acronyms.comp revision 1.348
1$NetBSD: acronyms.comp,v 1.348 2023/03/15 01:25:02 jschauma Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABE attribute-based encryption 8ABI application binary interface 9ABNF augmented backus-naur form 10ABR available bit rate 11ABRT automatic bug reporting tool 12AC alternating current 13ACI adjacent channel interferer 14ACID atomicity, consistency, isolation, durability 15ACK Amsterdam compiler kit 16ACK acknowledgement 17ACL access control list 18ACL active current loop 19ACL asynchronous connection less 20ACP auxiliary control {process,program} 21ACPI advanced configuration and power interface 22ACS access control set 23ACU automatic calling unit 24ADB Apple desktop bus 25ADC analog [to] digital converter 26ADD acronym driven development 27ADDDC adaptive double DRAM device correction 28ADO active data objects 29ADP automatic data processing 30ADPCM adaptive differential pulse code modulation 31ADS alternate data stream 32ADSL asymmetric digital subscriber line 33ADT abstract data type 34AEAD authenticated encryption with associated data 35AEDC advanced error detection and correction 36AER advanced error reporting 37AES Advanced Encryption Standard 38AFP Apple Filing Protocol 39AFS Andrew File System 40AGC automatic gain control 41AGP accelerated graphics port 42AI analog input 43AI artificial intelligence 44AL access list 45AL active link 46ALE address latch enable 47ALS ambient light sensor 48ALSA advanced Linux sound architecture 49ALU arithmetic and logical unit 50ALUA asymmetric logical unit access 51AM access method 52AM alignment mask 53AM amplitude modulation 54AMD Advanced Micro Devices Inc 55AMDD Agile model-driven development 56AMI alternate mark inversion 57AMP asymmetric multiprocessing 58AMQP advanced message queuing protocol 59AMT active management technology 60AN Arabic number 61ANR application not responding 62ANSI American National Standards Institute 63AO analog output 64AOC add-on card 65AOL Alert-on-LAN 66AOS add or subtract 67AOT ahead of time 68AP access point 69AP application processor 70APFS Apple file system 71API application programming interface 72APEI ACPI platform error interface 73APIC advanced programmable interrupt controller 74APIPA automatic private IP addressing 75APM advanced power management 76APM application performance management 77APU accelerated processing unit 78APT advanced persistent threat 79AQM active queue management 80ARAT always running APIC timer 81ARC adaptive replacement cache 82ARC Advanced RISC Computing 83ARC automatic reference counting 84ARM Advanced RISC Machines 85ARP Address Resolution Protocol 86ARPA Advanced Research Projects Agency 87ARQ automatic repeat request 88ARR address range register 89ARU audio response unit 90AS autonomous system 91ASA Adaptive Security Appliance 92ASAN Address Sanitizer 93ASC advanced smart cache 94ASCII American Standard Code for Information Interchange 95ASD agile software development 96ASE advanced software environment 97ASF alert standard format 98ASIC application-specific integrated circuit 99ASK amplitude shift keying 100ASLR address space layout randomization 101ASN autonomous system number 102ASP active server pages 103ASP auxiliary storage pool 104ASPM active state power management 105ASQ automated software quality 106ASR address space register 107ASR Apple software restore 108AST abstract syntax tree 109AST asynchronous system trap 110AT access time 111AT advanced technology 112ATA advanced technology attachment 113ATAPI advanced technology attachment packet interface 114ATC address translation cache 115ATF ARM trusted firmware 116ATF automated testing framework 117ATM asynchronous transfer mode 118ATX advanced technology extended 119AV anti virus 120AVB audio video bridging 121AVL Adelson-Velsky-Landis 122AVX advanced vector extensions 123AWDL Apple wireless direct link 124BA byte align 125BAL basic assembly language 126BAR base address register 127BBS bulletin board system 128BCC blind carbon copy 129BCD binary coded decimal 130BCH boot console handler 131BCR byte count register 132BCS base configuration space 133BD baud 134BDD binary decision diagram 135BDI bit deinterleave 136BDUF big design up front 137BEDO burst extended data output 138BER basic encoding rules 139BER bit error {rate,ratio} 140BERT boot error record table 141BFD bidirectional forwarding detection 142BFD binary {file,format} descriptor 143BFKL big fscking kernel lock 144BFS breadth-first search 145BFT binary file transfer 146BGA ball grid array 147BGP Border Gateway Protocol 148BGPSEC BGP Security 149BIND Berkeley Internet Name Daemon 150BIOS Basic Input/Output System 151BIOS built-in operating system 152BIST built-in self-test 153BIU bus interface unit 154BKDG BIOS and kernel developer's guide 155BLAS basic linear algebra subprograms 156BLC back light control 157BLE Bluetooth low energy 158BLOB binary large object 159BM bus master 160BMC baseboard management controller 161BMP basic multilingual plane 162BMP bitmap image file 163BMIC bus master interface controller 164BN boundary neutral 165BNF Backus-Naur form 166BO binary output 167BOF beginning of file 168BOM beginning of message 169BOM byte order mark 170BP base pointer 171BP boot processor 172BPB BIOS parameter block 173BPDU bridge protocol data unit 174BPF Berkeley Packet Filter 175BPI bits per inch 176BPM business process modelling 177BPS bits per second 178BPSK binary phase shift keying 179BQP bounded-error quantum polynomial time 180BQS Berkeley quality software 181BRE basic regular expression 182BS backspace 183BS binary sequence 184BSA basic service area 185BSD Berkeley Software Distribution 186BSDP Boot Service Discovery Protocol 187BSF bit scan forward 188BSOD blue screen of death 189BSP binary space partition 190BSP board support package 191BSP bootstrap processor 192BSR bit scan reverse 193BSS basic service set 194BSS block started by symbol 195BSSID basic service set identifier 196BT BitTorrent 197BT Bluetooth 198BT bit test 199BTC bit test [and] complement 200BTM bus transport mechanism 201BTR bit test [and] reset 202BTS bit test [and] set 203BTS bug tracking system 204BW bandwidth 205BWM block-write mode 206BUAG big ugly ASCII graphic 207CA certificate authority 208CACLS change access control lists 209CAD computer-aided design 210CAM computer assisted manufacturing 211CAM conditional access module 212CAM content addressable memory 213CARP Common Address Redundancy Protocol 214CAS column address strobe 215CAS compare and swap 216CAS computer algebra system 217CASE computer aided software engineering 218CAU control access unit 219CAV constant angular velocity 220CBC cipher block chaining 221CBR constant bit rate 222CC carbon copy 223CCC Chaos Computer Club 224CCD charge coupled device 225CCI co-channel interferer 226CCNUMA cache-coherent non-uniform memory access 227CCTL command completion time limit 228CD cache disable 229CD compact disc 230CDDA compact disc digital audio 231CDL compiler description language 232CDMA code division multiple access 233CDN content delivery network 234CDP Cisco Discovery Protocol 235CDRAM cache dynamic random access memory 236CER canonical encoding rules 237CE customer edge 238CF compact flash 239CFB cipher feedback 240CFG context-free grammar 241CFG control-flow graph 242CFI control-flow integrity 243CG control gate 244CGA Color Graphics Adapter 245CGI common gateway interface 246CGN Carrier-Grade NAT 247CHAP Challenge-Handshake Authentication Protocol 248CHFS chip file system 249CHS cylinder/head/sector 250CI continuous integration 251CI {common,component} interface 252CIA confidentiality, integrity, availability 253CIDR Classless Inter-Domain