acronyms.comp revision 1.362
1$NetBSD: acronyms.comp,v 1.362 2023/09/06 19:56:57 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 47ALPN application-layer protocol negotiation 48ALS ambient light sensor 49ALSA advanced Linux sound architecture 50ALU arithmetic and logical unit 51ALUA asymmetric logical unit access 52AM access method 53AM alignment mask 54AM amplitude modulation 55AMD Advanced Micro Devices Inc 56AMDD Agile model-driven development 57AMI alternate mark inversion 58AMP asymmetric multiprocessing 59AMQP advanced message queuing protocol 60AMT active management technology 61AN Arabic number 62ANR application not responding 63ANSI American National Standards Institute 64AO analog output 65AOC add-on card 66AOL Alert-on-LAN 67AOS add or subtract 68AOT ahead of time 69AP access point 70AP application processor 71APFS Apple file system 72API application programming interface 73APEI ACPI platform error interface 74APIC advanced programmable interrupt controller 75APIPA automatic private IP addressing 76APM advanced power management 77APM application performance management 78APU accelerated processing unit 79APT advanced persistent threat 80AQM active queue management 81ARAT always running APIC timer 82ARC adaptive replacement cache 83ARC Advanced RISC Computing 84ARC automatic reference counting 85ARM Advanced RISC Machines 86ARP Address Resolution Protocol 87ARPA Advanced Research Projects Agency 88ARQ automatic repeat request 89ARR address range register 90ARU audio response unit 91AS autonomous system 92ASA Adaptive Security Appliance 93ASAN Address Sanitizer 94ASC advanced smart cache 95ASCII American Standard Code for Information Interchange 96ASD agile software development 97ASE advanced software environment 98ASF alert standard format 99ASIC application-specific integrated circuit 100ASK amplitude shift keying 101ASLR address space layout randomization 102ASN autonomous system number 103ASP active server pages 104ASP auxiliary storage pool 105ASPM active state power management 106ASQ automated software quality 107ASR address space register 108ASR Apple software restore 109AST abstract syntax tree 110AST asynchronous system trap 111AT access time 112AT advanced technology 113ATA advanced technology attachment 114ATAPI advanced technology attachment packet interface 115ATC address translation cache 116ATF ARM trusted firmware 117ATF automated testing framework 118ATM asynchronous transfer mode 119ATX advanced technology extended 120AV anti virus 121AVB audio video bridging 122AVL Adelson-Velsky-Landis 123AVX advanced vector extensions 124AWDL Apple wireless direct link 125BA byte align 126BAL basic assembly language 127BAR base address register 128BBS bulletin board system 129BCC blind carbon copy 130BCD binary coded decimal 131BCH boot console handler 132BCR byte count register 133BCS base configuration space 134BD baud 135BDD binary decision diagram 136BDI bit deinterleave 137BDUF big design up front 138BEDO burst extended data output 139BER basic encoding rules 140BER bit error {rate,ratio} 141BERT boot error record table 142BFD bidirectional forwarding detection 143BFD binary {file,format} descriptor 144BFKL big fscking kernel lock 145BFS breadth-first search 146BFT binary file transfer 147BGA ball grid array 148BGP Border Gateway Protocol 149BGPSEC BGP Security 150BIND Berkeley Internet Name Daemon 151BIOS Basic Input/Output System 152BIOS built-in operating system 153BIST built-in self-test 154BIU bus interface unit 155BKDG BIOS and kernel developer's guide 156BLAS basic linear algebra subprograms 157BLC back light control 158BLE Bluetooth low energy 159BLOB binary large object 160BM bus master 161BMC baseboard management controller 162BMP basic multilingual plane 163BMP bitmap image file 164BMIC bus master interface controller 165BN boundary neutral 166BNF Backus-Naur form 167BO binary output 168BOF beginning of file 169BOM beginning of message 170BOM byte order mark 171BP base pointer 172BP boot processor 173BPB BIOS parameter block 174BPDU bridge protocol data unit 175BPF Berkeley Packet Filter 176BPI bits per inch 177BPM business process modelling 178BPS bits per second 179BPSK binary phase shift keying 180BQP bounded-error quantum polynomial time 181BQS Berkeley quality software 182BRE basic regular expression 183BS backspace 184BS binary sequence 185BSA basic service area 186BSD Berkeley Software Distribution 187BSDP Boot Service Discovery Protocol 188BSF bit scan forward 189BSOD blue screen of death 190BSP binary space partition 191BSP board support package 192BSP bootstrap processor 193BSR bit scan reverse 194BSS basic service set 195BSS block started by symbol 196BSSID basic service set identifier 197BT BitTorrent 198BT Bluetooth 199BT bit test 200BTC bit test [and] complement 201BTM bus transport mechanism 202BTR bit test [and] reset 203BTS bit test [and] set 204BTS bug tracking system 205BW bandwidth 206BWM block-write mode 207BUAG big ugly ASCII graphic 208CA certificate authority 209CAC cryptographic access control 210CACLS change access control lists 211CAD computer-aided design 212CAM computer assisted manufacturing 213CAM conditional access module 214CAM content addressable memory 215CARP Common Address Redundancy Protocol 216CAS column address strobe 217CAS compare and swap 218CAS computer algebra system 219CASE computer aided software engineering 220CAU control access unit 221CAV constant angular velocity 222CBC cipher block chaining 223CBR constant bit rate 224CC carbon copy 225CCC Chaos Computer Club 226CCD charge coupled device 227CCI co-channel interferer 228CCNUMA cache-coherent non-uniform memory access 229CCTL command completion time limit 230CD cache disable 231CD compact disc 232CDDA compact disc digital audio 233CDL compiler description language 234CDMA code division multiple access 235CDN content delivery network 236CDP Cisco Discovery Protocol 237CDRAM cache dynamic random access memory 238CER canonical encoding rules 239CE customer edge 240CF compact flash 241CFB cipher feedback 242CFG context-free grammar 243CFG control-flow graph 244CFI control-flow integrity 245CG control gate 246CGA Color Graphics Adapter 247CGI common gateway interface 248CGN Carrier-Grade NAT 249CHAP Challenge-Handshake Authentication Protocol 250CHFS chip file system 251CHS cylinder/head/sector 252CI continuous integration 253CI {common,component} interface 254CIA confidentiality, integrity, availability 255CIDR Classless Inter-Domain Routing 256CIF common intermediate format 257CIFS Common Internet File System 258CIL common intermediate language 259CIR carrier-to-interference ratio 260CIS contact image sensor 261CISC complex instruction set {computer,computing} 262CJK Chinese, Japanese, [and] Korean 263CLF common log format 264CLI command line interface 265CLI common language infrastructure 266CLR common language runtime 267CLS common language specification 268CLTT closed loop thermal throttling 269CLUT color look-up table 270CLV constant linear velocity 271CM configuration management 272CMA concert multithread architecture 273CMC chassis management controller 274CMC corrected machine check 275CMC certificate management over CMS 276CMS {configuration,content,course} management system 277CMS cryptographic message syntax 278CMI control {management,method} interface 279CMOS complementary metal-oxide-semiconductor 280CMP chip multi-processing 281CMS content management system 282CMYK cyan magenta yellow black 283CN {common,canonical} name 284CNA CVE Numbering Authority 285CNC computer numerical control 286CNR carrier-to-noise ratio 287COA change of