acronyms.comp revision 1.321
1$NetBSD: acronyms.comp,v 1.321 2021/02/12 08:56:04 leot 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 654GRO generic receive offload 655GSI global system interrupt 656GSO generic send offload 657GUI graphical user interface 658GUID globally unique identifier 659GVFS git virtual file system 660HA high availability 661HAL hardware abstraction layer 662HAT hashed array tree 663HATEOAS hypermedia as the engine of application state 664HBA host bus adapter 665HCF halt and catch fire 666HCI host controller interface 667HCI human-computer interaction 668HCL hardware compatibility list 669HDCP High-bandwidth Digital Content Protection 670HDD hard disk drive 671HDL hardware description language 672HDMI High-Definition Multimedia Interface 673HDTV high-definition television 674HECI host embedded controller interface 675HEST hardware error source table 676HEVC high efficiency video coding 677HF high frequency 678HFM highest frequency mode 679HFS hierarchical file system 680HID human interface device 681HKP HTTP Keyserver Protocol 682HLL high-level language 683HMA high memory area 684HMI human-machine interface 685HOOD hierarchical object oriented design 686HOTP HMAC-based one time password 687HP Hewlett-Packard 688HPC high performance computing 689HPD hot plug detection 690HPET high precision event timer 691HSM hardware security module 692HSM hierarchical storage management 693HSRP hot standby router protocol 694HT hyper-threading 695HTC hardware thermal control 696HTCC high temperature co-fired ceramic 697HTML HyperText Markup Language 698HTT hyper-threading technology 699HTTP Hypertext Transfer Protocol 700HTTPS Hypertext Transfer Protocol Secure 701HVM hardware virtual machine 702HVDS High-Voltage Differential Signaling 703HWASAN Hardware-assisted Address Sanitizer 704HZ Hertz 705I2O intelligent input/output 706IA information assurance 707IAAS infrastructure as a service 708IANA Internet Assigned Numbers Authority 709IBC iterated block cipher 710IBM International Business Machines 711IBPI international blinking pattern interpretation 712IBS instruction based sampling 713IBSS independent basic service set 714IC integrated circuit 715ICA independent computer architecture 716ICACLS integrity control access control lists 717ICB Internet Citizen's Band 718ICE in-circuit emulator 719ICE internal compiler error 720ICH I/O controller hub 721ICMP Internet Control Message Protocol 722ICT information and communications technology 723ICW initialization command word 724IDA Intel dynamic acceleration 725IDCMP Intuition direct communication message port 726IDCT inverse discrete cosine transform 727IDE integrated development environment 728IDE integrated drive electronics 729IDPS intrusion detection [and] prevention system 730IDRP inter-domain routing protocol 731IDS intrusion detection system 732IDT interrupt descriptor table 733IE Internet Explorer 734IEC International Electrotechnical Commission 735IEEE Institute of Electrical and Electronics Engineers 736IESG Internet Engineering Steering Group 737IETF Internet Engineering Task Force 738IF intermediate frequency 739IFCM isochronous flow control mode 740IFF Interchange File Format 741IFS internal field separator 742IGD Internet gateway device 743IGMP Internet Group Management Protocol 744IGP interior gateway protocol 745IHV independent hardware vendor 746IKE Internet key exchange 747ILM internal loopback mode 748ILOM integrated lights-out management 749ILP instruction level parallelism 750IM instant messaging 751IME input method editor 752IMAP Internet Message Access Protocol 753IMC integrated memory controller 754IMCR interrupt mode configuration register 755IMR interrupt mask register 756IMS information management system 757IMSI international mobile subscriber identity 758INCITS InterNational Committee for Information Technology Standards 759INODE index node 760IO input/output 761IOCTL input/output control 762IOM input/output managers 763IOMMU input/output memory management unit 764IOT Internet of Things 765IP Internet Protocol 766IP intellectual property 767IPC instructions per cycle 768IPC interprocess communication 769IPCF interprocess communication facility 770IPE integrated programming environment 771IPI intelligent peripheral interface 772IPI interprocessor interrupt 773IPL Initial Program Load 774IPL Interrupt Priority Level 775IPMB Intelligent Platform Management Bus 776IPMI Intelligent Platform Management Interface 777IPNG Internet Protocol, Next Generation 778IPS in-plane switching 779IPS intrusion prevention system 780IPSEC Internet Protocol Security 781IRC Internet Relay Chat 782IRDA infrared data association 783IRDP ICMP Router Discovery Protocol 784IRQ interrupt request 785IRQL interrupt request level 786IRR interrupt request register 787IRTF Internet Research Task Force 788IS information system 789ISA industry standard architecture 790ISA instruction set architecture 791ISE instant