acronyms.comp revision 1.331
1$NetBSD: acronyms.comp,v 1.331 2023/01/26 22:20:16 jschauma Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABE attribute-based encryption 8ABI application binary interface 9ABNF augmented backus-naur form 10ABR available bit rate 11ABRT automatic bug reporting tool 12AC alternating current 13ACI adjacent channel interferer 14ACID atomicity, consistency, isolation, durability 15ACK Amsterdam compiler kit 16ACK acknowledgement 17ACL access control list 18ACL active current loop 19ACL asynchronous connection less 20ACP auxiliary control {process,program} 21ACPI advanced configuration and power interface 22ACS access control set 23ACU automatic calling unit 24ADB Apple desktop bus 25ADC analog [to] digital converter 26ADD acronym driven development 27ADDDC adaptive double DRAM device correction 28ADO active data objects 29ADP automatic data processing 30ADPCM adaptive differential pulse code modulation 31ADS alternate data stream 32ADSL asymmetric digital subscriber line 33ADT abstract data type 34AEAD authenticated encryption with associated data 35AEDC advanced error detection and correction 36AER advanced error reporting 37AES Advanced Encryption Standard 38AFP Apple Filing Protocol 39AFS Andrew File System 40AGC automatic gain control 41AGP accelerated graphics port 42AI analog input 43AI artificial intelligence 44AL access list 45AL active link 46ALE address latch enable 47ALS ambient light sensor 48ALSA advanced Linux sound architecture 49ALU arithmetic and logical unit 50ALUA asymmetric logical unit access 51AM access method 52AM alignment mask 53AM amplitude modulation 54AMD Advanced Micro Devices Inc 55AMDD Agile model-driven development 56AMI alternate mark inversion 57AMP asymmetric multiprocessing 58AMQP advanced message queuing protocol 59AMT active management technology 60AN Arabic number 61ANR application not responding 62ANSI American National Standards Institute 63AO analog output 64AOC add-on card 65AOL Alert-on-LAN 66AOS add or subtract 67AOT ahead of time 68AP access point 69AP application processor 70APFS Apple file system 71API application programming interface 72APEI ACPI platform error interface 73APIC advanced programmable interrupt controller 74APIPA automatic private IP addressing 75APM advanced power management 76APM application performance management 77APU accelerated processing unit 78APT advanced persistent threat 79AQM active queue management 80ARAT always running APIC timer 81ARC adaptive replacement cache 82ARC Advanced RISC Computing 83ARC automatic reference counting 84ARM Advanced RISC Machines 85ARP Address Resolution Protocol 86ARPA Advanced Research Projects Agency 87ARQ automatic repeat request 88ARR address range register 89ARU audio response unit 90AS autonomous system 91ASA Adaptive Security Appliance 92ASAN Address Sanitizer 93ASC advanced smart cache 94ASCII American Standard Code for Information Interchange 95ASD agile software development 96ASE advanced software environment 97ASF alert standard format 98ASIC application-specific integrated circuit 99ASK amplitude shift keying 100ASLR address space layout randomization 101ASN autonomous system number 102ASP active server pages 103ASP auxiliary storage pool 104ASPM active state power management 105ASQ automated software quality 106ASR address space register 107ASR Apple software restore 108AST abstract syntax tree 109AST asynchronous system trap 110AT access time 111AT advanced technology 112ATA advanced technology attachment 113ATAPI advanced technology attachment packet interface 114ATC address translation cache 115ATF ARM trusted firmware 116ATF automated testing framework 117ATM asynchronous transfer mode 118ATX advanced technology extended 119AV anti virus 120AVB audio video bridging 121AVL Adelson-Velsky-Landis 122AVX advanced vector extensions 123AWDL Apple wireless direct link 124BA byte align 125BAL basic assembly language 126BAR base address register 127BBS bulletin board system 128BCC blind carbon copy 129BCD binary coded decimal 130BCH boot console handler 131BCR byte count register 132BCS base configuration space 133BD baud 134BDD binary decision diagram 135BDI bit deinterleave 136BDUF big design up front 137BEDO burst extended data output 138BER basic encoding rules 139BER bit error {rate,ratio} 140BERT boot error record table 141BFD bidirectional forwarding detection 142BFD binary {file,format} descriptor 143BFKL big fscking kernel lock 144BFS breadth-first search 145BFT binary file transfer 146BGA ball grid array 147BGP Border Gateway Protocol 148BGPSEC BGP Security 149BIND Berkeley Internet Name Daemon 150BIOS Basic Input/Output System 151BIOS built-in operating system 152BIST built-in self-test 153BIU bus interface unit 154BKDG BIOS and kernel developer's guide 155BLAS basic linear algebra subprograms 156BLC back light control 157BLE Bluetooth low energy 158BLOB binary large object 159BM bus master 160BMC baseboard management controller 161BMP basic multilingual plane 162BMP bitmap image file 163BMIC bus master interface controller 164BN boundary neutral 165BNF Backus-Naur form 166BO binary output 167BOF beginning of file 168BOM beginning of message 169BOM byte order mark 170BP base pointer 171BP boot processor 172BPB BIOS parameter block 173BPDU bridge protocol data unit 174BPF Berkeley Packet Filter 175BPI bits per inch 176BPM business process modelling 177BPS bits per second 178BPSK binary phase shift keying 179BQS Berkeley quality software 180BRE basic regular expression 181BS backspace 182BS binary sequence 183BSA basic service area 184BSD Berkeley Software Distribution 185BSDP Boot Service Discovery Protocol 186BSF bit scan forward 187BSOD blue screen of death 188BSP binary space partition 189BSP board support package 190BSP bootstrap processor 191BSR bit scan reverse 192BSS basic service set 193BSS block started by symbol 194BSSID basic service set identifier 195BT BitTorrent 196BT Bluetooth 197BT bit test 198BTC bit test [and] complement 199BTM bus transport mechanism 200BTR bit test [and] reset 201BTS bit test [and] set 202BTS bug tracking system 203BW bandwidth 204BWM block-write mode 205BUAG big ugly ASCII graphic 206CA certificate authority 207CACLS change access control lists 208CAD computer-aided design 209CAM computer assisted manufacturing 210CAM conditional access module 211CAM content addressable memory 212CARP Common Address Redundancy Protocol 213CAS column address strobe 214CAS compare and swap 215CAS computer algebra system 216CASE computer aided software engineering 217CAU control access unit 218CAV constant angular velocity 219CBC cipher block chaining 220CBR constant bit rate 221CC carbon copy 222CCC Chaos Computer Club 223CCD charge coupled device 224CCI co-channel interferer 225CCNUMA cache-coherent non-uniform memory access 226CCTL command completion time limit 227CD cache disable 228CD compact disc 229CDDA compact disc digital audio 230CDL compiler description language 231CDMA code division multiple access 232CDN content delivery network 233CDP Cisco Discovery Protocol 234CDRAM cache dynamic random access memory 235CER canonical encoding rules 236CE customer edge 237CF compact flash 238CFB cipher feedback 239CFG context-free grammar 240CFG control-flow graph 241CFI control-flow integrity sanitizer 242CG control gate 243CGA Color Graphics Adapter 244CGI common gateway interface 245CGN Carrier-Grade NAT 246CHAP Challenge-Handshake Authentication Protocol 247CHFS chip file system 248CHS cylinder/head/sector 249CI continuous integration 250CI {common,component} interface 251CIA