acronyms.comp revision 1.358
1$NetBSD: acronyms.comp,v 1.358 2023/08/03 02:32:16 gutteridge 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 360DANE DNS-based Authentication of Named Entities 361DAO disk at once 362DAP Directory Access Protocol 363DAT digital audio tape 364DAT dynamic acceleration technology 365DB database 366DBA database administrator 367DBA dynamic bandwidth allocation 368DBB data bus buffer 369DBC design by contract 370DBL dynamic buffer limiting 371DBMS database management system 372DBS database server 373DC data center 374DC direct current 375DCC Direct Client-to-Client 376DCC direct cable connect 377DCD data carrier detect 378DCE data control equipment 379DCE distributed computing environment 380DCIM data center infrastructure management 381DCIM digital camera images 382DCL Digital Command Language 383DCOM distributed component object model 384DCOP Desktop COmmunication Protocol 385DCS data collection systems 386DCT discrete cosine transform 387DCU data cache unit 388DDC display data channel 389DDE dynamic data exchange 390DDI device drivers interface 391DDK device driver kit 392DDL data description language 393DDR double data rate 394DDS direct digital sound 395DDWG Digital Display Working Group 396DE debugging extensions 397DE desktop environment 398DEA data encryption algorithm 399DEC Digital Equipment Corporation 400DEK data encryption key 401DEP data execution prevention 402DER distinguished encoding rules 403DES Data Encryption Standard 404DF don't fragment 405DFA deterministic finite automaton 406DFC data flow control 407DFS depth first search 408DFS distributed file system 409DFSAN Data Flow Sanitizer 410DFT diagnostic function test 411DFT discrete Fourier transform 412DGL data generation language 413DGEMM double precision general matrix multiply 414DH Diffie-Hellman 415DHCP Dynamic Host Configuration Protocol 416DIA dedicated Internet access 417DIB device independent bitmap 418DIFS distributed inter-frame space 419DIMM dual inline memory module 420DIRT design in real time 421DKI driver/kernel interface 422DL diode logic 423DL discrete logarithm 424DL download 425DLCI data link connection identifier 426DLE data link escape 427DLL dynamic link library 428DLNA digital living network alliance 429DLP discrete logarithm problem 430DMA direct memory access 431DMI desktop management interface 432DMS document management system 433DMT discrete multitone modulation 434DMU data management layer 435DNARD Digital network appliance reference design 436DND drag and drop 437DNLC directory name lookup cache 438DNS Domain Name System 439DNSBL Domain Name System Block List 440DNSSEC DNS Security Extensions 441DOE distributed object environment 442DOF data over fibre 443DOM document object model 444DOS denial of service 445DOS disk operating system 446DP DisplayPort 447DPAA data path acceleration architecture 448DPC deferred procedure call 449DPCM differential pulse code modulation 450DPD dead peer detection 451DPDK data plane development kit 452DPI deep packet inspection 453DPI dots per inch 454DPL descriptor privilege level 455DPS Display PostScript 456DPST display power savings technology 457DRAAS disaster recovery as a service 458DRAM dynamic random access memory 459DRBG deterministic random bit generator 460DRI direct rendering infrastructure 461DRM digital rights management 462DRM direct rendering manager 463DRRS display refresh rate switching 464DS debug store 465DS differentiated services 466DS9000 DeathStation 9000 467DS9K DeathStation 9000 468DSA digital signature algorithm 469DSAP destination service access point 470DSB double-sideband modulation 471DSCP differentiated services code point 472DSDT differentiated system descriptor table 473DSF device special file 474DSL dataset and snapshot layer 475DSL digital subscriber line 476DSL domain specific language 477DSLAM digital subscriber line access multiplexer 478DSN delivery status notification 479DSO dynamic shared object 480DSP digital signal processor 481DSSS direct sequence spread spectrum 482DTB device tree blob 483DTC device tree compiler 484DTD document type definition 485DTE data terminal equipment 486DTE dumb terminal emulator 487DTL diode-transistor logic 488DTLS datagram transport layer security 489DTS device tree source 490DTS digital thermal sensor 491DUT device under test 492DVB digital video broadcasting 493DVCS distributed version control system 494DVD digital versatile disc 495DVFS dynamic voltage and frequency scaling 496DVI device independent 497DVI Digital Visual Interface 498DVR digital video recorder 499DWARF Debugging With Attributed Record Formats 500E-XER extended XML encoding rules 501EABI embedded-application binary interface 502EAI Email Address Internationalization 503EAI Enterprise Application Integration 504EAP Extensible Authentication Protocol 505EAPOL EAP over Lan 506EAV entity-attribute-value model 507EAV ethernet audio/video bridging 508EBCDIC Extended Binary Coded Decimal Interchange Code 509EBDA Extended BIOS Data Area 510EBNF extended backus-naur form 511EBR extended boot record 512EC elliptic curve 513ECC elliptic curve cryptography 514ECC error correction code 515ECDH elliptic curve Diffie-Hellman 516ECDL elliptic curve discrete logarithm 517ECDLP elliptic curve discrete logarithm problem 518ECDSA elliptic curve digital signature algorithm 519ECL emitter-coupled logic 520ECN explicit congestion notification 521ECP enhanced capability port 522ECS enhanced chip set 523ECS extended configuration space 524EDAC error detection and correction 525EDAT enhanced dynamic acceleration technology 526EdDSA Edwards curve digital signature algorithm 527EDGE explicit data graph execution 528EDID extended display identification data 529EDO extended data out 530EDS electronical data sheet 531EDSAC electronic delay storage automatic calculator 532EDVAC electronic discrete variable automatic computer 533EEE energy efficient ethernet 534EEE embrace, extend, extinguish 535EEPROM electrically erasable programmable read only memory 536EFI extensible firmware interface 537EFL emitter follower logic 538EFM eight to fourteen modulation 539EFS extent file system 540EGA Enhanced Graphics Adapter 541EGP exterior gateway protocol 542EH extension header 543EIDE enhanced IDE 544EISA extended industry standard architecture 545EINJ error injection table 546ELF