authority 288COF current operating frequency 289COFDM coded orthogonal frequency division multiplexing 290COFF common object file format 291COM component object model 292COM computer on module 293COMA cache-only memory architecture 294CORBA common object request broker architecture 295COS class of service 296COW copy-on-write 297CP continuous pilot 298CPA chosen-plaintext attack 299CPB core performance boost 300CPC central processor complex 301CPC cpu performance counters 302CPE common phase error 303CPE common platform enumeration 304CPER common platform error record 305CPG clock pulse generator 306CPI cycles per instruction 307CPL current privilege level 308CPLD complex programmable logic device 309CPP C preprocessor 310CPS characters per second 311CPS continuation-passing style 312CPT command pass through 313CPU central processing unit 314CR carriage return 315CRC cyclic redundancy check 316CRDT conflict-free replicated data type 317CRL carrier recovery loop 318CRLF carriage return line feed 319CSPM cloud security posture management 320CSU C start up 321CRT cathode ray tube 322CRTP curiously recurring template pattern 323CRUD create, read, update, and delete 324CS cable select 325CS chip select 326CS code segment 327CS computer science 328CSDL {common,conceptual} schema definition language 329CSI channel state information 330CSI common system interface 331CSMA carrier sense multiple access 332CSMA/CA carrier sense multiple access with collision avoidance 333CSMA/CD carrier sense multiple access with collision detection 334CSP communicating sequential processes 335CSP content security policy 336CSP constrain satisfaction problems 337CSP cryptographic service provider 338CSR control [and] status registers 339CSRG Computer Systems Research Group 340CSS cascading style sheets 341CST common spanning tree 342CSV comma-separated values 343CTF compact c type format 344CTM close to metal 345CTR counter [mode] 346CTS clear to send 347CTS common type system 348CUA common user access 349CUT coordinated universal time 350CV control voltage 351CVE common vulnerabilities and exposures 352CVS Concurrent Versions System 353DA destination address 354DAA distributed application architecture 355DAAP digital audio access protocol 356DAB digital audio broadcasting 357DAC digital [to] analog converter 358DAC discretionary access control 359DAD duplicate address detection 360DAE deterministic authenticated encryption 361DANE DNS-based Authentication of Named Entities 362DAO disk at once 363DAP Directory Access Protocol 364DAT digital audio tape 365DAT dynamic acceleration technology 366DB database 367DBA database administrator 368DBA dynamic bandwidth allocation 369DBB data bus buffer 370DBC design by contract 371DBL dynamic buffer limiting 372DBMS database management system 373DBS database server 374DC data center 375DC direct current 376DCC Direct Client-to-Client 377DCC direct cable connect 378DCD data carrier detect 379DCE data control equipment 380DCE distributed computing environment 381DCIM data center infrastructure management 382DCIM digital camera images 383DCL Digital Command Language 384DCOM distributed component object model 385DCOP Desktop COmmunication Protocol 386DCS data collection systems 387DCT discrete cosine transform 388DCU data cache unit 389DDC display data channel 390DDE dynamic data exchange 391DDI device drivers interface 392DDK device driver kit 393DDL data description language 394DDR double data rate 395DDS direct digital sound 396DDWG Digital Display Working Group 397DE debugging extensions 398DE desktop environment 399DEA data encryption algorithm 400DEC Digital Equipment Corporation 401DEK data encryption key 402DEP data execution prevention 403DER distinguished encoding rules 404DES Data Encryption Standard 405DF don't fragment 406DFA deterministic finite automaton 407DFC data flow control 408DFS depth first search 409DFS distributed file system 410DFSAN Data Flow Sanitizer 411DFT diagnostic function test 412DFT discrete Fourier transform 413DGL data generation language 414DGEMM double precision general matrix multiply 415DH Diffie-Hellman 416DHCP Dynamic Host Configuration Protocol 417DIA dedicated Internet access 418DIB device independent bitmap 419DIFS distributed inter-frame space 420DIMM dual inline memory module 421DIRT design in real time 422DKI driver/kernel interface 423DL diode logic 424DL discrete logarithm 425DL download 426DLCI data link connection identifier 427DLE data link escape 428DLL dynamic link library 429DLNA digital living network alliance 430DLP discrete logarithm problem 431DMA direct memory access 432DMI desktop management interface 433DMS document management system 434DMT discrete multitone modulation 435DMU data management layer 436DNARD Digital network appliance reference design 437DND drag and drop 438DNLC directory name lookup cache 439DNS Domain Name System 440DNSBL Domain Name System Block List 441DNSSEC DNS Security Extensions 442DOE distributed object environment 443DOF data over fibre 444DOM document object model 445DOS denial of service 446DOS disk operating system 447DP DisplayPort 448DPAA data path acceleration architecture 449DPC deferred procedure call 450DPCM differential pulse code modulation 451DPD dead peer detection 452DPDK data plane development kit 453DPI deep packet inspection 454DPI dots per inch 455DPL descriptor privilege level 456DPS Display PostScript 457DPST display power savings technology 458DRAAS disaster recovery as a service 459DRAM dynamic random access memory 460DRBG deterministic random bit generator 461DRI direct rendering infrastructure 462DRM digital rights management 463DRM direct rendering manager 464DRRS display refresh rate switching 465DS debug store 466DS differentiated services 467DS9000 DeathStation 9000 468DS9K DeathStation 9000 469DSA digital signature algorithm 470DSAP destination service access point 471DSB double-sideband modulation 472DSCP differentiated services code point 473DSDT differentiated system descriptor table 474DSF device special file 475DSL dataset and snapshot layer 476DSL digital subscriber line 477DSL domain specific language 478DSLAM digital subscriber line access multiplexer 479DSN delivery status notification 480DSO dynamic shared object 481DSP digital signal processor 482DSSS direct sequence spread spectrum 483DTB device tree blob 484DTC device tree compiler 485DTD document type definition 486DTE data terminal equipment 487DTE dumb terminal emulator 488DTL diode-transistor logic 489DTLS datagram transport layer security 490DTS device tree source 491DTS digital thermal sensor 492DUT device under test 493DVB digital video broadcasting 494DVCS distributed version control system 495DVD digital versatile disc 496DVFS dynamic voltage and frequency scaling 497DVI device independent 498DVI Digital Visual Interface 499DVR digital video recorder 500DWARF Debugging With Attributed Record Formats 501E-XER extended XML encoding rules 502EABI embedded-application binary interface 503EAI Email Address Internationalization 504EAI Enterprise Application Integration 505EAP Extensible Authentication Protocol 506EAPOL EAP over Lan 507EAV entity-attribute-value model 508EAV ethernet audio/video bridging 509EBCDIC Extended Binary Coded Decimal Interchange Code 510EBDA Extended BIOS Data Area 511EBNF extended backus-naur form 512EBR extended boot record 513EC elliptic curve 514ECC elliptic curve cryptography 515ECC error correction code 516ECDH elliptic curve Diffie-Hellman 517ECDL elliptic curve discrete logarithm 518ECDLP elliptic curve discrete logarithm problem 519ECDSA elliptic curve