MarkBOOTP —Bootstrap ProtocolBPA —Oracle Business Process Analysis (BPA) SuiteBPDU —Bridge Protocol Data UnitsBPEL —Business Process Execution LanguageBPL —Broadband over Power LinesBPM —Business Process ManagementBPM —Business Process Modelingbps —bits per secondBRM —Business Reference ModelBRMS —Business Rule Management SystemBRR —Business Readiness RatingBRS —Broadband Radio ServiceBSA —Business Software AllianceBSB —Backside BusBSD —Berkeley Software DistributionBSoD —Blue Screen of DeathBSS —Block Started by SymbolBT —BitTorrentBT —BluetoothB TAM —Basic Telecommunications Access MethodBURS —Bottom-up rewrite systemBW —BandwidthBYOD —Bring Your Own DeviceByte —By eight (group of 8 bits)
C
CA —Certificate authorityCA —Computer Associates International, Inc.CaaS —Content as a serviceCAD —Computer-aided designCAE —Computer-aided engineeringCAID —Computer-aided industrial designCAI —Computer-aided instructionCAM —Computer-aided manufacturingCAN —Campus networkCAP —Consistency availability partition tolerance (theorem)CAPA —Corrective and preventive actiontCAPI —Cryptographic Application Programming InterfaceCAPTCHA —Completely automated public Turing test to tell computers and humans apartCAQ —Computer-aided quality assuranceCASB —Cloud access security brokerCASE —Computer-aided software engineeringCAT —Computer-aided translationCBC —Cipher block chainingCBC-MAC —Cipher block chaining message authentication codeCBPRNG —Counter-based pseudo-random number generatorCBRNG —Counter-based random number generatorcc —C compilerCC —Carbon copyCC —Creative CommonsCCM —Central control moduleCCMP —CCM mode ProtocolCCTV —Closed-circuit televisionCCX —Cisco Compatible eXtensionsCD —Compact DiscCDE —Common Desktop EnvironmentCDMA —Code-division multiple accessCDN —Content delivery networkCDP —Cisco Discovery ProtocolCDP —Continuous data protectionCD-R —CD-RecordableCD-ROM —CD Read-Only MemoryCD-RW —CD-RewritableCDSA —Common Data Security ArchitectureCEI —Comparably efficient interconnectionCER —Canonical Encoding RulesCERT —Computer emergency response teamCES —Consumer Electronics ShowCF —Compact FlashCFB —Cipher feedbackCFD —Computational fluid dynamicsCFF —Compact Font FormatCFG —Context-free grammarCFG —Control-flow graphCG —Computer graphicsCGA —Color graphics arrayCGI —Common Gateway InterfaceCGI —Computer-generated imageryCGT —Computational Graph TheoryCHAP —Challenge-Handshake Authentication ProtocolCHS —Cylinder–head–sectorCIA —Confidentiality, Integrity, Availability[ 1] CICS —Customer Information Control SystemCIDR —Classless inter-domain routingCIFS —Common Internet FilesystemCIM —Common Information ModelCIO —Chief information officerCIP —Critical infrastructure protectionCIR —Committed information rateCIS —Center for Internet SecurityCIS —Centre for Internet and Society (India)CIS —Computer and information scienceCIS —Comodo Internet SecurityCIS —Contact image sensorCIS —Continuous ink systemCISA —Cybersecurity and Infrastructure Security AgencyCISC —Complex-instruction-set computerCISO —Chief information security officerCIT —Center for Information TechnologyCIT —Computer Information TechnologyCJK —Chinese, Japanese, and KoreanCJKV —Chinese, Japanese, Korean, and VietnameseCLI —Command line interfaceCLR —Common Language RuntimeCM —Configuration managementCM —Content managementCMDB —Configuration management databaseCMM —Capability Maturity ModelCMMI —Capability Maturity Model IntegrationCMOS —Complementary metal–oxide–semiconductorCMS —Content management systemCN —Canonical NameCN —Common NameCNC —Computerized numerical controlCNG —Cryptographic Next GenerationCNR —Communications and Networking RiserCOBOL —Common Business-Oriented