executable and linking format 547ELS entry level system 548EMI electro-magnetic interference 549EMP electro-magnetic pulse 550EMR electro-magnetic radiation 551EMACS Editor MACroS 552ENIAC electronic numerical integrator and computer 553EOF end of file 554EOI end of interrupt 555EOIS end of interactive support 556EOL end of life 557EOL end of line 558EOT end of transmission 559EPIC explicitly parallel instruction computing 560EPP enhanced parallel port 561EPRML extended partial response, maximum likelihood 562EPROM erasable programmable read only memory 563EPT extended page tables 564ERC error recovery control 565ERD emergency recovery disk 566ERD entity relationship diagram 567ERE extended regular expression 568ERST error record serialization table 569ESAN Efficiency Sanitizer 570ESB enterprise service bus 571ESDI enhanced small disk interface 572ESDRAM enhanced synchronous dynamic random access memory 573ESI enclosure services interface 574ESS electronic switching system 575ESS extended service set 576ESSID extended service set identifier 577EST enhanced speedstep 578ETL extract, transform, load 579EU execution unit 580EULA end user license agreement 581FAT file allocation table 582FBRAM frame buffer random access memory 583FCIF full common intermediate format 584FCL fiber channel loop 585FCS frame check sequence 586FDC floppy disk controller 587FDD floppy disk drive 588FDDI fiber distributed data interface 589FDE full disk encryption 590FDT flattened device tree 591FEA finite element analysis 592FEC forward error correction 593FET field-effect transistor 594FF finite field 595FF form feed 596FFDH finite-field Diffie-Hellman 597FFH functional fixed hardware 598FFI foreign function interface 599FFM focus follows mouse 600FFS Fast File System 601FFS find first set 602FFT fast Fourier transform 603FG floating gate 604FHRP first hop redundancy protocol 605FHSS frequency hop spread spectrum 606FID frequency identifier 607FIFO first in, first out 608FILO first in, last out 609FIPS Federal Information Processing Standards 610FIR fast infrared 611FLOPS floating [point] operations per second 612FLOSS free/libre/open source software 613FM frequency modulation 614FMR false match rate 615FOSS free/open source software 616FPGA field programmable gate array 617FPM fast page mode 618FPR floating point register 619FPU floating point unit 620FQDN fully qualified domain name 621FRR false rejection rate 622FRU field replaceable unit 623FS file system 624FSB front side bus 625FSCK file system check 626FSF Free Software Foundation 627FSK frequency shift keying 628FSM finite-state machine 629FTA fault tree analysis 630FTL flash translation layer 631FTP File Transfer Protocol 632FTPS File Transfer Protocol Secure 633FTTH fiber to the home 634FUS fast user switching 635FWH firmware hub 636FWS folding white space 637GAL generic array logic 638GARP generic attribute registration protocol 639GAS generic address structure 640GC garbage collector 641GCC GNU Compiler Collection 642GCM Galois counter mode 643GCR group-coded recording 644GDI Graphics Device Interface 645GDT global descriptor table 646GECOS general comprehensive operating supervisor 647GEM graphics environment manager 648GEM graphics execution manager 649GEMM general matrix multiply 650GENA general event notification architecture 651GHC Glasgow Haskell compiler 652GHES generic hardware error source 653GIC generic interrupt controller 654GID group identifier 655GIF graphics interchange format 656GLBP gateway load balancing protocol 657GMCH graphics and memory controller hub 658GNU GNU's Not Unix 659GOP graphics output protocol 660GOT global offset table 661GPE general purpose event 662GPF general protection fault 663GPG GNU Privacy Guard 664GPL [GNU] General Public License 665GPR general purpose register 666GPS generalized processor sharing 667GPT GUID partition table 668GPU graphics processing unit 669GR golden ratio 670GRE generic routing encapsulation 671GRO generic receive offload 672GSI global system interrupt 673GSO generic send offload 674GUI graphical user interface 675GUID globally unique identifier 676GUS Gravis UltraSound 677GVFS git virtual file system 678HA high availability 679HAL hardware abstraction layer 680HAT hashed array tree 681HATEOAS hypermedia as the engine of application state 682HBA host bus adapter 683HCC Home Cable Computer 684HCCA Home Cable Computer Adaptor 685HCF halt and catch fire 686HCI host controller interface 687HCI human-computer interaction 688HCL hardware compatibility list 689HDCP High-bandwidth Digital Content Protection 690HDD hard disk drive 691HDL hardware description language 692HDMI High-Definition Multimedia Interface 693HDTV high-definition television 694HECI host embedded controller interface 695HEST hardware error source table 696HEVC high efficiency video coding 697HF high frequency 698HFM highest frequency mode 699HFS hierarchical file system 700HID human interface device 701HKDF HMAC-based key derivation function 702HKP HTTP Keyserver Protocol 703HLL high-level language 704HMA high memory area 705HMI human-machine interface 706HOOD hierarchical object oriented design 707HOTP HMAC-based one time password 708HP Hewlett-Packard 709HPC high performance computing 710HPD hot plug detection 711HPET high precision event timer 712HSM hardware security module 713HSM hierarchical storage management 714HSRP hot standby router protocol 715HT hyper-threading 716HTC hardware thermal control 717HTCC high temperature co-fired ceramic 718HTML HyperText Markup Language 719HTT hyper-threading technology 720HTTP Hypertext Transfer Protocol 721HTTPS Hypertext Transfer Protocol Secure 722HVM hardware virtual machine 723HVDS High-Voltage Differential Signaling 724HWASAN Hardware-assisted Address Sanitizer 725HZ Hertz 726I2O intelligent input/output 727IA information assurance 728IAAS infrastructure as a service 729IANA Internet Assigned Numbers Authority 730IBC iterated block cipher 731IBM International Business Machines 732IBPI international blinking pattern interpretation 733IBS instruction based sampling 734IBSS independent basic service set 735IC integrated circuit 736ICA independent computer architecture 737ICACLS integrity control access control lists 738ICB Internet Citizen's Band 739ICE in-circuit emulator 740ICE internal compiler error 741ICH I/O controller hub 742ICMP Internet