Routing 254CIF common intermediate format 255CIFS Common Internet File System 256CIL common intermediate language 257CIR carrier-to-interference ratio 258CIS contact image sensor 259CISC complex instruction set {computer,computing} 260CJK Chinese, Japanese, [and] Korean 261CLF common log format 262CLI command line interface 263CLI common language infrastructure 264CLR common language runtime 265CLS common language specification 266CLTT closed loop thermal throttling 267CLUT color look-up table 268CLV constant linear velocity 269CM configuration management 270CMA concert multithread architecture 271CMC chassis management controller 272CMC corrected machine check 273CMC certificate management over CMS 274CMS {configuration,content,course} management system 275CMS cryptographic message syntax 276CMI control {management,method} interface 277CMOS complementary metal-oxide-semiconductor 278CMP chip multi-processing 279CMS content management system 280CMYK cyan magenta yellow black 281CN {common,canonical} name 282CNC computer numerical control 283CNR carrier-to-noise ratio 284COA change of authority 285COF current operating frequency 286COFDM coded orthogonal frequency division multiplexing 287COFF common object file format 288COM component object model 289COM computer on module 290COMA cache-only memory architecture 291CORBA common object request broker architecture 292COS class of service 293COW copy-on-write 294CP continuous pilot 295CPA chosen-plaintext attack 296CPB core performance boost 297CPC central processor complex 298CPC cpu performance counters 299CPE common phase error 300CPE common platform enumeration 301CPER common platform error record 302CPG clock pulse generator 303CPI cycles per instruction 304CPL current privilege level 305CPLD complex programmable logic device 306CPP C preprocessor 307CPS characters per second 308CPS continuation-passing style 309CPT command pass through 310CPU central processing unit 311CR carriage return 312CRC cyclic redundancy check 313CRL carrier recovery loop 314CRLF carriage return line feed 315CSPM cloud security posture management 316CSU C start up 317CRT cathode ray tube 318CRTP curiously recurring template pattern 319CRUD create, read, update, and delete 320CS cable select 321CS chip select 322CS code segment 323CS computer science 324CSDL {common,conceptual} schema definition language 325CSI channel state information 326CSI common system interface 327CSMA carrier sense multiple access 328CSMA/CA carrier sense multiple access with collision avoidance 329CSMA/CD carrier sense multiple access with collision detection 330CSP communicating sequential processes 331CSP content security policy 332CSP constrain satisfaction problems 333CSP cryptographic service provider 334CSR control [and] status registers 335CSRG Computer Systems Research Group 336CSS cascading style sheets 337CST common spanning tree 338CSV comma-separated values 339CTF compact c type format 340CTM close to metal 341CTR counter [mode] 342CTS clear to send 343CTS common type system 344CUA common user access 345CUT coordinated universal time 346CV control voltage 347CVE common vulnerabilities and exposures 348CVS Concurrent Versions System 349DA destination address 350DAA distributed application architecture 351DAAP digital audio access protocol 352DAB digital audio broadcasting 353DAC digital [to] analog converter 354DAC discretionary access control 355DAD duplicate address detection 356DANE DNS-based Authentication of Named Entities 357DAO disk at once 358DAP Directory Access Protocol 359DAT digital audio tape 360DAT dynamic acceleration technology 361DB database 362DBA database administrator 363DBA dynamic bandwidth allocation 364DBB data bus buffer 365DBC design by contract 366DBL dynamic buffer limiting 367DBMS database management system 368DBS database server 369DC data center 370DC direct current 371DCC Direct Client-to-Client 372DCC direct cable connect 373DCD data carrier detect 374DCE data control equipment 375DCE distributed computing environment 376DCIM data center infrastructure management 377DCIM digital camera images 378DCL Digital Command Language 379DCOM distributed component object model 380DCOP Desktop COmmunication Protocol 381DCS data collection systems 382DCT discrete cosine transform 383DCU data cache unit 384DDC display data channel 385DDE dynamic data exchange 386DDI device drivers interface 387DDK device driver kit 388DDL data description language 389DDR double data rate 390DDS direct digital sound 391DDWG Digital Display Working Group 392DE debugging extensions 393DE desktop environment 394DEA data encryption algorithm 395DEC Digital Equipment Corporation 396DEK data encryption key 397DEP data execution prevention 398DER distinguished encoding rules 399DES Data Encryption Standard 400DF don't fragment 401DFA deterministic finite automaton 402DFC data flow control 403DFS depth first search 404DFS distributed file system 405DFSAN Data Flow Sanitizer 406DFT diagnostic function test 407DFT discrete Fourier transform 408DGL data generation language 409DGEMM double precision general matrix multiply 410DH Diffie-Hellman 411DHCP Dynamic Host Configuration Protocol 412DIA dedicated Internet access 413DIB device independent bitmap 414DIFS distributed inter-frame space 415DIMM dual inline memory module 416DIRT design in real time 417DKI driver/kernel interface 418DL diode logic 419DL discrete logarithm 420DL download 421DLCI data link connection identifier 422DLE data link escape 423DLL dynamic link library 424DLNA digital living network alliance 425DLP discrete logarithm problem 426DMA direct memory access 427DMI desktop management interface 428DMS document management system 429DMT discrete multitone modulation 430DMU data management layer 431DNARD Digital network appliance reference design 432DND drag and drop 433DNLC directory name lookup cache 434DNS Domain Name System 435DNSSEC DNS Security Extensions 436DOE distributed object environment 437DOF data over fibre 438DOM document object model 439DOS denial of service 440DOS disk operating system 441DP DisplayPort 442DPC deferred procedure call 443DPCM differential pulse code modulation 444DPD dead peer detection 445DPI deep packet inspection 446DPI dots per inch 447DPL descriptor privilege level 448DPS Display PostScript 449DPST display power savings technology 450DRAAS disaster recovery as a service 451DRAM dynamic random access memory 452DRBG deterministic random bit generator 453DRI direct rendering infrastructure 454DRM digital rights management 455DRM direct rendering manager 456DRRS display refresh rate switching 457DS debug store 458DS differentiated services 459DS9000 DeathStation 9000 460DS9K DeathStation 9000 461DSA digital signature algorithm 462DSAP destination service access point 463DSB double-sideband modulation 464DSCP differentiated services code point 465DSDT differentiated system descriptor table 466DSF device special file 467DSL dataset and snapshot layer 468DSL digital subscriber line 469DSL domain specific language 470DSLAM digital subscriber line access multiplexer 471DSN delivery status notification 472DSO dynamic shared object 473DSP digital signal processor 474DSSS direct sequence spread spectrum 475DTB device tree blob 476DTC device tree compiler 477DTD document type definition 478DTE data terminal equipment 479DTE dumb terminal emulator 480DTL diode-transistor logic 481DTLS datagram transport layer security 482DTS device tree source 483DTS digital thermal sensor 484DUT device under test 485DVB digital video broadcasting 486DVCS distributed version control system 487DVD digital versatile disc 488DVFS dynamic voltage and frequency scaling 