acronyms.comp revision 1.319
1$NetBSD: acronyms.comp,v 1.319 2021/01/21 18:09:10 kamil Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABI application binary interface 8ABNF augmented backus-naur form 9ABR available bit rate 10ABRT automatic bug reporting tool 11AC alternating current 12ACI adjacent channel interferer 13ACID atomicity, consistency, isolation, durability 14ACK Amsterdam compiler kit 15ACK acknowledgement 16ACL access control list 17ACL active current loop 18ACL asynchronous connection less 19ACP auxiliary control {process,program} 20ACPI advanced configuration and power interface 21ACS access control set 22ACU automatic calling unit 23ADB Apple desktop bus 24ADC analog [to] digital converter 25ADD acronym driven development 26ADDDC adaptive double DRAM device correction 27ADO active data objects 28ADP automatic data processing 29ADPCM adaptive differential pulse code modulation 30ADS alternate data stream 31ADSL asymmetric digital subscriber line 32ADT abstract data type 33AEDC advanced error detection and correction 34AER advanced error reporting 35AES Advanced Encryption Standard 36AFP Apple Filing Protocol 37AFS Andrew File System 38AGC automatic gain control 39AGP accelerated graphics port 40AI analog input 41AI artificial intelligence 42AL access list 43AL active link 44ALE address latch enable 45ALS ambient light sensor 46ALSA advanced Linux sound architecture 47ALU arithmetic and logical unit 48ALUA asymmetric logical unit access 49AM access method 50AM alignment mask 51AM amplitude modulation 52AMD Advanced Micro Devices Inc 53AMDD Agile model-driven development 54AMI alternate mark inversion 55AMP asymmetric multiprocessing 56AMQP advanced message queuing protocol 57AMT active management technology 58AN Arabic number 59ANR application not responding 60ANSI American National Standards Institute 61AO analog output 62AOC add-on card 63AOL Alert-on-LAN 64AOS add or subtract 65AOT ahead of time 66AP access point 67AP application processor 68APFS Apple file system 69API application programming interface 70APEI ACPI platform error interface 71APIC advanced programmable interrupt controller 72APIPA automatic private IP addressing 73APM advanced power management 74APM application performance management 75APU accelerated processing unit 76APT advanced persistent threat 77AQM active queue management 78ARAT always running APIC timer 79ARC adaptive replacement cache 80ARC Advanced RISC Computing 81ARC automatic reference counting 82ARM Advanced RISC Machines 83ARP Address Resolution Protocol 84ARPA Advanced Research Projects Agency 85ARQ automatic repeat request 86ARR address range register 87ARU audio response unit 88AS autonomous system 89ASA Adaptive Security Appliance 90ASAN Address Sanitizer 91ASC advanced smart cache 92ASCII American Standard Code for Information Interchange 93ASD agile software development 94ASE advanced software environment 95ASF alert standard format 96ASIC application-specific integrated circuit 97ASK amplitude shift keying 98ASLR address space layout randomization 99ASN autonomous system number 100ASP active server pages 101ASP auxiliary storage pool 102ASPM active state power management 103ASQ automated software quality 104ASR address space register 105ASR Apple software restore 106AST abstract syntax tree 107AST asynchronous system trap 108AT access time 109AT advanced technology 110ATA advanced technology attachment 111ATAPI advanced technology attachment packet interface 112ATC address translation cache 113ATF ARM trusted firmware 114ATF automated testing framework 115ATM asynchronous transfer mode 116ATX advanced technology extended 117AV anti virus 118AVB audio video bridging 119AVL Adelson-Velsky-Landis 120AVX advanced vector extensions 121AWDL Apple wireless direct link 122BA byte align 123BAL basic assembly language 124BAR base address register 125BBS bulletin board system 126BCC blind carbon copy 127BCD binary coded decimal 128BCH boot console handler 129BCR byte count register 130BCS base configuration space 131BD baud 132BDD binary decision diagram 133BDI bit deinterleave 134BDUF big design up front 135BEDO burst extended data output 136BER basic encoding rules 137BER bit error {rate,ratio} 138BERT boot error record table 139BFD bidirectional forwarding detection 140BFD binary {file,format} descriptor 141BFKL big fscking kernel lock 142BFS breadth-first search 143BFT binary file transfer 144BGA ball grid array 145BGP Border Gateway Protocol 146BGPSEC BGP Security 147BIND Berkeley Internet Name Daemon 148BIOS Basic Input/Output System 149BIOS built-in operating system 150BIST built-in self-test 151BIU bus interface unit 152BKDG BIOS and kernel developer's guide 153BLAS basic linear algebra subprograms 154BLC back light control 155BLE Bluetooth low energy 156BLOB binary large object 157BM bus master 158BMC baseboard management controller 159BMP basic multilingual plane 160BMP bitmap image file 161BMIC bus master interface controller 162BN boundary neutral 163BNF Backus-Naur form 164BO binary output 165BOF beginning of file 166BOM beginning of message 167BOM byte order mark 168BP base pointer 169BP boot processor 170BPB BIOS parameter block 171BPDU bridge protocol data unit 172BPF Berkeley Packet Filter 173BPI bits per inch 174BPM business process modelling 175BPS bits per second 176BPSK binary phase shift keying 177BQS Berkeley quality software 178BRE basic regular expression 179BS backspace 180BS binary sequence 181BSA basic service area 182BSD Berkeley Software Distribution 183BSDP Boot Service Discovery Protocol 184BSF bit scan forward 185BSOD blue screen of death 186BSP binary space partition 187BSP board support package 188BSP bootstrap processor 189BSR bit scan reverse 190BSS basic service set 191BSS block started by symbol 192BSSID basic service set identifier 193BT BitTorrent 194BT Bluetooth 195BT bit test 196BTC bit test [and] complement 197BTM bus transport mechanism 198BTR bit test [and] reset 199BTS bit test [and] set 200BTS bug tracking system 201BW bandwidth 202BWM block-write mode 203BUAG big ugly ASCII graphic 204CA certificate authority 205CACLS change access control lists 206CAD computer-aided design 207CAM computer assisted manufacturing 208CAM conditional access module 209CAM content addressable memory 210CARP Common Address Redundancy Protocol 211CAS column address strobe 212CAS compare and swap 213CAS computer algebra system 214CASE computer aided software engineering 215CAU control access unit 216CAV constant angular velocity 217CBC cipher block chaining 218CBR constant bit rate 219CC carbon copy 220CCC Chaos Computer Club 221CCD charge coupled device 222CCI co-channel interferer 223CCNUMA cache-coherent non-uniform memory access 224CCTL command completion time limit 225CD cache disable 226CD compact disc 227CDDA compact disc digital audio 228CDL compiler description language 229CDMA code division multiple access 230CDN content delivery network 231CDP Cisco Discovery Protocol 232CDRAM cache dynamic random access memory 233CER canonical encoding rules 234CE customer edge 235CF compact flash 236CFB cipher feedback 237CFG context-free grammar 238CFG control-flow graph 239CFI control-flow integrity sanitizer 240CG control gate 241CGA Color Graphics Adapter 242CGI common gateway interface 243CGN Carrier-Grade NAT 244CHAP Challenge-Handshake Authentication Protocol 245CHFS chip file system 246CHS cylinder/head/sector 247CI continuous integration 248CI {common,component} interface 249CIA