secure erase 792ISDN integrated services digital network 793ISI inter-symbol interference 794ISL initial system load 795ISM industrial, scientific, [and] medical 796ISMS information system management system 797ISN initial serial number 798ISO International Standards Organization 799ISOC Internet Society 800ISP Internet service provider 801ISR in-service register 802ISR interrupt service routine 803IST internal spanning tree 804IST interrupt stack table 805ISV independent software vendor 806IT information technology 807ITB Intel Turbo Boost 808ITIL information technology infrastructure library 809ITP in-target probe 810ITSM IT service management 811IV initialization vector 812IVT interrupt vector table 813JBOD just a bunch of disks 814JCL Job Control Language 815JFET junction [gate] field-effect transistor 816JIT just in time 817JPEG Joint Photographic Experts Group 818JRE Java Runtime Environment 819JSON JavaScript Object Notation 820JTAG joint test action group 821KASLR kernel address space layout randomization 822KB keyboard 823KB kilobyte 824KBD keyboard 825KBD kilobaud 826KCS keyboard controller style 827KLOC thousand lines of code 828KMS kernel-mode setting 829KPI kernel programming interface 830KVA kernel virtual address 831KVM kernel virtual machine 832KVM kernel virtual memory 833KVM keyboard, video, [and] mouse 834L2CAP link layer control and adaptation protocol 835LAG link aggregation group 836LAMP Linux Apache MySQL {Perl,PHP,Python} 837LAN local area network 838LAPIC local advanced programmable interrupt controller 839LAR load access rights 840LBA logical block addressing 841LBNF labeled backus-naur form 842LBS location-based service 843LCD liquid crystal display 844LCP link control protocol 845LDA local delivery agent 846LDAP Lightweight Directory Access Protocol 847LDR light-dependent resistor 848LDT local descriptor table 849LE logical extent 850LED light emitting diode 851LELL low energy link layer 852LER label edge router 853LF line feed 854LF low frequency 855LFM lowest frequency mode 856LFN long file names 857LFO low-frequency oscillation 858LFS log-structured file system 859LFU least frequently used 860LHP loop heat pipe 861LIF logical interchange format 862LIFO last in, first out 863LILO LInux LOader 864LILO last in, last out 865LINT local interrupt 866LIR local Internet registry 867LISP LISt Processor 868LISP Locator/ID Separation Protocol 869LKM {Linux,loadable} kernel module 870LKML Linux kernel mailing list 871LL load linked 872LL/SC load linked/store conditional 873LLC logical link control 874LLD low-level design 875LLDD low-level design document 876LLDP link layer discovery protocol 877LLF low level format 878LLMNR link-local multicast name resolution 879LLVM Low Level Virtual Machine 880LM long mode 881LMCE local machine check exception 882LMI local management interface 883LMM link management mode 884LMP link management protocol 885LNO loop nest optimization 886LOC lines of code 887LOM lights-out management 888LPE Linux performance events 889LPC low pin count 890LPS local positioning system 891LRC longitudinal redundancy check 892LRM left-to-right mark 893LRO left-to-right override 894LRU least recently used 895LS link state 896LSAN Leak Sanitizer 897LSB Linux standards base 898LSB least significant {bit,byte} 899LSI large scale integration 900LSL load segment limit 901LSM log structured merge 902LSN Large Scale NAT 903LSN log sequence number 904LSO large send offload 905LSR label switch router 906LTCC low temperature co-fired ceramic 907LTO linear tape-open 908LTO link time optimization 909LTR left to right 910LTR load task register 911LTR letter(-sized paper) 912LTS long term support 913LUA Lua Uppercase Accident 914LUN logical unit number 915LV logical volume 916LVM logical volume management 917LVT local vector table 918LVDS Low-Voltage Differential Signaling 919LWP light-weight process 920LZSS Lempel Ziv Storer Szymanski 921LZW Lempel Ziv Welch 922MAB MAC authentication bypass 923MAC mandatory access control 924MAC {media,medium} access control 925MAC message authentication {check,code} 926MADT multiple APIC descriptor table 927MAMR microwave-assisted magnetic recording 928MB megabyte 929MBA multi-boot agent 930MBR master boot record 931MBS megabits per second 932MC memory controller 933MCA machine check architecture 934MCA MicroChannel architecture 935MCC multiversion concurrency control 936MCE machine check exception 937MCGA Multi-Color Graphics Array 938MCH memory controller hub 939MCLAG multi-chassis link aggregation group 940MCM multi-chip module 941MCQ memory controlled queue 942MD machine-dependent 943MD MiniDisc 944MD-SAL model-driven service abstraction layer 945MDA mail delivery agent 946MDA Monochrome Display Adapter 947MDC Management Data Clock 948MDI Medium Dependent Interface 949MDI-X Medium Dependent Interface Crossover 950MDIO Management Data Input/Output 951MDMX MIPS Digital Media eXtension 952MDRAM multibank