489DVI device independent 490DVI Digital Visual Interface 491DVR digital video recorder 492DWARF Debugging With Attributed Record Formats 493E-XER extended XML encoding rules 494EABI embedded-application binary interface 495EAI Email Address Internationalization 496EAI Enterprise Application Integration 497EAP Extensible Authentication Protocol 498EAPOL EAP over Lan 499EAV entity-attribute-value model 500EAV ethernet audio/video bridging 501EBCDIC Extended Binary Coded Decimal Interchange Code 502EBDA Extended BIOS Data Area 503EBNF extended backus-naur form 504EBR extended boot record 505EC elliptic curve 506ECC elliptic curve cryptography 507ECC error correction code 508ECDH elliptic curve Diffie-Hellman 509ECDL elliptic curve discrete logarithm 510ECDLP elliptic curve discrete logarithm problem 511ECDSA elliptic curve digital signature algorithm 512ECL emitter-coupled logic 513ECN explicit congestion notification 514ECP enhanced capability port 515ECS enhanced chip set 516ECS extended configuration space 517EDAC error detection and correction 518EDAT enhanced dynamic acceleration technology 519EdDSA Edwards curve digital signature algorithm 520EDGE explicit data graph execution 521EDID extended display identification data 522EDO extended data out 523EDS electronical data sheet 524EDSAC electronic delay storage automatic calculator 525EDVAC electronic discrete variable automatic computer 526EEE energy efficient ethernet 527EEE embrace, extend, extinguish 528EEPROM electrically erasable programmable read only memory 529EFI extensible firmware interface 530EFL emitter follower logic 531EFM eight to fourteen modulation 532EFS extent file system 533EGA Enhanced Graphics Adapter 534EGP exterior gateway protocol 535EH extension header 536EIDE enhanced IDE 537EISA extended industry standard architecture 538EINJ error injection table 539ELF executable and linking format 540ELS entry level system 541EMI electro-magnetic interference 542EMP electro-magnetic pulse 543EMR electro-magnetic radiation 544EMACS Editor MACroS 545ENIAC electronic numerical integrator and computer 546EOF end of file 547EOI end of interrupt 548EOIS end of interactive support 549EOL end of life 550EOL end of line 551EOT end of transmission 552EPIC explicitly parallel instruction computing 553EPP enhanced parallel port 554EPRML extended partial response, maximum likelihood 555EPROM erasable programmable read only memory 556EPT extended page tables 557ERC error recovery control 558ERD emergency recovery disk 559ERD entity relationship diagram 560ERE extended regular expression 561ERST error record serialization table 562ESAN Efficiency Sanitizer 563ESB enterprise service bus 564ESDI enhanced small disk interface 565ESDRAM enhanced synchronous dynamic random access memory 566ESI enclosure services interface 567ESS electronic switching system 568ESS extended service set 569ESSID extended service set identifier 570EST enhanced speedstep 571ETL extract, transform, load 572EU execution unit 573EULA end user license agreement 574FAT file allocation table 575FBRAM frame buffer random access memory 576FCIF full common intermediate format 577FCL fiber channel loop 578FCS frame check sequence 579FDC floppy disk controller 580FDD floppy disk drive 581FDDI fiber distributed data interface 582FDE full disk encryption 583FDT flattened device tree 584FEA finite element analysis 585FEC forward error correction 586FET field-effect transistor 587FF finite field 588FF form feed 589FFDH finite-field Diffie-Hellman 590FFH functional fixed hardware 591FFI foreign function interface 592FFM focus follows mouse 593FFS Fast File System 594FFS find first set 595FFT fast Fourier transform 596FG floating gate 597FHRP first hop redundancy protocol 598FHSS frequency hop spread spectrum 599FID frequency identifier 600FIFO first in, first out 601FILO first in, last out 602FIPS Federal Information Processing Standards 603FIR fast infrared 604FLOPS floating [point] operations per second 605FLOSS free/libre/open source software 606FM frequency modulation 607FMR false match rate 608FOSS free/open source software 609FPGA field programmable gate array 610FPM fast page mode 611FPR floating point register 612FPU floating point unit 613FQDN fully qualified domain name 614FRR false rejection rate 615FRU field replaceable unit 616FS file system 617FSB front side bus 618FSCK file system check 619FSF Free Software Foundation 620FSK frequency shift keying 621FSM finite-state machine 622FTA fault tree analysis 623FTL flash translation layer 624FTP File Transfer Protocol 625FTPS File Transfer Protocol Secure 626FTTH fiber to the home 627FUS fast user switching 628FWH firmware hub 629FWS folding white space 630GAL generic array logic 631GARP generic attribute registration protocol 632GAS generic address structure 633GC garbage collector 634GCC GNU Compiler Collection 635GCM Galois counter mode 636GCR group-coded recording 637GDI Graphics Device Interface 638GDT global descriptor table 639GECOS general comprehensive operating supervisor 640GEM graphics environment manager 641GEM graphics execution manager 642GEMM general matrix multiply 643GENA general event notification architecture 644GHC Glasgow Haskell compiler 645GHES generic hardware error source 646GIC generic interrupt controller 647GID group identifier 648GIF graphics interchange format 649GLBP gateway load balancing protocol 650GMCH graphics and memory controller hub 651GNU GNU's Not Unix 652GOP graphics output protocol 653GOT global offset table 654GPE general purpose event 655GPF general protection fault 656GPG GNU Privacy Guard 657GPL [GNU] General Public License 658GPR general purpose register 659GPS generalized processor sharing 660GPT GUID partition table 661GPU graphics processing unit 662GR golden ratio 663GRE generic routing encapsulation 664GRO generic receive offload 665GSI global system interrupt 666GSO generic send offload 667GUI graphical user interface 668GUID globally unique identifier 669GUS Gravis UltraSound 670GVFS git virtual file system 671HA high availability 672HAL hardware abstraction layer 673HAT hashed array tree 674HATEOAS hypermedia as the engine of application state 675HBA host bus adapter 676HCC Home Cable Computer 677HCCA Home Cable Computer Adaptor 678HCF halt and catch fire 679HCI host controller interface 680HCI human-computer interaction 681HCL hardware compatibility list 682HDCP High-bandwidth Digital Content Protection 683HDD hard disk drive 684HDL hardware description language 685HDMI High-Definition Multimedia Interface 686HDTV high-definition television 687HECI host embedded controller interface 688HEST hardware error source table 689HEVC high efficiency video coding 690HF high frequency 691HFM highest frequency mode 692HFS hierarchical file system 693HID human interface device 694HKDF HMAC-based key derivation function 695HKP HTTP Keyserver Protocol 696HLL high-level language 697HMA high memory area 698HMI human-machine interface 699HOOD hierarchical object oriented design 700HOTP HMAC-based one time password 701HP Hewlett-Packard 702HPC high performance computing 703HPD hot plug detection 704HPET high precision event timer 705HSM hardware security module 706HSM hierarchical storage management 707HSRP hot standby router protocol 708HT hyper-threading 709HTC hardware thermal control 710HTCC high temperature co-fired ceramic 711HTML HyperText Markup Language 712HTT hyper-threading technology 713HTTP Hypertext Transfer Protocol 714HTTPS Hypertext Transfer Protocol Secure 715HVM hardware virtual machine 716HVDS High-Voltage Differential Signaling 717HWASAN Hardware-assisted Address Sanitizer 718HZ Hertz 719I2O intelligent input/output 720IA