acronyms.comp revision 1.332
1$NetBSD: acronyms.comp,v 1.332 2023/02/27 21:04:43 fcambus 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 1208PGO profile guided optimization 1209PGP Pretty Good Privacy 1210PHB PCI host bridge 1211PHP PHP: Hypertext Preprocessor 1212PIC performance instrumentation counters 1213PIC position independent code 1214PIC programmable interrupt controller 1215PICNIC problem in chair, not in computer 1216PID process id 1217PIE position independent executable 1218PIL Priority Interrupt Level 1219PIM personal information manager 1220PIM platform-independent model 1221PIO programmed input/output 1222PIPT physically indexed, physically tagged 1223PIQ prefetch input queue 1224PIT programmable interrupt timer 1225PIV personal identity verification 1226PIX Private Internet eXchange 1227PKCS public-key cryptography standards 1228PKI public key infrastructure 1229PLC programmable logic controller 1230PLD programmable logic device 1231PLL phase locked loop 1232PLRU pseudo LRU 1233PLT procedure linkage table 1234PLTM package level thermal management 1235PM power management 1236PM {phase,pulse} modulation 1237PMC performance monitoring counters 1238PME power management event 1239PMEG page map entry group 1240PMI performance monitoring infrastructure 1241PMI platform management interrupt 1242PMIC power management integrated circuit 1243PMIO port-mapped input/output 1244PMT photo-multiplier tube 1245PMU performance monitoring units 1246PMU power management unit 1247PNG portable network graphics 1248PNP plug and play 1249POE power over ethernet 1250POF probability of failure 1251POP Post Office Protocol 1252POP power on password 1253POR plan of record 1254POSIX Portable Operating System Interface [for Unix] 1255POST power on self test 1256POTS plain old telephone system 1257POWER Performance Optimization With Enhanced RISC 1258POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1259PP pair programming 1260PPB PCI [to] PCI bridge 1261PPC PowerPC 1262PPC Power Performance Computing 1263PPI pixels per inch 1264PPM pages per minute 1265PPP Point-to-Point Protocol 1266PPPOA Point-to-Point Protocol over ATM 1267PPPOE Point-to-Point Protocol over Ethernet 1268PPR processor programming reference 1269PPT powerpoint 1270PPT punched paper tape 1271PPU physics processing unit 1272PRAM Parameter RAM 1273PRBS pseudorandom bit sequence 1274PRG pseudorandom generator 1275PRF pseudorandom function [family] 1276PRML partial response, maximum likelihood 1277PRN pseudorandom {noise,number} 1278PRNG pseudorandom number generator 1279PROM programmable read only memory 1280PRP pseudorandom permutation 1281PRU Programmable Realtime Unit 1282PS PostScript 1283PSD power spectral density 1284PSE page size extensions 1285PSK phase shift keying 1286PSK pre-shared key 1287PSTN public switched telephone network 1288PSW program status word 1289PTE page table entry 1290PTLA pseudo top level aggregator 1291PTP page table page 1292PTV perceived target value 1293PU processing unit 1294PUC personal unblocking code 1295PUN physical unit number 1296PV physical volume 1297PVC permanent virtual circuit 1298PVG physical volume group 1299PVI protected-mode virtual interrupt 1300PVRST Per-VLAN rapid spanning tree 1301PVST Per-VLAN Spanning Tree 1302PWM pulse width modulation 1303PXE preboot execution environment 1304QA quality assurance 1305QAM quadrature amplitude modulation 1306QAM quality assurance management 1307QBE query by example 1308QC quality control 1309QDI quasi delay insensitive 1310QCIF quarter common intermediate format 1311QOI quality of implementation 1312QOI quick order interface 1313QOS quality of service 1314QVL qualified vendor list 1315R/O read only 1316R/W read/write 1317RA receiver address 1318RA remote assistance 1319RA resource affinity 1320RA router advertisement 1321RAD rapid application development 1322RADIUS remote authentication dial-in user service 1323RAID redundant array of {independent,inexpensive} disks 1324RAM random access memory 1325RAS reliability, availability and serviceability 1326RAS remote access service 1327RAS restartable atomic sequence 1328RAS row address strobe 1329RBF radial basis function 1330RBNF routing backus-naur form 1331RBT red-black tree 1332RC release candidate 1333RC remote control 1334RC run commands 1335RCS Revision Control System 