confidentiality, integrity, availability 252CIDR Classless Inter-Domain Routing 253CIF common intermediate format 254CIFS Common Internet File System 255CIL common intermediate language 256CIR carrier-to-interference ratio 257CIS contact image sensor 258CISC complex instruction set {computer,computing} 259CJK Chinese, Japanese, [and] Korean 260CLF common log format 261CLI command line interface 262CLI common language infrastructure 263CLR common language runtime 264CLS common language specification 265CLTT closed loop thermal throttling 266CLUT color look-up table 267CLV constant linear velocity 268CM configuration management 269CMA concert multithread architecture 270CMC chassis management controller 271CMC corrected machine check 272CMS {configuration,content,course} management system 273CMI control {management,method} interface 274CMOS complementary metal-oxide-semiconductor 275CMP chip multi-processing 276CMS content management system 277CMYK cyan magenta yellow black 278CN {common,canonical} name 279CNC computer numerical control 280CNR carrier-to-noise ratio 281COA change of authority 282COF current operating frequency 283COFDM coded orthogonal frequency division multiplexing 284COFF common object file format 285COM component object model 286COM computer on module 287COMA cache-only memory architecture 288CORBA common object request broker architecture 289COS class of service 290COW copy-on-write 291CP continuous pilot 292CPA chosen-plaintext attack 293CPB core performance boost 294CPC central processor complex 295CPC cpu performance counters 296CPE common phase error 297CPE common platform enumeration 298CPER common platform error record 299CPG clock pulse generator 300CPI cycles per instruction 301CPL current privilege level 302CPLD complex programmable logic device 303CPP C preprocessor 304CPS characters per second 305CPS continuation-passing style 306CPT command pass through 307CPU central processing unit 308CR carriage return 309CRC cyclic redundancy check 310CRL carrier recovery loop 311CRLF carriage return line feed 312CSPM cloud security posture management 313CSU C start up 314CRT cathode ray tube 315CRTP curiously recurring template pattern 316CRUD create, read, update, and delete 317CS cable select 318CS chip select 319CS code segment 320CS computer science 321CSDL {common,conceptual} schema definition language 322CSI channel state information 323CSI common system interface 324CSMA carrier sense multiple access 325CSMA/CA carrier sense multiple access with collision avoidance 326CSMA/CD carrier sense multiple access with collision detection 327CSP communicating sequential processes 328CSP content security policy 329CSP constrain satisfaction problems 330CSP cryptographic service provider 331CSR control [and] status registers 332CSRG Computer Systems Research Group 333CSS cascading style sheets 334CST common spanning tree 335CSV comma-separated values 336CTF compact c type format 337CTM close to metal 338CTR counter [mode] 339CTS clear to send 340CTS common type system 341CUA common user access 342CUT coordinated universal time 343CV control voltage 344CVE common vulnerabilities and exposures 345CVS Concurrent Versions System 346DA destination address 347DAA distributed application architecture 348DAAP digital audio access protocol 349DAB digital audio broadcasting 350DAC digital [to] analog converter 351DAC discretionary access control 352DAD duplicate address detection 353DANE DNS-based Authentication of Named Entities 354DAO disk at once 355DAP Directory Access Protocol 356DAT digital audio tape 357DAT dynamic acceleration technology 358DB database 359DBA database administrator 360DBA dynamic bandwidth allocation 361DBB data bus buffer 362DBC design by contract 363DBL dynamic buffer limiting 364DBMS database management system 365DBS database server 366DC data center 367DC direct current 368DCC Direct Client-to-Client 369DCC direct cable connect 370DCD data carrier detect 371DCE data control equipment 372DCE distributed computing environment 373DCIM data center infrastructure management 374DCIM digital camera images 375DCL Digital Command Language 376DCOM distributed component object model 377DCOP Desktop COmmunication Protocol 378DCS data collection systems 379DCT discrete cosine transform 380DCU data cache unit 381DDC display data channel 382DDE dynamic data exchange 383DDI device drivers interface 384DDK device driver kit 385DDL data description language 386DDR double data rate 387DDS direct digital sound 388DDWG Digital Display Working Group 389DE debugging extensions 390DE desktop environment 391DEA data encryption algorithm 392DEC Digital Equipment Corporation 393DEK data encryption key 394DEP data execution prevention 395DER distinguished encoding rules 396DES Data Encryption Standard 397DF don't fragment 398DFA deterministic finite automaton 399DFC data flow control 400DFS depth first search 401DFS distributed file system 402DFSAN Data Flow Sanitizer 403DFT diagnostic function test 404DFT discrete Fourier transform 405DGL data generation language 406DGEMM double precision general matrix multiply 407DH Diffie-Hellman 408DHCP Dynamic Host Configuration Protocol 409DIA dedicated Internet access 410DIB device independent bitmap 411DIFS distributed inter-frame space 412DIMM dual inline memory module 413DIRT design in real time 414DKI driver/kernel interface 415DL diode logic 416DL discrete logarithm 417DL download 418DLCI data link connection identifier 419DLE data link escape 420DLL dynamic link library 421DLNA digital living network alliance 422DLP discrete logarithm problem 423DMA direct memory access 424DMI desktop management interface 425DMS document management system 426DMT discrete multitone modulation 427DMU data management layer 428DNARD Digital network appliance reference design 429DND drag and drop 430DNLC directory name lookup cache 431DNS Domain Name System 432DNSSEC DNS Security Extensions 433DOE distributed object environment 434DOF data over fibre 435DOM document object model 436DOS denial of service 437DOS disk operating system 438DP DisplayPort 439DPC deferred procedure call 440DPCM differential pulse code modulation 441DPD dead peer detection 442DPI deep packet inspection 443DPI dots per inch 444DPL descriptor privilege level 445DPS Display PostScript 446DPST display power savings technology 447DRAAS disaster recovery as a service 448DRAM dynamic random access memory 449DRBG deterministic random bit generator 450DRI direct rendering infrastructure 451DRM digital rights management 452DRM direct rendering manager 453DRRS display refresh rate switching 454DS debug store 455DS differentiated services 456DS9000 DeathStation 9000 457DS9K DeathStation 9000 458DSA digital signature algorithm 459DSAP destination service access point 460DSB double-sideband modulation 461DSCP differentiated services code point 462DSDT differentiated system descriptor table 463DSF device special file 464DSL dataset and snapshot layer 465DSL digital subscriber line 466DSL domain specific language 467DSLAM digital subscriber line access multiplexer 468DSN delivery status notification 469DSO dynamic shared object 470DSP digital signal processor 471DSSS direct sequence spread spectrum 472DTB device tree blob 473DTC device tree compiler 474DTD document type definition 475DTE data terminal equipment 476DTE dumb terminal emulator 477DTL diode-transistor logic 478DTLS datagram transport layer security 479DTS device tree source 480DTS digital thermal sensor 481DUT device under test 482DVB digital video broadcasting 483DVCS distributed version control system 484DVD