information assurance 721IAAS infrastructure as a service 722IANA Internet Assigned Numbers Authority 723IBC iterated block cipher 724IBM International Business Machines 725IBPI international blinking pattern interpretation 726IBS instruction based sampling 727IBSS independent basic service set 728IC integrated circuit 729ICA independent computer architecture 730ICACLS integrity control access control lists 731ICB Internet Citizen's Band 732ICE in-circuit emulator 733ICE internal compiler error 734ICH I/O controller hub 735ICMP Internet Control Message Protocol 736ICT information and communications technology 737ICW initialization command word 738IDA Intel dynamic acceleration 739IDCMP Intuition direct communication message port 740IDCT inverse discrete cosine transform 741IDE integrated development environment 742IDE integrated drive electronics 743IDPS intrusion detection [and] prevention system 744IDRP inter-domain routing protocol 745IDS intrusion detection system 746IDT interrupt descriptor table 747IE Internet Explorer 748IEC International Electrotechnical Commission 749IEEE Institute of Electrical and Electronics Engineers 750IESG Internet Engineering Steering Group 751IETF Internet Engineering Task Force 752IF intermediate frequency 753IFCM isochronous flow control mode 754IFF Interchange File Format 755IFS internal field separator 756IGD Internet gateway device 757IGMP Internet Group Management Protocol 758IGP interior gateway protocol 759IHV independent hardware vendor 760IKE Internet key exchange 761ILM internal loopback mode 762ILOM integrated lights-out management 763ILP instruction level parallelism 764IM instant messaging 765IME input method editor 766IMAP Internet Message Access Protocol 767IMC integrated memory controller 768IMCR interrupt mode configuration register 769IMR interrupt mask register 770IMS information management system 771IMSI international mobile subscriber identity 772INCITS InterNational Committee for Information Technology Standards 773INODE index node 774IO input/output 775IOCTL input/output control 776IOM input/output managers 777IOMMU input/output memory management unit 778IOT Internet of Things 779IP Internet Protocol 780IP intellectual property 781IPC instructions per cycle 782IPC interprocess communication 783IPCF interprocess communication facility 784IPE integrated programming environment 785IPI intelligent peripheral interface 786IPI interprocessor interrupt 787IPL Initial Program Load 788IPL Interrupt Priority Level 789IPMB Intelligent Platform Management Bus 790IPMI Intelligent Platform Management Interface 791IPNG Internet Protocol, Next Generation 792IPS in-plane switching 793IPS intrusion prevention system 794IPSEC Internet Protocol Security 795IRC Internet Relay Chat 796IRDA infrared data association 797IRDP ICMP Router Discovery Protocol 798IR intermediate representation 799IRQ interrupt request 800IRQL interrupt request level 801IRR interrupt request register 802IRTF Internet Research Task Force 803IS information system 804ISA industry standard architecture 805ISA instruction set architecture 806ISE instant secure erase 807ISDN integrated services digital network 808ISI inter-symbol interference 809ISL initial system load 810ISM industrial, scientific, [and] medical 811ISMS information system management system 812ISN initial serial number 813ISO International Standards Organization 814ISOC Internet Society 815ISP Internet service provider 816ISR in-service register 817ISR interrupt service routine 818IST internal spanning tree 819IST interrupt stack table 820ISV independent software vendor 821IT information technology 822ITB Intel Turbo Boost 823ITIL information technology infrastructure library 824ITP in-target probe 825ITSM IT service management 826IV initialization vector 827IVT interrupt vector table 828JBOD just a bunch of disks 829JCL Job Control Language 830JFET junction [gate] field-effect transistor 831JIT just in time 832JPEG Joint Photographic Experts Group 833JRE Java Runtime Environment 834JSON JavaScript Object Notation 835JTAG joint test action group 836KASAN Kernel Address Sanitizer 837KASLR kernel address space layout randomization 838KB keyboard 839KB kilobyte 840KBD keyboard 841KBD kilobaud 842KCS keyboard controller style 843KEM key encapsulation mechanism 844KLOC thousand lines of code 845KMS kernel-mode setting 846KPI kernel programming interface 847KVA kernel virtual address 848KVM kernel virtual machine 849KVM kernel virtual memory 850KVM keyboard, video, [and] mouse 851L2CAP link layer control and adaptation protocol 852LAG link aggregation group 853LAMP Linux Apache MySQL {Perl,PHP,Python} 854LAN local area network 855LAPIC local advanced programmable interrupt controller 856LAR load access rights 857LBA logical block addressing 858LBNF labeled backus-naur form 859LBS location-based service 860LCD liquid crystal display 861LCP link control protocol 862LDA local delivery agent 863LDAP Lightweight Directory Access Protocol 864LDR light-dependent resistor 865LDT local descriptor table 866LE logical extent 867LED light emitting diode 868LELL low energy link layer 869LER label edge router 870LF line feed 871LF low frequency 872LFM lowest frequency mode 873LFN long file names 874LFO low-frequency oscillation 875LFS log-structured file system 876LFU least frequently used 877LHP loop heat pipe 878LIF logical interchange format 879LIFO last in, first out 880LILO LInux LOader 881LILO last in, last out 882LINT local interrupt 883LIR local Internet registry 884LISP LISt Processor 885LISP Locator/ID Separation Protocol 886LKM {Linux,loadable} kernel module 887LKML Linux kernel mailing list 888LL load linked 889LL/SC load linked/store conditional 890LLC logical link control 891LLD low-level design 892LLDD low-level design document 893LLDP link layer discovery protocol 894LLF low level format 895LLMNR link-local multicast name resolution 896LLVM Low Level Virtual Machine 897LM long mode 898LMCE local machine check exception 899LMI local management interface 900LMM link management mode 901LMP link management protocol 902LNO loop nest optimization 903LOC lines of code 904LOM lights-out management 905LPE Linux performance events 906LPC low pin count 907LPS local positioning system 908LRC longitudinal redundancy check 909LRM left-to-right mark 910LRO left-to-right override 911LRU least recently used 912LS link state 913LSAN Leak Sanitizer 914LSB Linux standards base 915LSB least significant {bit,byte} 916LSI large scale integration 917LSL load segment limit 918LSM log structured merge 919LSN Large Scale NAT 920LSN log sequence number 921LSO large send offload 922LSR label switch router 923LTCC low temperature co-fired ceramic 924LTO linear tape-open 925LTO link time optimization 926LTR left to right 927LTR load task register 928LTR letter(-sized paper) 929LTS long term support 930LUA Lua Uppercase Accident 931LUN logical unit number 932LV logical volume 933LVM logical volume management 934LVT local vector table 935LVDS Low-Voltage Differential Signaling 936LWP light-weight process 937LZSS Lempel Ziv Storer Szymanski 938LZW Lempel Ziv Welch 939MAB MAC authentication bypass 940MAC mandatory access control 941MAC {media,medium} access control 942MAC message authentication {check,code} 943MADT multiple APIC descriptor table 944MAMR microwave-assisted magnetic recording 945MB megabyte 946MBA multi-boot agent 947MBR master boot record 948MBS megabits per second 949MC memory controller 950MCA machine check architecture 951MCA MicroChannel architecture 952MCC multiversion concurrency control 953MCE machine check exception 954MCGA Multi-Color Graphics Array 955MCH memory controller hub 956MCLAG