Control Message Protocol 743ICT information and communications technology 744ICW initialization command word 745IDA Intel dynamic acceleration 746IDCMP Intuition direct communication message port 747IDCT inverse discrete cosine transform 748IDE integrated development environment 749IDE integrated drive electronics 750IDPS intrusion detection [and] prevention system 751IDRP inter-domain routing protocol 752IDS intrusion detection system 753IDT interrupt descriptor table 754IE Internet Explorer 755IEC International Electrotechnical Commission 756IEEE Institute of Electrical and Electronics Engineers 757IESG Internet Engineering Steering Group 758IETF Internet Engineering Task Force 759IF intermediate frequency 760IFCM isochronous flow control mode 761IFF Interchange File Format 762IFS internal field separator 763IGD Internet gateway device 764IGMP Internet Group Management Protocol 765IGP interior gateway protocol 766IHV independent hardware vendor 767IKE Internet key exchange 768ILM internal loopback mode 769ILOM integrated lights-out management 770ILP instruction level parallelism 771IM instant messaging 772IME input method editor 773IMAP Internet Message Access Protocol 774IMC integrated memory controller 775IMCR interrupt mode configuration register 776IMR interrupt mask register 777IMS information management system 778IMSI international mobile subscriber identity 779INCITS InterNational Committee for Information Technology Standards 780INODE index node 781IO input/output 782IOCTL input/output control 783IOM input/output managers 784IOMMU input/output memory management unit 785IOT Internet of Things 786IP Internet Protocol 787IP intellectual property 788IPC instructions per cycle 789IPC interprocess communication 790IPCF interprocess communication facility 791IPE integrated programming environment 792IPI intelligent peripheral interface 793IPI interprocessor interrupt 794IPL Initial Program Load 795IPL Interrupt Priority Level 796IPMB Intelligent Platform Management Bus 797IPMI Intelligent Platform Management Interface 798IPNG Internet Protocol, Next Generation 799IPS in-plane switching 800IPS intrusion prevention system 801IPSEC Internet Protocol Security 802IRC Internet Relay Chat 803IRDA infrared data association 804IRDP ICMP Router Discovery Protocol 805IR intermediate representation 806IRQ interrupt request 807IRQL interrupt request level 808IRR interrupt request register 809IRTF Internet Research Task Force 810IS information system 811ISA industry standard architecture 812ISA instruction set architecture 813ISE instant secure erase 814ISDN integrated services digital network 815ISI inter-symbol interference 816ISL initial system load 817ISM industrial, scientific, [and] medical 818ISMS information system management system 819ISN initial serial number 820ISO International Standards Organization 821ISOC Internet Society 822ISP Internet service provider 823ISR in-service register 824ISR interrupt service routine 825IST internal spanning tree 826IST interrupt stack table 827ISV independent software vendor 828IT information technology 829ITB Intel Turbo Boost 830ITIL information technology infrastructure library 831ITP in-target probe 832ITSM IT service management 833IV initialization vector 834IVT interrupt vector table 835JBOD just a bunch of disks 836JCL Job Control Language 837JFET junction [gate] field-effect transistor 838JIT just in time 839JPEG Joint Photographic Experts Group 840JRE Java Runtime Environment 841JSON JavaScript Object Notation 842JTAG joint test action group 843KASAN Kernel Address Sanitizer 844KASLR kernel address space layout randomization 845KB keyboard 846KB kilobyte 847KBD keyboard 848KBD kilobaud 849KCS keyboard controller style 850KEM key encapsulation mechanism 851KLOC thousand lines of code 852KMS kernel-mode setting 853KPI kernel programming interface 854KVA kernel virtual address 855KVM kernel virtual machine 856KVM kernel virtual memory 857KVM keyboard, video, [and] mouse 858L2CAP link layer control and adaptation protocol 859LAG link aggregation group 860LAMP Linux Apache MySQL {Perl,PHP,Python} 861LAN local area network 862LAPIC local advanced programmable interrupt controller 863LAR load access rights 864LBA logical block addressing 865LBNF labeled backus-naur form 866LBS location-based service 867LCD liquid crystal display 868LCP link control protocol 869LDA local delivery agent 870LDAP Lightweight Directory Access Protocol 871LDR light-dependent resistor 872LDT local descriptor table 873LE logical extent 874LED light emitting diode 875LELL low energy link layer 876LER label edge router 877LF line feed 878LF low frequency 879LFM lowest frequency mode 880LFN long file names 881LFO low-frequency oscillation 882LFS log-structured file system 883LFU least frequently used 884LHP loop heat pipe 885LIF logical interchange format 886LIFO last in, first out 887LILO LInux LOader 888LILO last in, last out 889LINT local interrupt 890LIR local Internet registry 891LISP LISt Processor 892LISP Locator/ID Separation Protocol 893LKM {Linux,loadable} kernel module 894LKML Linux kernel mailing list 895LL load linked 896LL/SC load linked/store conditional 897LLC logical link control 898LLD low-level design 899LLDD low-level design document 900LLDP link layer discovery protocol 901LLF low level format 902LLMNR link-local multicast name resolution 903LLVM Low Level Virtual Machine 904LM long mode 905LMCE local machine check exception 906LMI local management interface 907LMM link management mode 908LMP link management protocol 909LNO loop nest optimization 910LOC lines of code 911LOM lights-out management 912LPE Linux performance events 913LPC low pin count 914LPS local positioning system 915LRC longitudinal redundancy check 916LRM left-to-right mark 917LRO Large Receive Offload 918LRO left-to-right override 919LRU least recently used 920LS link state 921LSAN Leak Sanitizer 922LSB Linux standards base 923LSB least significant {bit,byte} 924LSI large scale integration 925LSL load segment limit 926LSM log structured merge 927LSN Large Scale NAT 928LSN log sequence number 929LSO large send offload 930LSR label switch router 931LTCC low temperature co-fired ceramic 932LTO linear tape-open 933LTO link time optimization 934LTR left to right 935LTR load task register 936LTR letter(-sized paper) 937LTS long term support 938LUA Lua