confidentiality, integrity, availability 250CIDR Classless Inter-Domain Routing 251CIF common intermediate format 252CIFS Common Internet File System 253CIL common intermediate language 254CIR carrier-to-interference ratio 255CIS contact image sensor 256CISC complex instruction set {computer,computing} 257CJK Chinese, Japanese, [and] Korean 258CLF common log format 259CLI command line interface 260CLI common language infrastructure 261CLR common language runtime 262CLS common language specification 263CLTT closed loop thermal throttling 264CLUT color look-up table 265CLV constant linear velocity 266CM configuration management 267CMA concert multithread architecture 268CMC chassis management controller 269CMC corrected machine check 270CMS {configuration,content,course} management system 271CMI control {management,method} interface 272CMOS complementary metal-oxide-semiconductor 273CMP chip multi-processing 274CMS content management system 275CMYK cyan magenta yellow black 276CN {common,canonical} name 277CNC computer numerical control 278CNR carrier-to-noise ratio 279COA change of authority 280COF current operating frequency 281COFDM coded orthogonal frequency division multiplexing 282COFF common object file format 283COM component object model 284COM computer on module 285COMA cache-only memory architecture 286CORBA common object request broker architecture 287COS class of service 288COW copy-on-write 289CP continuous pilot 290CPA chosen-plaintext attack 291CPB core performance boost 292CPC central processor complex 293CPC cpu performance counters 294CPE common phase error 295CPE common platform enumeration 296CPER common platform error record 297CPG clock pulse generator 298CPI cycles per instruction 299CPL current privilege level 300CPLD complex programmable logic device 301CPP C preprocessor 302CPS characters per second 303CPS continuation-passing style 304CPT command pass through 305CPU central processing unit 306CR carriage return 307CRC cyclic redundancy check 308CRL carrier recovery loop 309CRLF carriage return line feed 310CSU C start up 311CRT cathode ray tube 312CRTP curiously recurring template pattern 313CRUD create, read, update, and delete 314CS cable select 315CS chip select 316CS code segment 317CS computer science 318CSDL {common,conceptual} schema definition language 319CSI channel state information 320CSI common system interface 321CSMA carrier sense multiple access 322CSMA/CA carrier sense multiple access with collision avoidance 323CSMA/CD carrier sense multiple access with collision detection 324CSP communicating sequential processes 325CSP content security policy 326CSP constrain satisfaction problems 327CSP cryptographic service provider 328CSR control [and] status registers 329CSRG Computer Systems Research Group 330CSS cascading style sheets 331CST common spanning tree 332CSV comma-separated values 333CTF compact c type format 334CTM close to metal 335CTR counter [mode] 336CTS clear to send 337CTS common type system 338CUA common user access 339CUT coordinated universal time 340CV control voltage 341CVE common vulnerabilities and exposures 342CVS Concurrent Versions System 343DA destination address 344DAA distributed application architecture 345DAAP digital audio access protocol 346DAB digital audio broadcasting 347DAC digital [to] analog converter 348DAC discretionary access control 349DAD duplicate address detection 350DANE DNS-based Authentication of Named Entities 351DAO disk at once 352DAP Directory Access Protocol 353DAT digital audio tape 354DAT dynamic acceleration technology 355DB database 356DBA database administrator 357DBA dynamic bandwidth allocation 358DBB data bus buffer 359DBC design by contract 360DBL dynamic buffer limiting 361DBMS database management system 362DBS database server 363DC data center 364DC direct current 365DCC Direct Client-to-Client 366DCC direct cable connect 367DCD data carrier detect 368DCE data control equipment 369DCE distributed computing environment 370DCIM data center infrastructure management 371DCIM digital camera images 372DCL Digital Command Language 373DCOM distributed component object model 374DCOP Desktop COmmunication Protocol 375DCS data collection systems 376DCT discrete cosine transform 377DCU data cache unit 378DDC display data channel 379DDE dynamic data exchange 380DDI device drivers interface 381DDK device driver kit 382DDL data description language 383DDR double data rate 384DDS direct digital sound 385DDWG Digital Display Working Group 386DE debugging extensions 387DE desktop environment 388DEA data encryption algorithm 389DEC Digital Equipment Corporation 390DEK data encryption key 391DEP data execution prevention 392DER distinguished encoding rules 393DES Data Encryption Standard 394DF don't fragment 395DFA deterministic finite automaton 396DFC data flow control 397DFS depth first search 398DFS distributed file system 399DFSAN Data Flow Sanitizer 400DFT diagnostic function test 401DFT discrete Fourier transform 402DGL data generation language 403DGEMM double precision general matrix multiply 404DH Diffie-Hellman 405DHCP Dynamic Host Configuration Protocol 406DIA dedicated Internet access 407DIB device independent bitmap 408DIFS distributed inter-frame space 409DIMM dual inline memory module 410DIRT design in real time 411DKI driver/kernel interface 412DL diode logic 413DL discrete logarithm 414DL download 415DLCI data link connection identifier 416DLE data link escape 417DLL dynamic link library 418DLNA digital living network alliance 419DLP discrete logarithm problem 420DMA direct memory access 421DMI desktop management interface 422DMS document management system 423DMT discrete multitone modulation 424DMU data management layer 425DNARD Digital network appliance reference design 426DND drag and drop 427DNLC directory name lookup cache 428DNS Domain Name System 429DNSSEC DNS Security Extensions 430DOE distributed object environment 431DOF data over fibre 432DOM document object model 433DOS denial of service 434DOS disk operating system 435DP DisplayPort 436DPC deferred procedure call 437DPCM differential pulse code modulation 438DPD dead peer detection 439DPI deep packet inspection 440DPI dots per inch 441DPL descriptor privilege level 442DPS Display PostScript 443DPST display power savings technology 444DRAAS disaster recovery as a service 445DRAM dynamic random access memory 446DRBG deterministic random bit generator 447DRI direct rendering infrastructure 448DRM digital rights management 449DRRS display refresh rate switching 450DS debug store 451DS differentiated services 452DS9000 DeathStation 9000 453DS9K DeathStation 9000 454DSA digital signature algorithm 455DSAP destination service access point 456DSB double-sideband modulation 457DSCP differentiated services code point 458DSDT differentiated system descriptor table 459DSF device special file 460DSL dataset and snapshot layer 461DSL digital subscriber line 462DSL domain specific language 463DSLAM digital subscriber line access multiplexer 464DSN delivery status notification 465DSO dynamic shared object 466DSP digital signal processor 467DSSS direct sequence spread spectrum 468DTB device tree blob 469DTC device tree compiler 470DTD document type definition 471DTE data terminal equipment 472DTE dumb terminal emulator 473DTL diode-transistor logic 474DTLS datagram transport layer security 475DTS device tree source 476DTS digital thermal sensor 477DUT device under test 478DVB digital video broadcasting 479DVCS distributed version