LanguageCOM —Component Object Model or communicationConfigMgr —Microsoft Configuration ManagerCOOP —Continuity of OperationsCOPE —Corporate-owned, personally enabledCORBA —Common Object Request Broker ArchitectureCORS —Cross-origin resource sharingCOTS —Commercial off-the-shelfCPA —Cell processor architectureCPAN —Comprehensive Perl Archive NetworkCP/CMS —Control Program/Cambridge Monitor SystemCPF —Control Program FacilityCP/M —Control Program/MonitorCPRI —Common Public Radio InterfaceCPS —Characters per secondCPU —Central processing unitCQS —Command–query separationCQRS —Command Query Responsibility SegregationCR —Carriage returnCRAN —Comprehensive R Archive NetworkCRC —Cyclic redundancy checkCRL —Certificate revocation listCRLF —Carriage return line feedCRM —Customer Relationship ManagementCRS —Computer Reservations SystemCRT —Cathode-ray tubeCRUD —Create, read, update and deleteCS —Cable SelectCS —Computer—ScienceCSA —Cloud Security AllianceCSE —Computer science and engineeringCSF —Cybersecurity FrameworkCSi —CompuServeCSI —Common System InterfaceCSM —Compatibility support moduleCSMA/CD —Carrier-sense multiple access with collision detectionCSO —Chief security officerCSP —Cloud service providerCSP —Communicating sequential processesCSP —Cryptographic Service ProviderCSPRNG —Cryptographically secure pseudorandom number generatorCSR —Certificate signing requestCSRF —Cross-site request forgeryCSS —Cascading style sheetsCSS —Content-scrambling systemCSS —Closed-source softwareCSU —Channel service unitCSV —Comma-separated valuesCT —Computerized tomographycTAKES —clinical Text Analysis and Knowledge Extraction SystemCTAN —Comprehensive TeX Archive NetworkCTCP —Client-to-client protocolCTI —Computer telephony integrationCTFE —Compile-time function executionCTL —Computation tree logicCTM —Close To MetalCTR —Counter modeCTS —Clear to sendCTSS —Compatible Time-Sharing SystemCUA —Common User AccessC-V2X —Cellular V2X CVC —Card Verifiable CertificateCVE —Common Vulnerabilities and ExposuresCVS —Concurrent Versions SystemCVSS —Common Vulnerability Scoring SystemCX —Customer experience
D
E
EAAF —Enterprise Architecture Assessment FrameworkEAI —Enterprise Application IntegrationEAP —Extensible Authentication ProtocolEAP-AKA —EAP Authentication and Key AgreementEAP-AKA' —EAP Authentication and Key Agreement primeEAP-EKE —EAP Encrypted Key ExchangeEAP-FAST —EAP Flexible Authentication via Secure TunnelingEAP-GTC —EAP Generic Token CardEAP-IKEv2 —EAP Internet Key Exchange v. 2EAP-MD5 —EAP Message Digest 5EAP-NOOB —Nimble out-of-band authentication for EAPEAP-POTP —EAP Protected One-Time PasswordEAP-PSK —EAP Pre-Shared KeyEAP-PWD —EAP PasswordEAP-SIM —EAP Subscriber Identity ModuleEAP-TLS —EAP Transport Layer SecurityEAP-TTLS —EAP Tunneled Transport Layer SecurityEAS —Exchange ActiveSyncEBCDIC —Extended Binary Coded Decimal Interchange CodeEBML —Extensible Binary Meta LanguageebXML —Electronic Business using eXtensible Markup LanguageEC2 —Amazon Elastic Compute CloudECB —Electronic codebookECC —Elliptic-curve cryptographyECDH —Elliptic-curve Diffie–HellmanECDHE —Elliptic-curve Diffie–Hellman EphemeralECDSA —Elliptic Curve Digital Signature AlgorithmECMA —European Computer Manufacturers AssociationECN —Explicit Congestion NotificationECOS —Embedded Configurable Operating SystemECRS —Expense and Cost Recovery SystemECS —Entity-Component-SystemECU —Electronic control unitEDA —Electronic Design AutomationEDGE —Enhanced Data rates for GSM EvolutionEDI —Electronic Data InterchangeEDO —Extended Data OutEDR —Endpoint detection and responseEDSAC —Electronic Delay Storage Automatic CalculatorEDVAC —Electronic Discrete Variable Automatic ComputerEEPROM —Electronically Erasable Programmable Read-Only MemoryEF —Exposure factorEFF —Electronic Frontier FoundationEFI —Extensible Firmware InterfaceEFM —Eight-to-Fourteen ModulationEFM —Ethernet in the first mileEFS —Encrypting File SystemEGA —Enhanced Graphics ArrayE-mail —Electronic mailEGP —Exterior Gateway ProtocoleID —electronic ID cardEIDE —Enhanced IDEEIGRP —Enhanced Interior Gateway Routing ProtocolEISA —Extended Industry Standard ArchitectureEJBCA —Enterprise JavaBeans Certificate AuthorityEKE —Encrypted key exchangeELF —Extremely Low FrequencyELF —Executable and Linkable FormatELM —ELectronic MailEMACS —Editor MACroSEMCC —Eckert–Mauchly Computer CorporationEMS —Expanded Memory SpecificationENIAC —Electronic Numerical Integrator And ComputerEOF —End of FileEOL —End of LifeEOL —End of LineEOM —End of MessageEOS —End of SupportEPC —Electronic Product CodeEPC —Evolved Packet CoreEPIC —Explicitly Parallel Instruction ComputingEPP —Endpoint protection platformEPROM —Erasable Programmable Read-Only MemoryERD —Entity–Relationship DiagramERGS —Electronic Route Guidance SystemERM —Entity–Relationship ModelERP —Enterprise Resource PlanningeSATA —external SATA ESB —Enterprise service busESCON —Enterprise Systems ConnectionESD —Electrostatic DischargeESI —Electronically Stored InformationESN —Electronic serial numberESP —Encapsulating Security PayloadESR —Eric Steven RaymondESS —Extended service setETDR —Endpoint threat detection and responseETL —Extract, Transform, LoadEtM —Encrypt-then-MACE&M —Encrypt-and-MACETW —Event Tracing for WindowsEUC —Extended Unix CodeEULA —End User License AgreementEWMH —Extended Window Manager HintsEXT —EXTended file systemETA —Estimated Time of ArrivalEV —Extended Validation Certificate
F
FAP —FORTRAN Assembly ProgramFASM —Flat ASseMblerFAST —Flexible Authenication via Secure TunnelingFAT —File Allocation TableFAQ —Frequently Asked QuestionsFBDIMM —Fully Buffered Dual Inline Memory ModuleFC-AL —Fibre Channel Arbitrated LoopFCB —File Control BlockFCS —Frame Check SequenceFDC —Floppy-Disk ControllerFDD —Frequency-Division DuplexingFDD —Floppy Disk DriveFDE —Full disk encryptionFDDI —Fiber Distributed Data InterfaceFDM —Frequency-Division MultiplexingFDMA —Frequency-Division Multiple AccessFDS —Fedora Directory ServerFE —FrontendFEC —Forward Error CorrectionFEMB —Front-End MotherboardFET —Field Effect TransistorFHS —Filesystem Hierarchy StandardFHSS —Frequency-hopping spread spectrumFICON —FIber CONnectivityFIFO —First In First OutFIM —File integrity monitoringFIPS —Federal Information Processing StandardsFIRST —Forum of Incident Response and Security TeamsFISMA —Federal Information Security Management Act of 2002FL —Function LevelFLAC —Free Lossless Audio CodecFLOPS —FLoating-Point Operations Per SecondFLOSS —Free/Libre/Open-Source SoftwareFMC —Fixed Mobile Convergence "Mobile UC or Unified Communications over Wireless"FOLDOC —Free On-line Dictionary of ComputingFORTRAN —Formula TranslationFOSDEM —Free and Open-source Software Developers' European MeetingFOSI —Formatted Output Specification InstanceFOSS —Free and Open-Source SoftwareFP —Function ProgrammingFP —Functional ProgrammingFPGA —Field-programmable gate arrayFPS —Floating Point SystemsFPU —Floating-Point UnitFRR [ 4] [ 5] FRU —Field-Replaceable UnitFS —File SystemFS —Forward secrecyFSB —Front-Side Busfsck —File System CheckFSF —Free Software FoundationFSM —Finite State MachineFTP —File Transfer ProtocolFTPS —FTP-SSL or FTP SecureFTTC —Fiber To The CurbFTTH —Fiber To The HomeFTTP —Fiber To The PremisesFQDN —Fully Qualified Domain NameFUD —Fear Uncertainty DoubtFWS —Folding White SpaceFXP —File eXchange ProtocolFYI —For Your Information
G