Uppercase Accident 939LUN logical unit number 940LV logical volume 941LVM logical volume management 942LVT local vector table 943LVDS Low-Voltage Differential Signaling 944LWP light-weight process 945LZSS Lempel Ziv Storer Szymanski 946LZW Lempel Ziv Welch 947MAB MAC authentication bypass 948MAC mandatory access control 949MAC {media,medium} access control 950MAC message authentication {check,code} 951MADT multiple APIC descriptor table 952MAMR microwave-assisted magnetic recording 953MB megabyte 954MBA multi-boot agent 955MBR master boot record 956MBS megabits per second 957MC memory controller 958MCA machine check architecture 959MCA MicroChannel architecture 960MCC multiversion concurrency control 961MCE machine check exception 962MCGA Multi-Color Graphics Array 963MCH memory controller hub 964MCLAG multi-chassis link aggregation group 965MCM multi-chip module 966MCQ memory controlled queue 967MD machine-dependent 968MD MiniDisc 969MD-SAL model-driven service abstraction layer 970MDA mail delivery agent 971MDA Monochrome Display Adapter 972MDC Management Data Clock 973MDI Medium Dependent Interface 974MDI-X Medium Dependent Interface Crossover 975MDIO Management Data Input/Output 976MDMX MIPS Digital Media eXtension 977MDRAM multibank dynamic random access memory 978MESI modified, exclusive, shared, invalid 979MFC merge from current 980MFC Microsoft Foundation Classes 981MFM modified frequency modulation 982MFU most frequently used 983MGCP media gateway control protocol 984MHU message handling unit 985MI machine-independent 986MI machine interface 987MIB management information base 988MIC message integrity {check,code} 989MID mobile Internet device 990MIDI musical instrument digital interface 991MIF management information format 992MII media independent interface 993MIM man in the middle 994MIMD multiple instruction, multiple data 995MIME Multipurpose Internet Mail Extensions 996MIMO multiple input multiple output 997MIPS million instructions per second 998MIPS Microprocessor without Interlocked Pipeline Stages 999MISD multiple instruction, single data 1000MIT Massachusetts Institute of Technology 1001MITM man in the middle 1002ML machine language 1003ML machine learning 1004ML mailing list 1005ML markup language 1006ML maximum likelihood 1007MLAG multi-chassis link aggregation group 1008MLC multi-level cell 1009MLD multicast listener discovery 1010MLHP micro loop heat pipe 1011MLIR multi-level intermediate representation 1012MLO MMC loader 1013MMC multi-media card 1014MMF multi-mode fiber 1015MMIC monolithic microwave integrated circuit 1016MMIO memory mapped input/output 1017MMORPG massive multiplayer online role playing game 1018MMRP multiple MAC registration protocol 1019MMU memory management unit 1020MMX matrix math extension 1021MMX multimedia extension 1022MMX multiple math extension 1023MO magneto-optical 1024MOESI modified, owned, exclusive, shared, invalid 1025MOF maximum operating frequency 1026MOSFET metal-oxide-semiconductor field-effect transistor 1027MOSI modified, owned, shared, invalid 1028MP multi-platform 1029MP multiplayer 1030MP {multiprocessing,multiprocessor} 1031MPEG moving picture experts group 1032MPI message passing interface 1033MPLS Multiprotocol Label Switching 1034MPP massively parallel processor 1035MPS memory pool system 1036MPS multiprocessor specification 1037MQTT Message Queuing Telemetry Transport 1038MR modem ready 1039MRO method resolution order 1040MRP multiple registration protocol 1041MRU most recently used 1042MS Microsoft 1043MSAN Memory Sanitizer 1044MSB most significant {bit,byte} 1045MSC message sequence chart 1046MSE mean square error 1047MSF minutes seconds frames 1048MSI message signaled interrupt 1049MSI modified, shared, invalid 1050MSR {machine state,model-specific} register 1051MSS maximum segment size 1052MSTP Multiple Spanning Tree Protocol 1053MT machine translation 1054MTA mail transfer agent 1055MTBF mean time between failures 1056MTP media transfer protocol 1057MTRR memory type range register 1058MTTF mean time to failure 1059MTU maximum transmission unit 1060MUA mail user agent 1061MUD multi-user domain 1062MVCC multiversion concurrency control 1063MVR multicast VLAN registration 1064MVRP multiple VLAN registration protocol 1065MWE module width encoding 1066MX mail exchange 1067NACK negative acknowledgement 1068NAK negative acknowledgement 1069NAN neighbor awareness networking 1070NAN not a number 1071NAPT Network Address Port Translation 1072NAS network attached storage 1073NAT network address translation 1074NAV network allocation vector 1075NC numerical control 1076NC-SI network controller sideband interface 1077NCO numerically-controlled oscillator 1078NCP Network Control Protocol 1079NCSI network connectivity status indicator 1080NCQ native command queuing 1081ND neighbor discovery 1082NDFA nondeterministic finite automaton 1083NDIS network driver interface specification 1084NE numeric error 1085NEWS Network extensible Window System 1086NFA nondeterministic finite automaton 1087NFC near-field communication 1088NFCI no functional change intended 1089NFS network file system 1090NFV network function virtualization 1091NHACP NABU HCCA Application Communication Protocol 1092NIA next instruction address 1093NIC network information center 1094NIC network interface card 1095NIDS network intrusion detection system 1096NIP network interface protocol 1097NIPS network intrusion prevention system 1098NIS network information service 1099NIST National Institute of Standards and Technology 1100NLS native language support 1101NMI non-maskable interrupt 1102NNTP Network News Transfer Protocol 1103NMR nonce-misuse resistance 1104NOC network operations center 1105NOP no operation 1106NOS network operating system 1107NP nondeterministic polynomial time 1108NRND not recommended for new designs 1109NRZ non-return to zero 1110NSA nation-state adversary 1111NSA no such agency 1112NSA National Security Agency 1113NTM non-deterministic Turing machine 1114NTP Network Time Protocol 1115NUMA non-uniform memory access 1116NURBS non-uniform rational basis spline 1117NVMM NetBSD Virtual Machine Monitor 1118NVMM non-volatile main memory 1119NVRAM non-volatile random access memory 1120NW not write-through 1121NX no execute 1122OAEP optimal asymmetric encryption padding 1123OAM operations, administration, and {management,maintenance} 1124OBO off by one 1125OBOE off by one error 1126OCL object constraint language 1127OCR optical character recognition 1128ODE offline device environment 1129ODI open data-link interface 1130ODM object data manager 1131ODCM on-demand clock modulation 1132ODMR on-demand mail relay 1133ODT on-die termination 1134OEM original equipment manufacturer 1135OFB output feedback 1136OFDM orthogonal frequency division multiplexing 1137OFET organic field-effect transistor 1138OLAP online analytical processing 1139OLE object linking and embedding 1140OLTP online transaction processing 1141ONFI open nand flash interface 1142OO OpenOffice 1143OO object oriented 1144OOB out of band 1145OOE out of order execution 1146OOM out of memory 1147OOO OpenOffice.org 1148OOP object oriented programming 1149OOPS object oriented programming systems 1150OOSE object oriented software engineering 1151OPM operations per minute 1152OPS operations per second 1153OQL Object Query Language 1154ORB object request broker 1155ORM object-relational mapping 1156OS operating system 1157OSD object-based storage device 1158OSD open source definition 1159OSF open software foundation 1160OSI Open Source Initiative 1161OSI open systems interconnection 1162OSPF open shortest path first 1163OSPM OS power management 1164OSS open sound system 1165OSS open source software 1166OSVW operating system visible workarounds 1167OTP one time password 1168OTP open telecom platform 1169OU organizational unit 1170OUI organizationally unique identifier 1171OWASP Open Web Application Security Project 1172OWL Web Ontology Language 1173P2P PCI to PCI 1174P2P peer to peer 1175PA phase accumulator 1176PA physical address 1177PAAS platform as a service 1178PAC phase-amplitude converter 1179PAE physical address extension 1180PAGP port aggregation protocol 1181PAL phase alternating line 1182PAL programmable array logic 1183PAM pluggable authentication modules 1184PAM pulse amplitude modulation 1185PAP password authentication protocol 1186PAT page attribute table 1187PAT port address translation 1188PATA parallel ATA 1189PAX portable archive exchange 1190PBE pending break encoding 1191PBE programming by example 1192PBR partition boot record 1193PBX private branch exchange 1194PC personal computer 1195PC program counter 1196PCB printed circuit board 1197PCB process control block 1198PCB Protocol Control Block 1199PCBC propagating cipher block chaining 1200PCC Portable C Compiler 1201PCD page-level cache disable 1202PCE path computation element 1203PCE performance-monitor counter enable 1204PCEP Path Computation Element Protocol 1205PCH platform controller hub 1206PCI peripheral component interconnect 1207PCM phase change memory 1208PCM pulse code modulation 1209PCMCIA Personal Computer Memory Card International Association 1210PCP Port Control Protocol 1211PD public domain 1212PDA personal digital assistant 1213PDA pushdown automaton 1214PDAG propositional directed acyclic graph 1215PDB power distribution board 1216PDF portable document format 1217PDM pulse-duration modulation 1218PDN pull-down network 1219PDP page {descriptor,directory} page 1220PDS product data sheet 1221PDU protocol data unit 1222PE protection enable 1223PE provider edge 1224PE portable executable 1225PEAP Protected EAP 1226PECI platform environment control interface 1227PEP protocol extension protocol 1228PER packed encoding rules 1229PFS perfect forward secrecy 1230PGAS partitioned global address space 1231PGE page global enable 1232PGO profile guided optimization 1233PGP Pretty Good Privacy 1234PHB PCI host bridge 1235PHP PHP: Hypertext Preprocessor 1236PIC performance instrumentation counters 1237PIC position independent code 1238PIC programmable interrupt controller 1239PICNIC problem in chair, not in computer 1240PID process id 1241PIE position independent executable 1242PIL Priority Interrupt Level 1243PIM personal information manager 1244PIM platform-independent model 1245PIO programmed input/output 1246PIPT physically indexed, physically tagged 1247PIR private information retrieval 1248PIQ prefetch input queue 1249PIT programmable interrupt timer 1250PIV personal identity verification 1251PIX Private Internet eXchange 1252PKCS public-key cryptography standards 1253PKI public key infrastructure 1254PLC programmable logic controller 1255PLD programmable logic device 1256PLL phase locked loop 1257PLRU pseudo LRU 1258PLT procedure linkage table 1259PLTM package level thermal management 1260PM power management 1261PM {phase,pulse} modulation 1262PMC performance monitoring counters 1263PME power management event 1264PMEG page map entry group 1265PMI performance monitoring infrastructure 1266PMI platform management interrupt 1267PMIC power management integrated circuit 1268PMIO port-mapped input/output 1269PMT photo-multiplier tube 1270PMU performance monitoring units 1271PMU power management unit 1272PNG portable network graphics 1273PNP plug and play 1274POE power over ethernet 1275POF probability of failure 1276POP Post Office Protocol 1277POP power on password 1278POR plan of record 1279POSIX Portable Operating System Interface [for Unix] 1280POST power on self test 1281POTS plain old telephone system 1282POWER Performance Optimization With Enhanced RISC 1283POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1284PP pair programming 1285PPB PCI [to] PCI bridge 1286PPC PowerPC 1287PPC Power Performance Computing 1288PPI pixels per inch 1289PPM pages per minute 1290PPP Point-to-Point Protocol 1291PPPOA Point-to-Point Protocol over ATM 1292PPPOE Point-to-Point Protocol over Ethernet 1293PPR processor programming reference 1294PPT powerpoint 1295PPT punched paper tape 1296PPU physics processing unit 1297PQC post-quantum cryptography 1298PRAM Parameter RAM 1299PRBS pseudorandom bit sequence 1300PRG pseudorandom generator 1301PRF pseudorandom function [family] 1302PRML partial response, maximum likelihood 1303PRN pseudorandom {noise,number} 1304PRNG pseudorandom number generator 1305PROM programmable read only memory 1306PRP pseudorandom permutation 1307PRU Programmable Realtime Unit 1308PS PostScript 1309PSD power spectral density 1310PSE page size extensions 1311PSK phase shift keying 1312PSK pre-shared key 1313PSTN public switched telephone network 1314PSW program status word 1315PTE page table entry 1316PTLA pseudo top