control system 480DVD digital versatile disc 481DVFS dynamic voltage and frequency scaling 482DVI device independent 483DVI Digital Visual Interface 484DVR digital video recorder 485E-XER extended XML encoding rules 486EABI embedded-application binary interface 487EAI Email Address Internationalization 488EAI Enterprise Application Integration 489EAP Extensible Authentication Protocol 490EAPOL EAP over Lan 491EAV entity-attribute-value model 492EAV ethernet audio/video bridging 493EBCDIC Extended Binary Coded Decimal Interchange Code 494EBDA Extended BIOS Data Area 495EBNF extended backus-naur form 496EBR extended boot record 497EC elliptic curve 498ECC elliptic curve cryptography 499ECC error correction code 500ECDH elliptic curve Diffie-Hellman 501ECDL elliptic curve discrete logarithm 502ECDLP elliptic curve discrete logarithm problem 503ECDSA elliptic curve digital signature algorithm 504ECL emitter-coupled logic 505ECN explicit congestion notification 506ECP enhanced capability port 507ECS enhanced chip set 508ECS extended configuration space 509EDAC error detection and correction 510EDAT enhanced dynamic acceleration technology 511EdDSA Edwards curve digital signature algorithm 512EDGE explicit data graph execution 513EDID extended display identification data 514EDO extended data out 515EDS electronical data sheet 516EDSAC electronic delay storage automatic calculator 517EDVAC electronic discrete variable automatic computer 518EEE energy efficient ethernet 519EEPROM electrically erasable programmable read only memory 520EFI extensible firmware interface 521EFL emitter follower logic 522EFM eight to fourteen modulation 523EFS extent file system 524EGA Enhanced Graphics Adapter 525EGP exterior gateway protocol 526EH extension header 527EIDE enhanced IDE 528EISA extended industry standard architecture 529EINJ error injection table 530ELF executable and linking format 531ELS entry level system 532EMI electro-magnetic interference 533EMP electro-magnetic pulse 534EMR electro-magnetic radiation 535EMACS Editor MACroS 536ENIAC electronic numerical integrator and computer 537EOF end of file 538EOI end of interrupt 539EOIS end of interactive support 540EOL end of life 541EOL end of line 542EOT end of transmission 543EPIC explicitly parallel instruction computing 544EPP enhanced parallel port 545EPRML extended partial response, maximum likelihood 546EPROM erasable programmable read only memory 547EPT extended page tables 548ERC error recovery control 549ERD emergency recovery disk 550ERD entity relationship diagram 551ERE extended regular expression 552ERST error record serialization table 553ESAN Efficiency Sanitizer 554ESB enterprise service bus 555ESDI enhanced small disk interface 556ESDRAM enhanced synchronous dynamic random access memory 557ESI enclosure services interface 558ESS electronic switching system 559ESS extended service set 560ESSID extended service set identifier 561EST enhanced speedstep 562ETL extract, transform, load 563EU execution unit 564EULA end user license agreement 565FAT file allocation table 566FBRAM frame buffer random access memory 567FCIF full common intermediate format 568FCL fiber channel loop 569FCS frame check sequence 570FDC floppy disk controller 571FDD floppy disk drive 572FDDI fiber distributed data interface 573FDE full disk encryption 574FDT flattened device tree 575FEA finite element analysis 576FEC forward error correction 577FET field-effect transistor 578FF finite field 579FF form feed 580FFDH finite-field Diffie-Hellman 581FFH functional fixed hardware 582FFI foreign function interface 583FFM focus follows mouse 584FFS Fast File System 585FFS find first set 586FFT fast Fourier transform 587FG floating gate 588FHRP first hop redundancy protocol 589FHSS frequency hop spread spectrum 590FID frequency identifier 591FIFO first in, first out 592FILO first in, last out 593FIPS Federal Information Processing Standards 594FIR fast infrared 595FLOPS floating [point] operations per second 596FLOSS free/libre/open source software 597FM frequency modulation 598FMR false match rate 599FOSS free/open source software 600FPGA field programmable gate array 601FPM fast page mode 602FPR floating point register 603FPU floating point unit 604FQDN fully qualified domain name 605FRR false rejection rate 606FRU field replaceable unit 607FS file system 608FSB front side bus 609FSCK file system check 610FSF Free Software Foundation 611FSK frequency shift keying 612FSM finite-state machine 613FTA fault tree analysis 614FTL flash translation layer 615FTP File Transfer Protocol 616FTPS File Transfer Protocol Secure 617FTTH fiber to the home 618FUS fast user switching 619FWH firmware hub 620FWS folding white space 621GAL generic array logic 622GARP generic attribute registration protocol 623GAS generic address structure 624GC garbage collector 625GCM Galois counter mode 626GCR group-coded recording 627GDI Graphics Device Interface 628GDT global descriptor table 629GECOS general comprehensive operating supervisor 630GEM graphics environment manager 631GEM graphics execution manager 632GEMM general matrix multiply 633GENA general event notification architecture 634GHC Glasgow Haskell compiler 635GHES generic hardware error source 636GIC generic interrupt controller 637GID group identifier 638GIF graphics interchange format 639GLBP gateway load balancing protocol 640GMCH graphics and memory controller hub 641GNU GNU's Not Unix 642GOP graphics output protocol 643GOT global offset table 644GPE general purpose event 645GPF general protection fault 646GPG GNU Privacy Guard 647GPL [GNU] General Public License 648GPR general purpose register 649GPS generalized processor sharing 650GPT GUID partition table 651GPU graphics processing unit 652GR golden ratio 653GRE generic routing encapsulation 654GSI global system interrupt 655GUI graphical user interface 656GUID globally unique identifier 657GVFS git virtual file system 658HA high availability 659HAL hardware abstraction layer 660HAT hashed array tree 661HATEOAS hypermedia as the engine of application state 662HBA host bus adapter 663HCF halt and catch fire 664HCI host controller interface 665HCI human-computer interaction 666HCL hardware compatibility list 667HDCP High-bandwidth Digital Content Protection 668HDD hard disk drive 669HDL hardware description language 670HDMI High-Definition Multimedia Interface 671HDTV high-definition television 672HECI host embedded controller interface 673HEST hardware error source table 674HEVC high efficiency video coding 675HF high frequency 676HFM highest frequency mode 677HFS hierarchical file system 678HID human interface device 679HKP HTTP Keyserver Protocol 680HLL high-level language 681HMA high memory area 682HMI human-machine interface 683HOOD hierarchical object oriented design 684HP Hewlett-Packard 685HPC high performance computing 686HPD hot plug detection 687HPET high precision event timer 688HSM hardware security module 689HSM hierarchical storage management 690HSRP hot standby router protocol 691HT hyper-threading 692HTC hardware thermal control 693HTCC high temperature co-fired ceramic 694HTML HyperText Markup Language 695HTT hyper-threading technology 696HTTP Hypertext Transfer Protocol 697HTTPS Hypertext Transfer Protocol Secure 698HVM hardware virtual machine 699HVDS High-Voltage Differential Signaling 700HWASAN Hardware-assisted Address Sanitizer 701HZ Hertz 702I2O intelligent input/output 703IA information assurance 704IAAS infrastructure as a service 705IANA