1336RCS revision control system 1337RCU read, copy, update 1338RDB Rigid Disk Block 1339RDBMS relational database management system 1340RDF Resource Description Framework 1341RDM relational data model 1342RDMA remote direct memory access 1343RDP remote desktop protocol 1344RDRAM Rambus DRAM 1345RE regular expression 1346REPL read, evaluate, print, loop 1347REST representational state transfer 1348RF radio frequency 1349RFB remote frame buffer 1350RFI radio frequency interference 1351RFO request for ownership 1352RFU reserved for future use 1353RGB red green blue 1354RGBA red green blue alpha 1355RGMII reduced gigabit media independent interface 1356RH read hit 1357RHEL Red Hat Enterprise Linux 1358RHL Red Hat Linux 1359RIB routing information base 1360RIFF Resource Interchange File Format 1361RIP Raster Image Processor 1362RIP Routing Information Protocol 1363RIR regional Internet registry 1364RISC reduced instruction set {computer,computing} 1365RKM ROM Kernel Manual 1366RLE run length encoding 1367RLL run length limited 1368RLO right-to-left override 1369RM read miss 1370RMCP Remote Management Control Protocol 1371RMI remote method invocation 1372RMO Relaxed Memory Ordering 1373RMPM rapid memory power management 1374RMS root mean square 1375RMW read, modify, write 1376RNG random number generator 1377ROM read only memory 1378ROP return-oriented programming 1379RPC remote procedure call 1380RPG Report Program Generator 1381RPKI resource PKI 1382RPL requested privilege level 1383RPM revolutions per minute 1384RPN reverse Polish notation 1385RPVST Rapid Per-VLAN Spanning Tree 1386RR random replacement 1387RR round robin 1388RS relay station 1389RSA Rivest, Shamir, [and] Adleman 1390RSIP Realm Specific IP 1391RSN Robust Secure Network 1392RSS really simple syndication 1393RSS Receive Side Scaling 1394RSS residual sum of squares 1395RSTP Rapid Spanning Tree Protocol 1396RT real time 1397RTC real time clock 1398RTC real time computing 1399RTF rich text format 1400RTL register transfer language 1401RTL resistor-transistor logic 1402RTL right to left 1403RTOS real time operating system 1404RTP Real-time Transport Protocol 1405RTS request to send 1406RTT round trip time 1407RUP rational unified process 1408RW Rabin-Williams 1409RWM read-write memory 1410RX {receive,receiver} 1411S/PDIF Sony/Philips Digital Interface Format 1412SA security advisory 1413SA security association 1414SA source address 1415SA structured analysis 1416SAAS software as a service 1417SABRE Semi-automated business research environment 1418SACD super audio compact disc 1419SAD security association database 1420SAF-TE SCSI accessed fault-tolerant enclosure 1421SAGE Semi-automated ground environment 1422SAL {service,system} abstraction layer 1423SAM serial access memory 1424SAM sum addressed memory 1425SAML security assertion markup language 1426SAN storage area network 1427SAP service access point 1428SAPIC streamlined advanced programmable interrupt controller 1429SASD structured analysis, structured design 1430SASI Shugart Associates System Interface 1431SASL simple authentication [and] security layer 1432SATA serial advanced technology attachment 1433SAX simple API for XML 1434SB sound blaster 1435SBSA server base system architecture 1436SBU standard build unit 1437SC store conditional 1438SCA source code analyzer 1439SCADA supervisory control and data acquisition 1440SCC single chip cloud 1441SCC source code control 1442SCCP skinny call control protocol 1443SCCS Source Code Control System 1444SCI scalable coherent interface 1445SCI system control interrupt 1446SCIM smart common input method 1447SCM software configuration management 1448SCM source code management 1449SCM storage-class memory 1450SCO synchronous connection orientated 1451SCP secure copy 1452SCP system control processor 1453SCPI system control and power interface 1454SCSI Small Computer System Interface 1455SCTP Stream Control Transmission Protocol 1456SDDC software defined data center 1457SDEI software delegated exception interface 1458SDI symbol deinterleave 1459SDK software development kit 1460SDL Simple Declarative Language 1461SDL Simple Direct-media Layer 1462SDLC {software,system,systems} development life cycle 1463SDN software defined networking 1464SDP Session Description Protocol 1465SDR software defined radio 1466SDRAM