level aggregator 1317PTP page table page 1318PTV perceived target value 1319PU processing unit 1320PUC personal unblocking code 1321PUN physical unit number 1322PV physical volume 1323PVC permanent virtual circuit 1324PVG physical volume group 1325PVI protected-mode virtual interrupt 1326PVRST Per-VLAN rapid spanning tree 1327PVST Per-VLAN Spanning Tree 1328PWM pulse width modulation 1329PXE preboot execution environment 1330QA quality assurance 1331QAM quadrature amplitude modulation 1332QAM quality assurance management 1333QBE query by example 1334QC quality control 1335QDI quasi delay insensitive 1336QCIF quarter common intermediate format 1337QOI quality of implementation 1338QOI quick order interface 1339QOS quality of service 1340QVL qualified vendor list 1341R/O read only 1342R/W read/write 1343RA receiver address 1344RA remote assistance 1345RA resource affinity 1346RA router advertisement 1347RAD rapid application development 1348RADIUS remote authentication dial-in user service 1349RAID redundant array of {independent,inexpensive} disks 1350RAII resource acquisition is initialization 1351RAM random access memory 1352RAS reliability, availability and serviceability 1353RAS remote access service 1354RAS restartable atomic sequence 1355RAS row address strobe 1356RBF radial basis function 1357RBL reputation block list 1358RBL real-time blackhole list 1359RBNF routing backus-naur form 1360RBT red-black tree 1361RC release candidate 1362RC remote control 1363RC run commands 1364RCS Revision Control System 1365RCU read, copy, update 1366RDB Rigid Disk Block 1367RDBMS relational database management system 1368RDF Resource Description Framework 1369RDM relational data model 1370RDMA remote direct memory access 1371RDP remote desktop protocol 1372RDRAM Rambus DRAM 1373RE regular expression 1374REPL read, evaluate, print, loop 1375REST representational state transfer 1376RF radio frequency 1377RFB remote frame buffer 1378RFI radio frequency interference 1379RFO request for ownership 1380RFU reserved for future use 1381RGB red green blue 1382RGBA red green blue alpha 1383RGMII reduced gigabit media independent interface 1384RH read hit 1385RHEL Red Hat Enterprise Linux 1386RHL Red Hat Linux 1387RIB routing information base 1388RIFF Resource Interchange File Format 1389RIP Raster Image Processor 1390RIP Routing Information Protocol 1391RIR regional Internet registry 1392RISC reduced instruction set {computer,computing} 1393RKM ROM Kernel Manual 1394RLE run length encoding 1395RLL run length limited 1396RLO right-to-left override 1397RM read miss 1398RMCP Remote Management Control Protocol 1399RMI remote method invocation 1400RMO Relaxed Memory Ordering 1401RMPM rapid memory power management 1402RMS root mean square 1403RMW read, modify, write 1404RNG random number generator 1405ROM read only memory 1406ROP return-oriented programming 1407RPC remote procedure call 1408RPG Report Program Generator 1409RPKI resource PKI 1410RPL requested privilege level 1411RPM revolutions per minute 1412RPN reverse Polish notation 1413RPVST Rapid Per-VLAN Spanning Tree 1414RR random replacement 1415RR round robin 1416RS relay station 1417RSA Rivest, Shamir, [and] Adleman 1418RSC Receive Segment Coalescing 1419RSIP Realm Specific IP 1420RSN Robust Secure Network 1421RSS really simple syndication 1422RSS Receive Side Scaling 1423RSS residual sum of squares 1424RSTP Rapid Spanning Tree Protocol 1425RT real time 1426RTC real time clock 1427RTC real time computing 1428RTF rich text format 1429RTL register transfer language 1430RTL resistor-transistor logic 1431RTL right to left 1432RTOS real time operating system 1433RTP Real-time Transport Protocol 1434RTS request to send 1435RTT round trip time 1436RTTI run-time type information 1437RUP rational unified process 1438RW Rabin-Williams 1439RWM read-write memory 1440RX {receive,receiver} 1441S/PDIF Sony/Philips Digital Interface Format 1442SA security advisory 1443SA security association 1444SA source address 1445SA structured analysis 1446SAAS software as a service 1447SABRE Semi-automated business research environment 1448SACD super audio compact disc 1449SAD security association database 1450SAF-TE SCSI accessed fault-tolerant enclosure 1451SAGE Semi-automated ground environment 1452SAL {service,system} abstraction layer 1453SAM serial access memory 1454SAM sum addressed memory 1455SAML security assertion markup language 1456SAN storage area network 1457SAP service access point 1458SAPIC streamlined advanced programmable interrupt controller 1459SASD structured analysis, structured design 1460SASI Shugart Associates System Interface 1461SASL simple authentication [and] security layer 1462SATA serial advanced technology attachment 1463SAX simple API for XML 1464SB sound blaster 1465SBSA server base system architecture 1466SBU standard build unit 1467SC store conditional 1468SCA source code analyzer 1469SCADA supervisory control and data acquisition 1470SCC single chip cloud 1471SCC source code control 1472SCCP skinny call control protocol 1473SCCS Source Code Control System 1474SCI scalable coherent interface 1475SCI system control interrupt 1476SCIM smart common input method 1477SCM software configuration management 1478SCM source code management 1479SCM storage-class memory 1480SCO synchronous connection orientated 1481SCP secure copy 1482SCP system control processor 1483SCPI system control and power interface 1484SCSI Small Computer System Interface 1485SCTP Stream Control Transmission Protocol 1486SDDC software defined data center 1487SDEI software delegated exception interface 1488SDI symbol deinterleave 1489SDK software development kit 1490SDL Simple Declarative Language 1491SDL Simple Direct-media Layer 1492SDLC {software,system,systems} development life cycle 1493SDN software defined networking 1494SDP Session Description Protocol 1495SDR software defined radio 1496SDRAM synchronous dynamic random access memory 1497SDS software defined storage 1498SDT syntax-directed translation 1499SEA synchronous external abort 1500SEGV segmentation violation 1501SED self-encrypting drive 1502SED stream editor 1503SEMB serial ATA enclosure management bridge 1504SEO search engine optimization 1505SES SCSI enclosure services 1506SFC sequential function chart 1507SFI simple firmware interface 1508SFI software fault isolation 1509SFTP