digital signature algorithm 520ECL emitter-coupled logic 521ECN explicit congestion notification 522ECP enhanced capability port 523ECS enhanced chip set 524ECS extended configuration space 525EDAC error detection and correction 526EDAT enhanced dynamic acceleration technology 527EdDSA Edwards curve digital signature algorithm 528EDGE explicit data graph execution 529EDID extended display identification data 530EDO extended data out 531EDS electronical data sheet 532EDSAC electronic delay storage automatic calculator 533EDVAC electronic discrete variable automatic computer 534EEE energy efficient ethernet 535EEE embrace, extend, extinguish 536EEPROM electrically erasable programmable read only memory 537EFI extensible firmware interface 538EFL emitter follower logic 539EFM eight to fourteen modulation 540EFS extent file system 541EGA Enhanced Graphics Adapter 542EGP exterior gateway protocol 543EH extension header 544EIDE enhanced IDE 545EISA extended industry standard architecture 546EINJ error injection table 547ELF executable and linking format 548ELS entry level system 549EMI electro-magnetic interference 550EMP electro-magnetic pulse 551EMR electro-magnetic radiation 552EMACS Editor MACroS 553ENIAC electronic numerical integrator and computer 554EOF end of file 555EOI end of interrupt 556EOIS end of interactive support 557EOL end of life 558EOL end of line 559EOT end of transmission 560EPIC explicitly parallel instruction computing 561EPP enhanced parallel port 562EPRML extended partial response, maximum likelihood 563EPROM erasable programmable read only memory 564EPT extended page tables 565ERC error recovery control 566ERD emergency recovery disk 567ERD entity relationship diagram 568ERE extended regular expression 569ERST error record serialization table 570ESAN Efficiency Sanitizer 571ESB enterprise service bus 572ESDI enhanced small disk interface 573ESDRAM enhanced synchronous dynamic random access memory 574ESI enclosure services interface 575ESS electronic switching system 576ESS extended service set 577ESSID extended service set identifier 578EST enhanced speedstep 579ETL extract, transform, load 580EU execution unit 581EULA end user license agreement 582FAT file allocation table 583FBRAM frame buffer random access memory 584FCIF full common intermediate format 585FCL fiber channel loop 586FCS frame check sequence 587FDC floppy disk controller 588FDD floppy disk drive 589FDDI fiber distributed data interface 590FDE full disk encryption 591FDT flattened device tree 592FEA finite element analysis 593FEC forward error correction 594FET field-effect transistor 595FF finite field 596FF form feed 597FFDH finite-field Diffie-Hellman 598FFH functional fixed hardware 599FFI foreign function interface 600FFM focus follows mouse 601FFS Fast File System 602FFS find first set 603FFT fast Fourier transform 604FG floating gate 605FHRP first hop redundancy protocol 606FHSS frequency hop spread spectrum 607FID frequency identifier 608FIFO first in, first out 609FILO first in, last out 610FIPS Federal Information Processing Standards 611FIR fast infrared 612FLOPS floating [point] operations per second 613FLOSS free/libre/open source software 614FM frequency modulation 615FMR false match rate 616FOSS free/open source software 617FPGA field programmable gate array 618FPM fast page mode 619FPR floating point register 620FPU floating point unit 621FQDN fully qualified domain name 622FRR false rejection rate 623FRU field replaceable unit 624FS file system 625FSB front side bus 626FSCK file system check 627FSF Free Software Foundation 628FSK frequency shift keying 629FSM finite-state machine 630FTA fault tree analysis 631FTL flash translation layer 632FTP File Transfer Protocol 633FTPS File Transfer Protocol Secure 634FTTH fiber to the home 635FUS fast user switching 636FWH firmware hub 637FWS folding white space 638GAL generic array logic 639GARP generic attribute registration protocol 640GAS generic address structure 641GC garbage collector 642GCC GNU Compiler Collection 643GCM Galois counter mode 644GCR group-coded recording 645GDI Graphics Device Interface 646GDT global descriptor table 647GECOS general comprehensive operating supervisor 648GEM graphics environment manager 649GEM graphics execution manager 650GEMM general matrix multiply 651GENA general event notification architecture 652GHC Glasgow Haskell compiler 653GHES generic hardware error source 654GIC generic interrupt controller 655GID group identifier 656GIF graphics interchange format 657GLBP gateway load balancing protocol 658GMCH graphics and memory controller hub 659GNU GNU's Not Unix 660GOP graphics output protocol 661GOT global offset table 662GPE general purpose event 663GPF general protection fault 664GPG GNU Privacy Guard 665GPL [GNU] General Public License 666GPR general purpose register 667GPS generalized processor sharing 668GPT GUID partition table 669GPU graphics processing unit 670GR golden ratio 671GRE generic routing encapsulation 672GRO generic receive offload 673GSI global system interrupt 674GSO generic send offload 675GUI graphical user interface 676GUID globally unique identifier 677GUS Gravis UltraSound 678GVFS git virtual file system 679HA high availability 680HAL hardware abstraction layer 681HAT hashed array tree 682HATEOAS hypermedia as the engine of application state 683HBA host bus adapter 684HCC Home Cable Computer 685HCCA Home Cable Computer Adaptor 686HCF halt and catch fire 687HCI host controller interface 688HCI human-computer interaction 689HCL hardware compatibility list 690HDCP High-bandwidth Digital Content Protection 691HDD hard disk drive 692HDL hardware description language 693HDMI High-Definition Multimedia Interface 694HDTV high-definition television 695HECI host embedded controller interface 696HEST hardware error source table 697HEVC high efficiency video coding 698HF high frequency 699HFM highest frequency mode 700HFS hierarchical file system 701HID human interface device 702HKDF HMAC-based key derivation function 703HKP HTTP Keyserver Protocol 704HLL high-level language 705HMA high memory area 706HMI human-machine interface 707HOOD hierarchical object oriented design 708HOTP HMAC-based one time password 709HP Hewlett-Packard 710HPC high performance computing 711HPD hot plug detection 712HPET high precision event timer 713HSM hardware security module 714HSM hierarchical storage management 715HSRP hot standby router protocol 716HT hyper-threading 717HTC hardware thermal control 718HTCC high temperature co-fired ceramic 719HTML HyperText Markup Language 720HTT hyper-threading technology 721HTTP Hypertext Transfer Protocol 722HTTPS Hypertext Transfer Protocol Secure 723HVM hardware virtual machine 724HVDS High-Voltage Differential Signaling 725HWASAN Hardware-assisted Address Sanitizer 726HZ Hertz 727I2O intelligent input/output 728IA information assurance 729IAAS infrastructure as a service 730IANA Internet Assigned Numbers Authority 731IAB Internet Architecture Board 732IBC iterated block cipher 733IBM International Business Machines 734IBPI international blinking pattern interpretation 735IBS instruction based sampling 736IBSS independent basic service set 737IC integrated circuit 738ICA independent computer architecture 739ICACLS integrity control access control lists 740ICB Internet Citizen's Band 741ICE in-circuit emulator 742ICE internal compiler error 743ICH I/O controller hub 744ICMP Internet Control Message Protocol 745ICT information and communications technology 746ICW initialization command word 747IDA Intel dynamic acceleration 748IDCMP Intuition direct