G11N —GlobalizationGas —GNU AssemblerGb —GigabitGB —GigabyteGbps —Gigabits per secondGC —Garbage collectionGCC —GNU Compiler CollectionGCJ —GNU Compiler for JavaGCM —Galois/Counter ModeGCP —Google Cloud PlatformGCR —Group Coded RecordingGDB —GNU DebuggerGDI —Graphics Device InterfaceGDPR —General Data Protection RegulationGFDL —GNU Free Documentation LicenseGIF —Graphics Interchange FormatGIGO —Garbage In, Garbage OutGIMP —GNU Image Manipulation ProgramGIMPS —Great Internet Mersenne Prime SearchGIS —Geographic Information SystemGLUT —OpenGL Utility ToolkitGML —Geography Markup LanguageGNOME —GNU Network Object Model EnvironmentGNU —GNU's Not UnixGnuPG or GNU —GNU Privacy GuardGnuTLS —GNU Transport Layer SecurityGOMS —Goals, Operators, Methods, and Selection rulesGPASM —GNU PIC ASseMblerGPFS —General Parallel File SystemGPG —GNU Privacy GuardGPGPU —General-Purpose Computing on Graphics Processing UnitsGPIB —General-Purpose Instrumentation BusGPL —General Public LicenseGPL —General-Purpose LanguageGPO —Group Policy ObjectGPRS —General Packet Radio ServiceGPT —GUID Partition TableGPU —Graphics Processing UnitGRASP —General Responsibility Assignment Software PatternsGRE —Generic routing encapsulationGRUB —Grand Unified Boot-LoaderGERAN —GSM EDGE Radio Access NetworkGSM —Global System for Mobile CommunicationsGTC —Generic Token CardGTK /GTK+—GIMP Toolkit[ 6] GUI —Graphical user interfaceGUID —Globally Unique IDentifierGWT —Google Web Toolkit
H
HA —High availabilityHAL —Hardware Abstraction LayerHAN —Home networkHASP —Houston Automatic Spooling PriorityHBA —Host Bus AdapterHCI —Human—Computer InteractionHD —High DensityHDD —Hard Disk DriveHCL —Hardware Compatibility ListHD DVD —High Definition DVDHDL —Hardware Description LanguageHDMI —High-Definition Multimedia InterfaceHECI —Host Embedded Controller InterfaceHF —High FrequencyHFS —Hierarchical File SystemHHD —Hybrid Hard DriveHID —Human Interface DeviceHIDS —Host-based intrusion detection systemHIG —Human Interface GuidelinesHIPS —Host-based intrusion prevention systemHIRD —Hurd of Interfaces Representing DepthHLASM —High Level ASseMblerHLR —Home location registerHLS —HTTP Live StreamingHMA —High Memory AreaHMAC —Hash-based message authentication codeHOTP —HMAC-based one-time passwordHP —Hewlett-PackardHPC —High-Performance ComputingHPFS —High Performance File SystemHSDPA —High-Speed Downlink Packet AccessHTC —High-Throughput ComputingHSM —Hardware security moduleHSM —Hierarchical storage managementHT —Hyper ThreadingHTM —Hierarchical Temporal MemoryHTML —Hypertext Markup LanguageHTTP —Hypertext Transfer ProtocolHTTPd —Hypertext Transport Protocol DaemonHTTPS —HTTP SecureHTX —HyperTransport eXpansionHURD —Hird of Unix-Replacing DaemonsHVD —Holographic Versatile DiscHz —Hertz
I
J
J2EE —Java 2 Enterprise EditionJ2ME —Java 2 Micro EditionJ2SE —Java 2 Standard EditionJAAS —Java Authentication and Authorization ServiceJAXB —Java Architecture for XML BindingJAX-RPC —Jakarta XML (formerly Java XML) for Remote Procedure CallsJAXP —Java API for XML ProcessingJBOD —Just a Bunch of DisksJCE — Java Cryptography ExtensionJCL —Job Control LanguageJCP —Java Community ProcessJDBC —Java Database ConnectivityJDK —Java Development KitJEE —Java Enterprise EditionJES —Job Entry SubsystemJDS —Java Desktop SystemJFC —Java Foundation ClassesJFET —Junction Field-Effect TransistorJFS —IBM Journaling File SystemJINI —Jini Is Not InitialsJIT —Just-In-TimeJME —Java Micro EditionJMX —Java Management ExtensionsJMS —Java Message ServiceJNDI —Java Naming and Directory InterfaceJNI —Java Native InterfaceJNZ —Jump non-zeroJPEG —Joint Photographic Experts GroupJRE —Java Runtime EnvironmentJS —JavaScriptJSE —Java Standard EditionJSON —JavaScript Object NotationJSP —Jackson Structured ProgrammingJSP —JavaServer PagesJTAG —Joint Test Action GroupJVM —Java Virtual MachineJWE —JSON Web EncryptionJWS —JSON Web SignatureJWT —JSON Web Token