Internet Assigned Numbers Authority 706IBC iterated block cipher 707IBM International Business Machines 708IBPI international blinking pattern interpretation 709IBS instruction based sampling 710IBSS independent basic service set 711IC integrated circuit 712ICA independent computer architecture 713ICACLS integrity control access control lists 714ICB Internet Citizen's Band 715ICE in-circuit emulator 716ICE internal compiler error 717ICH I/O controller hub 718ICMP Internet Control Message Protocol 719ICT information and communications technology 720ICW initialization command word 721IDA Intel dynamic acceleration 722IDCMP Intuition direct communication message port 723IDCT inverse discrete cosine transform 724IDE integrated development environment 725IDE integrated drive electronics 726IDPS intrusion detection [and] prevention system 727IDRP inter-domain routing protocol 728IDS intrusion detection system 729IDT interrupt descriptor table 730IE Internet Explorer 731IEC International Electrotechnical Commission 732IEEE Institute of Electrical and Electronics Engineers 733IESG Internet Engineering Steering Group 734IETF Internet Engineering Task Force 735IF intermediate frequency 736IFCM isochronous flow control mode 737IFF Interchange File Format 738IFS internal field separator 739IGD Internet gateway device 740IGMP Internet Group Management Protocol 741IGP interior gateway protocol 742IHV independent hardware vendor 743IKE Internet key exchange 744ILM internal loopback mode 745ILOM integrated lights-out management 746ILP instruction level parallelism 747IM instant messaging 748IME input method editor 749IMAP Internet Message Access Protocol 750IMC integrated memory controller 751IMCR interrupt mode configuration register 752IMR interrupt mask register 753IMS information management system 754IMSI international mobile subscriber identity 755INCITS InterNational Committee for Information Technology Standards 756INODE index node 757IO input/output 758IOCTL input/output control 759IOM input/output managers 760IOMMU input/output memory management unit 761IOT Internet of Things 762IP Internet Protocol 763IP intellectual property 764IPC instructions per cycle 765IPC interprocess communication 766IPCF interprocess communication facility 767IPE integrated programming environment 768IPI intelligent peripheral interface 769IPI interprocessor interrupt 770IPL Initial Program Load 771IPL Interrupt Priority Level 772IPMB Intelligent Platform Management Bus 773IPMI Intelligent Platform Management Interface 774IPNG Internet Protocol, Next Generation 775IPS in-plane switching 776IPS intrusion prevention system 777IPSEC Internet Protocol Security 778IRC Internet Relay Chat 779IRDA infrared data association 780IRDP ICMP Router Discovery Protocol 781IRQ interrupt request 782IRQL interrupt request level 783IRR interrupt request register 784IRTF Internet Research Task Force 785IS information system 786ISA industry standard architecture 787ISA instruction set architecture 788ISE instant secure erase 789ISDN integrated services digital network 790ISI inter-symbol interference 791ISL initial system load 792ISM industrial, scientific, [and] medical 793ISMS information system management system 794ISN initial serial number 795ISO International Standards Organization 796ISOC Internet Society 797ISP Internet service provider 798ISR in-service register 799ISR interrupt service routine 800IST internal spanning tree 801IST interrupt stack table 802ISV independent software vendor 803IT information technology 804ITB Intel Turbo Boost 805ITIL information technology infrastructure library 806ITP in-target probe 807ITSM IT service management 808IV initialization vector 809IVT interrupt vector table 810JBOD just a bunch of disks 811JCL Job Control Language 812JFET junction [gate] field-effect transistor 813JIT just in time 814JPEG Joint Photographic Experts Group 815JRE Java Runtime Environment 816JSON JavaScript Object Notation 817JTAG joint test action group 818KASLR kernel address space layout randomization 819KB keyboard 820KB kilobyte 821KBD keyboard 822KBD kilobaud 823KCS keyboard controller style 824KLOC thousand lines of code 825KMS kernel-mode setting 826KPI kernel programming interface 827KVA kernel virtual address 828KVM kernel virtual machine 829KVM kernel virtual memory 830KVM keyboard, video, [and] mouse 831L2CAP link layer control and adaptation protocol 832LAG link aggregation group 833LAMP Linux Apache MySQL {Perl,PHP,Python} 834LAN local area network 835LAPIC local advanced programmable interrupt controller 836LAR load access rights 837LBA logical block addressing 838LBNF labeled backus-naur form 839LBS location-based service 840LCD liquid crystal display 841LCP link control protocol 842LDA local delivery agent 843LDAP Lightweight Directory Access Protocol 844LDR light-dependent resistor 845LDT local descriptor table 846LE logical extent 847LED light emitting diode 848LELL low energy link layer 849LER label edge router 850LF line feed 851LF low frequency 852LFM lowest frequency mode 853LFN long file names 854LFO low-frequency oscillation 855LFS log-structured file system 856LFU least frequently used 857LHP loop heat pipe 858LIF logical interchange format 859LIFO last in, first out 860LILO LInux LOader 861LILO last in, last out 862LINT local interrupt 863LIR local Internet registry 864LISP LISt Processor 865LISP Locator/ID Separation Protocol 866LKM {Linux,loadable} kernel module 867LKML Linux kernel mailing list 868LL load linked 869LL/SC load linked/store conditional 870LLC logical link control 871LLD low-level design 872LLDD low-level design document 873LLDP link layer discovery protocol 874LLF low level format 875LLMNR link-local multicast name resolution 876LLVM Low Level Virtual Machine 877LM long mode 878LMCE local machine check exception 879LMI local management interface 880LMM link management mode 881LMP link management protocol 882LNO loop nest optimization 883LOC lines of code 884LOM lights-out management 885LPE Linux performance events 886LPC low pin count 887LPS local positioning system 888LRC longitudinal redundancy check 889LRM left-to-right mark 890LRO left-to-right override 891LRU least recently used 892LS link state 893LSAN Leak Sanitizer 894LSB Linux standards base 895LSB least significant {bit,byte} 896LSI large scale integration 897LSL load segment limit 898LSM log structured merge 899LSN Large Scale NAT 900LSN log sequence number 901LSO large send offload 902LSR label switch router 903LTCC low temperature co-fired ceramic 904LTO linear tape-open 905LTO link time optimization 906LTR left to right 907LTR load task register 908LTR letter(-sized paper) 909LTS long term support 910LUA Lua Uppercase Accident 911LUN logical unit number 912LV logical volume 913LVM logical volume management 914LVT local vector table 915LVDS Low-Voltage Differential Signaling 916LWP light-weight process 917LZSS Lempel Ziv Storer Szymanski 918LZW Lempel Ziv Welch 919MAB MAC authentication bypass 920MAC mandatory access control 921MAC {media,medium} access control 922MAC message authentication {check,code} 923MADT multiple APIC descriptor table 924MAMR microwave-assisted magnetic recording 925MB megabyte 926MBA multi-boot agent 927MBR master boot record 928MBS megabits per second 929MC memory controller 930MCA machine check architecture 931MCA MicroChannel architecture 932MCC multiversion concurrency control 933MCE machine check exception 934MCGA Multi-Color Graphics Array 935MCH memory controller