communication message port 749IDCT inverse discrete cosine transform 750IDE integrated development environment 751IDE integrated drive electronics 752IDPS intrusion detection [and] prevention system 753IDRP inter-domain routing protocol 754IDS intrusion detection system 755IDT interrupt descriptor table 756IE Internet Explorer 757IEC International Electrotechnical Commission 758IEEE Institute of Electrical and Electronics Engineers 759IESG Internet Engineering Steering Group 760IETF Internet Engineering Task Force 761IF intermediate frequency 762IFCM isochronous flow control mode 763IFF Interchange File Format 764IFS internal field separator 765IGD Internet gateway device 766IGMP Internet Group Management Protocol 767IGP interior gateway protocol 768IHV independent hardware vendor 769IKE Internet key exchange 770ILM internal loopback mode 771ILOM integrated lights-out management 772ILP instruction level parallelism 773IM instant messaging 774IME input method editor 775IMAP Internet Message Access Protocol 776IMC integrated memory controller 777IMCR interrupt mode configuration register 778IMR interrupt mask register 779IMS information management system 780IMSI international mobile subscriber identity 781INCITS InterNational Committee for Information Technology Standards 782INODE index node 783IO input/output 784IOCTL input/output control 785IOM input/output managers 786IOMMU input/output memory management unit 787IOT Internet of Things 788IP Internet Protocol 789IP intellectual property 790IPC instructions per cycle 791IPC interprocess communication 792IPCF interprocess communication facility 793IPE integrated programming environment 794IPI intelligent peripheral interface 795IPI interprocessor interrupt 796IPL Initial Program Load 797IPL Interrupt Priority Level 798IPMB Intelligent Platform Management Bus 799IPMI Intelligent Platform Management Interface 800IPNG Internet Protocol, Next Generation 801IPS in-plane switching 802IPS intrusion prevention system 803IPSEC Internet Protocol Security 804IRC Internet Relay Chat 805IRDA infrared data association 806IRDP ICMP Router Discovery Protocol 807IR intermediate representation 808IRQ interrupt request 809IRQL interrupt request level 810IRR interrupt request register 811IRTF Internet Research Task Force 812IS information system 813ISA industry standard architecture 814ISA instruction set architecture 815ISE instant secure erase 816ISDN integrated services digital network 817ISI inter-symbol interference 818ISL initial system load 819ISM industrial, scientific, [and] medical 820ISMS information system management system 821ISN initial serial number 822ISO International Standards Organization 823ISOC Internet Society 824ISP Internet service provider 825ISR in-service register 826ISR interrupt service routine 827IST internal spanning tree 828IST interrupt stack table 829ISV independent software vendor 830IT information technology 831ITB Intel Turbo Boost 832ITIL information technology infrastructure library 833ITP in-target probe 834ITSM IT service management 835IV initialization vector 836IVT interrupt vector table 837JBOD just a bunch of disks 838JCL Job Control Language 839JFET junction [gate] field-effect transistor 840JIT just in time 841JPEG Joint Photographic Experts Group 842JRE Java Runtime Environment 843JSON JavaScript Object Notation 844JTAG joint test action group 845KASAN Kernel Address Sanitizer 846KASLR kernel address space layout randomization 847KB keyboard 848KB kilobyte 849KBD keyboard 850KBD kilobaud 851KCS keyboard controller style 852KEM key encapsulation mechanism 853KLOC thousand lines of code 854KMS kernel-mode setting 855KPI kernel programming interface 856KVA kernel virtual address 857KVM kernel virtual machine 858KVM kernel virtual memory 859KVM keyboard, video, [and] mouse 860L2CAP link layer control and adaptation protocol 861LAG link aggregation group 862LAMP Linux Apache MySQL {Perl,PHP,Python} 863LAN local area network 864LAPIC local advanced programmable interrupt controller 865LAR load access rights 866LBA logical block addressing 867LBNF labeled backus-naur form 868LBS location-based service 869LCD liquid crystal display 870LCP link control protocol 871LDA local delivery agent 872LDAP Lightweight Directory Access Protocol 873LDR light-dependent resistor 874LDT local descriptor table 875LE logical extent 876LED light emitting diode 877LELL low energy link layer 878LER label edge router 879LF line feed 880LF low frequency 881LFM lowest frequency mode 882LFN long file names 883LFO low-frequency oscillation 884LFS log-structured file system 885LFU least frequently used 886LHP loop heat pipe 887LIF logical interchange format 888LIFO last in, first out 889LILO LInux LOader 890LILO last in, last out 891LINT local interrupt 892LIR local Internet registry 893LISP LISt Processor 894LISP Locator/ID Separation Protocol 895LKM {Linux,loadable} kernel module 896LKML Linux kernel mailing list 897LL load linked 898LL/SC load linked/store conditional 899LLC logical link control 900LLD low-level design 901LLDD low-level design document 902LLDP link layer discovery protocol 903LLF low level format 904LLMNR link-local multicast name resolution 905LLVM Low Level Virtual Machine 906LM long mode 907LMCE local machine check exception 908LMI local management interface 909LMM link management mode 910LMP link management protocol 911LNO loop nest optimization 912LOC lines of code 913LOM lights-out management 914LPE Linux performance events 915LPC low pin count 916LPS local positioning system 917LRC longitudinal redundancy check 918LRM left-to-right mark 919LRO Large Receive Offload 920LRO left-to-right override 921LRU least recently used 922LS link state 923LSAN Leak Sanitizer 924LSB Linux standards base 925LSB least significant {bit,byte} 926LSI large scale integration 927LSL load segment limit 928LSM log structured merge 929LSN Large Scale NAT 930LSN log sequence number 931LSO large send offload 932LSR label switch router 933LTCC low temperature co-fired ceramic 934LTO linear tape-open 935LTO link time optimization 936LTR left to right 937LTR load task register 938LTR letter(-sized paper) 939LTS long term support 940LUA Lua Uppercase Accident 941LUN logical unit number 942LV logical volume 943LVM logical volume management 944LVT local vector table 945LVDS Low-Voltage Differential Signaling 946LWP light-weight process 947LZSS Lempel Ziv Storer Szymanski 948LZW Lempel Ziv Welch 949MAB MAC authentication bypass 950MAC mandatory access control 951MAC {media,medium} access control 952MAC message authentication {check,code} 953MADT multiple APIC descriptor table 954MAMR microwave-assisted magnetic recording 955MB megabyte 956MBA multi-boot agent 957MBR master boot record 958MBS megabits per second 959MC memory controller 960MCA machine check architecture 961MCA MicroChannel architecture 962MCC multiversion concurrency control 963MCE machine check exception 964MCGA Multi-Color Graphics Array 965MCH memory controller hub 966MCLAG multi-chassis link aggregation group 967MCM multi-chip module 968MCQ memory controlled queue 969MD machine-dependent 970MD MiniDisc 971MD-SAL model-driven service abstraction layer 972MDA mail delivery agent 973MDA Monochrome Display Adapter 974MDC Management Data Clock 975MDI Medium Dependent Interface 976MDI-X Medium Dependent Interface Crossover 977MDIO Management Data Input/Output 978MDMX MIPS Digital Media eXtension 979MDRAM multibank dynamic random access memory 980MESI modified, exclusive, shared, invalid 981MFC merge from current 982MFC Microsoft Foundation Classes 983MFM modified frequency modulation 