dynamic random access memory 953MESI modified, exclusive, shared, invalid 954MFC merge from current 955MFC Microsoft Foundation Classes 956MFM modified frequency modulation 957MFU most frequently used 958MGCP media gateway control protocol 959MHU message handling unit 960MI machine-independent 961MI machine interface 962MIB management information base 963MIC message integrity {check,code} 964MID mobile Internet device 965MIDI musical instrument digital interface 966MIF management information format 967MII media independent interface 968MIM man in the middle 969MIMD multiple instruction, multiple data 970MIME Multipurpose Internet Mail Extensions 971MIMO multiple input multiple output 972MIPS million instructions per second 973MIPS Microprocessor without Interlocked Pipeline Stages 974MISD multiple instruction, single data 975MIT Massachusetts Institute of Technology 976MITM man in the middle 977ML machine language 978ML machine learning 979ML mailing list 980ML markup language 981ML maximum likelihood 982MLAG multi-chassis link aggregation group 983MLC multi-level cell 984MLD multicast listener discovery 985MLHP micro loop heat pipe 986MMF multi-mode fiber 987MMIC monolithic microwave integrated circuit 988MMIO memory mapped input/output 989MMORPG massive multiplayer online role playing game 990MMRP multiple MAC registration protocol 991MMU memory management unit 992MMX matrix math extension 993MMX multimedia extension 994MMX multiple math extension 995MO magneto-optical 996MOESI modified, owned, exclusive, shared, invalid 997MOF maximum operating frequency 998MOSFET metal-oxide-semiconductor field-effect transistor 999MOSI modified, owned, shared, invalid 1000MP multi-platform 1001MP multiplayer 1002MP {multiprocessing,multiprocessor} 1003MPEG moving picture experts group 1004MPI message passing interface 1005MPLS Multiprotocol Label Switching 1006MPP massively parallel processor 1007MPS memory pool system 1008MPS multiprocessor specification 1009MQTT Message Queuing Telemetry Transport 1010MR modem ready 1011MRO method resolution order 1012MRP multiple registration protocol 1013MRU most recently used 1014MS Microsoft 1015MSAN Memory Sanitizer 1016MSB most significant {bit,byte} 1017MSC message sequence chart 1018MSE mean square error 1019MSF minutes seconds frames 1020MSI message signaled interrupt 1021MSI modified, shared, invalid 1022MSR {machine state,model-specific} register 1023MSS maximum segment size 1024MSTP Multiple Spanning Tree Protocol 1025MT machine translation 1026MTA mail transfer agent 1027MTBF mean time between failures 1028MTP media transfer protocol 1029MTRR memory type range register 1030MTTF mean time to failure 1031MTU maximum transmission unit 1032MUA mail user agent 1033MUD multi-user domain 1034MVCC multiversion concurrency control 1035MVR multicast VLAN registration 1036MVRP multiple VLAN registration protocol 1037MWE module width encoding 1038MX mail exchange 1039NACK negative acknowledgement 1040NAK negative acknowledgement 1041NAN neighbor awareness networking 1042NAN not a number 1043NAPT Network Address Port Translation 1044NAS network attached storage 1045NAT network address translation 1046NAV network allocation vector 1047NC numerical control 1048NC-SI network controller sideband interface 1049NCO numerically-controlled oscillator 1050NCP Network Control Protocol 1051NCSI network connectivity status indicator 1052NCQ native command queuing 1053ND neighbor discovery 1054NDFA nondeterministic finite automaton 1055NDIS network driver interface specification 1056NE numeric error 1057NEWS Network extensible Window System 1058NFA nondeterministic finite automaton 1059NFC near-field communication 1060NFCI no functional change intended 1061NFS network file system 1062NFV network function virtualization 1063NIA next instruction address 1064NIC network information center 1065NIC network interface card 1066NIDS network intrusion detection system 1067NIP network interface protocol 1068NIPS network intrusion prevention system 1069NIS network information service 1070NIST National Institute of Standards and Technology 1071NLS native language support 1072NMI non-maskable interrupt 1073NNTP Network News Transfer Protocol 1074NOC network operations center 1075NOP no operation 1076NOS network operating system 1077NP nondeterministic polynomial time 1078NRND not recommended for new designs 1079NRZ non-return to zero 1080NSA nation-state adversary 1081NSA no such agency 1082NSA National Security Agency 1083NTM non-deterministic Turing machine 1084NTP Network Time Protocol 1085NUMA non-uniform memory access 1086NURBS non-uniform rational basis spline 1087NVMM NetBSD Virtual Machine Monitor 1088NVMM non-volatile main memory 1089NVRAM non-volatile random access memory 1090NW not write-through 1091NX no execute 1092OAEP optimal asymmetric encryption padding 1093OAM operations, administration, and {management,maintenance} 1094OBO off by one 1095OBOE off