synchronous dynamic random access memory 1467SDS software defined storage 1468SDT syntax-directed translation 1469SEA synchronous external abort 1470SEGV segmentation violation 1471SED self-encrypting drive 1472SED stream editor 1473SEMB serial ATA enclosure management bridge 1474SEO search engine optimization 1475SES SCSI enclosure services 1476SFC sequential function chart 1477SFI simple firmware interface 1478SFI software fault isolation 1479SFTP SSH File Transfer Protocol 1480SFTP Serial File Transfer Protocol 1481SFTP Simple File Transfer Protocol 1482SGI Silicon Graphics, Inc 1483SGI software generated interrupt 1484SGMII serial gigabit media independent interface 1485SGPIO serial general purpose input/output 1486SGRAM synchronous graphics random access memory 1487SHA secure hash algorithm 1488SICP structure and interpretation of computer programs 1489SIDH supersingular isogeny Diffie-Hellman 1490SIEM security information and event management 1491SIF source input format 1492SIFS short inter-frame space 1493SIM subscriber identity module 1494SIMD single instruction, multiple data 1495SIMM single inline memory module 1496SIP Session Initiation Protocol 1497SIR signal-to-interference ratio 1498SIR slow infrared 1499SISD single instruction, single data 1500SIV synthetic intialization vector 1501SLAAC stateless address auto-configuration 1502SLC single-level cell 1503SLDRAM synchronous-link dynamic random access memory 1504SLED single large expensive disk 1505SLI scalable link interface 1506SLI scan-line interleave 1507SLIC system license internal code 1508SLOC source lines of code 1509SLRU segmented LRU 1510SMA smart memory access 1511SMAF system management action field 1512SMAP Simple Mail Access Protocol 1513SMAP supervisor mode access prevention 1514SMART self-monitoring analysis and reporting technology 1515SMB Server Message Block 1516SMB system management bus 1517SMBIOS System Management BIOS 1518SMC system management controller 1519SMD storage module device 1520SMEP supervisor mode execution protection 1521SMF single mode fiber 1522SMI structure of management information 1523SMI system management interrupt 1524SMM system management mode 1525SMP serial management protocol 1526SMP symmetric multiprocessing 1527SMR shingled magnetic recording 1528SMR state machine replication 1529SMT simultaneous multithreading 1530SMTP Simple Mail Transfer Protocol 1531SMU system management unit 1532SNA systems network architecture 1533SNAP Sub-Network Access Protocol 1534SNIA Storage Networking Industry Association 1535SNMP Simple Network Management Protocol 1536SNR signal-to-noise ratio 1537SOA service oriented architecture 1538SOAP Simple Object Access Protocol 1539SOC system on chip 1540SOF start of frame 1541SOH start of header 1542SOHO small office/home office 1543SOL serial over LAN 1544SOM system on module 1545SP service pack 1546SP stack pointer 1547SPA storage pool allocator 1548SPAN switched port analyzer 1549SPARC scalable processor architecture 1550SPARQL SPARQL Protocol and RDF Query Language 1551SPD security policy database 1552SPD serial presence detect 1553SPDIF Sony/Philips digital interface format 1554SPI serial peripheral interface 1555SPI stateful packet inspection 1556SPL system interrupt priority level 1557SPL spinlock 1558SPMD single process, multiple data 1559SPR special purpose register 1560SPT sectors per track 1561SQA software quality assurance 1562SQCIF sub quarter common intermediate format 1563SQL Structured Query Language 1564SRAM static random access memory 1565SRC sample rate conversion 1566SRP SCSI RDMA protocol 1567SRR shaped round robin 1568SRTP Secure Real-time Transport Protocol 1569SS self-snoop 1570SS stack segment 1571SSA static single assignment 1572SSAP source service access point 1573SSB single-sideband modulation 1574SSC spread spectrum clock 1575SSD solid state drive 1576SSE streaming SIMD extensions 1577SSFDC solid state floppy disc card 1578SSH secure shell 1579SSI server side includes 1580SSID service set identifier 1581SSTP secure socket tunneling protocol 1582SSL secure sockets layer 1583SSP stack smashing protection 1584STC software thermal control 1585STD state transition diagram 1586STM software transactional memory 1587STOMP Streaming Text Oriented Messaging Protocol 1588STP Spanning Tree Protocol 1589STP shielded twisted pair 