K
K&R —Kernighan and RitchieK8s —KubernetesKb —KilobitKB —KeyboardKB —KilobyteKB —Knowledge BaseKbps —Kilobits per secondKC —Keyboard computerKDC —Key distribution centerKDE —K Desktop EnvironmentKDF —Key derivation functionKEK —Key encryption keykHz —KilohertzKiB —KibibyteKINK —Kerberized Internet Negotiation of KeysKML —Keyhole Markup LanguageKPOP —Kerberized Post Office ProtocolKRACK —Key Reinstallation AttackKPK —Key production keyKRL —Knowledge Representation LanguageKVM —Keyboard, Video, Mouse
L
L10N —LocalizationL2TP —Layer 2 Tunneling ProtocolLACP —Link Aggregation Control ProtocolLAMP —Linux Apache MySQL PerlLAMP —Linux Apache MySQL PHPLAMP —Linux Apache MySQL PythonLAN —Local Area NetworkLBA —Logical Block AddressingLB —Load BalancerLBAC —Lattice-based access controlLCD —Liquid Crystal DisplayLCDP —Low-code development platformLCOS —Liquid Crystal On SiliconLCR —Least Cost RoutingLDAP —Lightweight Directory Access ProtocolLDIF —LDAP Data Interchange FormatLE —Logical ExtentsLEAP —Lightweight Extensible Authentication ProtocolLED —Light-Emitting DiodeLF —Line FeedLF —Low FrequencyLFS —Linux From ScratchLGA —Land Grid ArrayLGPL —Lesser General Public LicenseLIB —LIBraryLIF —Low Insertion ForceLIFO —Last In First OutLILO —Linux LoaderLISP —LISt ProcessingLKML —Linux Kernel Mailing ListLM —Lan ManagerLOC —Lines of CodeLPC —Lars Pensjö CLPI —Linux Professional InstituteLPT — Line Print TerminalLRU —Least Recently UsedLSB —Least Significant BitLSB —Linux Standard BaseLSI —Large-Scale IntegrationLTE —Long Term EvolutionLTL —Linear Temporal LogicLTR —Left-to-RightLUG —Linux User GroupLUN —Logical Unit NumberLV —Logical VolumeLVD —Low Voltage DifferentialLVM —Logical Volume ManagementLZW —Lempel-Ziv-Welch
M
N
NAC —Network access controlNACK —Negative ACKnowledgementNAIC —National Infrastructure Advisory CouncilNAK —Negative AcKnowledge CharacterNaN —Not a NumberNAP —Network Access ProtectionNAPT —Network address and port translationNAS —Network access serverNAS —Network-attached storageNASM —Netwide ASseMblerNAT —Network address translationNAT-T —Network address translator traversalNBO —Northbound interfaceNCDP —No-code development platformNCP —NetWare Core ProtocolNCQ —Native Command QueuingNCR —National Cash RegisterNCSA —National Center for Supercomputing ApplicationsNDIS —Network Driver Interface SpecificationNDP —Neighbor Discovery ProtocolNDPS —Novell Distributed Print ServicesNDS —Novell Der irectory ServicesNEP —Network Equipment ProviderNetBIOS —Network Basic Input/Output SystemNetBT —NetBIOS over TCP/IPNEXT —Near-End CrossTalkNFA —Nondeterministic Finite AutomatonNFC —Near-field communicationNFS —Network File SystemNGFW —Next-generation firewallNGSCB —Next-Generation Secure Computing BaseNI —National InstrumentsNIC —Network Interface Controller or Network Interface CardNIDS —Network intrusion detection systemsNIM —No Internal MessageNIO —Non-blocking I/ONIPS —Network-based intrusion prevention systemNIST —National Institute of Standards and TechnologyNLE —Non-Linear Editing systemNLP —Natural Language ProcessingNLS —Native Language SupportNMI —Non-Maskable InterruptNNRP —Network News Reader ProtocolNNTP —Network News Transfer ProtocolNOC —Network Operations CenterNOOB —Nibble out-of-band authenticationNOP —No OPerationNOS —Network Operating SystemNP —Nondeterministic Polynomial timeNPL —Netscape Public LicenseNPPD —National Protection and Programs DirectorateNPTL —Native POSIX Thread LibraryNPU —Network Processing UnitNS —NetscapeNSIS —Nullsoft Scriptable Install SystemNSN —Network service nameNSPR —Netscape Portable RuntimeNSS —Novell Storage ServiceNSS —Network Security ServicesNSS —Name Service SwitchNT —New TechnologyNTFS —New Technology File SystemNTLM —New Technology LAN ManagerNTP —Network Time ProtocolNUM|A —Non-Uniform Memory AccessNURBS —Non-Uniform Rational B-SplineNUT —Network UPS ToolsNVD —National Vulnerability DatabaseNVMe —NVM ExpressNVR —Network Video RecorderNVRAM —Non-Volatile Random-Access MemoryNX —No-execute