by one error 1096OCL object constraint language 1097OCR optical character recognition 1098ODE offline device environment 1099ODI open data-link interface 1100ODM object data manager 1101ODCM on-demand clock modulation 1102ODT on-die termination 1103OEM original equipment manufacturer 1104OFB output feedback 1105OFDM orthogonal frequency division multiplexing 1106OFET organic field-effect transistor 1107OLAP online analytical processing 1108OLE object linking and embedding 1109OLTP online transaction processing 1110ONFI open nand flash interface 1111OO OpenOffice 1112OO object oriented 1113OOB out of band 1114OOE out of order execution 1115OOM out of memory 1116OOO OpenOffice.org 1117OOP object oriented programming 1118OOPS object oriented programming systems 1119OOSE object oriented software engineering 1120OPM operations per minute 1121OPS operations per second 1122OQL Object Query Language 1123ORB object request broker 1124ORM object-relational mapping 1125OS operating system 1126OSD object-based storage device 1127OSD open source definition 1128OSF open software foundation 1129OSI Open Source Initiative 1130OSI open systems interconnection 1131OSPF open shortest path first 1132OSPM OS power management 1133OSS open sound system 1134OSS open source software 1135OSVW operating system visible workarounds 1136OTP one time password 1137OTP open telecom platform 1138OU organizational unit 1139OUI organizationally unique identifier 1140OWASP Open Web Application Security Project 1141OWL Web Ontology Language 1142P2P PCI to PCI 1143P2P peer to peer 1144PA phase accumulator 1145PA physical address 1146PAAS platform as a service 1147PAC phase-amplitude converter 1148PAE physical address extension 1149PAGP port aggregation protocol 1150PAL phase alternating line 1151PAL programmable array logic 1152PAM pluggable authentication modules 1153PAM pulse amplitude modulation 1154PAP password authentication protocol 1155PAT page attribute table 1156PAT port address translation 1157PATA parallel ATA 1158PAX portable archive exchange 1159PBE pending break encoding 1160PBE programming by example 1161PBR partition boot record 1162PBX private branch exchange 1163PC personal computer 1164PC program counter 1165PCB printed circuit board 1166PCB process control block 1167PCB Protocol Control Block 1168PCBC propagating cipher block chaining 1169PCC Portable C Compiler 1170PCD page-level cache disable 1171PCE path computation element 1172PCE performance-monitor counter enable 1173PCEP Path Computation Element Protocol 1174PCH platform controller hub 1175PCI peripheral component interconnect 1176PCM phase change memory 1177PCM pulse code modulation 1178PCMCIA Personal Computer Memory Card International Association 1179PCP Port Control Protocol 1180PD public domain 1181PDA personal digital assistant 1182PDA pushdown automaton 1183PDAG propositional directed acyclic graph 1184PDB power distribution board 1185PDF portable document format 1186PDM pulse-duration modulation 1187PDN pull-down network 1188PDP page {descriptor,directory} page 1189PDS product data sheet 1190PDU protocol data unit 1191PE protection enable 1192PE provider edge 1193PEAP Protected EAP 1194PECI platform environment control interface 1195PEP protocol extension protocol 1196PER packed encoding rules 1197PFS perfect forward secrecy 1198PGAS partitioned global address space 1199PGE page global enable 1200PGP Pretty Good Privacy 1201PHB PCI host bridge 1202PHP PHP: Hypertext Preprocessor 1203PIC performance instrumentation counters 1204PIC position independent code 1205PIC programmable interrupt controller 1206PICNIC problem in chair, not in computer 1207PID process id 1208PIE position independent executable 1209PIL Priority Interrupt Level 1210PIM personal information manager 1211PIM platform-independent model 1212PIO programmed input/output 1213PIPT physically indexed, physically tagged 1214PIQ prefetch input queue 1215PIT programmable interrupt timer 1216PIV personal identity verification 1217PIX Private Internet eXchange 1218PKCS public-key cryptography standards 1219PKI public key infrastructure 1220PLC programmable logic controller 1221PLD programmable logic device 1222PLL phase locked loop 1223PLRU pseudo LRU 1224PLTM package level thermal management 1225PM power management 1226PM {phase,pulse} modulation 1227PMC performance monitoring counters 1228PME power management event 1229PMEG page map entry group 1230PMI performance monitoring infrastructure 1231PMI platform management interrupt 1232PMIC power management integrated circut 1233PMIO port-mapped input/output 1234PMT photo-multiplier tube 1235PMU performance monitoring units 1236PMU power management unit 1237PNG portable network graphics 1238PNP plug and play 1239POE power over ethernet 1240POF probability of failure 1241POP Post Office Protocol 1242POP power on password 1243POR plan of record 1244POSIX Portable Operating System Interface [for Unix] 1245POST power