digital versatile disc 485DVFS dynamic voltage and frequency scaling 486DVI device independent 487DVI Digital Visual Interface 488DVR digital video recorder 489E-XER extended XML encoding rules 490EABI embedded-application binary interface 491EAI Email Address Internationalization 492EAI Enterprise Application Integration 493EAP Extensible Authentication Protocol 494EAPOL EAP over Lan 495EAV entity-attribute-value model 496EAV ethernet audio/video bridging 497EBCDIC Extended Binary Coded Decimal Interchange Code 498EBDA Extended BIOS Data Area 499EBNF extended backus-naur form 500EBR extended boot record 501EC elliptic curve 502ECC elliptic curve cryptography 503ECC error correction code 504ECDH elliptic curve Diffie-Hellman 505ECDL elliptic curve discrete logarithm 506ECDLP elliptic curve discrete logarithm problem 507ECDSA elliptic curve digital signature algorithm 508ECL emitter-coupled logic 509ECN explicit congestion notification 510ECP enhanced capability port 511ECS enhanced chip set 512ECS extended configuration space 513EDAC error detection and correction 514EDAT enhanced dynamic acceleration technology 515EdDSA Edwards curve digital signature algorithm 516EDGE explicit data graph execution 517EDID extended display identification data 518EDO extended data out 519EDS electronical data sheet 520EDSAC electronic delay storage automatic calculator 521EDVAC electronic discrete variable automatic computer 522EEE energy efficient ethernet 523EEE embrace, extend, extinguish 524EEPROM electrically erasable programmable read only memory 525EFI extensible firmware interface 526EFL emitter follower logic 527EFM eight to fourteen modulation 528EFS extent file system 529EGA Enhanced Graphics Adapter 530EGP exterior gateway protocol 531EH extension header 532EIDE enhanced IDE 533EISA extended industry standard architecture 534EINJ error injection table 535ELF executable and linking format 536ELS entry level system 537EMI electro-magnetic interference 538EMP electro-magnetic pulse 539EMR electro-magnetic radiation 540EMACS Editor MACroS 541ENIAC electronic numerical integrator and computer 542EOF end of file 543EOI end of interrupt 544EOIS end of interactive support 545EOL end of life 546EOL end of line 547EOT end of transmission 548EPIC explicitly parallel instruction computing 549EPP enhanced parallel port 550EPRML extended partial response, maximum likelihood 551EPROM erasable programmable read only memory 552EPT extended page tables 553ERC error recovery control 554ERD emergency recovery disk 555ERD entity relationship diagram 556ERE extended regular expression 557ERST error record serialization table 558ESAN Efficiency Sanitizer 559ESB enterprise service bus 560ESDI enhanced small disk interface 561ESDRAM enhanced synchronous dynamic random access memory 562ESI enclosure services interface 563ESS electronic switching system 564ESS extended service set 565ESSID extended service set identifier 566EST enhanced speedstep 567ETL extract, transform, load 568EU execution unit 569EULA end user license agreement 570FAT file allocation table 571FBRAM frame buffer random access memory 572FCIF full common intermediate format 573FCL fiber channel loop 574FCS frame check sequence 575FDC floppy disk controller 576FDD floppy disk drive 577FDDI fiber distributed data interface 578FDE full disk encryption 579FDT flattened device tree 580FEA finite element analysis 581FEC forward error correction 582FET field-effect transistor 583FF finite field 584FF form feed 585FFDH finite-field Diffie-Hellman 586FFH functional fixed hardware 587FFI foreign function interface 588FFM focus follows mouse 589FFS Fast File System 590FFS find first set 591FFT fast Fourier transform 592FG floating gate 593FHRP first hop redundancy protocol 594FHSS frequency hop spread spectrum 595FID frequency identifier 596FIFO first in, first out 597FILO first in, last out 598FIPS Federal Information Processing Standards 599FIR fast infrared 600FLOPS floating [point] operations per second 601FLOSS free/libre/open source software 602FM frequency modulation 603FMR false match rate 604FOSS free/open source software 605FPGA field programmable gate array 606FPM fast page mode 607FPR floating point register 608FPU floating point unit 609FQDN fully qualified domain name 610FRR false rejection rate 611FRU field replaceable unit 612FS file system 613FSB front side bus 614FSCK file system check 615FSF Free Software Foundation 616FSK frequency shift keying 617FSM finite-state machine 618FTA fault tree analysis 619FTL flash translation layer 620FTP File Transfer Protocol 621FTPS File Transfer Protocol Secure 622FTTH fiber to the home 623FUS fast user switching 624FWH firmware hub 625FWS folding white space 626GAL generic array logic 627GARP generic attribute registration protocol 628GAS generic address structure 629GC garbage collector 630GCM Galois counter mode 631GCR group-coded recording 632GDI Graphics Device Interface 633GDT global descriptor table 634GECOS general comprehensive operating supervisor 635GEM graphics environment manager 636GEM graphics execution manager 637GEMM general matrix multiply 638GENA general event notification architecture 639GHC Glasgow Haskell compiler 640GHES generic hardware error source 641GIC generic interrupt controller 642GID group identifier 643GIF graphics interchange format 644GLBP gateway load balancing protocol 645GMCH graphics and memory controller hub 646GNU GNU's Not Unix 647GOP graphics output protocol 648GOT global offset table 649GPE general purpose event 650GPF general protection fault 651GPG GNU Privacy Guard 652GPL [GNU] General Public License 653GPR general purpose register 654GPS generalized processor sharing 655GPT GUID partition table 656GPU graphics processing unit 657GR golden ratio 658GRE generic routing encapsulation 659GRO generic receive offload 660GSI global system interrupt 661GSO generic send offload 662GUI graphical user interface 663GUID globally unique identifier 664GVFS git virtual file system 665HA high availability 666HAL hardware abstraction layer 667HAT hashed array tree 668HATEOAS hypermedia as the engine of application state 669HBA host bus adapter 670HCF halt and catch fire 671HCI host controller interface 672HCI human-computer interaction 673HCL hardware compatibility list 674HDCP High-bandwidth Digital Content Protection 675HDD hard disk drive 676HDL hardware description language 677HDMI High-Definition Multimedia Interface 678HDTV high-definition television 679HECI host embedded controller interface 680HEST hardware error source table 681HEVC high efficiency video coding 682HF high frequency 683HFM highest frequency mode 684HFS hierarchical file system 685HID human interface device 686HKDF HMAC-based key derivation function 687HKP HTTP Keyserver Protocol 688HLL high-level language 689HMA high memory area 690HMI human-machine interface 691HOOD hierarchical object oriented design 692HOTP HMAC-based one time password 693HP Hewlett-Packard 694HPC high performance computing 695HPD hot plug detection 696HPET high precision event timer 697HSM hardware security module 698HSM hierarchical storage management 699HSRP hot standby router protocol 700HT hyper-threading 701HTC hardware thermal control 702HTCC high temperature co-fired ceramic 703HTML HyperText Markup Language 704HTT hyper-threading technology 705HTTP Hypertext Transfer Protocol 706HTTPS Hypertext Transfer Protocol Secure 707HVM hardware virtual machine 708HVDS High-Voltage Differential Signaling 709HWASAN Hardware-assisted Address Sanitizer 710HZ Hertz 711I2O intelligent input/output 712IA information