hub 936MCLAG multi-chassis link aggregation group 937MCM multi-chip module 938MCQ memory controlled queue 939MD machine-dependent 940MD MiniDisc 941MD-SAL model-driven service abstraction layer 942MDA mail delivery agent 943MDA Monochrome Display Adapter 944MDC Management Data Clock 945MDI Medium Dependent Interface 946MDI-X Medium Dependent Interface Crossover 947MDIO Management Data Input/Output 948MDMX MIPS Digital Media eXtension 949MDRAM multibank dynamic random access memory 950MESI modified, exclusive, shared, invalid 951MFC merge from current 952MFC Microsoft Foundation Classes 953MFM modified frequency modulation 954MFU most frequently used 955MGCP media gateway control protocol 956MHU message handling unit 957MI machine-independent 958MI machine interface 959MIB management information base 960MIC message integrity {check,code} 961MID mobile Internet device 962MIDI musical instrument digital interface 963MIF management information format 964MII media independent interface 965MIM man in the middle 966MIMD multiple instruction, multiple data 967MIME Multipurpose Internet Mail Extensions 968MIMO multiple input multiple output 969MIPS million instructions per second 970MIPS Microprocessor without Interlocked Pipeline Stages 971MISD multiple instruction, single data 972MIT Massachusetts Institute of Technology 973MITM man in the middle 974ML machine language 975ML machine learning 976ML mailing list 977ML markup language 978ML maximum likelihood 979MLAG multi-chassis link aggregation group 980MLC multi-level cell 981MLD multicast listener discovery 982MLHP micro loop heat pipe 983MMF multi-mode fiber 984MMIC monolithic microwave integrated circuit 985MMIO memory mapped input/output 986MMORPG massive multiplayer online role playing game 987MMRP multiple MAC registration protocol 988MMU memory management unit 989MMX matrix math extension 990MMX multimedia extension 991MMX multiple math extension 992MO magneto-optical 993MOESI modified, owned, exclusive, shared, invalid 994MOF maximum operating frequency 995MOSFET metal-oxide-semiconductor field-effect transistor 996MOSI modified, owned, shared, invalid 997MP multi-platform 998MP multiplayer 999MP {multiprocessing,multiprocessor} 1000MPEG moving picture experts group 1001MPI message passing interface 1002MPLS Multiprotocol Label Switching 1003MPP massively parallel processor 1004MPS memory pool system 1005MPS multiprocessor specification 1006MQTT Message Queuing Telemetry Transport 1007MR modem ready 1008MRO method resolution order 1009MRP multiple registration protocol 1010MRU most recently used 1011MS Microsoft 1012MSAN Memory Sanitizer 1013MSB most significant {bit,byte} 1014MSC message sequence chart 1015MSE mean square error 1016MSF minutes seconds frames 1017MSI message signaled interrupt 1018MSI modified, shared, invalid 1019MSR {machine state,model-specific} register 1020MSS maximum segment size 1021MSTP Multiple Spanning Tree Protocol 1022MT machine translation 1023MTA mail transfer agent 1024MTBF mean time between failures 1025MTP media transfer protocol 1026MTRR memory type range register 1027MTTF mean time to failure 1028MTU maximum transmission unit 1029MUA mail user agent 1030MUD multi-user domain 1031MVCC multiversion concurrency control 1032MVR multicast VLAN registration 1033MVRP multiple VLAN registration protocol 1034MWE module width encoding 1035MX mail exchange 1036NACK negative acknowledgement 1037NAK negative acknowledgement 1038NAN neighbor awareness networking 1039NAN not a number 1040NAPT Network Address Port Translation 1041NAS network attached storage 1042NAT network address translation 1043NAV network allocation vector 1044NC numerical control 1045NC-SI network controller sideband interface 1046NCO numerically-controlled oscillator 1047NCP Network Control Protocol 1048NCSI network connectivity status indicator 1049NCQ native command queuing 1050ND neighbor discovery 1051NDFA nondeterministic finite automaton 1052NDIS network driver interface specification 1053NE numeric error 1054NEWS Network extensible Window System 1055NFA nondeterministic finite automaton 1056NFC near-field communication 1057NFCI no functional change intended 1058NFS network file system 1059NFV network function virtualization 1060NIA next instruction address 1061NIC network information center 1062NIC network interface card 1063NIDS network intrusion detection system 1064NIP network interface protocol 1065NIPS network intrusion prevention system 1066NIS network information service 1067NIST National Institute of Standards and Technology 1068NLS native language support 1069NMI non-maskable interrupt 1070NNTP Network News Transfer Protocol 1071NOC network operations center 1072NOP no operation 1073NOS network operating system 1074NP nondeterministic polynomial time 1075NRND not recommended for new designs 1076NRZ non-return to zero 1077NSA nation-state adversary 1078NSA no such agency 1079NSA National Security Agency 1080NTM non-deterministic Turing machine 1081NTP Network Time Protocol 1082NUMA non-uniform memory access 1083NURBS non-uniform rational basis spline 1084NVMM NetBSD Virtual Machine Monitor 1085NVMM non-volatile main memory 1086NVRAM non-volatile random access memory 1087NW not write-through 1088NX no execute 1089OAEP optimal asymmetric encryption padding 1090OAM operations, administration, and {management,maintenance} 1091OBO off by one 1092OBOE off by one error 1093OCL object constraint language 1094OCR optical character recognition 1095ODE offline device environment 1096ODI open data-link interface 1097ODM object data manager 1098ODCM on-demand clock modulation 1099ODT on-die termination 1100OEM original equipment manufacturer 1101OFB output feedback 1102OFDM orthogonal frequency division multiplexing 1103OFET organic field-effect transistor 1104OLAP online analytical processing 1105OLE object linking and embedding 1106OLTP online transaction processing 1107ONFI open nand flash interface 1108OO OpenOffice 1109OO object oriented 1110OOB out of band 1111OOE out of order execution 1112OOM out of memory 1113OOO OpenOffice.org 1114OOP object oriented programming 1115OOPS object oriented programming systems 1116OOSE object oriented software engineering 1117OPM operations per minute 1118OPS operations per second 1119OQL Object Query Language 1120ORB object request broker 1121ORM object-relational mapping 1122OS operating system 1123OSD object-based storage device 1124OSD open source definition 1125OSF open software foundation 1126OSI Open Source Initiative 1127OSI open systems interconnection 1128OSPF open shortest path first 1129OSPM OS power management 1130OSS open sound system 1131OSS open source software 1132OSVW operating system visible workarounds 1133OTP one time password 1134OTP open telecom platform 1135OU organizational unit 1136OUI organizationally unique identifier 1137OWASP Open Web Application Security Project 1138OWL Web Ontology Language 1139P2P PCI to PCI 1140P2P peer to peer 1141PA phase accumulator 1142PA physical address 1143PAAS platform as a service 1144PAC phase-amplitude converter 1145PAE physical address extension 1146PAGP port aggregation protocol 1147PAL phase alternating line 1148PAL programmable array logic 1149PAM pluggable authentication modules 1150PAM pulse amplitude modulation 1151PAP password authentication protocol 1152PAT page attribute table 1153PAT port address translation 1154PATA parallel ATA 1155PAX portable archive exchange 1156PBE pending break encoding 1157PBE