on self test 1246POTS plain old telephone system 1247POWER Performance Optimization With Enhanced RISC 1248POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1249PP pair programming 1250PPB PCI [to] PCI bridge 1251PPC PowerPC 1252PPC Power Performance Computing 1253PPI pixels per inch 1254PPM pages per minute 1255PPP Point-to-Point Protocol 1256PPPOA Point-to-Point Protocol over ATM 1257PPPOE Point-to-Point Protocol over Ethernet 1258PPR processor programming reference 1259PPT powerpoint 1260PPT punched paper tape 1261PPU physics processing unit 1262PRAM Parameter RAM 1263PRBS pseudorandom bit sequence 1264PRG pseudorandom generator 1265PRF pseudorandom function [family] 1266PRML partial response, maximum likelihood 1267PRN pseudorandom {noise,number} 1268PRNG pseudorandom number generator 1269PROM programmable read only memory 1270PRP pseudorandom permutation 1271PRU Programmable Realtime Unit 1272PS PostScript 1273PSD power spectral density 1274PSE page size extensions 1275PSK phase shift keying 1276PSK pre-shared key 1277PSTN public switched telephone network 1278PSW program status word 1279PTE page table entry 1280PTLA pseudo top level aggregator 1281PTP page table page 1282PTV perceived target value 1283PU processing unit 1284PUC personal unblocking code 1285PUN physical unit number 1286PV physical volume 1287PVC permanent virtual circuit 1288PVG physical volume group 1289PVI protected-mode virtual interrupt 1290PVRST Per-VLAN rapid spanning tree 1291PVST Per-VLAN Spanning Tree 1292PWM pulse width modulation 1293PXE preboot execution environment 1294QA quality assurance 1295QAM quadrature amplitude modulation 1296QAM quality assurance management 1297QBE query by example 1298QC quality control 1299QDI quasi delay insensitive 1300QCIF quarter common intermediate format 1301QOI quality of implementation 1302QOI quick order interface 1303QOS quality of service 1304QVL qualified vendor list 1305R/O read only 1306R/W read/write 1307RA receiver address 1308RA remote assistance 1309RA resource affinity 1310RA router advertisement 1311RAD rapid application development 1312RADIUS remote authentication dial-in user service 1313RAID redundant array of {independent,inexpensive} disks 1314RAM random access memory 1315RAS reliability, availability and serviceability 1316RAS remote access service 1317RAS restartable atomic sequence 1318RAS row address strobe 1319RBF radial basis function 1320RBNF routing backus-naur form 1321RBT red-black tree 1322RC release candidate 1323RC remote control 1324RC run commands 1325RCS Revision Control System 1326RCS revision control system 1327RCU read, copy, update 1328RDB Rigid Disk Block 1329RDBMS relational database management system 1330RDF Resource Description Framework 1331RDM relational data model 1332RDMA remote direct memory access 1333RDP remote desktop protocol 1334RDRAM Rambus DRAM 1335RE regular expression 1336REPL read, evaluate, print, loop 1337REST representational state transfer 1338RF radio frequency 1339RFB remote frame buffer 1340RFI radio frequency interference 1341RFO request for ownership 1342RFU reserved for future use 1343RGB red green blue 1344RGBA red green blue alpha 1345RGMII reduced gigabit media independent interface 1346RH read hit 1347RHEL Red Hat Enterprise Linux 1348RHL Red Hat Linux 1349RIB routing information base 1350RIFF Resource Interchange File Format 1351RIP Raster Image Processor 1352RIP Routing Information Protocol 1353RIR regional Internet registry 1354RISC reduced instruction set {computer,computing} 1355RKM ROM Kernel Manual 1356RLE run length encoding 1357RLL run length limited 1358RLO right-to-left override 1359RM read miss 1360RMCP Remote Management Control Protocol 1361RMI remote method invocation 1362RMO Relaxed Memory Ordering 1363RMPM rapid memory power management 1364RMS root mean square 1365RMW read, modify, write 1366RNG random number generator 1367ROM read only memory 1368RPC remote procedure call 1369RPKI resource PKI 1370RPL requested privilege level 1371RPM revolutions per minute 1372RPN reverse Polish notation 1373RPVST Rapid Per-VLAN Spanning Tree 1374RR random replacement 1375RR round robin 1376RS relay station 1377RSA Rivest, Shamir, [and] Adleman 1378RSIP Realm Specific IP 1379RSN Robust Secure Network 1380RSS really simple syndication 1381RSS Receive Side Scaling 1382RSS residual sum of squares 1383RSTP Rapid Spanning Tree Protocol 1384RT real time 1385RTC real time clock 1386RTC real time computing 1387RTF rich text format 1388RTL register transfer language 1389RTL resistor-transistor logic 1390RTL right to left 1391RTOS real time operating system 1392RTP Real-time Transport Protocol 1393RTS request to send 1394RTT round trip time 1395RUP rational unified process 1396RW Rabin-Williams 1397RWM read-write memory 1398RX {receive,receiver} 1399S/PDIF Sony/Philips Digital Interface Format 1400SA security advisory 1401SA security association 1402SA source address 1403SA structured