assurance 713IAAS infrastructure as a service 714IANA Internet Assigned Numbers Authority 715IBC iterated block cipher 716IBM International Business Machines 717IBPI international blinking pattern interpretation 718IBS instruction based sampling 719IBSS independent basic service set 720IC integrated circuit 721ICA independent computer architecture 722ICACLS integrity control access control lists 723ICB Internet Citizen's Band 724ICE in-circuit emulator 725ICE internal compiler error 726ICH I/O controller hub 727ICMP Internet Control Message Protocol 728ICT information and communications technology 729ICW initialization command word 730IDA Intel dynamic acceleration 731IDCMP Intuition direct communication message port 732IDCT inverse discrete cosine transform 733IDE integrated development environment 734IDE integrated drive electronics 735IDPS intrusion detection [and] prevention system 736IDRP inter-domain routing protocol 737IDS intrusion detection system 738IDT interrupt descriptor table 739IE Internet Explorer 740IEC International Electrotechnical Commission 741IEEE Institute of Electrical and Electronics Engineers 742IESG Internet Engineering Steering Group 743IETF Internet Engineering Task Force 744IF intermediate frequency 745IFCM isochronous flow control mode 746IFF Interchange File Format 747IFS internal field separator 748IGD Internet gateway device 749IGMP Internet Group Management Protocol 750IGP interior gateway protocol 751IHV independent hardware vendor 752IKE Internet key exchange 753ILM internal loopback mode 754ILOM integrated lights-out management 755ILP instruction level parallelism 756IM instant messaging 757IME input method editor 758IMAP Internet Message Access Protocol 759IMC integrated memory controller 760IMCR interrupt mode configuration register 761IMR interrupt mask register 762IMS information management system 763IMSI international mobile subscriber identity 764INCITS InterNational Committee for Information Technology Standards 765INODE index node 766IO input/output 767IOCTL input/output control 768IOM input/output managers 769IOMMU input/output memory management unit 770IOT Internet of Things 771IP Internet Protocol 772IP intellectual property 773IPC instructions per cycle 774IPC interprocess communication 775IPCF interprocess communication facility 776IPE integrated programming environment 777IPI intelligent peripheral interface 778IPI interprocessor interrupt 779IPL Initial Program Load 780IPL Interrupt Priority Level 781IPMB Intelligent Platform Management Bus 782IPMI Intelligent Platform Management Interface 783IPNG Internet Protocol, Next Generation 784IPS in-plane switching 785IPS intrusion prevention system 786IPSEC Internet Protocol Security 787IRC Internet Relay Chat 788IRDA infrared data association 789IRDP ICMP Router Discovery Protocol 790IRQ interrupt request 791IRQL interrupt request level 792IRR interrupt request register 793IRTF Internet Research Task Force 794IS information system 795ISA industry standard architecture 796ISA instruction set architecture 797ISE instant secure erase 798ISDN integrated services digital network 799ISI inter-symbol interference 800ISL initial system load 801ISM industrial, scientific, [and] medical 802ISMS information system management system 803ISN initial serial number 804ISO International Standards Organization 805ISOC Internet Society 806ISP Internet service provider 807ISR in-service register 808ISR interrupt service routine 809IST internal spanning tree 810IST interrupt stack table 811ISV independent software vendor 812IT information technology 813ITB Intel Turbo Boost 814ITIL information technology infrastructure library 815ITP in-target probe 816ITSM IT service management 817IV initialization vector 818IVT interrupt vector table 819JBOD just a bunch of disks 820JCL Job Control Language 821JFET junction [gate] field-effect transistor 822JIT just in time 823JPEG Joint Photographic Experts Group 824JRE Java Runtime Environment 825JSON JavaScript Object Notation 826JTAG joint test action group 827KASLR kernel address space layout randomization 828KB keyboard 829KB kilobyte 830KBD keyboard 831KBD kilobaud 832KCS keyboard controller style 833KLOC thousand lines of code 834KMS kernel-mode setting 835KPI kernel programming interface 836KVA kernel virtual address 837KVM kernel virtual machine 838KVM kernel virtual memory 839KVM keyboard, video, [and] mouse 840L2CAP link layer control and adaptation protocol 841LAG link aggregation group 842LAMP Linux Apache MySQL {Perl,PHP,Python} 843LAN local area network 844LAPIC local advanced programmable interrupt controller 845LAR load access rights 846LBA logical block addressing 847LBNF labeled backus-naur form 848LBS location-based service 849LCD liquid crystal display 850LCP link control protocol 851LDA local delivery agent 852LDAP Lightweight Directory Access Protocol 853LDR light-dependent resistor 854LDT local descriptor table 855LE logical extent 856LED light emitting diode 857LELL low energy link layer 858LER label edge router 859LF line feed 860LF low frequency 861LFM lowest frequency mode 862LFN long file names 863LFO low-frequency oscillation 864LFS log-structured file system 865LFU least frequently used 866LHP loop heat pipe 867LIF logical interchange format 868LIFO last in, first out 869LILO LInux LOader 870LILO last in, last out 871LINT local interrupt 872LIR local Internet registry 873LISP LISt Processor 874LISP Locator/ID Separation Protocol 875LKM {Linux,loadable} kernel module 876LKML Linux kernel mailing list 877LL load linked 878LL/SC load linked/store conditional 879LLC logical link control 880LLD low-level design 881LLDD low-level design document 882LLDP link layer discovery protocol 883LLF low level format 884LLMNR link-local multicast name resolution 885LLVM Low Level Virtual Machine 886LM long mode 887LMCE local machine check exception 888LMI local management interface 889LMM link management mode 890LMP link management protocol 891LNO loop nest optimization 892LOC lines of code 893LOM lights-out management 894LPE Linux performance events 895LPC low pin count 896LPS local positioning system 897LRC longitudinal redundancy check 898LRM left-to-right mark 899LRO left-to-right override 900LRU least recently used 901LS link state 902LSAN Leak Sanitizer 903LSB Linux standards base 904LSB least significant {bit,byte} 905LSI large scale integration 906LSL load segment limit 907LSM log structured merge 908LSN Large Scale NAT 909LSN log sequence number 910LSO large send offload 911LSR label switch router 912LTCC low temperature co-fired ceramic 913LTO linear tape-open 914LTO link time optimization 915LTR left to right 916LTR load task register 917LTR letter(-sized paper) 918LTS long term support 919LUA Lua Uppercase Accident 920LUN logical unit number 921LV logical volume 922LVM logical volume management 923LVT local vector table 924LVDS Low-Voltage Differential Signaling 925LWP light-weight process 926LZSS Lempel Ziv Storer Szymanski 927LZW Lempel Ziv Welch 928MAB MAC authentication bypass 929MAC mandatory access control 930MAC {media,medium} access control 931MAC message authentication {check,code} 932MADT multiple APIC descriptor table 933MAMR microwave-assisted magnetic recording 934MB megabyte 935MBA multi-boot agent 936MBR master boot record 937MBS megabits per second 938MC memory controller 939MCA machine check architecture 940MCA MicroChannel architecture 941MCC multiversion concurrency control 942MCE machine check exception 943MCGA Multi-Color Graphics Array 944MCH memory controller hub 945MCLAG multi-chassis link