programming by example 1158PBR partition boot record 1159PBX private branch exchange 1160PC personal computer 1161PC program counter 1162PCB printed circuit board 1163PCB process control block 1164PCB Protocol Control Block 1165PCBC propagating cipher block chaining 1166PCC Portable C Compiler 1167PCD page-level cache disable 1168PCE path computation element 1169PCE performance-monitor counter enable 1170PCEP Path Computation Element Protocol 1171PCH platform controller hub 1172PCI peripheral component interconnect 1173PCM phase change memory 1174PCM pulse code modulation 1175PCMCIA Personal Computer Memory Card International Association 1176PCP Port Control Protocol 1177PD public domain 1178PDA personal digital assistant 1179PDA pushdown automaton 1180PDAG propositional directed acyclic graph 1181PDB power distribution board 1182PDF portable document format 1183PDM pulse-duration modulation 1184PDN pull-down network 1185PDP page {descriptor,directory} page 1186PDS product data sheet 1187PDU protocol data unit 1188PE protection enable 1189PE provider edge 1190PEAP Protected EAP 1191PECI platform environment control interface 1192PEP protocol extension protocol 1193PER packed encoding rules 1194PFS perfect forward secrecy 1195PGAS partitioned global address space 1196PGE page global enable 1197PGP Pretty Good Privacy 1198PHB PCI host bridge 1199PHP PHP: Hypertext Preprocessor 1200PIC performance instrumentation counters 1201PIC position independent code 1202PIC programmable interrupt controller 1203PICNIC problem in chair, not in computer 1204PID process id 1205PIE position independent executable 1206PIL Priority Interrupt Level 1207PIM personal information manager 1208PIM platform-independent model 1209PIO programmed input/output 1210PIPT physically indexed, physically tagged 1211PIQ prefetch input queue 1212PIT programmable interrupt timer 1213PIV personal identity verification 1214PIX Private Internet eXchange 1215PKCS public-key cryptography standards 1216PKI public key infrastructure 1217PLC programmable logic controller 1218PLD programmable logic device 1219PLL phase locked loop 1220PLRU pseudo LRU 1221PLTM package level thermal management 1222PM power management 1223PM {phase,pulse} modulation 1224PMC performance monitoring counters 1225PME power management event 1226PMEG page map entry group 1227PMI performance monitoring infrastructure 1228PMI platform management interrupt 1229PMIC power management integrated circut 1230PMIO port-mapped input/output 1231PMT photo-multiplier tube 1232PMU performance monitoring units 1233PMU power management unit 1234PNG portable network graphics 1235PNP plug and play 1236POE power over ethernet 1237POF probability of failure 1238POP Post Office Protocol 1239POP power on password 1240POR plan of record 1241POSIX Portable Operating System Interface [for Unix] 1242POST power on self test 1243POTS plain old telephone system 1244POWER Performance Optimization With Enhanced RISC 1245POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1246PP pair programming 1247PPB PCI [to] PCI bridge 1248PPC PowerPC 1249PPC Power Performance Computing 1250PPI pixels per inch 1251PPM pages per minute 1252PPP Point-to-Point Protocol 1253PPPOA Point-to-Point Protocol over ATM 1254PPPOE Point-to-Point Protocol over Ethernet 1255PPR processor programming reference 1256PPT powerpoint 1257PPT punched paper tape 1258PPU physics processing unit 1259PRAM Parameter RAM 1260PRBS pseudorandom bit sequence 1261PRG pseudorandom generator 1262PRF pseudorandom function [family] 1263PRML partial response, maximum likelihood 1264PRN pseudorandom {noise,number} 1265PRNG pseudorandom number generator 1266PROM programmable read only memory 1267PRP pseudorandom permutation 1268PRU Programmable Realtime Unit 1269PS PostScript 1270PSD power spectral density 1271PSE page size extensions 1272PSK phase shift keying 1273PSK pre-shared key 1274PSTN public switched telephone network 1275PSW program status word 1276PTE page table entry 1277PTLA pseudo top level aggregator 1278PTP page table page 1279PTV perceived target value 1280PU processing unit 1281PUC personal unblocking code 1282PUN physical unit number 1283PV physical volume 1284PVC permanent virtual circuit 1285PVG physical volume group 1286PVI protected-mode virtual interrupt 1287PVRST Per-VLAN rapid spanning tree 1288PVST Per-VLAN Spanning Tree 1289PWM pulse width modulation 1290PXE preboot execution environment 1291QA quality assurance 1292QAM quadrature amplitude modulation 1293QAM quality assurance management 1294QBE query by example 1295QC quality control 1296QDI quasi delay insensitive 1297QCIF quarter common intermediate format 1298QOI quality of implementation 1299QOI quick order interface 1300QOS quality of service 1301QVL qualified vendor list 1302R/O read only 1303R/W read/write 1304RA receiver address 1305RA remote assistance 1306RA resource affinity 1307RA router advertisement 1308RAD rapid application development 1309RADIUS remote authentication dial-in user service 1310RAID redundant array of {independent,inexpensive} disks 1311RAM random access memory 1312RAS reliability, availability and serviceability 1313RAS remote access service 1314RAS restartable atomic sequence 1315RAS row address strobe 1316RBF radial basis function 1317RBNF routing backus-naur form 1318RBT red-black tree 1319RC release candidate 1320RC remote control 1321RC run commands 1322RCS Revision Control System 1323RCS revision control system 1324RCU read, copy, update 1325RDB Rigid Disk Block 1326RDBMS relational database management system 1327RDF Resource Description Framework 1328RDM relational data model 1329RDMA remote direct memory access 1330RDP remote desktop protocol 1331RDRAM Rambus DRAM 1332RE regular expression 1333REPL read, evaluate, print, loop 1334REST representational state transfer 1335RF radio frequency 1336RFB remote frame buffer 1337RFI radio frequency interference 1338RFO request for ownership 1339RFU reserved for future use 1340RGB red green blue 1341RGBA red green blue alpha 1342RGMII reduced gigabit media independent interface 1343RH read hit 1344RHEL Red Hat Enterprise Linux 1345RHL Red Hat Linux 1346RIB routing information base 1347RIFF Resource Interchange File Format 1348RIP Raster Image Processor 1349RIP Routing Information Protocol 1350RIR regional Internet registry 1351RISC reduced instruction set {computer,computing} 1352RKM ROM Kernel Manual 1353RLE run length encoding 1354RLL run length limited 1355RLO right-to-left override 1356RM read miss 1357RMCP Remote Management Control Protocol 1358RMI remote method invocation 1359RMO Relaxed Memory Ordering 1360RMPM rapid memory power management 1361RMS root mean square 1362RMW read, modify, write 1363RNG random number generator 1364ROM read only memory 1365RPC remote procedure call 1366RPKI resource PKI 1367RPL requested privilege level 1368RPM revolutions per minute 1369RPN reverse Polish notation 1370RPVST Rapid Per-VLAN Spanning Tree 1371RR random replacement 1372RR round robin 1373RS relay station 1374RSA Rivest, Shamir, [and] Adleman 1375RSIP Realm Specific IP 1376RSN Robust Secure Network 1377RSS really simple syndication 1378RSS residual sum of squares 1379RSTP Rapid Spanning Tree Protocol 1380RT real time 1381RTC real time clock 1382RTC real time computing 1383RTF rich text format 1384RTL register transfer language 1385RTL resistor-transistor logic 1386RTL right to left 1387RTOS real time operating system 1388RTP Real-time Transport Protocol 1389RTS