analysis 1404SAAS software as a service 1405SABRE Semi-automated business research environment 1406SACD super audio compact disc 1407SAD security association database 1408SAF-TE SCSI accessed fault-tolerant enclosure 1409SAGE Semi-automated ground environment 1410SAL {service,system} abstraction layer 1411SAM serial access memory 1412SAM sum addressed memory 1413SAML security assertion markup language 1414SAN storage area network 1415SAP service access point 1416SAPIC streamlined advanced programmable interrupt controller 1417SASD structured analysis, structured design 1418SASI Shugart Associates System Interface 1419SASL simple authentication [and] security layer 1420SATA serial advanced technology attachment 1421SAX simple API for XML 1422SB sound blaster 1423SBSA server base system architecture 1424SBU standard build unit 1425SC store conditional 1426SCA source code analyzer 1427SCADA supervisory control and data acquisition 1428SCC single chip cloud 1429SCC source code control 1430SCCP skinny call control protocol 1431SCCS Source Code Control System 1432SCI scalable coherent interface 1433SCI system control interrupt 1434SCIM smart common input method 1435SCM software configuration management 1436SCM source code management 1437SCM storage-class memory 1438SCO synchronous connection orientated 1439SCP secure copy 1440SCP system control processor 1441SCPI system control and power interface 1442SCSI Small Computer System Interface 1443SCTP Stream Control Transmission Protocol 1444SDDC software defined data center 1445SDEI software delegated exception interface 1446SDI symbol deinterleave 1447SDK software development kit 1448SDL Simple Declarative Language 1449SDL Simple Direct-media Layer 1450SDLC {software,system,systems} development life cycle 1451SDN software defined networking 1452SDP Session Description Protocol 1453SDR software defined radio 1454SDRAM synchronous dynamic random access memory 1455SDS software defined storage 1456SDT syntax-directed translation 1457SEA synchronous external abort 1458SEGV segmentation violation 1459SED self-encrypting drive 1460SED stream editor 1461SEMB serial ATA enclosure management bridge 1462SEO search engine optimization 1463SES SCSI enclosure services 1464SFC sequential function chart 1465SFI simple firmware interface 1466SFI software fault isolation 1467SFTP SSH File Transfer Protocol 1468SFTP Serial File Transfer Protocol 1469SFTP Simple File Transfer Protocol 1470SGI Silicon Graphics, Inc 1471SGI software generated interrupt 1472SGMII serial gigabit media independent interface 1473SGPIO serial general purpose input/output 1474SGRAM synchronous graphics random access memory 1475SHA secure hash algorithm 1476SICP structure and interpretation of computer programs 1477SIDH supersingular isogeny Diffie-Hellman 1478SIEM security information and event management 1479SIF source input format 1480SIFS short inter-frame space 1481SIM subscriber identity module 1482SIMD single instruction, multiple data 1483SIMM single inline memory module 1484SIP Session Initiation Protocol 1485SIR signal-to-interference ratio 1486SIR slow infrared 1487SISD single instruction, single data 1488SLAAC stateless address auto-configuration 1489SLC single-level cell 1490SLDRAM synchronous-link dynamic random access memory 1491SLED single large expensive disk 1492SLI scalable link interface 1493SLI scan-line interleave 1494SLIC system license internal code 1495SLOC source lines of code 1496SLRU segmented LRU 1497SMA smart memory access 1498SMAF system management action field 1499SMAP Simple Mail Access Protocol 1500SMAP supervisor mode access prevention 1501SMART self-monitoring analysis and reporting technology 1502SMB Server Message Block 1503SMB system management bus 1504SMBIOS System Management BIOS 1505SMC system management controller 1506SMD storage module device 1507SMEP supervisor mode execution protection 1508SMF single mode fiber 1509SMI structure of management information 1510SMI system management interrupt 1511SMM system management mode 1512SMP serial management protocol 1513SMP symmetric multiprocessing 1514SMR shingled magnetic recording 1515SMR state machine replication 1516SMT simultaneous multithreading 1517SMTP Simple Mail Transfer Protocol 1518SMU system management unit 1519SNA systems network architecture 1520SNAP Sub-Network Access Protocol 1521SNIA Storage Networking Industry Association 1522SNMP Simple Network Management Protocol 1523SNR signal-to-noise ratio 1524SOA service oriented architecture 1525SOAP Simple Object Access Protocol 1526SOC system on chip 1527SOF start of frame 1528SOH start of header 1529SOHO small office/home office 1530SOL serial over LAN 1531SOM system on module 1532SP service pack 1533SP stack pointer 1534SPA storage pool allocator 1535SPAN switched port analyzer 1536SPARC scalable processor architecture 1537SPARQL SPARQL Protocol and RDF Query Language 1538SPD security policy database 1539SPD serial