O
OASIS —Organization for the Advancement of Structured Information StandardsOAS —Oracle Advanced SecurityOAT —Operational Acceptance TestingOAuth —Open AuthorizationOBSAI —Open Base Station Architecture InitiativeOCR —Optical Character RecognitionOCSP —Online Certificate Status ProtocolODBC —Open Database ConnectivityOEM —Original Equipment ManufacturerOES —Open Enterprise ServerOFDM —Orthogonal frequency-division multiplexingOFTC —Open and Free Technology CommunityOFX —Open Financial eXchangeOID —Object IdentifierOKV —Oracle Key VaultOLAP —Online Analytical ProcessingOLE —Object Linking and EmbeddingOLED —Organic Light Emitting DiodeOLPC —One Laptop per ChildOLTP —Online Transaction ProcessingOMF —Object Module FormatOMG —Object Management GroupOMR —Optical Mark ReaderOMTP —Open Mobile Terminal PlatformONS —Oracle Net ServicesooRexx —Open Object RexxOO —Object-OrientedOO —OpenOfficeOOE —Out-of-Order ExecutionOOM —Out Of MemoryOOo —OpenOffice.orgOoOE —Out-of-Order ExecutionOOP —Object-Oriented ProgrammingOOTB —Out of the boxOPML —Outline Processor Markup LanguageORB —Object Request BrokerORBS —Open Relay Behavior-modification SystemORM —Object–Relational MappingOS —Open SourceOS —Operating SystemOSCON —O'Reilly Open Source CONventionOSDN —Open Source Development NetworkOSI —Open Source InitiativeOSI —Open Systems InterconnectionOSINT —Open source intelligenceOSPF —Open Shortest Path FirstOSS —Open Sound SystemOSS —Open-source softwareOSS —Operations Support SystemOSTG —Open Source Technology GroupOT —Operational technologyOTP —One-time passwordOUI —Organizationally Unique IdentifierOV —Organization validationOVAL —Open Vulnerability and Assessment LanguageOWASP —Open Worldwide Application Security ProjectOWE —Opportunistic Wireless Encryption
P
Q
QA —Quality assuranceQC —Quality controlQC —Quick ChargeQDR —Quad Data RateQEMU —Quick EmulatorQFP —Quad Flat PackageQIF —Quicken Interchange FormatQoS —Quality of ServiceQOTD —Quote of the DayQSOP —Quarter-size small-outline packageQt —a cross-platform application development framework for creating graphical user interfaces as well as applications that run on various software and hardware platformsQTAM —Queued Teleprocessing Access Method
R
S
T
TAO —Track-At-OnceTACACS —Terminal Access Controller Access-Control SystemTAP —Test Access PortTAPI —Telephony Application Programming InterfaceTASM —Turbo ASseMblerTAXII —Trusted Automated eXchange of Indicator InformationTB —TeraByteTcl —Tool Command LanguageTCM —The Computer MuseumTCP —Transmission Control ProtocolTCP/IP —Transmission Control Protocol/Internet ProtocolTCSEC —Trusted Computer System Evaluation CriteriaTCU —Telecommunication Control Unit|TDE —Transparent data encryptionTDEA —Triple Data Encryption AlgorithmTDES —Triple Data Encryption StandardTDMA —Time-Division Multiple AccessTDP —Thermal Design PowerTEAP —Tunnel Extensible Authentication ProtocolTEE —Trusted execution environmentTFT —Thin-Film TransistorTFTP —Trivial File Transfer ProtocolTGS —Ticket Granting ServiceTGT —Ticket Granting TicketTHE —The Hessling EditorTI —Texas InstrumentsTIFF —Tagged Image File FormatTKIP —Temporal Key Integrity