1590STRG spanning tree root guard 1591SUN Stanford University Network 1592SUS Single Unix Specification 1593SUT system under test 1594SVC switched virtual circuit 1595SVG scalable vector graphics 1596SVGA Super Video Graphics Array 1597SVI {switch,switched} virtual interface 1598SVM secure virtual machine 1599SVM support vector machine 1600SVR System V Release 1601SVS Separate Virtual Space 1602SWF Shockwave Flash 1603SWIG simplified wrapper [and] interface generator 1604SYR symbol timing recovery 1605TA test assertion 1606TA transmitter address 1607TACACS terminal access controller access-control system 1608TAI international atomic time 1609TAO track at once 1610TAOCP The Art of Computer Programming 1611TAP Test Anything Protocol 1612TAS test and set 1613TB terabyte 1614TBNF transitional backus-naur form 1615TCB trace capture buffer 1616TCB trusted computing base 1617TCC thermal control circuit 1618TCL tool command language 1619TCP Transmission Control Protocol 1620TCQ tagged command queueing 1621TDC time [to] digital converter 1622TDD test-driven development 1623TDD time division duplex 1624TDM time division multiplexing 1625TDMA time division multiple access 1626TDOA time difference of arrival 1627TDP thermal design {point,power} 1628TDR time-domain reflectometry 1629TECO Text Editor and Corrector 1630TEE Trusted Execution Environment 1631TFT thin film transistor 1632TFTP Trivial File Transfer Protocol 1633TIAS try it and see 1634TIFF tagged image file format 1635TITS try it to see 1636TK temporal key 1637TKIP Temporal Key Integrity Protocol 1638TLA top level aggregator 1639TLB translation lookaside buffer 1640TLD top level domain 1641TLER time-limited error recovery 1642TLI transport layer interface 1643TLS thread local storage 1644TLS transport layer security 1645TM Turing machine 1646TM thermal monitor 1647TMG transmogrifier 1648TMDS transition minimized differential signaling 1649TMO timeout 1650TOD time of day 1651TOE TCP offload engine 1652TOFU trust on first use 1653TOS terms of service 1654TOS trusted operating system 1655TOS type of service 1656TOTP time-based one time password 1657TP transaction processing 1658TPI tracks per inch 1659TPM transactions per minute 1660TPM trusted platform module 1661TPR task priority register 1662TPS transactions per second 1663TPS transmission parameters signaling 1664TR task register 1665TR token ring 1666TRL timing recovery loop 1667TRNG true random number generator 1668TS terminal services 1669TS time series 1670TS time stamp 1671TS transport stream 1672TSAN Thread Sanitizer 1673TSC time stamp counter 1674TSD time stamp disable 1675TSDB time series database 1676TSL test, set, lock 1677TSO time sharing option 1678TSO TCP segmentation offload 1679TSO Total Store Ordering 1680TSP Time-Stamp Protocol 1681TSP Tunnel Setup Protocol 1682TSP time synchronization protocol 1683TSP traveling salesman problem 1684TSS task state segment 1685TSV tab-separated values 1686TTL time to live 1687TTL transistor-transistor logic 1688TTM translation table maps 1689TTY teletype 1690TUI {terminal,text-based,textual} user interface 1691TX {transmit out,transmitter} 1692TXG transaction group 1693TZ time zone 1694UAC user {access,account} control 1695UAF use-after-free 1696UART universal asynchronous receiver/transmitter 1697UAT user acceptance testing 1698UB undefined behavior 1699UBSAN Undefined Behavior Sanitizer 1700UC uncacheable 1701UCS uniform-cost search 1702UCS unified computing system 1703UCS universal coded character set 1704UDI uniform driver interface 1705UDMA ultra DMA 1706UDO ultra density optical 1707UDP User Datagram Protocol 1708UEFI unified extensible firmware interface 1709UFO UDP fragmentation offload 1710UFS Unix File System 1711UGA universal graphics adapter 1712UI unit interval 1713UI user interface 1714UICC universal integrated circuit card 1715UID unique identifier 1716UID user identifier 1717UL upload 1718UMA uniform memory access 1719UMA upper memory area 1720UMB upper memory block 1721UML unified modeling language 1722UMPC ultra-mobile PC 1723UPNP universal plug and play 1724UPS uninterruptible power supply 1725URI uniform resource identifier 1726URL uniform resource locator 1727URN uniform resource name 1728USART universal synchronous/asynchronous receiver/transmitter 1729USB universal serial bus 1730USWC uncacheable