presence detect 1540SPDIF Sony/Philips digital interface format 1541SPI serial peripheral interface 1542SPI stateful packet inspection 1543SPL system interrupt priority level 1544SPL spinlock 1545SPMD single process, multiple data 1546SPR special purpose register 1547SPT sectors per track 1548SQA software quality assurance 1549SQCIF sub quarter common intermediate format 1550SQL Structured Query Language 1551SRAM static random access memory 1552SRC sample rate conversion 1553SRP SCSI RDMA protocol 1554SRR shaped round robin 1555SRTP Secure Real-time Transport Protocol 1556SS self-snoop 1557SS stack segment 1558SSA static single assignment 1559SSAP source service access point 1560SSB single-sideband modulation 1561SSC spread spectrum clock 1562SSD solid state drive 1563SSE streaming SIMD extensions 1564SSFDC solid state floppy disc card 1565SSH secure shell 1566SSI server side includes 1567SSID service set identifier 1568SSTP secure socket tunneling protocol 1569SSL secure sockets layer 1570SSP stack smashing protection 1571STC software thermal control 1572STD state transition diagram 1573STM software transactional memory 1574STOMP Streaming Text Oriented Messaging Protocol 1575STP Spanning Tree Protocol 1576STP shielded twisted pair 1577STRG spanning tree root guard 1578SUN Stanford University Network 1579SUS Single Unix Specification 1580SUT system under test 1581SVC switched virtual circuit 1582SVG scalable vector graphics 1583SVGA Super Video Graphics Array 1584SVI {switch,switched} virtual interface 1585SVM secure virtual machine 1586SVM support vector machine 1587SVR System V Release 1588SVS Separate Virtual Space 1589SWF Shockwave Flash 1590SWIG simplified wrapper [and] interface generator 1591SYR symbol timing recovery 1592TA test assertion 1593TA transmitter address 1594TACACS terminal access controller access-control system 1595TAI international atomic time 1596TAO track at once 1597TAOCP The Art of Computer Programming 1598TAP Test Anything Protocol 1599TAS test and set 1600TB terabyte 1601TBNF transitional backus-naur form 1602TCB trace capture buffer 1603TCB trusted computing base 1604TCC thermal control circuit 1605TCL tool command language 1606TCP Transmission Control Protocol 1607TCQ tagged command queueing 1608TDC time [to] digital converter 1609TDD test-driven development 1610TDD time division duplex 1611TDM time division multiplexing 1612TDMA time division multiple access 1613TDOA time difference of arrival 1614TDP thermal design {point,power} 1615TDR time-domain reflectometry 1616TECO Text Editor and Corrector 1617TFT thin film transistor 1618TFTP Trivial File Transfer Protocol 1619TIAS try it and see 1620TIFF tagged image file format 1621TITS try it to see 1622TK temporal key 1623TKIP Temporal Key Integrity Protocol 1624TLA top level aggregator 1625TLB translation lookaside buffer 1626TLD top level domain 1627TLER time-limited error recovery 1628TLI transport layer interface 1629TLS thread local storage 1630TLS transport layer security 1631TM Turing machine 1632TM thermal monitor 1633TMG transmogrifier 1634TMDS transition minimized differential signaling 1635TMO timeout 1636TOD time of day 1637TOE TCP offload engine 1638TOFU trust on first use 1639TOS terms of service 1640TOS trusted operating system 1641TOS type of service 1642TOTP time-based one time password 1643TP transaction processing 1644TPI tracks per inch 1645TPM transactions per minute 1646TPM trusted platform module 1647TPR task priority register 1648TPS transactions per second 1649TPS transmission parameters signaling 1650TR task register 1651TR token ring 1652TRL timing recovery loop 1653TRNG true random number generator 1654TS terminal services 1655TS time series 1656TS time stamp 1657TS transport stream 1658TSAN Thread Sanitizer 1659TSC time stamp counter 1660TSD time stamp disable 1661TSDB time series database 1662TSL test, set, lock 1663TSO time sharing option 1664TSO TCP segmentation offload 1665TSO Total Store Ordering 1666TSP Time-Stamp Protocol 1667TSP Tunnel Setup Protocol 1668TSP time synchronization protocol 1669TSP traveling salesman problem 1670TSS task state segment 1671TSV tab-separated values 1672TTL time to live 1673TTL transistor-transistor logic 1674TTM translation table maps 1675TTY teletype 1676TUI {terminal,text-based,textual} user interface 1677TX {transmit out,transmitter} 1678TXG transaction group 1679TZ time zone 1680UAC user {access,account} control 1681UAF use-after-free 1682UART universal asynchronous receiver/transmitter 1683UAT user acceptance testing 1684UB undefined behavior 1685UBSAN Undefined Behavior Sanitizer 1686UC uncacheable 1687UCS uniform-cost search 1688UCS unified computing system 1689UCS universal coded character set 1690UDI uniform driver interface 1691UDMA ultra DMA 1692UDO ultra density optical 1693UDP User Datagram Protocol 1694UEFI unified extensible firmware interface 1695UFO UDP fragmentation offload 1696UFS Unix File System 