aggregation group 946MCM multi-chip module 947MCQ memory controlled queue 948MD machine-dependent 949MD MiniDisc 950MD-SAL model-driven service abstraction layer 951MDA mail delivery agent 952MDA Monochrome Display Adapter 953MDC Management Data Clock 954MDI Medium Dependent Interface 955MDI-X Medium Dependent Interface Crossover 956MDIO Management Data Input/Output 957MDMX MIPS Digital Media eXtension 958MDRAM multibank dynamic random access memory 959MESI modified, exclusive, shared, invalid 960MFC merge from current 961MFC Microsoft Foundation Classes 962MFM modified frequency modulation 963MFU most frequently used 964MGCP media gateway control protocol 965MHU message handling unit 966MI machine-independent 967MI machine interface 968MIB management information base 969MIC message integrity {check,code} 970MID mobile Internet device 971MIDI musical instrument digital interface 972MIF management information format 973MII media independent interface 974MIM man in the middle 975MIMD multiple instruction, multiple data 976MIME Multipurpose Internet Mail Extensions 977MIMO multiple input multiple output 978MIPS million instructions per second 979MIPS Microprocessor without Interlocked Pipeline Stages 980MISD multiple instruction, single data 981MIT Massachusetts Institute of Technology 982MITM man in the middle 983ML machine language 984ML machine learning 985ML mailing list 986ML markup language 987ML maximum likelihood 988MLAG multi-chassis link aggregation group 989MLC multi-level cell 990MLD multicast listener discovery 991MLHP micro loop heat pipe 992MMF multi-mode fiber 993MMIC monolithic microwave integrated circuit 994MMIO memory mapped input/output 995MMORPG massive multiplayer online role playing game 996MMRP multiple MAC registration protocol 997MMU memory management unit 998MMX matrix math extension 999MMX multimedia extension 1000MMX multiple math extension 1001MO magneto-optical 1002MOESI modified, owned, exclusive, shared, invalid 1003MOF maximum operating frequency 1004MOSFET metal-oxide-semiconductor field-effect transistor 1005MOSI modified, owned, shared, invalid 1006MP multi-platform 1007MP multiplayer 1008MP {multiprocessing,multiprocessor} 1009MPEG moving picture experts group 1010MPI message passing interface 1011MPLS Multiprotocol Label Switching 1012MPP massively parallel processor 1013MPS memory pool system 1014MPS multiprocessor specification 1015MQTT Message Queuing Telemetry Transport 1016MR modem ready 1017MRO method resolution order 1018MRP multiple registration protocol 1019MRU most recently used 1020MS Microsoft 1021MSAN Memory Sanitizer 1022MSB most significant {bit,byte} 1023MSC message sequence chart 1024MSE mean square error 1025MSF minutes seconds frames 1026MSI message signaled interrupt 1027MSI modified, shared, invalid 1028MSR {machine state,model-specific} register 1029MSS maximum segment size 1030MSTP Multiple Spanning Tree Protocol 1031MT machine translation 1032MTA mail transfer agent 1033MTBF mean time between failures 1034MTP media transfer protocol 1035MTRR memory type range register 1036MTTF mean time to failure 1037MTU maximum transmission unit 1038MUA mail user agent 1039MUD multi-user domain 1040MVCC multiversion concurrency control 1041MVR multicast VLAN registration 1042MVRP multiple VLAN registration protocol 1043MWE module width encoding 1044MX mail exchange 1045NACK negative acknowledgement 1046NAK negative acknowledgement 1047NAN neighbor awareness networking 1048NAN not a number 1049NAPT Network Address Port Translation 1050NAS network attached storage 1051NAT network address translation 1052NAV network allocation vector 1053NC numerical control 1054NC-SI network controller sideband interface 1055NCO numerically-controlled oscillator 1056NCP Network Control Protocol 1057NCSI network connectivity status indicator 1058NCQ native command queuing 1059ND neighbor discovery 1060NDFA nondeterministic finite automaton 1061NDIS network driver interface specification 1062NE numeric error 1063NEWS Network extensible Window System 1064NFA nondeterministic finite automaton 1065NFC near-field communication 1066NFCI no functional change intended 1067NFS network file system 1068NFV network function virtualization 1069NIA next instruction address 1070NIC network information center 1071NIC network interface card 1072NIDS network intrusion detection system 1073NIP network interface protocol 1074NIPS network intrusion prevention system 1075NIS network information service 1076NIST National Institute of Standards and Technology 1077NLS native language support 1078NMI non-maskable interrupt 1079NNTP Network News Transfer Protocol 1080NMR nonce-misuse resistance 1081NOC network operations center 1082NOP no operation 1083NOS network operating system 1084NP nondeterministic polynomial time 1085NRND not recommended for new designs 1086NRZ non-return to zero 1087NSA nation-state adversary 1088NSA no such agency 1089NSA National Security Agency 1090NTM non-deterministic Turing machine 1091NTP Network Time Protocol 1092NUMA non-uniform memory access 1093NURBS non-uniform rational basis spline 1094NVMM NetBSD Virtual Machine Monitor 1095NVMM non-volatile main memory 1096NVRAM non-volatile random access memory 1097NW not write-through 1098NX no execute 1099OAEP optimal asymmetric encryption padding 1100OAM operations, administration, and {management,maintenance} 1101OBO off by one 1102OBOE off by one error 1103OCL object constraint language 1104OCR optical character recognition 1105ODE offline device environment 1106ODI open data-link interface 1107ODM object data manager 1108ODCM on-demand clock modulation 1109ODMR on-demand mail relay 1110ODT on-die termination 1111OEM original equipment manufacturer 1112OFB output feedback 1113OFDM orthogonal frequency division multiplexing 1114OFET organic field-effect transistor 1115OLAP online analytical processing 1116OLE object linking and embedding 1117OLTP online transaction processing 1118ONFI open nand flash interface 1119OO OpenOffice 1120OO object oriented 1121OOB out of band 1122OOE out of order execution 1123OOM out of memory 1124OOO OpenOffice.org 1125OOP object oriented programming 1126OOPS object oriented programming systems 1127OOSE object oriented software engineering 1128OPM operations per minute 1129OPS operations per second 1130OQL Object Query Language 1131ORB object request broker 1132ORM object-relational mapping 1133OS operating system 1134OSD object-based storage device 1135OSD open source definition 1136OSF open software foundation 1137OSI Open Source Initiative 1138OSI open systems interconnection 1139OSPF open shortest path first 1140OSPM OS power management 1141OSS open sound system 1142OSS open source software 1143OSVW operating system visible workarounds 1144OTP one time password 1145OTP open telecom platform 1146OU organizational unit 1147OUI organizationally unique identifier 1148OWASP Open Web Application Security Project 1149OWL Web Ontology Language 1150P2P PCI to PCI 1151P2P peer to peer 1152PA phase accumulator 1153PA physical address 1154PAAS platform as a service 1155PAC phase-amplitude converter 1156PAE physical address extension 1157PAGP port aggregation protocol 1158PAL phase alternating line 1159PAL programmable array logic 1160PAM pluggable authentication modules 1161PAM pulse amplitude modulation 1162PAP password authentication protocol 1163PAT page attribute table 1164PAT port address translation 1165PATA parallel ATA 1166PAX portable archive exchange 1167PBE pending break encoding 1168PBE programming by example 1169PBR partition boot record 1170PBX