984MFU most frequently used 985MGCP media gateway control protocol 986MHU message handling unit 987MI machine-independent 988MI machine interface 989MIB management information base 990MIC message integrity {check,code} 991MID mobile Internet device 992MIDI musical instrument digital interface 993MIF management information format 994MII media independent interface 995MIM man in the middle 996MIMD multiple instruction, multiple data 997MIME Multipurpose Internet Mail Extensions 998MIMO multiple input multiple output 999MIPS million instructions per second 1000MIPS Microprocessor without Interlocked Pipeline Stages 1001MISD multiple instruction, single data 1002MIT Massachusetts Institute of Technology 1003MITM man in the middle 1004ML machine language 1005ML machine learning 1006ML mailing list 1007ML markup language 1008ML maximum likelihood 1009MLAG multi-chassis link aggregation group 1010MLC multi-level cell 1011MLD multicast listener discovery 1012MLHP micro loop heat pipe 1013MLIR multi-level intermediate representation 1014MLO MMC loader 1015MMC multi-media card 1016MMF multi-mode fiber 1017MMIC monolithic microwave integrated circuit 1018MMIO memory mapped input/output 1019MMORPG massive multiplayer online role playing game 1020MMRP multiple MAC registration protocol 1021MMU memory management unit 1022MMX matrix math extension 1023MMX multimedia extension 1024MMX multiple math extension 1025MO magneto-optical 1026MOESI modified, owned, exclusive, shared, invalid 1027MOF maximum operating frequency 1028MOSFET metal-oxide-semiconductor field-effect transistor 1029MOSI modified, owned, shared, invalid 1030MP multi-platform 1031MP multiplayer 1032MP {multiprocessing,multiprocessor} 1033MPEG moving picture experts group 1034MPI message passing interface 1035MPLS Multiprotocol Label Switching 1036MPP massively parallel processor 1037MPS memory pool system 1038MPS multiprocessor specification 1039MQTT Message Queuing Telemetry Transport 1040MR modem ready 1041MRO method resolution order 1042MRP multiple registration protocol 1043MRU most recently used 1044MS Microsoft 1045MSAN Memory Sanitizer 1046MSB most significant {bit,byte} 1047MSC message sequence chart 1048MSE mean square error 1049MSF minutes seconds frames 1050MSI message signaled interrupt 1051MSI modified, shared, invalid 1052MSR {machine state,model-specific} register 1053MSS maximum segment size 1054MSTP Multiple Spanning Tree Protocol 1055MT machine translation 1056MTA mail transfer agent 1057MTBF mean time between failures 1058MTP media transfer protocol 1059MTRR memory type range register 1060MTTF mean time to failure 1061MTU maximum transmission unit 1062MUA mail user agent 1063MUD multi-user domain 1064MVCC multiversion concurrency control 1065MVR multicast VLAN registration 1066MVRP multiple VLAN registration protocol 1067MWE module width encoding 1068MX mail exchange 1069NACK negative acknowledgement 1070NAK negative acknowledgement 1071NAN neighbor awareness networking 1072NAN not a number 1073NAPT Network Address Port Translation 1074NAS network attached storage 1075NAT network address translation 1076NAV network allocation vector 1077NC numerical control 1078NC-SI network controller sideband interface 1079NCO numerically-controlled oscillator 1080NCP Network Control Protocol 1081NCSI network connectivity status indicator 1082NCQ native command queuing 1083ND neighbor discovery 1084NDFA nondeterministic finite automaton 1085NDIS network driver interface specification 1086NE numeric error 1087NEWS Network extensible Window System 1088NFA nondeterministic finite automaton 1089NFC near-field communication 1090NFCI no functional change intended 1091NFS network file system 1092NFV network function virtualization 1093NHACP NABU HCCA Application Communication Protocol 1094NIA next instruction address 1095NIC network information center 1096NIC network interface card 1097NIDS network intrusion detection system 1098NIP network interface protocol 1099NIPS network intrusion prevention system 1100NIS network information service 1101NIST National Institute of Standards and Technology 1102NLS native language support 1103NMI non-maskable interrupt 1104NNTP Network News Transfer Protocol 1105NMR nonce-misuse resistance 1106NOC network operations center 1107NOP no operation 1108NOS network operating system 1109NP nondeterministic polynomial time 1110NRND not recommended for new designs 1111NRZ non-return to zero 1112NSA nation-state adversary 1113NSA no such agency 1114NSA National Security Agency 1115NTM non-deterministic Turing machine 1116NTP Network Time Protocol 1117NUMA non-uniform memory access 1118NURBS non-uniform rational basis spline 1119NVMM NetBSD Virtual Machine Monitor 1120NVMM non-volatile main memory 1121NVRAM non-volatile random access memory 1122NW not write-through 1123NX no execute 1124OAEP optimal asymmetric encryption padding 1125OAM operations, administration, and {management,maintenance} 1126OBO off by one 1127OBOE off by one error 1128OCL object constraint language 1129OCR optical character recognition 1130ODE offline device environment 1131ODI open data-link interface 1132ODM object data manager 1133ODCM on-demand clock modulation 1134ODMR on-demand mail relay 1135ODT on-die termination 1136OEM original equipment manufacturer 1137OFB output feedback 1138OFDM orthogonal frequency division multiplexing 1139OFET organic field-effect transistor 1140OLAP online analytical processing 1141OLE object linking and embedding 1142OLTP online transaction processing 1143ONCE on-{chip,circuit} emulation 1144ONFI open nand flash interface 1145OO OpenOffice 1146OO object oriented 1147OOB out of band 1148OOE out of order execution 1149OOM out of memory 1150OOO OpenOffice.org 1151OOP object oriented programming 1152OOPS object oriented programming systems 1153OOSE object oriented software engineering 1154OPM operations per minute 1155OPS operations per second 1156OQL Object Query Language 1157ORB object request broker 1158ORM object-relational mapping 1159OS operating system 1160OSD object-based storage device 1161OSD open source definition 1162OSF open software foundation 1163OSI Open Source Initiative 1164OSI open systems interconnection 1165OSPF open shortest path first 1166OSPM OS power management 1167OSS open sound system 1168OSS open source software 1169OSVW operating system visible workarounds 1170OTP one time password 1171OTP open telecom platform 1172OU organizational unit 1173OUI organizationally unique identifier 1174OWASP Open Web Application Security Project 1175OWL Web Ontology Language 1176P2P PCI to PCI 1177P2P peer to peer 1178PA phase accumulator 1179PA physical address 1180PAAS platform as a service 1181PAC phase-amplitude converter 1182PAE physical address extension 1183PAGP port aggregation protocol 1184PAL phase alternating line 1185PAL programmable array logic 1186PAM pluggable authentication modules 1187PAM pulse amplitude modulation 1188PAP password authentication protocol 1189PAT page attribute table 1190PAT port address translation 1191PATA parallel ATA 1192PAX portable archive exchange 1193PBE pending break encoding 1194PBE programming by example 1195PBR partition boot record 1196PBX private branch exchange 1197PC personal computer 1198PC program counter 1199PCB printed circuit board 1200PCB process control block 1201PCB Protocol Control Block 1202PCBC propagating cipher block chaining 1203PCC Portable C Compiler 1204PCD page-level cache disable 1205PCE path computation element 1206PCE performance-monitor counter enable 1207PCEP Path Computation Element Protocol 1208PCH platform