request to send 1390RTT round trip time 1391RUP rational unified process 1392RW Rabin-Williams 1393RWM read-write memory 1394RX {receive,receiver} 1395S/PDIF Sony/Philips Digital Interface Format 1396SA security advisory 1397SA security association 1398SA source address 1399SA structured analysis 1400SAAS software as a service 1401SABRE Semi-automated business research environment 1402SACD super audio compact disc 1403SAD security association database 1404SAF-TE SCSI accessed fault-tolerant enclosure 1405SAGE Semi-automated ground environment 1406SAL {service,system} abstraction layer 1407SAM serial access memory 1408SAM sum addressed memory 1409SAML security assertion markup language 1410SAN storage area network 1411SAP service access point 1412SAPIC streamlined advanced programmable interrupt controller 1413SASD structured analysis, structured design 1414SASI Shugart Associates System Interface 1415SASL simple authentication [and] security layer 1416SATA serial advanced technology attachment 1417SAX simple API for XML 1418SB sound blaster 1419SBSA server base system architecture 1420SBU standard build unit 1421SC store conditional 1422SCA source code analyzer 1423SCADA supervisory control and data acquisition 1424SCC single chip cloud 1425SCC source code control 1426SCCP skinny call control protocol 1427SCCS Source Code Control System 1428SCI scalable coherent interface 1429SCI system control interrupt 1430SCIM smart common input method 1431SCM software configuration management 1432SCM source code management 1433SCM storage-class memory 1434SCO synchronous connection orientated 1435SCP secure copy 1436SCP system control processor 1437SCPI system control and power interface 1438SCSI Small Computer System Interface 1439SCTP Stream Control Transmission Protocol 1440SDDC software defined data center 1441SDEI software delegated exception interface 1442SDI symbol deinterleave 1443SDK software development kit 1444SDL Simple Declarative Language 1445SDL Simple Direct-media Layer 1446SDLC {software,system,systems} development life cycle 1447SDN software defined networking 1448SDP Session Description Protocol 1449SDR software defined radio 1450SDRAM synchronous dynamic random access memory 1451SDS software defined storage 1452SDT syntax-directed translation 1453SEA synchronous external abort 1454SEGV segmentation violation 1455SED self-encrypting drive 1456SED stream editor 1457SEMB serial ATA enclosure management bridge 1458SEO search engine optimization 1459SES SCSI enclosure services 1460SFC sequential function chart 1461SFI simple firmware interface 1462SFI software fault isolation 1463SFTP SSH File Transfer Protocol 1464SFTP Serial File Transfer Protocol 1465SFTP Simple File Transfer Protocol 1466SGI Silicon Graphics, Inc 1467SGI software generated interrupt 1468SGMII serial gigabit media independent interface 1469SGPIO serial general purpose input/output 1470SGRAM synchronous graphics random access memory 1471SHA secure hash algorithm 1472SICP structure and interpretation of computer programs 1473SIDH supersingular isogeny Diffie-Hellman 1474SIEM security information and event management 1475SIF source input format 1476SIFS short inter-frame space 1477SIM subscriber identity module 1478SIMD single instruction, multiple data 1479SIMM single inline memory module 1480SIP Session Initiation Protocol 1481SIR signal-to-interference ratio 1482SIR slow infrared 1483SISD single instruction, single data 1484SLAAC stateless address auto-configuration 1485SLC single-level cell 1486SLDRAM synchronous-link dynamic random access memory 1487SLED single large expensive disk 1488SLI scalable link interface 1489SLI scan-line interleave 1490SLIC system license internal code 1491SLOC source lines of code 1492SLRU segmented LRU 1493SMA smart memory access 1494SMAF system management action field 1495SMAP Simple Mail Access Protocol 1496SMAP supervisor mode access prevention 1497SMART self-monitoring analysis and reporting technology 1498SMB Server Message Block 1499SMB system management bus 1500SMBIOS System Management BIOS 1501SMC system management controller 1502SMD storage module device 1503SMEP supervisor mode execution protection 1504SMF single mode fiber 1505SMI structure of management information 1506SMI system management interrupt 1507SMM system management mode 1508SMP serial management protocol 1509SMP symmetric multiprocessing 1510SMR shingled magnetic recording 1511SMR state machine replication 1512SMT simultaneous multithreading 1513SMTP Simple Mail Transfer Protocol 1514SMU system management unit 1515SNA systems network architecture 1516SNAP Sub-Network Access Protocol 1517SNIA Storage Networking Industry Association 1518SNMP Simple Network Management Protocol 1519SNR signal-to-noise ratio 1520SOA service oriented architecture 1521SOAP Simple Object Access Protocol 1522SOC system on chip 1523SOF start of frame 1524SOH start of header 1525SOHO small office/home office 1526SOL serial over LAN 1527SOM system on module 1528SP service pack 1529SP stack pointer 1530SPA storage pool allocator 1531SPAN switched port analyzer 1532SPARC scalable processor architecture 1533SPARQL SPARQL Protocol and RDF Query Language 1534SPD security policy database 1535SPD serial presence detect 1536SPDIF Sony/Philips digital interface format 1537SPI serial peripheral interface 1538SPI stateful packet inspection 1539SPL system interrupt priority level 1540SPL spinlock 1541SPMD single process, multiple data 1542SPR special purpose register 1543SPT sectors per track 1544SQA software quality assurance 1545SQCIF sub quarter common intermediate format 1546SQL Structured Query Language 1547SRAM static random access memory 1548SRC sample rate conversion 1549SRP SCSI RDMA protocol 1550SRR shaped round robin 1551SRTP Secure Real-time Transport Protocol 1552SS self-snoop 1553SS stack segment 1554SSA static single assignment 1555SSAP source service access point 1556SSB single-sideband modulation 1557SSC spread spectrum clock 1558SSD solid state drive 1559SSE streaming SIMD extensions 1560SSFDC solid state floppy disc card 1561SSH secure shell 1562SSI server side includes 1563SSID service set identifier 1564SSTP secure socket tunneling protocol 1565SSL secure sockets layer 1566SSP stack smashing protection 1567STC software thermal control 1568STD state transition diagram 1569STM software transactional memory 1570STOMP Streaming Text Oriented Messaging Protocol 1571STP Spanning Tree Protocol 1572STP shielded twisted pair 1573STRG spanning tree root guard 1574SUN Stanford University Network 1575SUS Single Unix Specification 1576SUT system under test 1577SVC switched virtual circuit 1578SVG scalable vector graphics 1579SVGA Super Video Graphics Array 1580SVI {switch,switched} virtual interface 1581SVM secure virtual machine 1582SVM support vector machine 1583SVR System V Release 1584SVS Separate Virtual Space 1585SWF Shockwave Flash 1586SWIG simplified wrapper [and] interface generator 1587SYR symbol timing recovery 1588TA test assertion 1589TA transmitter address 1590TACACS terminal access controller access-control system 1591TAI international atomic time 1592TAO track at once 1593TAOCP The Art of Computer Programming 1594TAP Test Anything Protocol 1595TAS test and set 1596TB terabyte 1597TBNF transitional backus-naur form 1598TCB trace capture buffer 1599TCB trusted computing base 1600TCC thermal control circuit 1601TCL tool command language 1602TCP Transmission Control Protocol 1603TCQ tagged command queueing 1604TDC