private branch exchange 1171PC personal computer 1172PC program counter 1173PCB printed circuit board 1174PCB process control block 1175PCB Protocol Control Block 1176PCBC propagating cipher block chaining 1177PCC Portable C Compiler 1178PCD page-level cache disable 1179PCE path computation element 1180PCE performance-monitor counter enable 1181PCEP Path Computation Element Protocol 1182PCH platform controller hub 1183PCI peripheral component interconnect 1184PCM phase change memory 1185PCM pulse code modulation 1186PCMCIA Personal Computer Memory Card International Association 1187PCP Port Control Protocol 1188PD public domain 1189PDA personal digital assistant 1190PDA pushdown automaton 1191PDAG propositional directed acyclic graph 1192PDB power distribution board 1193PDF portable document format 1194PDM pulse-duration modulation 1195PDN pull-down network 1196PDP page {descriptor,directory} page 1197PDS product data sheet 1198PDU protocol data unit 1199PE protection enable 1200PE provider edge 1201PEAP Protected EAP 1202PECI platform environment control interface 1203PEP protocol extension protocol 1204PER packed encoding rules 1205PFS perfect forward secrecy 1206PGAS partitioned global address space 1207PGE page global enable 1208PGP Pretty Good Privacy 1209PHB PCI host bridge 1210PHP PHP: Hypertext Preprocessor 1211PIC performance instrumentation counters 1212PIC position independent code 1213PIC programmable interrupt controller 1214PICNIC problem in chair, not in computer 1215PID process id 1216PIE position independent executable 1217PIL Priority Interrupt Level 1218PIM personal information manager 1219PIM platform-independent model 1220PIO programmed input/output 1221PIPT physically indexed, physically tagged 1222PIQ prefetch input queue 1223PIT programmable interrupt timer 1224PIV personal identity verification 1225PIX Private Internet eXchange 1226PKCS public-key cryptography standards 1227PKI public key infrastructure 1228PLC programmable logic controller 1229PLD programmable logic device 1230PLL phase locked loop 1231PLRU pseudo LRU 1232PLT procedure linkage table 1233PLTM package level thermal management 1234PM power management 1235PM {phase,pulse} modulation 1236PMC performance monitoring counters 1237PME power management event 1238PMEG page map entry group 1239PMI performance monitoring infrastructure 1240PMI platform management interrupt 1241PMIC power management integrated circuit 1242PMIO port-mapped input/output 1243PMT photo-multiplier tube 1244PMU performance monitoring units 1245PMU power management unit 1246PNG portable network graphics 1247PNP plug and play 1248POE power over ethernet 1249POF probability of failure 1250POP Post Office Protocol 1251POP power on password 1252POR plan of record 1253POSIX Portable Operating System Interface [for Unix] 1254POST power on self test 1255POTS plain old telephone system 1256POWER Performance Optimization With Enhanced RISC 1257POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1258PP pair programming 1259PPB PCI [to] PCI bridge 1260PPC PowerPC 1261PPC Power Performance Computing 1262PPI pixels per inch 1263PPM pages per minute 1264PPP Point-to-Point Protocol 1265PPPOA Point-to-Point Protocol over ATM 1266PPPOE Point-to-Point Protocol over Ethernet 1267PPR processor programming reference 1268PPT powerpoint 1269PPT punched paper tape 1270PPU physics processing unit 1271PRAM Parameter RAM 1272PRBS pseudorandom bit sequence 1273PRG pseudorandom generator 1274PRF pseudorandom function [family] 1275PRML partial response, maximum likelihood 1276PRN pseudorandom {noise,number} 1277PRNG pseudorandom number generator 1278PROM programmable read only memory 1279PRP pseudorandom permutation 1280PRU Programmable Realtime Unit 1281PS PostScript 1282PSD power spectral density 1283PSE page size extensions 1284PSK phase shift keying 1285PSK pre-shared key 1286PSTN public switched telephone network 1287PSW program status word 1288PTE page table entry 1289PTLA pseudo top level aggregator 1290PTP page table page 1291PTV perceived target value 1292PU processing unit 1293PUC personal unblocking code 1294PUN physical unit number 1295PV physical volume 1296PVC permanent virtual circuit 1297PVG physical volume group 1298PVI protected-mode virtual interrupt 1299PVRST Per-VLAN rapid spanning tree 1300PVST Per-VLAN Spanning Tree 1301PWM pulse width modulation 1302PXE preboot execution environment 1303QA quality assurance 1304QAM quadrature amplitude modulation 1305QAM quality assurance management 1306QBE query by example 1307QC quality control 1308QDI quasi delay insensitive 1309QCIF quarter common intermediate format 1310QOI quality of implementation 1311QOI quick order interface 1312QOS quality of service 1313QVL qualified vendor list 1314R/O read only 1315R/W read/write 1316RA receiver address 1317RA remote assistance 1318RA resource affinity 1319RA router advertisement 1320RAD rapid application development 1321RADIUS remote authentication dial-in user service 1322RAID redundant array of {independent,inexpensive} disks 1323RAM random access memory 1324RAS reliability, availability and serviceability 1325RAS remote access service 1326RAS restartable atomic sequence 1327RAS row address strobe 1328RBF radial basis function 1329RBNF routing backus-naur form 1330RBT red-black tree 1331RC release candidate 1332RC remote control 1333RC run commands 1334RCS Revision Control System 1335RCS revision control system 1336RCU read, copy, update 1337RDB Rigid Disk Block 1338RDBMS relational database management system 1339RDF Resource Description Framework 1340RDM relational data model 1341RDMA remote direct memory access 1342RDP remote desktop protocol 1343RDRAM Rambus DRAM 1344RE regular expression 1345REPL read, evaluate, print, loop 1346REST representational state transfer 1347RF radio frequency 1348RFB remote frame buffer 1349RFI radio frequency interference 1350RFO request for ownership 1351RFU reserved for future use 1352RGB red green blue 1353RGBA red green blue alpha 1354RGMII reduced gigabit media independent interface 1355RH read hit 1356RHEL Red Hat Enterprise Linux 1357RHL Red Hat Linux 1358RIB routing information base 1359RIFF Resource Interchange File Format 1360RIP Raster Image Processor 1361RIP Routing Information Protocol 1362RIR regional Internet registry 1363RISC reduced instruction set {computer,computing} 1364RKM ROM Kernel Manual 1365RLE run length encoding 1366RLL run length limited 1367RLO right-to-left override 1368RM read miss 1369RMCP Remote Management Control Protocol 1370RMI remote method invocation 1371RMO Relaxed Memory Ordering 1372RMPM rapid memory power management 1373RMS root mean square 1374RMW read, modify, write 1375RNG random number generator 1376ROM read only memory 1377ROP return-oriented programming 1378RPC remote procedure call 1379RPG Report Program Generator 1380RPKI resource PKI 1381RPL requested privilege level 1382RPM revolutions per minute 1383RPN reverse Polish notation 1384RPVST Rapid Per-VLAN Spanning Tree 1385RR random replacement 1386RR round robin 1387RS relay station 1388RSA Rivest, Shamir, [and] Adleman 1389RSIP Realm Specific IP 1390RSN Robust Secure Network 1391RSS really simple syndication 1392RSS Receive Side Scaling 1393RSS residual sum of squares 1394RSTP Rapid Spanning Tree Protocol 1395RT real time 1396RTC real time clock 1397RTC real time computing 1398RTF rich text format 1399RTL register transfer language 1400RTL resistor-transistor logic 1401RTL right to left 1402RTOS real time operating system 1403RTP Real-time Transport Protocol 1404RTS request to send 1405RTT