controller hub 1209PCI peripheral component interconnect 1210PCM phase change memory 1211PCM pulse code modulation 1212PCMCIA Personal Computer Memory Card International Association 1213PCP Port Control Protocol 1214PD public domain 1215PDA personal digital assistant 1216PDA pushdown automaton 1217PDAG propositional directed acyclic graph 1218PDB power distribution board 1219PDF portable document format 1220PDM pulse-duration modulation 1221PDN pull-down network 1222PDP page {descriptor,directory} page 1223PDS product data sheet 1224PDU protocol data unit 1225PE protection enable 1226PE provider edge 1227PE portable executable 1228PEAP Protected EAP 1229PECI platform environment control interface 1230PEP protocol extension protocol 1231PER packed encoding rules 1232PFS perfect forward secrecy 1233PGAS partitioned global address space 1234PGE page global enable 1235PGO profile guided optimization 1236PGP Pretty Good Privacy 1237PHB PCI host bridge 1238PHP PHP: Hypertext Preprocessor 1239PIC performance instrumentation counters 1240PIC position independent code 1241PIC programmable interrupt controller 1242PICNIC problem in chair, not in computer 1243PID process id 1244PIE position independent executable 1245PIL Priority Interrupt Level 1246PIM personal information manager 1247PIM platform-independent model 1248PIO programmed input/output 1249PIPT physically indexed, physically tagged 1250PIR private information retrieval 1251PIQ prefetch input queue 1252PIT programmable interrupt timer 1253PIV personal identity verification 1254PIX Private Internet eXchange 1255PKCS public-key cryptography standards 1256PKI public key infrastructure 1257PLC programmable logic controller 1258PLD programmable logic device 1259PLL phase locked loop 1260PLRU pseudo LRU 1261PLT procedure linkage table 1262PLTM package level thermal management 1263PM power management 1264PM {phase,pulse} modulation 1265PMC performance monitoring counters 1266PME power management event 1267PMEG page map entry group 1268PMI performance monitoring infrastructure 1269PMI platform management interrupt 1270PMIC power management integrated circuit 1271PMIO port-mapped input/output 1272PMT photo-multiplier tube 1273PMU performance monitoring units 1274PMU power management unit 1275PNG portable network graphics 1276PNP plug and play 1277POE power over ethernet 1278POF probability of failure 1279POP Post Office Protocol 1280POP power on password 1281POR plan of record 1282POSIX Portable Operating System Interface [for Unix] 1283POST power on self test 1284POTS plain old telephone system 1285POWER Performance Optimization With Enhanced RISC 1286POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1287PP pair programming 1288PPB PCI [to] PCI bridge 1289PPC PowerPC 1290PPC Power Performance Computing 1291PPI pixels per inch 1292PPM pages per minute 1293PPP Point-to-Point Protocol 1294PPPOA Point-to-Point Protocol over ATM 1295PPPOE Point-to-Point Protocol over Ethernet 1296PPR processor programming reference 1297PPT powerpoint 1298PPT punched paper tape 1299PPU physics processing unit 1300PQC post-quantum cryptography 1301PRAM Parameter RAM 1302PRBS pseudorandom bit sequence 1303PRG pseudorandom generator 1304PRF pseudorandom function [family] 1305PRML partial response, maximum likelihood 1306PRN pseudorandom {noise,number} 1307PRNG pseudorandom number generator 1308PROM programmable read only memory 1309PRP pseudorandom permutation 1310PRU Programmable Realtime Unit 1311PS PostScript 1312PSD power spectral density 1313PSE page size extensions 1314PSK phase shift keying 1315PSK pre-shared key 1316PSTN public switched telephone network 1317PSW program status word 1318PTE page table entry 1319PTLA pseudo top level aggregator 1320PTP page table page 1321PTV perceived target value 1322PU processing unit 1323PUC personal unblocking code 1324PUN physical unit number 1325PV physical volume 1326PVC permanent virtual circuit 1327PVG physical volume group 1328PVI protected-mode virtual interrupt 1329PVRST Per-VLAN rapid spanning tree 1330PVST Per-VLAN Spanning Tree 1331PWM pulse width modulation 1332PXE preboot execution environment 1333QA quality assurance 1334QAM quadrature amplitude modulation 1335QAM quality assurance management 1336QBE query by example 1337QC quality control 1338QDI quasi delay insensitive 1339QCIF quarter common intermediate format 1340QOI quality of implementation 1341QOI quick order interface 1342QOS quality of service 1343QVL qualified vendor list 1344R/O read only 1345R/W read/write 1346RA receiver address 1347RA remote assistance 1348RA resource affinity 1349RA router advertisement 1350RAD rapid application development 1351RADIUS remote authentication dial-in user service 1352RAID redundant array of {independent,inexpensive} disks 1353RAII resource acquisition is initialization 1354RAM random access memory 1355RAS reliability, availability and serviceability 1356RAS remote access service 1357RAS restartable atomic sequence 1358RAS row address strobe 1359RAT register allocation table 1360RBF radial basis function 1361RBL reputation block list 1362RBL real-time blackhole list 1363RBNF routing backus-naur form 1364RBT red-black tree 1365RC release candidate 1366RC remote control 1367RC run commands 1368RCS Revision Control System 1369RCU read, copy, update 1370RDB Rigid Disk Block 1371RDBMS relational database management system 1372RDF Resource Description Framework 1373RDM relational data model 1374RDMA remote direct memory access 1375RDP remote desktop protocol 1376RDRAM Rambus DRAM 1377RE regular expression 1378REPL read, evaluate, print, loop 1379REST representational state transfer 1380RF radio frequency 1381RFB remote frame buffer 1382RFI radio frequency interference 1383RFO request for ownership 1384RFU reserved for future use 1385RGB red green blue 1386RGBA red green blue alpha 1387RGMII reduced gigabit media independent interface 1388RH read hit 1389RHEL Red Hat Enterprise Linux 1390RHL Red Hat Linux 1391RIB routing information base 1392RIFF Resource Interchange File Format 1393RIP Raster Image Processor 1394RIP Routing Information Protocol 1395RIR regional Internet registry 1396RISC reduced instruction set {computer,computing} 1397RKM ROM Kernel Manual 1398RLE run length encoding 1399RLL run length limited 1400RLO right-to-left override 1401RM read miss 1402RMCP Remote Management Control Protocol 1403RMI remote method invocation 1404RMO Relaxed Memory Ordering 1405RMPM rapid memory power management 1406RMS root mean square 1407RMW read, modify, write 1408RNG random number generator 1409ROM read only memory 1410ROP return-oriented programming 1411RPC remote procedure call 1412RPG Report Program Generator 1413RPKI resource PKI 1414RPL requested privilege level 1415RPM revolutions per minute 1416RPN reverse Polish notation 1417RPVST Rapid Per-VLAN Spanning Tree 1418RR random replacement 1419RR round robin 1420RS relay station 1421RSA Rivest, Shamir, [and] Adleman 1422RSC Receive Segment Coalescing 1423RSIP Realm Specific IP 1424RSN Robust Secure Network 1425RSS really simple syndication 1426RSS Receive Side Scaling 1427RSS residual sum of squares 1428RSTP Rapid Spanning Tree Protocol 1429RT real time 1430RTC real time clock 1431RTC real time computing 1432RTF rich text format 1433RTL register transfer language 1434RTL resistor-transistor logic 1435RTL right to left 1436RTOS real time operating system 1437RTP Real-time Transport Protocol 1438RTS request to send 1439RTT round trip time 1440RTTI run-time type information 1441RUP rational unified process 1442RW Rabin-Williams 1443RWM read-write memory 1444RX {receive,receiver} 1445S/PDIF Sony/Philips Digital Interface Format 1446SA security advisory 1447SA security association 1448SA source address 1449SA structured analysis 1450SAAS software as a service 1451SABRE Semi-automated business research environment 1452SACD super audio compact disc 1453SAD security association database 1454SAF-TE SCSI accessed fault-tolerant enclosure 1455SAGE Semi-automated ground environment 1456SAL {service,system} abstraction layer 1457SAM serial access memory 1458SAM sum addressed memory 1459SAML security assertion markup language 1460SAN storage area network 1461SAP service access point 1462SAPIC streamlined advanced programmable interrupt controller 1463SASD structured analysis, structured design 1464SASI Shugart Associates System Interface 1465SASL simple authentication [and] security layer 1466SATA serial advanced technology attachment 1467SAX simple API for XML 1468SB sound blaster 1469SBSA server base system architecture 1470SBU standard build unit 1471SC store conditional 1472SCA source code analyzer 1473SCADA supervisory control and data acquisition 1474SCC single chip cloud 1475SCC source code control 1476SCCP skinny call control protocol 1477SCCS Source Code Control System 1478SCI scalable coherent interface 1479SCI system control interrupt 1480SCIM smart common input method 1481SCM software configuration management 1482SCM source code management 1483SCM storage-class memory 1484SCO synchronous connection orientated 1485SCP secure copy 1486SCP system control processor 1487SCPI system control and power interface 1488SCSI Small Computer System Interface 1489SCTP Stream Control Transmission Protocol 1490SDDC software defined data center 1491SDEI software delegated exception interface 1492SDI symbol deinterleave 1493SDK software development kit 1494SDL Simple Declarative Language 1495SDL Simple Direct-media Layer 1496SDLC {software,system,systems} development life cycle 1497SDN software defined networking 1498SDP Session Description Protocol 1499SDR software defined radio 1500SDRAM synchronous dynamic random access memory 1501SDS software defined storage 1502SDT syntax-directed translation 1503SEA synchronous external abort 1504SEGV segmentation violation 1505SED self-encrypting drive 1506SED stream editor 1507SEMB serial ATA enclosure management bridge 1508SEO search engine optimization 1509SES SCSI enclosure services 1510SFC sequential function chart 1511SFI simple firmware interface 1512SFI software fault isolation 1513SFTP SSH File Transfer Protocol 1514SFTP Serial File Transfer Protocol 1515SFTP Simple File Transfer Protocol 1516SGI Silicon Graphics, Inc 1517SGI software generated interrupt 1518SGMII serial gigabit media independent interface 1519SGPIO serial general purpose input/output 1520SGRAM synchronous graphics random access memory 1521SHA secure hash algorithm 1522SICP structure and interpretation of computer programs 1523SIDH supersingular isogeny Diffie-Hellman 1524SIEM security information and event management 1525SIF source input format 1526SIFS short inter-frame space 1527SIM subscriber identity module 1528SIMD single instruction, multiple data 1529SIMM single inline memory module 1530SIP Session Initiation Protocol 1531SIR signal-to-interference ratio 1532SIR slow infrared 1533SISD single instruction, single data 1534SIV synthetic intialization vector 1535SLAAC stateless address auto-configuration 1536SLC single-level cell 1537SLDRAM synchronous-link dynamic random access memory 1538SLED single large expensive disk 1539SLI scalable link interface 1540SLI scan-line interleave 1541SLIC system license internal code 1542SLOC source lines of code 1543SLRU segmented LRU 1544SMA smart memory access 1545SMAF system management action field 1546SMAP Simple Mail Access Protocol 1547SMAP supervisor mode access prevention 1548SMART self-monitoring analysis and reporting technology 1549SMB Server Message Block 1550SMB system management bus 1551SMBIOS System Management BIOS 1552SMC system management controller 1553SMD storage module device 1554SMEP supervisor mode execution protection 1555SMF single mode fiber 1556SMI structure of management information 1557SMI system management interrupt 1558SMM system management mode 1559SMP serial management protocol 1560SMP symmetric multiprocessing 1561SMR shingled magnetic recording 1562SMR state machine replication 1563SMT simultaneous multithreading 1564SMTP Simple Mail Transfer Protocol 1565SMU system management unit 1566SNA systems network architecture 1567SNAP Sub-Network Access Protocol 1568SNIA Storage Networking Industry Association 1569SNMP Simple Network Management Protocol 1570SNR signal-to-noise ratio 1571SOA service oriented architecture 1572SOAP Simple Object Access Protocol 1573SOC system on chip 1574SOF start of frame 1575SOH start of header 1576SOHO small office/home office 1577SOL serial over LAN 1578SOM system on module 1579SP service pack 1580SP stack pointer 1581SPA storage pool allocator 1582SPAN switched port analyzer 1583SPARC scalable processor architecture 1584SPARQL SPARQL Protocol and RDF Query Language 1585SPD security policy database 1586SPD serial presence detect 1587SPDIF Sony/Philips digital interface format 1588SPI serial peripheral interface 1589SPI stateful packet inspection 1590SPIR standard portable intermediate representation 1591SPL secondary program loader 1592SPL spinlock 1593SPL system interrupt priority level 1594SPMD single process, multiple data 1595SPR special purpose register 1596SPT sectors per track 1597SQA software quality assurance 1598SQCIF sub quarter common intermediate format 1599SQL Structured Query Language 1600SRAM static random access memory 1601SRC sample rate conversion 1602SRP SCSI RDMA protocol 1603SRR shaped round robin 1604SRTP Secure Real-time Transport Protocol 1605SS self-snoop 1606SS stack segment 1607SSA static single assignment 1608SSAP source service access point 1609SSB single-sideband modulation 1610SSC spread spectrum clock 1611SSD solid state drive 1612SSE streaming SIMD extensions 1613SSFDC solid state floppy disc card 1614SSH secure shell 1615SSI server side includes 1616SSID service set identifier 1617SSTP secure socket tunneling protocol 1618SSL secure sockets layer 1619SSP stack smashing protection 1620STC software thermal control 1621STD state transition diagram 1622STM software transactional memory 1623STOMP Streaming Text Oriented Messaging Protocol 1624STP Spanning Tree Protocol 1625STP shielded twisted pair 1626STRG spanning tree root guard 1627SUN Stanford University Network 1628SUS Single Unix Specification 1629SUT system under test 1630SVC switched virtual circuit 1631SVG scalable vector graphics 1632SVGA Super Video Graphics Array 1633SVI {switch,switched} virtual interface 1634SVM secure virtual machine 1635SVM support vector machine 1636SVR System V Release 1637SVS Separate Virtual Space 1638SWF Shockwave Flash 1639SWIG simplified wrapper [and] interface generator 1640SYR symbol timing recovery 1641TA test assertion 1642TA transmitter address 1643TACACS terminal access controller access-control system 1644TAI international atomic time 1645TAO track at once 1646TAOCP The Art of Computer Programming 1647TAP Test Anything Protocol 1648TAS test and set 1649TB terabyte 1650TBNF transitional backus-naur form 1651TCB trace capture buffer 1652TCB trusted computing base 1653TCC thermal control circuit 1654TCL tool command language 1655TCP Transmission Control Protocol 1656TCQ tagged command queueing 1657TDC time [to] digital converter 1658TDD test-driven development 1659TDD time division duplex 1660TDM time division