time [to] digital converter 1605TDD test-driven development 1606TDD time division duplex 1607TDM time division multiplexing 1608TDMA time division multiple access 1609TDOA time difference of arrival 1610TDP thermal design {point,power} 1611TDR time-domain reflectometry 1612TECO Text Editor and Corrector 1613TFT thin film transistor 1614TFTP Trivial File Transfer Protocol 1615TIAS try it and see 1616TIFF tagged image file format 1617TITS try it to see 1618TK temporal key 1619TKIP Temporal Key Integrity Protocol 1620TLA top level aggregator 1621TLB translation lookaside buffer 1622TLD top level domain 1623TLER time-limited error recovery 1624TLI transport layer interface 1625TLS thread local storage 1626TLS transport layer security 1627TM Turing machine 1628TM thermal monitor 1629TMG transmogrifier 1630TMDS transition minimized differential signaling 1631TMO timeout 1632TOD time of day 1633TOFU trust on first use 1634TOS terms of service 1635TOS trusted operating system 1636TOS type of service 1637TP transaction processing 1638TPI tracks per inch 1639TPM transactions per minute 1640TPM trusted platform module 1641TPR task priority register 1642TPS transactions per second 1643TPS transmission parameters signaling 1644TR task register 1645TR token ring 1646TRL timing recovery loop 1647TRNG true random number generator 1648TS terminal services 1649TS time series 1650TS time stamp 1651TS transport stream 1652TSAN Thread Sanitizer 1653TSC time stamp counter 1654TSD time stamp disable 1655TSDB time series database 1656TSL test, set, lock 1657TSO time sharing option 1658TSO Total Store Ordering 1659TSP Time-Stamp Protocol 1660TSP Tunnel Setup Protocol 1661TSP time synchronization protocol 1662TSP traveling salesman problem 1663TSS task state segment 1664TSV tab-separated values 1665TTL time to live 1666TTL transistor-transistor logic 1667TTM translation table maps 1668TTY teletype 1669TUI {terminal,text-based,textual} user interface 1670TX {transmit out,transmitter} 1671TXG transaction group 1672TZ time zone 1673UAC user {access,account} control 1674UAF use-after-free 1675UART universal asynchronous receiver/transmitter 1676UAT user acceptance testing 1677UB undefined behavior 1678UBSAN Undefined Behavior Sanitizer 1679UC uncacheable 1680UCS uniform-cost search 1681UCS unified computing system 1682UCS universal coded character set 1683UDI uniform driver interface 1684UDMA ultra DMA 1685UDO ultra density optical 1686UDP User Datagram Protocol 1687UEFI unified extensible firmware interface 1688UFS Unix File System 1689UGA universal graphics adapter 1690UI unit interval 1691UI user interface 1692UICC universal integrated circuit card 1693UID unique identifier 1694UID user identifier 1695UL upload 1696UMA uniform memory access 1697UMA upper memory area 1698UMB upper memory block 1699UML unified modeling language 1700UMPC ultra-mobile PC 1701UPNP universal plug and play 1702UPS uninterruptible power supply 1703URI uniform resource identifier 1704URL uniform resource locator 1705URN uniform resource name 1706USART universal synchronous/asynchronous receiver/transmitter 1707USB universal serial bus 1708USWC uncacheable speculative write combining 1709UT unit test 1710UTC coordinated universal time 1711UTF unicode transformation formats 1712UTP unshielded twisted pair 1713UTS UNIX time-sharing 1714UUCP Unix-to-Unix Copy Protocol 1715UUID universally unique identifier 1716UUOC useless use of cat 1717UUT unit under test 1718UX user experience 1719VA vertical alignment 1720VA virtual address 1721VA volt-ampere 1722VAX virtual address extension 1723VB Visual Basic 1724VBR volume boot record 1725VCA variable-gain amplifier 1726VCC common collector voltage 1727VCCP virtual chassis control protocol 1728VCF voltage-controlled filter 1729VCM virtual channel memory 1730VCO voltage-controlled oscillator 1731VCP virtual chassis port 1732VCS version control system 1733VDPAU Video Decode and Presentation API for Unix 1734VES virtual execution system 1735VESA Video Electronics Standards Association 1736VFO variable-frequency oscillator 1737VFS virtual file system 1738VG volume group 1739VGA Video Graphics Array 1740VHDCI very high density cable interconnect 1741VID {VLAN,voltage level} identifier 1742VIM Vi IMproved 1743VIPT virtually indexed, physically tagged 1744VIVT virtually indexed, virtually tagged 1745VLAN virtual local area network 1746VLD variable-length decoding 1747VLIW very long instruction word 1748VLSI very large scale integration 1749VLSM variable length subnet mask 1750VM virtual {machine,memory} 1751VME virtual mode extension 1752VMX vector multimedia extensions 1753VMX virtual machine extensions 1754VNC virtual network computing 1755VOD video on demand 1756VPD vital product data 1757VPN virtual private network 1758VPWS virtual private wire service 1759VR virtual reality 1760VRAM video random access memory 1761VRF virtual routing and forwarding 1762VRM voltage regulator module 1763VROC Virtual RAID On CPU 1764VRRP Virtual Router Redundancy Protocol 1765VSTP VLAN Spanning Tree Protocol 1766VTP VLAN Trunking Protocol 1767VXFS Veritas file system 1768VXVM Veritas volume manager 1769W watt 1770W3C World Wide Web Consortium 1771WAFL write anywhere file layout 1772WAMP Web Application Messaging Protocol 1773WAN wide area network 1774WAP Wireless Application Protocol 1775WAP wireless access point 1776WDM Windows Driver Model 1777WDDM Windows Display Driver Model 1778WDT watchdog timer 1779WEP Wired Equivalent Privacy 1780WFI wait for interrupt 1781WFQ weighted fair queuing 1782WH write hit 1783WHEA Windows hardware error architecture 1784WIFI wireless fidelity 1785WLAN wireless local area network 1786WM write miss 1787WMF Windows meta file 1788WMI Windows Management Instrumentation 1789WOL Wake-on-LAN 1790WOM Wake-on-Modem 1791WOR Wake-on-Ring 1792WORM write once read many 1793WP WordPerfect 1794WP word processor 1795WP write protect 1796WPA Wi-Fi Protected Access 1797WPA2 Wi-Fi Protected Access II 1798WPAD web proxy auto-discovery protocol 1799WPS Wi-Fi Protected Setup 1800WRAM window random access memory 1801WS web services 1802WTC write through caching 1803WTD weighted tail drop 1804WWAN wireless wide area network 1805WWW world wide web 1806WYSIAYG what you see is all you get 1807WYSIWYG what you see is what you get 1808XBAR crossbar 1809XDMCP X Display Manager control protocol 1810XER XML encoding rules 1811XGA Extended Graphics Array 1812XHR XMLHttpRequest 1813XIP execute in place 1814XML Extensible Markup Language 1815XNA XNA's not acronymed 1816XNS Xerox network systems 1817XOR exclusive or 1818XP extreme programming 1819XSI X/Open System Interface 1820XSL extensible stylesheet language 1821XSLT extensible stylesheet language transformations 1822XSS cross site scripting 1823XT extended technology 1824XTACACS extended terminal access controller access-control system 1825XTI X/Open transport interface 1826XUL XML user interface language 1827YACC yet another compiler compiler 1828YAML YAML ain't markup language 1829YANG yet another next generation 1830YAWPFAPR you are welcome; please file a problem report 1831YP Yellow Pages 1832YTD year to date 1833ZAP ZFS attribute processor 1834ZBR zone bit recording 1835ZFOD zero-filled on demand 1836ZFS zettabyte file system 1837ZIF zero insertion force 1838ZIFS zero insertion force socket 1839ZIL ZFS intent log 1840ZMA zone multicast address 1841ZOI zero one infinity 1842ZOI zone of influence 1843ZPL ZFS Posix layer 1844ZVOL ZFS Volume 1845