multi-chassis link aggregation group 957MCM multi-chip module 958MCQ memory controlled queue 959MD machine-dependent 960MD MiniDisc 961MD-SAL model-driven service abstraction layer 962MDA mail delivery agent 963MDA Monochrome Display Adapter 964MDC Management Data Clock 965MDI Medium Dependent Interface 966MDI-X Medium Dependent Interface Crossover 967MDIO Management Data Input/Output 968MDMX MIPS Digital Media eXtension 969MDRAM multibank dynamic random access memory 970MESI modified, exclusive, shared, invalid 971MFC merge from current 972MFC Microsoft Foundation Classes 973MFM modified frequency modulation 974MFU most frequently used 975MGCP media gateway control protocol 976MHU message handling unit 977MI machine-independent 978MI machine interface 979MIB management information base 980MIC message integrity {check,code} 981MID mobile Internet device 982MIDI musical instrument digital interface 983MIF management information format 984MII media independent interface 985MIM man in the middle 986MIMD multiple instruction, multiple data 987MIME Multipurpose Internet Mail Extensions 988MIMO multiple input multiple output 989MIPS million instructions per second 990MIPS Microprocessor without Interlocked Pipeline Stages 991MISD multiple instruction, single data 992MIT Massachusetts Institute of Technology 993MITM man in the middle 994ML machine language 995ML machine learning 996ML mailing list 997ML markup language 998ML maximum likelihood 999MLAG multi-chassis link aggregation group 1000MLC multi-level cell 1001MLD multicast listener discovery 1002MLHP micro loop heat pipe 1003MLIR multi-level intermediate representation 1004MMF multi-mode fiber 1005MMIC monolithic microwave integrated circuit 1006MMIO memory mapped input/output 1007MMORPG massive multiplayer online role playing game 1008MMRP multiple MAC registration protocol 1009MMU memory management unit 1010MMX matrix math extension 1011MMX multimedia extension 1012MMX multiple math extension 1013MO magneto-optical 1014MOESI modified, owned, exclusive, shared, invalid 1015MOF maximum operating frequency 1016MOSFET metal-oxide-semiconductor field-effect transistor 1017MOSI modified, owned, shared, invalid 1018MP multi-platform 1019MP multiplayer 1020MP {multiprocessing,multiprocessor} 1021MPEG moving picture experts group 1022MPI message passing interface 1023MPLS Multiprotocol Label Switching 1024MPP massively parallel processor 1025MPS memory pool system 1026MPS multiprocessor specification 1027MQTT Message Queuing Telemetry Transport 1028MR modem ready 1029MRO method resolution order 1030MRP multiple registration protocol 1031MRU most recently used 1032MS Microsoft 1033MSAN Memory Sanitizer 1034MSB most significant {bit,byte} 1035MSC message sequence chart 1036MSE mean square error 1037MSF minutes seconds frames 1038MSI message signaled interrupt 1039MSI modified, shared, invalid 1040MSR {machine state,model-specific} register 1041MSS maximum segment size 1042MSTP Multiple Spanning Tree Protocol 1043MT machine translation 1044MTA mail transfer agent 1045MTBF mean time between failures 1046MTP media transfer protocol 1047MTRR memory type range register 1048MTTF mean time to failure 1049MTU maximum transmission unit 1050MUA mail user agent 1051MUD multi-user domain 1052MVCC multiversion concurrency control 1053MVR multicast VLAN registration 1054MVRP multiple VLAN registration protocol 1055MWE module width encoding 1056MX mail exchange 1057NACK negative acknowledgement 1058NAK negative acknowledgement 1059NAN neighbor awareness networking 1060NAN not a number 1061NAPT Network Address Port Translation 1062NAS network attached storage 1063NAT network address translation 1064NAV network allocation vector 1065NC numerical control 1066NC-SI network controller sideband interface 1067NCO numerically-controlled oscillator 1068NCP Network Control Protocol 1069NCSI network connectivity status indicator 1070NCQ native command queuing 1071ND neighbor discovery 1072NDFA nondeterministic finite automaton 1073NDIS network driver interface specification 1074NE numeric error 1075NEWS Network extensible Window System 1076NFA nondeterministic finite automaton 1077NFC near-field communication 1078NFCI no functional change intended 1079NFS network file system 1080NFV network function virtualization 1081NHACP NABU HCCA Application Communication Protocol 1082NIA next instruction address 1083NIC network information center 1084NIC network interface card 1085NIDS network intrusion detection system 1086NIP network interface protocol 1087NIPS network intrusion prevention system 1088NIS network information service 1089NIST National Institute of Standards and Technology 1090NLS native language support 1091NMI non-maskable interrupt 1092NNTP Network News Transfer Protocol 1093NMR nonce-misuse resistance 1094NOC network operations center 1095NOP no operation 1096NOS network operating system 1097NP nondeterministic polynomial time 1098NRND not recommended for new designs 1099NRZ non-return to zero 1100NSA nation-state adversary 1101NSA no such agency 1102NSA National Security Agency 1103NTM non-deterministic Turing machine 1104NTP Network Time Protocol 1105NUMA non-uniform memory access 1106NURBS non-uniform rational basis spline 1107NVMM NetBSD Virtual Machine Monitor 1108NVMM non-volatile main memory 1109NVRAM non-volatile random access memory 1110NW not write-through 1111NX no execute 1112OAEP optimal asymmetric encryption padding 1113OAM operations, administration, and {management,maintenance} 1114OBO off by one 1115OBOE off by one error 1116OCL object constraint language 1117OCR optical character recognition 1118ODE offline device environment 1119ODI open data-link interface 1120ODM object data manager 1121ODCM on-demand clock modulation 1122ODMR on-demand mail relay 1123ODT on-die termination 1124OEM original equipment manufacturer 1125OFB output feedback 1126OFDM orthogonal frequency division multiplexing 1127OFET organic field-effect transistor 1128OLAP online analytical processing 1129OLE object linking and embedding 1130OLTP online transaction processing 1131ONFI open nand flash interface 1132OO OpenOffice 1133OO object oriented 1134OOB out of band 1135OOE out of order execution 1136OOM out of memory 1137OOO OpenOffice.org 1138OOP object oriented programming 1139OOPS object oriented programming systems 1140OOSE object oriented software engineering 1141OPM operations per minute 1142OPS operations per second 1143OQL Object Query Language 1144ORB object request broker 1145ORM object-relational mapping 1146OS operating system 1147OSD object-based storage device 1148OSD open source definition 1149OSF open software foundation 1150OSI Open Source Initiative 1151OSI open systems interconnection 1152OSPF open shortest path first 1153OSPM OS power management 1154OSS open sound system 1155OSS open source software 1156OSVW operating system visible workarounds 1157OTP one time password 1158OTP open telecom platform 1159OU organizational unit 1160OUI organizationally unique identifier 1161OWASP Open Web Application Security Project 1162OWL Web Ontology Language 1163P2P PCI to PCI 1164P2P peer to peer 1165PA phase accumulator 1166PA physical address 1167PAAS platform as a service 1168PAC phase-amplitude converter 1169PAE physical address extension 1170PAGP port aggregation protocol 1171PAL phase alternating line 1172PAL programmable array logic 1173PAM pluggable authentication modules 1174PAM pulse amplitude modulation 1175PAP password authentication protocol 1176PAT page attribute table 1177PAT port address translation 1178PATA parallel ATA 1179PAX portable archive exchange 1180PBE pending break encoding 1181PBE programming by