multiplexing 1661TDMA time division multiple access 1662TDOA time difference of arrival 1663TDP thermal design {point,power} 1664TDR time-domain reflectometry 1665TECO Text Editor and Corrector 1666TEE Trusted Execution Environment 1667TFT thin film transistor 1668TFTP Trivial File Transfer Protocol 1669TIAS try it and see 1670TIFF tagged image file format 1671TITS try it to see 1672TK temporal key 1673TKIP Temporal Key Integrity Protocol 1674TLA top level aggregator 1675TLB translation lookaside buffer 1676TLD top level domain 1677TLER time-limited error recovery 1678TLI transport layer interface 1679TLS thread local storage 1680TLS transport layer security 1681TM Turing machine 1682TM thermal monitor 1683TMG transmogrifier 1684TMDS transition minimized differential signaling 1685TMO timeout 1686TOD time of day 1687TOE TCP offload engine 1688TOFU trust on first use 1689TOS terms of service 1690TOS trusted operating system 1691TOS type of service 1692TOTP time-based one time password 1693TP transaction processing 1694TPI tracks per inch 1695TPM transactions per minute 1696TPM trusted platform module 1697TPR task priority register 1698TPS transactions per second 1699TPS transmission parameters signaling 1700TR task register 1701TR token ring 1702TRL timing recovery loop 1703TRNG true random number generator 1704TS terminal services 1705TS time series 1706TS time stamp 1707TS transport stream 1708TSAN Thread Sanitizer 1709TSC time stamp counter 1710TSD time stamp disable 1711TSDB time series database 1712TSL test, set, lock 1713TSO time sharing option 1714TSO TCP segmentation offload 1715TSO Total Store Ordering 1716TSP Time-Stamp Protocol 1717TSP Tunnel Setup Protocol 1718TSP time synchronization protocol 1719TSP traveling salesman problem 1720TSS task state segment 1721TSV tab-separated values 1722TTL time to live 1723TTL transistor-transistor logic 1724TTM translation table maps 1725TTY teletype 1726TU translation unit 1727TUI {terminal,text-based,textual} user interface 1728TX {transmit out,transmitter} 1729TXG transaction group 1730TZ time zone 1731UAC user {access,account} control 1732UAF use-after-free 1733UART universal asynchronous receiver/transmitter 1734UAT user acceptance testing 1735UB undefined behavior 1736UBSAN Undefined Behavior Sanitizer 1737UC uncacheable 1738UCS uniform-cost search 1739UCS unified computing system 1740UCS universal coded character set 1741UDI uniform driver interface 1742UDMA ultra DMA 1743UDO ultra density optical 1744UDP User Datagram Protocol 1745UDS Unix Domain Socket 1746UEFI unified extensible firmware interface 1747UFO UDP fragmentation offload 1748UFS Unix File System 1749UGA universal graphics adapter 1750UI unit interval 1751UI user interface 1752UICC universal integrated circuit card 1753UID unique identifier 1754UID user identifier 1755UL upload 1756UMA uniform memory access 1757UMA upper memory area 1758UMB upper memory block 1759UML unified modeling language 1760UMPC ultra-mobile PC 1761UPNP universal plug and play 1762UPS uninterruptible power supply 1763URI uniform resource identifier 1764URL uniform resource locator 1765URN uniform resource name 1766USART universal synchronous/asynchronous receiver/transmitter 1767USB universal serial bus 1768USWC uncacheable speculative write combining 1769UT unit test 1770UTC coordinated universal time 1771UTF unicode transformation formats 1772UTP unshielded twisted pair 1773UTS UNIX time-sharing 1774UUCP Unix-to-Unix Copy Protocol 1775UUID universally unique identifier 1776UUOC useless use of cat 1777UUT unit under test 1778UX user experience 1779VA vertical alignment 1780VA virtual address 1781VA volt-ampere 1782VAX virtual address extension 1783VB Visual Basic 1784VBR volume boot record 1785VCA variable-gain amplifier 1786VCC common collector voltage 1787VCCP virtual chassis control protocol 1788VCF voltage-controlled filter 1789VCM virtual channel memory 1790VCO voltage-controlled oscillator 1791VCP virtual chassis port 1792VCS version control system 1793VDPAU Video Decode and Presentation API for Unix 1794VES virtual execution system 1795VESA Video Electronics Standards Association 1796VFO variable-frequency oscillator 1797VFS virtual file system 1798VG volume group 1799VGA Video Graphics Array 1800VHDCI very high density cable interconnect 1801VID {VLAN,voltage level} identifier 1802VIM Vi IMproved 1803VIPT virtually indexed, physically tagged 1804VIVT virtually indexed, virtually tagged 1805VLAN virtual local area network 1806VLD variable-length decoding 1807VLIW very long instruction word 1808VLSI very large scale integration 1809VLSM variable length subnet mask 1810VM virtual {machine,memory} 1811VME virtual mode extension 1812VMX vector multimedia extensions 1813VMX virtual machine extensions 1814VNC virtual network computing 1815VOD video on demand 1816VPD vital product data 1817VPN virtual private network 1818VPWS virtual private wire service 1819VR virtual reality 1820VRAM video random access memory 1821VRF virtual routing and forwarding 1822VRM voltage regulator module 1823VROC Virtual RAID On CPU 1824VRRP Virtual Router Redundancy Protocol 1825VSTP VLAN Spanning Tree Protocol 1826VTP VLAN Trunking Protocol 1827VXFS Veritas file system 1828VXVM Veritas volume manager 1829W watt 1830W3C World Wide Web Consortium 1831WAFL write anywhere file layout 1832WAMP Web Application Messaging Protocol 1833WAN wide area network 1834WAP Wireless Application Protocol 1835WAP wireless access point 1836WDM Windows Driver Model 1837WDDM Windows Display Driver Model 1838WDT watchdog timer 1839WEP Wired Equivalent Privacy 1840WFI wait for interrupt 1841WFQ weighted fair queuing 1842WH write hit 1843WHEA Windows hardware error architecture 1844WIFI wireless fidelity 1845WLAN wireless local area network 1846WM write miss 1847WMF Windows meta file 1848WMI Windows Management Instrumentation 1849WOL Wake-on-LAN 1850WOM Wake-on-Modem 1851WOR Wake-on-Ring 1852WORM write once read many 1853WP WordPerfect 1854WP word processor 1855WP write protect 1856WPA Wi-Fi Protected Access 1857WPA2 Wi-Fi Protected Access II 1858WPAD web proxy auto-discovery protocol 1859WPS Wi-Fi Protected Setup 1860WRAM window random access memory 1861WS web services 1862WTC write through caching 1863WTD weighted tail drop 1864WWAN wireless wide area network 1865WWW world wide web 1866WYSIAYG what you see is all you get 1867WYSIWYG what you see is what you get 1868XBAR crossbar 1869XDMCP X Display Manager control protocol 1870XER XML encoding rules 1871XGA Extended Graphics Array 1872XHR XMLHttpRequest 1873XIP execute in place 1874XML Extensible Markup Language 1875XNA XNA's not acronymed 1876XNS Xerox network systems 1877XOR exclusive or 1878XP extreme programming 1879XSI X/Open System Interface 1880XSL extensible stylesheet language 1881XSLT extensible stylesheet language transformations 1882XSS cross site scripting 1883XT extended technology 1884XTACACS extended terminal access controller access-control system 1885XTI X/Open transport interface 1886XUL XML user interface language 1887YACC yet another compiler compiler 1888YAML YAML ain't markup language 1889YANG yet another next generation 1890YAWPFAPR you are welcome; please file a problem report 1891YP Yellow Pages 1892YTD year to date 1893ZAP ZFS attribute processor 1894ZBR zone bit recording 1895ZFOD zero-filled on demand 1896ZFS zettabyte file system 1897ZIF zero insertion force 1898ZIFS zero insertion force socket 1899ZIL ZFS intent log 1900ZMA zone multicast address 1901ZOI zero one infinity 1902ZOI zone of influence 1903ZPL ZFS Posix layer 1904ZVOL ZFS Volume 1905