round trip time 1406RUP rational unified process 1407RW Rabin-Williams 1408RWM read-write memory 1409RX {receive,receiver} 1410S/PDIF Sony/Philips Digital Interface Format 1411SA security advisory 1412SA security association 1413SA source address 1414SA structured analysis 1415SAAS software as a service 1416SABRE Semi-automated business research environment 1417SACD super audio compact disc 1418SAD security association database 1419SAF-TE SCSI accessed fault-tolerant enclosure 1420SAGE Semi-automated ground environment 1421SAL {service,system} abstraction layer 1422SAM serial access memory 1423SAM sum addressed memory 1424SAML security assertion markup language 1425SAN storage area network 1426SAP service access point 1427SAPIC streamlined advanced programmable interrupt controller 1428SASD structured analysis, structured design 1429SASI Shugart Associates System Interface 1430SASL simple authentication [and] security layer 1431SATA serial advanced technology attachment 1432SAX simple API for XML 1433SB sound blaster 1434SBSA server base system architecture 1435SBU standard build unit 1436SC store conditional 1437SCA source code analyzer 1438SCADA supervisory control and data acquisition 1439SCC single chip cloud 1440SCC source code control 1441SCCP skinny call control protocol 1442SCCS Source Code Control System 1443SCI scalable coherent interface 1444SCI system control interrupt 1445SCIM smart common input method 1446SCM software configuration management 1447SCM source code management 1448SCM storage-class memory 1449SCO synchronous connection orientated 1450SCP secure copy 1451SCP system control processor 1452SCPI system control and power interface 1453SCSI Small Computer System Interface 1454SCTP Stream Control Transmission Protocol 1455SDDC software defined data center 1456SDEI software delegated exception interface 1457SDI symbol deinterleave 1458SDK software development kit 1459SDL Simple Declarative Language 1460SDL Simple Direct-media Layer 1461SDLC {software,system,systems} development life cycle 1462SDN software defined networking 1463SDP Session Description Protocol 1464SDR software defined radio 1465SDRAM synchronous dynamic random access memory 1466SDS software defined storage 1467SDT syntax-directed translation 1468SEA synchronous external abort 1469SEGV segmentation violation 1470SED self-encrypting drive 1471SED stream editor 1472SEMB serial ATA enclosure management bridge 1473SEO search engine optimization 1474SES SCSI enclosure services 1475SFC sequential function chart 1476SFI simple firmware interface 1477SFI software fault isolation 1478SFTP SSH File Transfer Protocol 1479SFTP Serial File Transfer Protocol 1480SFTP Simple File Transfer Protocol 1481SGI Silicon Graphics, Inc 1482SGI software generated interrupt 1483SGMII serial gigabit media independent interface 1484SGPIO serial general purpose input/output 1485SGRAM synchronous graphics random access memory 1486SHA secure hash algorithm 1487SICP structure and interpretation of computer programs 1488SIDH supersingular isogeny Diffie-Hellman 1489SIEM security information and event management 1490SIF source input format 1491SIFS short inter-frame space 1492SIM subscriber identity module 1493SIMD single instruction, multiple data 1494SIMM single inline memory module 1495SIP Session Initiation Protocol 1496SIR signal-to-interference ratio 1497SIR slow infrared 1498SISD single instruction, single data 1499SIV synthetic intialization vector 1500SLAAC stateless address auto-configuration 1501SLC single-level cell 1502SLDRAM synchronous-link dynamic random access memory 1503SLED single large expensive disk 1504SLI scalable link interface 1505SLI scan-line interleave 1506SLIC system license internal code 1507SLOC source lines of code 1508SLRU segmented LRU 1509SMA smart memory access 1510SMAF system management action field 1511SMAP Simple Mail Access Protocol 1512SMAP supervisor mode access prevention 1513SMART self-monitoring analysis and reporting technology 1514SMB Server Message Block 1515SMB system management bus 1516SMBIOS System Management BIOS 1517SMC system management controller 1518SMD storage module device 1519SMEP supervisor mode execution protection 1520SMF single mode fiber 1521SMI structure of management information 1522SMI system management interrupt 1523SMM system management mode 1524SMP serial management protocol 1525SMP symmetric multiprocessing 1526SMR shingled magnetic recording 1527SMR state machine replication 1528SMT simultaneous multithreading 1529SMTP Simple Mail Transfer Protocol 1530SMU system management unit 1531SNA systems network architecture 1532SNAP Sub-Network Access Protocol 1533SNIA Storage Networking Industry Association 1534SNMP Simple Network Management Protocol 1535SNR signal-to-noise ratio 1536SOA service oriented architecture 1537SOAP Simple Object Access Protocol 1538SOC system on chip 1539SOF start of frame 1540SOH start of header 1541SOHO small office/home office 1542SOL serial over LAN 1543SOM system on module 1544SP service pack 1545SP stack pointer 1546SPA storage pool allocator 1547SPAN switched port analyzer 1548SPARC scalable processor architecture 1549SPARQL SPARQL Protocol and RDF Query Language 1550SPD security policy database 1551SPD serial presence detect 1552SPDIF Sony/Philips digital interface format 1553SPI serial peripheral interface 1554SPI stateful packet inspection 1555SPL system interrupt priority level 1556SPL spinlock 1557SPMD single process, multiple data 1558SPR special purpose register 1559SPT sectors per track 1560SQA software quality assurance 1561SQCIF sub quarter common intermediate format 1562SQL Structured Query Language 1563SRAM static random access memory 1564SRC sample rate conversion 1565SRP SCSI RDMA protocol 1566SRR shaped round robin 1567SRTP Secure Real-time Transport Protocol 1568SS self-snoop 1569SS stack segment 1570SSA static single assignment 1571SSAP source service access point 1572SSB single-sideband modulation 1573SSC spread spectrum clock 1574SSD solid state drive 1575SSE streaming SIMD extensions 1576SSFDC solid state floppy disc card 1577SSH secure shell 1578SSI server side includes 1579SSID service set identifier 1580SSTP secure socket tunneling protocol 1581SSL secure sockets layer 1582SSP stack smashing protection 1583STC software thermal control 1584STD state transition diagram 1585STM software transactional memory 1586STOMP Streaming Text Oriented Messaging Protocol 1587STP Spanning Tree Protocol 1588STP shielded twisted pair 1589STRG spanning tree root guard 1590SUN Stanford University Network 1591SUS Single Unix Specification 1592SUT system under test 1593SVC switched virtual circuit 1594SVG scalable vector graphics 1595SVGA Super Video Graphics Array 1596SVI {switch,switched} virtual interface 1597SVM secure virtual machine 1598SVM support vector machine 1599SVR System V Release 1600SVS Separate Virtual Space 1601SWF Shockwave Flash 1602SWIG simplified wrapper [and] interface generator 1603SYR symbol timing recovery 1604TA test assertion 1605TA transmitter address 1606TACACS terminal access controller access-control system 1607TAI international atomic time 1608TAO track at once 1609TAOCP The Art of Computer Programming 1610TAP Test Anything Protocol 1611TAS test and set 1612TB terabyte 1613TBNF transitional backus-naur form 1614TCB trace capture buffer 1615TCB trusted computing base 1616TCC thermal control circuit 1617TCL tool command language 1618TCP Transmission Control Protocol 1619TCQ tagged command queueing 1620TDC time [to] digital converter 1621TDD test-driven development 1622TDD time