ProtocolTLA —Three-Letter AcronymTLD —Top-Level DomainTLS —Thread-Local StorageTLS —Transport Layer SecurityTLV —Type—length—valueTM —Translation memoryTMM —Testing Maturity Modeltmp —temporaryTMS —Translation management systemTNC —Terminal Node ControllerTNC —Threaded Neill-Concelman connectorTOCTOU, TOCTTOU or TOC/TOU —Time-of-check to time-of-useTOTP —Time-based one-time passwordTPF —Transaction Processing FacilityTPM —Trusted Platform ModuleTROFF —Trace OffTRON —Trace OnTRON —The Real-time Operating system NucleusTRSDOS —Tandy Radio Shack – Disk Operating SystemTS —TimestampTSIG —Transaction signatureTSO —Time Sharing OptionTSP —Traveling Salesman ProblemTSR —Terminate and Stay ResidentTTF —TrueType FontTTL —Transistor—Transistor LogicTTLS —Tunneled Transport Layer SecurityTTL —Time To LiveTTP —Tesla Transport ProtocolTTP —Time-Triggered ProtocolTTP —Trusted third partyTTS —Text-to-SpeechTTY —TeletypeTUCOWS —The Ultimate Collection of Winsock SoftwareTUG —TeX Users GroupTURN —-Traversal Using Relays around NAT TWAIN —Technology Without An Interesting Name
U
UAAG —User Agent Accessibility GuidelinesUAC —User Account ControlUART —Universal Asynchronous Receiver/TransmitterUAS —Unmanned aircraft systemUAT —User Acceptance TestingUAV —Unmanned aerial vehicleUB —Undefined BehaviorUBA —User behavior analyticsUCS —Universal Character SetUDDI —Universal Description, Discovery, and IntegrationUDMA —Ultra DMAUDP —User Datagram ProtocolUEBA —User and entity behavior analyticsUEFI —Unified Extensible Firmware InterfaceUEM —Unified endpoint managementUHF —Ultra High FrequencyUI —User InterfaceUIMA —Unstructured Information Management ArchitectureUL —UploadULA —Uncommitted Logic ArrayULSI —Ultra Large Scale IntegrationUMA —Upper Memory AreaUMB —Upper Memory BlockUML —Unified Modeling LanguageUML —User-Mode LinuxUMPC —Ultra-Mobile Personal ComputerUMTS —Universal Mobile Telecommunications SystemUNC —Universal Naming ConventionUNIVAC —Universal Automatic Computer (By MKS)UPS —Uninterruptible Power Supply or Uninterrupted Power SupplyURI —Uniform Resource IdentifierURL —Uniform Resource LocatorURN —Uniform Resource NameUSB —Universal Serial BusUS-CERT —United States Computer Emergency Readiness Teamusr —User System ResourcesUSR —U.S. RoboticsUTC —Coordinated Universal TimeUTF —Unicode Transformation FormatUTM —Unified Threat ManagementUTP —Unshielded Twisted PairUTRAN —Universal Terrestrial Radio Access NetworkUUCP —Unix to Unix CopyUUID —Universally Unique IdentifierUVC —Universal Virtual ComputerUWP —Universal Windows PlatformUX —User Experience
V
V2X —Vehicle-to-everythingvar —variableVaR —Value at riskVAX —Virtual Address eXtensionVB —Visual BasicVBA —Visual Basic for ApplicationsVBS —Visual Basic ScriptVCPI —Virtual Control Program InterfaceVDC —Virtual data centerVDE —Virtual Desktop EnvironmentVDI —Virtual Desktop InfrastructureVDM —Virtual DOS machineVDS —Virtual dedicated serverVDSL —Very High Bitrate Digital Subscriber LineVDU —Visual Display UnitVDX —Virtual Desktop eXtenderVESA —Video Electronics Standards AssociationVFAT —Virtual File Allocation TableVFO —Variable-frequency oscillatorVFS —Virtual File SystemVHD —Virtual Hard DiskVG —Volume GroupVGA —Video Graphics ArrayVHF —Very High FrequencyVLAN —Virtual Local Area NetworkVLB —Vesa Local BusVLF —Very Low FrequencyVLIW —Very Long Instruction WordVLSI —Very-Large-Scale IntegrationVLSM —Variable-length subnet maskingVM —Virtual MachineVM —Virtual MemoryVMM —Virtual Machine MonitorVNC —Virtual Network ComputingVOD —Video On DemandVoIP —Voice over Internet ProtocolVoLTE —Voice Over Long Term EvolutionVPC —Virtual private cloudVPN —Virtual private networkVPS —Virtual private serverVPU —Visual Processing UnitVR —Virtual RealityVRAM —Video Random-Access MemoryVRML —Virtual Reality Modeling LanguageVSAM —Virtual Storage-Access MethodVSAT —Very Small Aperture TerminalVT —Video TerminalVTAM —Virtual Telecommunications Access MethodVTL —Virtual Tape Library