SSH File Transfer Protocol 1510SFTP Serial File Transfer Protocol 1511SFTP Simple File Transfer Protocol 1512SGI Silicon Graphics, Inc 1513SGI software generated interrupt 1514SGMII serial gigabit media independent interface 1515SGPIO serial general purpose input/output 1516SGRAM synchronous graphics random access memory 1517SHA secure hash algorithm 1518SICP structure and interpretation of computer programs 1519SIDH supersingular isogeny Diffie-Hellman 1520SIEM security information and event management 1521SIF source input format 1522SIFS short inter-frame space 1523SIM subscriber identity module 1524SIMD single instruction, multiple data 1525SIMM single inline memory module 1526SIP Session Initiation Protocol 1527SIR signal-to-interference ratio 1528SIR slow infrared 1529SISD single instruction, single data 1530SIV synthetic intialization vector 1531SLAAC stateless address auto-configuration 1532SLC single-level cell 1533SLDRAM synchronous-link dynamic random access memory 1534SLED single large expensive disk 1535SLI scalable link interface 1536SLI scan-line interleave 1537SLIC system license internal code 1538SLOC source lines of code 1539SLRU segmented LRU 1540SMA smart memory access 1541SMAF system management action field 1542SMAP Simple Mail Access Protocol 1543SMAP supervisor mode access prevention 1544SMART self-monitoring analysis and reporting technology 1545SMB Server Message Block 1546SMB system management bus 1547SMBIOS System Management BIOS 1548SMC system management controller 1549SMD storage module device 1550SMEP supervisor mode execution protection 1551SMF single mode fiber 1552SMI structure of management information 1553SMI system management interrupt 1554SMM system management mode 1555SMP serial management protocol 1556SMP symmetric multiprocessing 1557SMR shingled magnetic recording 1558SMR state machine replication 1559SMT simultaneous multithreading 1560SMTP Simple Mail Transfer Protocol 1561SMU system management unit 1562SNA systems network architecture 1563SNAP Sub-Network Access Protocol 1564SNIA Storage Networking Industry Association 1565SNMP Simple Network Management Protocol 1566SNR signal-to-noise ratio 1567SOA service oriented architecture 1568SOAP Simple Object Access Protocol 1569SOC system on chip 1570SOF start of frame 1571SOH start of header 1572SOHO small office/home office 1573SOL serial over LAN 1574SOM system on module 1575SP service pack 1576SP stack pointer 1577SPA storage pool allocator 1578SPAN switched port analyzer 1579SPARC scalable processor architecture 1580SPARQL SPARQL Protocol and RDF Query Language 1581SPD security policy database 1582SPD serial presence detect 1583SPDIF Sony/Philips digital interface format 1584SPI serial peripheral interface 1585SPI stateful packet inspection 1586SPIR standard portable intermediate representation 1587SPL secondary program loader 1588SPL spinlock 1589SPL system interrupt priority level 1590SPMD single process, multiple data 1591SPR special purpose register 1592SPT sectors per track 1593SQA software quality assurance 1594SQCIF sub quarter common intermediate format 1595SQL Structured Query Language 1596SRAM static random access memory 1597SRC sample rate conversion 1598SRP SCSI RDMA protocol 1599SRR shaped round robin 1600SRTP Secure Real-time Transport Protocol 1601SS self-snoop 1602SS stack segment 1603SSA static single assignment 1604SSAP source service access point 1605SSB single-sideband modulation 1606SSC spread spectrum clock 1607SSD solid state drive 1608SSE streaming SIMD extensions 1609SSFDC solid state floppy disc card 1610SSH secure shell 1611SSI server side includes 1612SSID service set identifier 1613SSTP secure socket tunneling protocol 1614SSL secure sockets layer 1615SSP stack smashing protection 1616STC software thermal control 1617STD state transition diagram 1618STM software transactional memory 1619STOMP Streaming Text Oriented Messaging Protocol 1620STP Spanning Tree Protocol 1621STP shielded twisted pair 1622STRG spanning tree root guard 1623SUN Stanford University Network 1624SUS Single Unix Specification 1625SUT system under test 1626SVC switched virtual circuit 1627SVG scalable vector graphics 1628SVGA Super Video Graphics Array 1629SVI {switch,switched} virtual interface 1630SVM secure virtual machine 1631SVM support vector machine 1632SVR System V Release 1633SVS Separate Virtual Space 1634SWF Shockwave Flash 1635SWIG simplified wrapper [and] interface generator 1636SYR symbol timing recovery 1637TA test assertion 1638TA transmitter address 1639TACACS terminal access controller access-control system 1640TAI international atomic time 1641TAO track at once 1642TAOCP The Art of Computer Programming 1643TAP Test Anything Protocol 1644TAS test and set 1645TB terabyte 1646TBNF transitional backus-naur form 1647TCB trace capture buffer 1648TCB trusted computing base 1649TCC thermal control circuit 1650TCL tool command language 1651TCP Transmission Control Protocol 1652TCQ tagged command queueing 1653TDC time [to] digital converter 1654TDD test-driven development 1655TDD time division duplex 1656TDM time division multiplexing 1657TDMA time division multiple access 1658TDOA time difference of arrival 1659TDP thermal design {point,power} 1660TDR time-domain reflectometry 1661TECO Text Editor and Corrector 1662TEE Trusted Execution Environment 1663TFT thin film transistor 1664TFTP Trivial File Transfer Protocol 1665TIAS try it and see 1666TIFF tagged image file format 1667TITS try it to see 1668TK temporal key 1669TKIP Temporal Key Integrity Protocol 1670TLA top level aggregator 1671TLB translation lookaside buffer 1672TLD top level domain 1673TLER time-limited error recovery 1674TLI transport layer interface 1675TLS thread local storage 1676TLS transport layer security 1677TM Turing machine 1678TM thermal monitor 1679TMG transmogrifier 1680TMDS transition minimized differential signaling 1681TMO timeout 1682TOD time of day 1683TOE TCP offload engine 1684TOFU trust on first use 1685TOS terms of service 1686TOS trusted operating system 1687TOS type of service 1688TOTP time-based one time password 1689TP transaction processing 1690TPI tracks per inch 1691TPM transactions per minute 1692TPM trusted platform module 1693TPR task priority register 1694TPS transactions per second 1695TPS transmission parameters signaling 1696TR task register 1697TR