division duplex 1623TDM time division multiplexing 1624TDMA time division multiple access 1625TDOA time difference of arrival 1626TDP thermal design {point,power} 1627TDR time-domain reflectometry 1628TECO Text Editor and Corrector 1629TEE Trusted Execution Environment 1630TFT thin film transistor 1631TFTP Trivial File Transfer Protocol 1632TIAS try it and see 1633TIFF tagged image file format 1634TITS try it to see 1635TK temporal key 1636TKIP Temporal Key Integrity Protocol 1637TLA top level aggregator 1638TLB translation lookaside buffer 1639TLD top level domain 1640TLER time-limited error recovery 1641TLI transport layer interface 1642TLS thread local storage 1643TLS transport layer security 1644TM Turing machine 1645TM thermal monitor 1646TMG transmogrifier 1647TMDS transition minimized differential signaling 1648TMO timeout 1649TOD time of day 1650TOE TCP offload engine 1651TOFU trust on first use 1652TOS terms of service 1653TOS trusted operating system 1654TOS type of service 1655TOTP time-based one time password 1656TP transaction processing 1657TPI tracks per inch 1658TPM transactions per minute 1659TPM trusted platform module 1660TPR task priority register 1661TPS transactions per second 1662TPS transmission parameters signaling 1663TR task register 1664TR token ring 1665TRL timing recovery loop 1666TRNG true random number generator 1667TS terminal services 1668TS time series 1669TS time stamp 1670TS transport stream 1671TSAN Thread Sanitizer 1672TSC time stamp counter 1673TSD time stamp disable 1674TSDB time series database 1675TSL test, set, lock 1676TSO time sharing option 1677TSO TCP segmentation offload 1678TSO Total Store Ordering 1679TSP Time-Stamp Protocol 1680TSP Tunnel Setup Protocol 1681TSP time synchronization protocol 1682TSP traveling salesman problem 1683TSS task state segment 1684TSV tab-separated values 1685TTL time to live 1686TTL transistor-transistor logic 1687TTM translation table maps 1688TTY teletype 1689TUI {terminal,text-based,textual} user interface 1690TX {transmit out,transmitter} 1691TXG transaction group 1692TZ time zone 1693UAC user {access,account} control 1694UAF use-after-free 1695UART universal asynchronous receiver/transmitter 1696UAT user acceptance testing 1697UB undefined behavior 1698UBSAN Undefined Behavior Sanitizer 1699UC uncacheable 1700UCS uniform-cost search 1701UCS unified computing system 1702UCS universal coded character set 1703UDI uniform driver interface 1704UDMA ultra DMA 1705UDO ultra density optical 1706UDP User Datagram Protocol 1707UEFI unified extensible firmware interface 1708UFO UDP fragmentation offload 1709UFS Unix File System 1710UGA universal graphics adapter 1711UI unit interval 1712UI user interface 1713UICC universal integrated circuit card 1714UID unique identifier 1715UID user identifier 1716UL upload 1717UMA uniform memory access 1718UMA upper memory area 1719UMB upper memory block 1720UML unified modeling language 1721UMPC ultra-mobile PC 1722UPNP universal plug and play 1723UPS uninterruptible power supply 1724URI uniform resource identifier 1725URL uniform resource locator 1726URN uniform resource name 1727USART universal synchronous/asynchronous receiver/transmitter 1728USB universal serial bus 1729USWC uncacheable speculative write combining 1730UT unit test 1731UTC coordinated universal time 1732UTF unicode transformation formats 1733UTP unshielded twisted pair 1734UTS UNIX time-sharing 1735UUCP Unix-to-Unix Copy Protocol 1736UUID universally unique identifier 1737UUOC useless use of cat 1738UUT unit under test 1739UX user experience 1740VA vertical alignment 1741VA virtual address 1742VA volt-ampere 1743VAX virtual address extension 1744VB Visual Basic 1745VBR volume boot record 1746VCA variable-gain amplifier 1747VCC common collector voltage 1748VCCP virtual chassis control protocol 1749VCF voltage-controlled filter 1750VCM virtual channel memory 1751VCO voltage-controlled oscillator 1752VCP virtual chassis port 1753VCS version control system 1754VDPAU Video Decode and Presentation API for Unix 1755VES virtual execution system 1756VESA Video Electronics Standards Association 1757VFO variable-frequency oscillator 1758VFS virtual file system 1759VG volume group 1760VGA Video Graphics Array 1761VHDCI very high density cable interconnect 1762VID {VLAN,voltage level} identifier 1763VIM Vi IMproved 1764VIPT virtually indexed, physically tagged 1765VIVT virtually indexed, virtually tagged 1766VLAN virtual local area network 1767VLD variable-length decoding 1768VLIW very long instruction word 1769VLSI very large scale integration 1770VLSM variable length subnet mask 1771VM virtual {machine,memory} 1772VME virtual mode extension 1773VMX vector multimedia extensions 1774VMX virtual machine extensions 1775VNC virtual network computing 1776VOD video on demand 1777VPD vital product data 1778VPN virtual private network 1779VPWS virtual private wire service 1780VR virtual reality 1781VRAM video random access memory 1782VRF virtual routing and forwarding 1783VRM voltage regulator module 1784VROC Virtual RAID On CPU 1785VRRP Virtual Router Redundancy Protocol 1786VSTP VLAN Spanning Tree Protocol 1787VTP VLAN Trunking Protocol 1788VXFS Veritas file system 1789VXVM Veritas volume manager 1790W watt 1791W3C World Wide Web Consortium 1792WAFL write anywhere file layout 1793WAMP Web Application Messaging Protocol 1794WAN wide area network 1795WAP Wireless Application Protocol 1796WAP wireless access point 1797WDM Windows Driver Model 1798WDDM Windows Display Driver Model 1799WDT watchdog timer 1800WEP Wired Equivalent Privacy 1801WFI wait for interrupt 1802WFQ weighted fair queuing 1803WH write hit 1804WHEA Windows hardware error architecture 1805WIFI wireless fidelity 1806WLAN wireless local area network 1807WM write miss 1808WMF Windows meta file 1809WMI Windows Management Instrumentation 1810WOL Wake-on-LAN 1811WOM Wake-on-Modem 1812WOR Wake-on-Ring 1813WORM write once read many 1814WP WordPerfect 1815WP word processor 1816WP write protect 1817WPA Wi-Fi Protected Access 1818WPA2 Wi-Fi Protected Access II 1819WPAD web proxy auto-discovery protocol 1820WPS Wi-Fi Protected Setup 1821WRAM window random access memory 1822WS web services 1823WTC write through caching 1824WTD weighted tail drop 1825WWAN wireless wide area network 1826WWW world wide web 1827WYSIAYG what you see is all you get 1828WYSIWYG what you see is what you get 1829XBAR crossbar 1830XDMCP X Display Manager control protocol 1831XER XML encoding rules 1832XGA Extended Graphics Array 1833XHR XMLHttpRequest 1834XIP execute in place 1835XML Extensible Markup Language 1836XNA XNA's not acronymed 1837XNS Xerox network systems 1838XOR exclusive or 1839XP extreme programming 1840XSI X/Open System Interface 1841XSL extensible stylesheet language 1842XSLT extensible stylesheet language transformations 1843XSS cross site scripting 1844XT extended technology 1845XTACACS extended terminal access controller access-control system 1846XTI X/Open transport interface 1847XUL XML user interface language 1848YACC yet another compiler compiler 1849YAML YAML ain't markup language 1850YANG yet another next generation 1851YAWPFAPR you are welcome; please file a problem report 1852YP Yellow Pages 1853YTD year to date 1854ZAP ZFS attribute processor 1855ZBR zone bit recording 1856ZFOD zero-filled on demand 1857ZFS zettabyte file system 1858ZIF zero insertion force 1859ZIFS zero insertion force socket 1860ZIL ZFS intent log 1861ZMA zone multicast address 1862ZOI zero one infinity 1863ZOI zone of influence 1864ZPL ZFS Posix layer 1865ZVOL ZFS Volume 1866