speculative write combining 1731UT unit test 1732UTC coordinated universal time 1733UTF unicode transformation formats 1734UTP unshielded twisted pair 1735UTS UNIX time-sharing 1736UUCP Unix-to-Unix Copy Protocol 1737UUID universally unique identifier 1738UUOC useless use of cat 1739UUT unit under test 1740UX user experience 1741VA vertical alignment 1742VA virtual address 1743VA volt-ampere 1744VAX virtual address extension 1745VB Visual Basic 1746VBR volume boot record 1747VCA variable-gain amplifier 1748VCC common collector voltage 1749VCCP virtual chassis control protocol 1750VCF voltage-controlled filter 1751VCM virtual channel memory 1752VCO voltage-controlled oscillator 1753VCP virtual chassis port 1754VCS version control system 1755VDPAU Video Decode and Presentation API for Unix 1756VES virtual execution system 1757VESA Video Electronics Standards Association 1758VFO variable-frequency oscillator 1759VFS virtual file system 1760VG volume group 1761VGA Video Graphics Array 1762VHDCI very high density cable interconnect 1763VID {VLAN,voltage level} identifier 1764VIM Vi IMproved 1765VIPT virtually indexed, physically tagged 1766VIVT virtually indexed, virtually tagged 1767VLAN virtual local area network 1768VLD variable-length decoding 1769VLIW very long instruction word 1770VLSI very large scale integration 1771VLSM variable length subnet mask 1772VM virtual {machine,memory} 1773VME virtual mode extension 1774VMX vector multimedia extensions 1775VMX virtual machine extensions 1776VNC virtual network computing 1777VOD video on demand 1778VPD vital product data 1779VPN virtual private network 1780VPWS virtual private wire service 1781VR virtual reality 1782VRAM video random access memory 1783VRF virtual routing and forwarding 1784VRM voltage regulator module 1785VROC Virtual RAID On CPU 1786VRRP Virtual Router Redundancy Protocol 1787VSTP VLAN Spanning Tree Protocol 1788VTP VLAN Trunking Protocol 1789VXFS Veritas file system 1790VXVM Veritas volume manager 1791W watt 1792W3C World Wide Web Consortium 1793WAFL write anywhere file layout 1794WAMP Web Application Messaging Protocol 1795WAN wide area network 1796WAP Wireless Application Protocol 1797WAP wireless access point 1798WDM Windows Driver Model 1799WDDM Windows Display Driver Model 1800WDT watchdog timer 1801WEP Wired Equivalent Privacy 1802WFI wait for interrupt 1803WFQ weighted fair queuing 1804WH write hit 1805WHEA Windows hardware error architecture 1806WIFI wireless fidelity 1807WLAN wireless local area network 1808WM write miss 1809WMF Windows meta file 1810WMI Windows Management Instrumentation 1811WOL Wake-on-LAN 1812WOM Wake-on-Modem 1813WOR Wake-on-Ring 1814WORM write once read many 1815WP WordPerfect 1816WP word processor 1817WP write protect 1818WPA Wi-Fi Protected Access 1819WPA2 Wi-Fi Protected Access II 1820WPAD web proxy auto-discovery protocol 1821WPS Wi-Fi Protected Setup 1822WRAM window random access memory 1823WS web services 1824WTC write through caching 1825WTD weighted tail drop 1826WWAN wireless wide area network 1827WWW world wide web 1828WYSIAYG what you see is all you get 1829WYSIWYG what you see is what you get 1830XBAR crossbar 1831XDMCP X Display Manager control protocol 1832XER XML encoding rules 1833XGA Extended Graphics Array 1834XHR XMLHttpRequest 1835XIP execute in place 1836XML Extensible Markup Language 1837XNA XNA's not acronymed 1838XNS Xerox network systems 1839XOR exclusive or 1840XP extreme programming 1841XSI X/Open System Interface 1842XSL extensible stylesheet language 1843XSLT extensible stylesheet language transformations 1844XSS cross site scripting 1845XT extended technology 1846XTACACS extended terminal access controller access-control system 1847XTI X/Open transport interface 1848XUL XML user interface language 1849YACC yet another compiler compiler 1850YAML YAML ain't markup language 1851YANG yet another next generation 1852YAWPFAPR you are welcome; please file a problem report 1853YP Yellow Pages 1854YTD year to date 1855ZAP ZFS attribute processor 1856ZBR zone bit recording 1857ZFOD zero-filled on demand 1858ZFS zettabyte file system 1859ZIF zero insertion force 1860ZIFS zero insertion force socket 1861ZIL ZFS intent log 1862ZMA zone multicast address 1863ZOI zero one infinity 1864ZOI zone of influence 1865ZPL ZFS Posix layer 1866ZVOL ZFS Volume 1867