example 1182PBR partition boot record 1183PBX private branch exchange 1184PC personal computer 1185PC program counter 1186PCB printed circuit board 1187PCB process control block 1188PCB Protocol Control Block 1189PCBC propagating cipher block chaining 1190PCC Portable C Compiler 1191PCD page-level cache disable 1192PCE path computation element 1193PCE performance-monitor counter enable 1194PCEP Path Computation Element Protocol 1195PCH platform controller hub 1196PCI peripheral component interconnect 1197PCM phase change memory 1198PCM pulse code modulation 1199PCMCIA Personal Computer Memory Card International Association 1200PCP Port Control Protocol 1201PD public domain 1202PDA personal digital assistant 1203PDA pushdown automaton 1204PDAG propositional directed acyclic graph 1205PDB power distribution board 1206PDF portable document format 1207PDM pulse-duration modulation 1208PDN pull-down network 1209PDP page {descriptor,directory} page 1210PDS product data sheet 1211PDU protocol data unit 1212PE protection enable 1213PE provider edge 1214PE portable executable 1215PEAP Protected EAP 1216PECI platform environment control interface 1217PEP protocol extension protocol 1218PER packed encoding rules 1219PFS perfect forward secrecy 1220PGAS partitioned global address space 1221PGE page global enable 1222PGO profile guided optimization 1223PGP Pretty Good Privacy 1224PHB PCI host bridge 1225PHP PHP: Hypertext Preprocessor 1226PIC performance instrumentation counters 1227PIC position independent code 1228PIC programmable interrupt controller 1229PICNIC problem in chair, not in computer 1230PID process id 1231PIE position independent executable 1232PIL Priority Interrupt Level 1233PIM personal information manager 1234PIM platform-independent model 1235PIO programmed input/output 1236PIPT physically indexed, physically tagged 1237PIQ prefetch input queue 1238PIT programmable interrupt timer 1239PIV personal identity verification 1240PIX Private Internet eXchange 1241PKCS public-key cryptography standards 1242PKI public key infrastructure 1243PLC programmable logic controller 1244PLD programmable logic device 1245PLL phase locked loop 1246PLRU pseudo LRU 1247PLT procedure linkage table 1248PLTM package level thermal management 1249PM power management 1250PM {phase,pulse} modulation 1251PMC performance monitoring counters 1252PME power management event 1253PMEG page map entry group 1254PMI performance monitoring infrastructure 1255PMI platform management interrupt 1256PMIC power management integrated circuit 1257PMIO port-mapped input/output 1258PMT photo-multiplier tube 1259PMU performance monitoring units 1260PMU power management unit 1261PNG portable network graphics 1262PNP plug and play 1263POE power over ethernet 1264POF probability of failure 1265POP Post Office Protocol 1266POP power on password 1267POR plan of record 1268POSIX Portable Operating System Interface [for Unix] 1269POST power on self test 1270POTS plain old telephone system 1271POWER Performance Optimization With Enhanced RISC 1272POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1273PP pair programming 1274PPB PCI [to] PCI bridge 1275PPC PowerPC 1276PPC Power Performance Computing 1277PPI pixels per inch 1278PPM pages per minute 1279PPP Point-to-Point Protocol 1280PPPOA Point-to-Point Protocol over ATM 1281PPPOE Point-to-Point Protocol over Ethernet 1282PPR processor programming reference 1283PPT powerpoint 1284PPT punched paper tape 1285PPU physics processing unit 1286PQC post-quantum cryptography 1287PRAM Parameter RAM 1288PRBS pseudorandom bit sequence 1289PRG pseudorandom generator 1290PRF pseudorandom function [family] 1291PRML partial response, maximum likelihood 1292PRN pseudorandom {noise,number} 1293PRNG pseudorandom number generator 1294PROM programmable read only memory 1295PRP pseudorandom permutation 1296PRU Programmable Realtime Unit 1297PS PostScript 1298PSD power spectral density 1299PSE page size extensions 1300PSK phase shift keying 1301PSK pre-shared key 1302PSTN public switched telephone network 1303PSW program status word 1304PTE page table entry 1305PTLA pseudo top level aggregator 1306PTP page table page 1307PTV perceived target value 1308PU processing unit 1309PUC personal unblocking code 1310PUN physical unit number 1311PV physical volume 1312PVC permanent virtual circuit 1313PVG physical volume group 1314PVI protected-mode virtual interrupt 1315PVRST Per-VLAN rapid spanning tree 1316PVST Per-VLAN Spanning Tree 1317PWM pulse width modulation 1318PXE preboot execution environment 1319QA quality assurance 1320QAM quadrature amplitude modulation 1321QAM quality assurance management 1322QBE query by example 1323QC quality control 1324QDI quasi delay insensitive 1325QCIF quarter common intermediate format 1326QOI quality of implementation 1327QOI quick order interface 1328QOS quality of service 1329QVL qualified vendor list 1330R/O read only 1331R/W read/write 1332RA receiver address 1333RA remote assistance 1334RA resource affinity 1335RA router advertisement 1336RAD rapid application development 1337RADIUS remote authentication dial-in user service 1338RAID redundant array of {independent,inexpensive} disks 1339RAII resource acquisition is initialization 1340RAM random access memory 1341RAS reliability, availability and serviceability 1342RAS remote access service 1343RAS restartable atomic sequence 1344RAS row address strobe 1345RBF radial basis function 1346RBNF routing backus-naur form 1347RBT red-black tree 1348RC release candidate 1349RC remote control 1350RC run commands 1351RCS Revision Control System 1352RCU read, copy, update 1353RDB Rigid Disk Block 1354RDBMS relational database management system 1355RDF Resource Description Framework 1356RDM relational data model 1357RDMA remote direct memory access 1358RDP remote desktop protocol 1359RDRAM Rambus DRAM 1360RE regular expression 1361REPL read, evaluate, print, loop 1362REST representational state transfer 1363RF radio frequency 1364RFB remote frame buffer 1365RFI radio frequency interference 1366RFO request for ownership 1367RFU reserved for future use 1368RGB red green blue 1369RGBA red green blue alpha 1370RGMII reduced gigabit media independent interface 1371RH read hit 1372RHEL Red Hat Enterprise Linux 1373RHL Red Hat Linux 1374RIB routing information base 1375RIFF Resource Interchange File Format 1376RIP Raster Image Processor 1377RIP Routing Information Protocol 1378RIR regional Internet registry 1379RISC reduced instruction set {computer,computing} 1380RKM ROM Kernel Manual 1381RLE run length encoding 1382RLL run length limited 1383RLO right-to-left override 1384RM read miss 1385RMCP Remote Management Control Protocol 1386RMI remote method invocation 1387RMO Relaxed Memory Ordering 1388RMPM rapid memory power management 1389RMS root mean square 1390RMW read, modify, write 1391RNG random number generator 1392ROM read only memory 1393ROP return-oriented programming 1394RPC remote procedure call 1395RPG Report Program Generator 1396RPKI resource PKI 1397RPL requested privilege level 1398RPM revolutions per minute 1399RPN reverse Polish notation 1400RPVST Rapid Per-VLAN Spanning Tree 1401RR random replacement 1402RR round robin 1403RS relay station 1404RSA Rivest, Shamir, [and] Adleman 1405RSIP Realm Specific IP 1406RSN Robust Secure Network 1407RSS really simple syndication 1408RSS Receive Side Scaling 1409RSS residual sum of squares 1410RSTP Rapid Spanning Tree Protocol 1411RT real time 1412RTC real time clock 1413RTC real time computing 1414RTF rich text format 1415RTL register transfer language 1416RTL resistor-transistor logic 1417RTL right to left 1418RTOS real time operating system 