W
W3C —World Wide Web ConsortiumWAF —Web application firewallWAFS —Wide Area File ServicesWAI —Web Accessibility InitiativeWAIS —Wide Area Information ServerWAN —Wide Area NetworkWAP —Wireless Access PointWAP —Wireless Application ProtocolWASM —Watcom ASseMblerWAVE —Wireless access in vehicular environmentsWBEM —Web-Based Enterprise ManagementWBS —Work breakdown structureWCAG —Web Content Accessibility GuidelinesWCF —Windows Communication FoundationWDDM —Windows Display Driver ModelWDM —Wavelength-Division MultiplexingWDM —Windows Driver ModelWebDAV —WWW Distributed Authoring and VersioningWEP —Wired Equivalent PrivacyWFI —Wait For InterruptWIDE —Widely Integrated Distributed EnvironmentWIDS —Wireless intrusion detection systemWiMAX —Worldwide Interoperability for Microwave AccessWinFS —Windows Future StorageWinRT —Windows RunTimeWINS —Windows Internet Name ServiceWIPS —Wireless intrusion prevention systemWLAN —Wireless Local Area NetworkWMA —Windows Media AudioWMI —Windows Management InstrumentationWMV —Windows Media VideoWNS —Windows Push Notification ServiceWOL —Wake-on-LANWOR —Wake-on-RingWORA —Write once, run anywhereWORE —Write once, run everywhereWORM —Write Once Read ManyWPA —Wi-Fi Protected AccessWPAD —Web Proxy Autodiscovery ProtocolWPAN —Wireless Personal Area NetworkWPF —Windows Presentation FoundationWPS —Wi-Fi Protected SetupWS-D —Web Services Dynamic DiscoveryWSDL —Web Services Description LanguageWSFL —Web Services Flow LanguageWTLS —Wireless Transport Layer SecurityWUSB —Wireless Universal Serial BusWWAN —Wireless Wide Area NetworkWWDC —Apple World Wide Developer ConferenceWWID —World Wide IdentifierWWN —World Wide NameWWW —World Wide WebWYSIWYG —What You See Is What You GetWZC —Wireless Zero Configuration
X
XACML —eXtensible Access Control Markup LanguageXAML —eXtensible Application Markup LanguageXCBL —XML Common Business LibraryXCCDF —eXtensible Configuration Checklist Description FormatXDM —X Window Display ManagerXDMCP —X Display Manager Control ProtocolXDR —eXtended detection and responseXHTML —eXtensible Hypertext Markup LanguageXILP —X Interactive ListProcXML —eXtensible Markup LanguageXMMS —X Multimedia SystemXMPP —eXtensible Messaging and Presence ProtocolXMS —eXtended Memory SpecificationXNS —Xerox Network SystemsXP —Cross-PlatformXP —eXtreme ProgrammingXPCOM —Cross Platform Component Object ModelXPI —XPInstallXPIDL —Cross-Platform IDLXPS —XML Paper SpecificationXSD —XML Schema DefinitionXSL —eXtensible Stylesheet LanguageXSL-FO —eXtensible Stylesheet Language Formatting ObjectsXSLT —eXtensible Stylesheet Language TransformationsXSRF —Cross-site request forgeryXSS —Cross-Site ScriptingXTACACS —eXtended Terminal Access Controller Access-Control SystemXTF —eXtensible Tag FrameworkXTF —eXtended Triton FormatXUL —XML User Interface LanguageXVGA —eXtended Video Graphics Adapter
Y
Y2K —Year Two ThousandY2K38 —Year Two Thousand Thirty EightYACC —Yet Another Compiler CompilerYAGNI —You Aren't Gonna Need ItYAML —YAML Ain't Markup LanguageYARN —Yet Another Resource NegotiatorYaST —Yet another Setup Tool
Z
ZCAV —Zone Constant Angular VelocityZCS —Zero Code SuppressionZIF —Zero Insertion ForceZIFS —Zero Insertion Force SocketZIP —ZIP file archiveZISC —Zero Instruction Set ComputerZOI —Zero One InfinityZOPE —Z Object Publishing EnvironmentZMA —Zone Multicast AddressZPL —Z-level Programming Language
See also
References
External links