token ring 1698TRL timing recovery loop 1699TRNG true random number generator 1700TS terminal services 1701TS time series 1702TS time stamp 1703TS transport stream 1704TSAN Thread Sanitizer 1705TSC time stamp counter 1706TSD time stamp disable 1707TSDB time series database 1708TSL test, set, lock 1709TSO time sharing option 1710TSO TCP segmentation offload 1711TSO Total Store Ordering 1712TSP Time-Stamp Protocol 1713TSP Tunnel Setup Protocol 1714TSP time synchronization protocol 1715TSP traveling salesman problem 1716TSS task state segment 1717TSV tab-separated values 1718TTL time to live 1719TTL transistor-transistor logic 1720TTM translation table maps 1721TTY teletype 1722TU translation unit 1723TUI {terminal,text-based,textual} user interface 1724TX {transmit out,transmitter} 1725TXG transaction group 1726TZ time zone 1727UAC user {access,account} control 1728UAF use-after-free 1729UART universal asynchronous receiver/transmitter 1730UAT user acceptance testing 1731UB undefined behavior 1732UBSAN Undefined Behavior Sanitizer 1733UC uncacheable 1734UCS uniform-cost search 1735UCS unified computing system 1736UCS universal coded character set 1737UDI uniform driver interface 1738UDMA ultra DMA 1739UDO ultra density optical 1740UDP User Datagram Protocol 1741UDS Unix Domain Socket 1742UEFI unified extensible firmware interface 1743UFO UDP fragmentation offload 1744UFS Unix File System 1745UGA universal graphics adapter 1746UI unit interval 1747UI user interface 1748UICC universal integrated circuit card 1749UID unique identifier 1750UID user identifier 1751UL upload 1752UMA uniform memory access 1753UMA upper memory area 1754UMB upper memory block 1755UML unified modeling language 1756UMPC ultra-mobile PC 1757UPNP universal plug and play 1758UPS uninterruptible power supply 1759URI uniform resource identifier 1760URL uniform resource locator 1761URN uniform resource name 1762USART universal synchronous/asynchronous receiver/transmitter 1763USB universal serial bus 1764USWC uncacheable speculative write combining 1765UT unit test 1766UTC coordinated universal time 1767UTF unicode transformation formats 1768UTP unshielded twisted pair 1769UTS UNIX time-sharing 1770UUCP Unix-to-Unix Copy Protocol 1771UUID universally unique identifier 1772UUOC useless use of cat 1773UUT unit under test 1774UX user experience 1775VA vertical alignment 1776VA virtual address 1777VA volt-ampere 1778VAX virtual address extension 1779VB Visual Basic 1780VBR volume boot record 1781VCA variable-gain amplifier 1782VCC common collector voltage 1783VCCP virtual chassis control protocol 1784VCF voltage-controlled filter 1785VCM virtual channel memory 1786VCO voltage-controlled oscillator 1787VCP virtual chassis port 1788VCS version control system 1789VDPAU Video Decode and Presentation API for Unix 1790VES virtual execution system 1791VESA Video Electronics Standards Association 1792VFO variable-frequency oscillator 1793VFS virtual file system 1794VG volume group 1795VGA Video Graphics Array 1796VHDCI very high density cable interconnect 1797VID {VLAN,voltage level} identifier 1798VIM Vi IMproved 1799VIPT virtually indexed, physically tagged 1800VIVT virtually indexed, virtually tagged 1801VLAN virtual local area network 1802VLD variable-length decoding 1803VLIW very long instruction word 1804VLSI very large scale integration 1805VLSM variable length subnet mask 1806VM virtual {machine,memory} 1807VME virtual mode extension 1808VMX vector multimedia extensions 1809VMX virtual machine extensions 1810VNC virtual network computing 1811VOD video on demand 1812VPD vital product data 1813VPN virtual private network 1814VPWS virtual private wire service 1815VR virtual reality 1816VRAM video random access memory 1817VRF virtual routing and forwarding 1818VRM voltage regulator module 1819VROC Virtual RAID On CPU 1820VRRP Virtual Router Redundancy Protocol 1821VSTP VLAN Spanning Tree Protocol 1822VTP VLAN Trunking Protocol 1823VXFS Veritas file system 1824VXVM Veritas volume manager 1825W watt 1826W3C World Wide Web Consortium 1827WAFL write anywhere file layout 1828WAMP Web Application Messaging Protocol 1829WAN wide area network 1830WAP Wireless Application Protocol 1831WAP wireless access point 1832WDM Windows Driver Model 1833WDDM Windows Display Driver Model 1834WDT watchdog timer 1835WEP Wired Equivalent Privacy 1836WFI wait for interrupt 1837WFQ weighted fair queuing 1838WH write hit 1839WHEA Windows hardware error architecture 1840WIFI wireless fidelity 1841WLAN wireless local area network 1842WM write miss 1843WMF Windows meta file 1844WMI Windows Management Instrumentation 1845WOL Wake-on-LAN 1846WOM Wake-on-Modem 1847WOR Wake-on-Ring 1848WORM write once read many 1849WP WordPerfect 1850WP word processor 1851WP write protect 1852WPA Wi-Fi Protected Access 1853WPA2 Wi-Fi Protected Access II 1854WPAD web proxy auto-discovery protocol 1855WPS Wi-Fi Protected Setup 1856WRAM window random access memory 1857WS web services 1858WTC write through caching 1859WTD weighted tail drop 1860WWAN wireless wide area network 1861WWW world wide web 1862WYSIAYG what you see is all you get 1863WYSIWYG what you see is what you get 1864XBAR crossbar 1865XDMCP X Display Manager control protocol 1866XER XML encoding rules 1867XGA Extended Graphics Array 1868XHR XMLHttpRequest 1869XIP execute in place 1870XML Extensible Markup Language 1871XNA XNA's not acronymed 1872XNS Xerox network systems 1873XOR exclusive or 1874XP extreme programming 1875XSI X/Open System Interface 1876XSL extensible stylesheet language 1877XSLT extensible stylesheet language transformations 1878XSS cross site scripting 1879XT extended technology 1880XTACACS extended terminal access controller access-control system 1881XTI X/Open transport interface 1882XUL XML user interface language 1883YACC yet another compiler compiler 1884YAML YAML ain't markup language 1885YANG yet another next generation 1886YAWPFAPR you are welcome; please file a problem report 1887YP Yellow Pages 1888YTD year to date 1889ZAP ZFS attribute processor 1890ZBR zone bit recording 1891ZFOD zero-filled on demand 1892ZFS zettabyte file system 1893ZIF zero insertion force 1894ZIFS zero insertion force socket 1895ZIL ZFS intent log 1896ZMA zone multicast address 1897ZOI zero one infinity 1898ZOI zone of influence 1899ZPL ZFS Posix layer 1900ZVOL ZFS Volume 1901