1419RTP Real-time Transport Protocol 1420RTS request to send 1421RTT round trip time 1422RTTI run-time type information 1423RUP rational unified process 1424RW Rabin-Williams 1425RWM read-write memory 1426RX {receive,receiver} 1427S/PDIF Sony/Philips Digital Interface Format 1428SA security advisory 1429SA security association 1430SA source address 1431SA structured analysis 1432SAAS software as a service 1433SABRE Semi-automated business research environment 1434SACD super audio compact disc 1435SAD security association database 1436SAF-TE SCSI accessed fault-tolerant enclosure 1437SAGE Semi-automated ground environment 1438SAL {service,system} abstraction layer 1439SAM serial access memory 1440SAM sum addressed memory 1441SAML security assertion markup language 1442SAN storage area network 1443SAP service access point 1444SAPIC streamlined advanced programmable interrupt controller 1445SASD structured analysis, structured design 1446SASI Shugart Associates System Interface 1447SASL simple authentication [and] security layer 1448SATA serial advanced technology attachment 1449SAX simple API for XML 1450SB sound blaster 1451SBSA server base system architecture 1452SBU standard build unit 1453SC store conditional 1454SCA source code analyzer 1455SCADA supervisory control and data acquisition 1456SCC single chip cloud 1457SCC source code control 1458SCCP skinny call control protocol 1459SCCS Source Code Control System 1460SCI scalable coherent interface 1461SCI system control interrupt 1462SCIM smart common input method 1463SCM software configuration management 1464SCM source code management 1465SCM storage-class memory 1466SCO synchronous connection orientated 1467SCP secure copy 1468SCP system control processor 1469SCPI system control and power interface 1470SCSI Small Computer System Interface 1471SCTP Stream Control Transmission Protocol 1472SDDC software defined data center 1473SDEI software delegated exception interface 1474SDI symbol deinterleave 1475SDK software development kit 1476SDL Simple Declarative Language 1477SDL Simple Direct-media Layer 1478SDLC {software,system,systems} development life cycle 1479SDN software defined networking 1480SDP Session Description Protocol 1481SDR software defined radio 1482SDRAM synchronous dynamic random access memory 1483SDS software defined storage 1484SDT syntax-directed translation 1485SEA synchronous external abort 1486SEGV segmentation violation 1487SED self-encrypting drive 1488SED stream editor 1489SEMB serial ATA enclosure management bridge 1490SEO search engine optimization 1491SES SCSI enclosure services 1492SFC sequential function chart 1493SFI simple firmware interface 1494SFI software fault isolation 1495SFTP SSH File Transfer Protocol 1496SFTP Serial File Transfer Protocol 1497SFTP Simple File Transfer Protocol 1498SGI Silicon Graphics, Inc 1499SGI software generated interrupt 1500SGMII serial gigabit media independent interface 1501SGPIO serial general purpose input/output 1502SGRAM synchronous graphics random access memory 1503SHA secure hash algorithm 1504SICP structure and interpretation of computer programs 1505SIDH supersingular isogeny Diffie-Hellman 1506SIEM security information and event management 1507SIF source input format 1508SIFS short inter-frame space 1509SIM subscriber identity module 1510SIMD single instruction, multiple data 1511SIMM single inline memory module 1512SIP Session Initiation Protocol 1513SIR signal-to-interference ratio 1514SIR slow infrared 1515SISD single instruction, single data 1516SIV synthetic intialization vector 1517SLAAC stateless address auto-configuration 1518SLC single-level cell 1519SLDRAM synchronous-link dynamic random access memory 1520SLED single large expensive disk 1521SLI scalable link interface 1522SLI scan-line interleave 1523SLIC system license internal code 1524SLOC source lines of code 1525SLRU segmented LRU 1526SMA smart memory access 1527SMAF system management action field 1528SMAP Simple Mail Access Protocol 1529SMAP supervisor mode access prevention 1530SMART self-monitoring analysis and reporting technology 1531SMB Server Message Block 1532SMB system management bus 1533SMBIOS System Management BIOS 1534SMC system management controller 1535SMD storage module device 1536SMEP supervisor mode execution protection 1537SMF single mode fiber 1538SMI structure of management information 1539SMI system management interrupt 1540SMM system management mode 1541SMP serial management protocol 1542SMP symmetric multiprocessing 1543SMR shingled magnetic recording 1544SMR state machine replication 1545SMT simultaneous multithreading 1546SMTP Simple Mail Transfer Protocol 1547SMU system management unit 1548SNA systems network architecture 1549SNAP Sub-Network Access Protocol 1550SNIA Storage Networking Industry Association 1551SNMP Simple Network Management Protocol 1552SNR signal-to-noise ratio 1553SOA service oriented architecture 1554SOAP Simple Object Access Protocol 1555SOC system on chip 1556SOF start of frame 1557SOH start of header 1558SOHO small office/home office 1559SOL serial over LAN 1560SOM system on module 1561SP service pack 1562SP stack pointer 1563SPA storage pool allocator 1564SPAN switched port analyzer 1565SPARC scalable processor architecture 1566SPARQL SPARQL Protocol and RDF Query Language 1567SPD security policy database 1568SPD serial presence detect 1569SPDIF Sony/Philips digital interface format 1570SPI serial peripheral interface 1571SPI stateful packet inspection 1572SPIR standard portable intermediate representation 1573SPL system interrupt priority level 1574SPL spinlock 1575SPMD single process, multiple data 1576SPR special purpose register 1577SPT sectors per track 1578SQA software quality assurance 1579SQCIF sub quarter common intermediate format 1580SQL Structured Query Language 1581SRAM static random access memory 1582SRC sample rate conversion 1583SRP SCSI RDMA protocol 1584SRR shaped round robin 1585SRTP Secure Real-time Transport Protocol 1586SS self-snoop 1587SS stack segment 1588SSA static single assignment 1589SSAP source service access point 1590SSB single-sideband modulation 1591SSC spread spectrum clock 1592SSD solid state drive 1593SSE streaming SIMD extensions 1594SSFDC solid state floppy disc card 1595SSH secure shell 1596SSI server side includes 1597SSID service set identifier 1598SSTP secure socket tunneling protocol 1599SSL secure sockets layer 1600SSP stack smashing protection 1601STC software thermal control 1602STD state transition diagram 1603STM software transactional memory 1604STOMP Streaming Text Oriented Messaging Protocol 1605STP Spanning Tree Protocol 1606STP shielded twisted pair 1607STRG spanning tree root guard 1608SUN Stanford University Network 1609SUS Single Unix Specification 1610SUT system under test 1611SVC switched virtual circuit 1612SVG scalable vector graphics 1613SVGA Super Video Graphics Array 1614SVI {switch,switched} virtual interface 1615SVM secure virtual machine 1616SVM support vector machine 1617SVR System V Release 1618SVS Separate Virtual Space 1619SWF Shockwave Flash 1620SWIG simplified wrapper [and] interface generator 1621SYR symbol timing recovery 1622TA test assertion 1623TA transmitter address 1624TACACS terminal access controller access-control system 1625TAI international atomic time 1626TAO track at once 1627TAOCP The Art of Computer Programming 1628TAP Test Anything Protocol 1629TAS test and set 1630TB terabyte 1631TBNF transitional backus-naur form 1632TCB trace capture buffer 1633TCB trusted computing base 1634TCC thermal control circuit 1635TCL tool command language 1636TCP Transmission Control Protocol 1637TCQ tagged command queueing 1638TDC time [to] digital converter 1639TDD test-driven development 1640TDD time division duplex 1641TDM time division multiplexing 1642TDMA time division multiple access 1643TDOA time difference of arrival 1644TDP thermal design {point,power} 1645TDR time-domain reflectometry 1646TECO Text Editor and Corrector 1647TEE Trusted Execution Environment 1648TFT thin film transistor 1649TFTP Trivial File Transfer Protocol 1650TIAS try it and see 1651TIFF tagged image file format 1652TITS try it to see 1653TK temporal key 1654TKIP Temporal Key Integrity Protocol 1655TLA top level aggregator 1656TLB translation lookaside buffer 1657TLD top level domain 1658TLER time-limited error recovery 1659TLI transport layer interface 1660TLS thread local storage 1661TLS transport layer security 1662TM Turing machine 1663TM thermal monitor 1664TMG transmogrifier 1665TMDS transition minimized differential signaling 1666TMO timeout 1667TOD time of day 1668TOE TCP offload engine 1669TOFU trust on first use 1670TOS terms of service 1671TOS trusted operating system 1672TOS type of service 1673TOTP time-based one time password 1674TP transaction processing 1675TPI tracks per inch 1676TPM transactions per minute 1677TPM trusted platform module 1678TPR task priority register 1679TPS transactions per second 1680TPS transmission parameters signaling 1681TR task register 1682TR token ring 1683TRL timing recovery loop 1684TRNG true random number generator 1685TS terminal services 1686TS time series 1687TS time stamp 1688TS transport stream 1689TSAN Thread Sanitizer 1690TSC time stamp counter 1691TSD time stamp disable 1692TSDB time series database 1693TSL test, set, lock 1694TSO time sharing option 1695TSO TCP segmentation offload 1696TSO Total Store Ordering 1697TSP Time-Stamp Protocol 1698TSP Tunnel Setup Protocol 1699TSP time synchronization protocol 1700TSP traveling salesman problem 1701TSS task state segment 1702TSV tab-separated values 1703TTL time to live 1704TTL transistor-transistor logic 1705TTM translation table maps 1706TTY teletype 1707TU translation unit 1708TUI {terminal,text-based,textual} user interface 1709TX {transmit out,transmitter} 1710TXG transaction group 1711TZ time zone 1712UAC user {access,account} control 1713UAF use-after-free 1714UART universal asynchronous receiver/transmitter 1715UAT user acceptance testing 1716UB undefined behavior 1717UBSAN Undefined Behavior Sanitizer 1718UC uncacheable 1719UCS uniform-cost search 1720UCS unified computing system 1721UCS universal coded character set 1722UDI uniform driver interface 1723UDMA ultra DMA 1724UDO ultra density optical 1725UDP User Datagram Protocol 1726UEFI unified extensible firmware interface 1727UFO UDP fragmentation offload 1728UFS Unix File System 1729UGA universal graphics adapter 1730UI unit interval 1731UI user interface 1732UICC universal integrated circuit card 1733UID unique identifier 1734UID user identifier 1735UL upload 1736UMA uniform memory access 1737UMA upper memory area 1738UMB upper memory block 1739UML unified modeling language 1740UMPC ultra-mobile PC 1741UPNP universal plug and play 1742UPS uninterruptible power supply 1743URI uniform resource identifier 1744URL uniform resource locator 1745URN uniform resource name 1746USART universal synchronous/asynchronous receiver/transmitter 1747USB universal serial bus 1748USWC uncacheable speculative write combining 1749UT unit test 1750UTC coordinated universal time 1751UTF unicode transformation formats 1752UTP unshielded twisted pair 1753UTS UNIX time-sharing 1754UUCP Unix-to-Unix Copy Protocol 1755UUID universally unique identifier 1756UUOC useless use of cat 1757UUT unit under test 1758UX user experience 1759VA vertical alignment 1760VA virtual address 1761VA volt-ampere 1762VAX virtual address extension 1763VB Visual Basic 1764VBR volume boot record 1765VCA variable-gain amplifier 1766VCC common collector voltage 1767VCCP virtual chassis control protocol 1768VCF voltage-controlled filter 1769VCM virtual channel memory 1770VCO voltage-controlled oscillator 1771VCP virtual chassis port 1772VCS version control system 1773VDPAU Video Decode and Presentation API for Unix 1774VES virtual execution system 1775VESA Video Electronics Standards Association 1776VFO variable-frequency oscillator 1777VFS virtual file system 1778VG volume group 1779VGA Video Graphics Array 1780VHDCI very high density cable interconnect 1781VID {VLAN,voltage level} identifier 1782VIM Vi IMproved 1783VIPT virtually indexed, physically tagged 1784VIVT virtually indexed, virtually tagged 1785VLAN virtual local area network 1786VLD variable-length decoding 1787VLIW very long instruction word 1788VLSI very large scale integration 1789VLSM variable length subnet mask 1790VM virtual {machine,memory} 1791VME virtual mode extension 1792VMX vector multimedia extensions 1793VMX virtual machine extensions 1794VNC virtual network computing 1795VOD video on demand 1796VPD vital product data 1797VPN virtual private network 1798VPWS virtual private wire service 1799VR virtual reality 1800VRAM video random access memory 1801VRF virtual routing and forwarding 1802VRM voltage regulator module 1803VROC Virtual RAID On CPU 1804VRRP Virtual Router Redundancy Protocol 1805VSTP VLAN Spanning Tree Protocol 1806VTP VLAN Trunking Protocol 1807VXFS Veritas file system 1808VXVM Veritas volume manager 1809W watt 1810W3C World Wide Web Consortium 1811WAFL write anywhere file layout 1812WAMP Web Application Messaging Protocol 1813WAN wide area network 1814WAP Wireless Application Protocol 1815WAP wireless access point 1816WDM Windows Driver Model 1817WDDM Windows Display Driver Model 1818WDT watchdog timer 1819WEP Wired Equivalent Privacy 1820WFI wait for interrupt 1821WFQ weighted fair queuing 1822WH write hit 1823WHEA Windows hardware error architecture 1824WIFI wireless fidelity 1825WLAN wireless local area network 1826WM write miss 1827WMF Windows meta file 1828WMI Windows Management Instrumentation 1829WOL Wake-on-LAN 1830WOM Wake-on-Modem 1831WOR Wake-on-Ring 1832WORM write once read many 1833WP WordPerfect 1834WP word processor 1835WP write protect 1836WPA Wi-Fi Protected Access 1837WPA2 Wi-Fi Protected Access II 1838WPAD web proxy auto-discovery protocol 1839WPS Wi-Fi Protected Setup 1840WRAM window random access memory 1841WS web services 1842WTC write through caching 1843WTD weighted tail drop 1844WWAN wireless wide area network 1845WWW world wide web 1846WYSIAYG what you see is all you get 1847WYSIWYG what you see is what you get 1848XBAR crossbar 1849XDMCP X Display Manager control protocol 1850XER XML encoding rules 1851XGA Extended Graphics Array 1852XHR XMLHttpRequest 1853XIP execute in place 1854XML Extensible Markup Language 1855XNA XNA's not acronymed 1856XNS Xerox network systems 1857XOR exclusive or 1858XP extreme programming 1859XSI X/Open System Interface 1860XSL extensible stylesheet language 1861XSLT extensible stylesheet language transformations 1862XSS cross site scripting 1863XT extended technology 1864XTACACS extended terminal access controller access-control system 1865XTI X/Open transport interface 1866XUL XML user interface language 1867YACC yet another compiler compiler 1868YAML YAML ain't markup language 1869YANG yet another next generation 1870YAWPFAPR you are welcome; please file a problem report 1871YP Yellow Pages 1872YTD year to date 1873ZAP ZFS attribute processor 1874ZBR zone bit recording 1875ZFOD zero-filled on demand 1876ZFS zettabyte file system 1877ZIF zero insertion force 1878ZIFS zero insertion force socket 1879ZIL ZFS intent log 1880ZMA zone multicast address 1881ZOI zero one infinity 1882ZOI zone of influence 1883ZPL ZFS Posix layer 1884ZVOL ZFS Volume 1885