1697UGA universal graphics adapter 1698UI unit interval 1699UI user interface 1700UICC universal integrated circuit card 1701UID unique identifier 1702UID user identifier 1703UL upload 1704UMA uniform memory access 1705UMA upper memory area 1706UMB upper memory block 1707UML unified modeling language 1708UMPC ultra-mobile PC 1709UPNP universal plug and play 1710UPS uninterruptible power supply 1711URI uniform resource identifier 1712URL uniform resource locator 1713URN uniform resource name 1714USART universal synchronous/asynchronous receiver/transmitter 1715USB universal serial bus 1716USWC uncacheable speculative write combining 1717UT unit test 1718UTC coordinated universal time 1719UTF unicode transformation formats 1720UTP unshielded twisted pair 1721UTS UNIX time-sharing 1722UUCP Unix-to-Unix Copy Protocol 1723UUID universally unique identifier 1724UUOC useless use of cat 1725UUT unit under test 1726UX user experience 1727VA vertical alignment 1728VA virtual address 1729VA volt-ampere 1730VAX virtual address extension 1731VB Visual Basic 1732VBR volume boot record 1733VCA variable-gain amplifier 1734VCC common collector voltage 1735VCCP virtual chassis control protocol 1736VCF voltage-controlled filter 1737VCM virtual channel memory 1738VCO voltage-controlled oscillator 1739VCP virtual chassis port 1740VCS version control system 1741VDPAU Video Decode and Presentation API for Unix 1742VES virtual execution system 1743VESA Video Electronics Standards Association 1744VFO variable-frequency oscillator 1745VFS virtual file system 1746VG volume group 1747VGA Video Graphics Array 1748VHDCI very high density cable interconnect 1749VID {VLAN,voltage level} identifier 1750VIM Vi IMproved 1751VIPT virtually indexed, physically tagged 1752VIVT virtually indexed, virtually tagged 1753VLAN virtual local area network 1754VLD variable-length decoding 1755VLIW very long instruction word 1756VLSI very large scale integration 1757VLSM variable length subnet mask 1758VM virtual {machine,memory} 1759VME virtual mode extension 1760VMX vector multimedia extensions 1761VMX virtual machine extensions 1762VNC virtual network computing 1763VOD video on demand 1764VPD vital product data 1765VPN virtual private network 1766VPWS virtual private wire service 1767VR virtual reality 1768VRAM video random access memory 1769VRF virtual routing and forwarding 1770VRM voltage regulator module 1771VROC Virtual RAID On CPU 1772VRRP Virtual Router Redundancy Protocol 1773VSTP VLAN Spanning Tree Protocol 1774VTP VLAN Trunking Protocol 1775VXFS Veritas file system 1776VXVM Veritas volume manager 1777W watt 1778W3C World Wide Web Consortium 1779WAFL write anywhere file layout 1780WAMP Web Application Messaging Protocol 1781WAN wide area network 1782WAP Wireless Application Protocol 1783WAP wireless access point 1784WDM Windows Driver Model 1785WDDM Windows Display Driver Model 1786WDT watchdog timer 1787WEP Wired Equivalent Privacy 1788WFI wait for interrupt 1789WFQ weighted fair queuing 1790WH write hit 1791WHEA Windows hardware error architecture 1792WIFI wireless fidelity 1793WLAN wireless local area network 1794WM write miss 1795WMF Windows meta file 1796WMI Windows Management Instrumentation 1797WOL Wake-on-LAN 1798WOM Wake-on-Modem 1799WOR Wake-on-Ring 1800WORM write once read many 1801WP WordPerfect 1802WP word processor 1803WP write protect 1804WPA Wi-Fi Protected Access 1805WPA2 Wi-Fi Protected Access II 1806WPAD web proxy auto-discovery protocol 1807WPS Wi-Fi Protected Setup 1808WRAM window random access memory 1809WS web services 1810WTC write through caching 1811WTD weighted tail drop 1812WWAN wireless wide area network 1813WWW world wide web 1814WYSIAYG what you see is all you get 1815WYSIWYG what you see is what you get 1816XBAR crossbar 1817XDMCP X Display Manager control protocol 1818XER XML encoding rules 1819XGA Extended Graphics Array 1820XHR XMLHttpRequest 1821XIP execute in place 1822XML Extensible Markup Language 1823XNA XNA's not acronymed 1824XNS Xerox network systems 1825XOR exclusive or 1826XP extreme programming 1827XSI X/Open System Interface 1828XSL extensible stylesheet language 1829XSLT extensible stylesheet language transformations 1830XSS cross site scripting 1831XT extended technology 1832XTACACS extended terminal access controller access-control system 1833XTI X/Open transport interface 1834XUL XML user interface language 1835YACC yet another compiler compiler 1836YAML YAML ain't markup language 1837YANG yet another next generation 1838YAWPFAPR you are welcome; please file a problem report 1839YP Yellow Pages 1840YTD year to date 1841ZAP ZFS attribute processor 1842ZBR zone bit recording 1843ZFOD zero-filled on demand 1844ZFS zettabyte file system 1845ZIF zero insertion force 1846ZIFS zero insertion force socket 1847ZIL ZFS intent log 1848ZMA zone multicast address 1849ZOI zero one infinity 1850ZOI zone of influence 1851ZPL ZFS Posix layer 1852ZVOL ZFS Volume 1853