acronyms.comp revision 1.365
1$NetBSD: acronyms.comp,v 1.365 2023/09/16 21:18:29 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 215CAN controller area network 216CARP Common Address Redundancy Protocol 217CAS column address strobe 218CAS compare and swap 219CAS computer algebra system 220CASE computer aided software engineering 221CAU control access unit 222CAV constant angular velocity 223CBC cipher block chaining 224CBR constant bit rate 225CC carbon copy 226CCC Chaos Computer Club 227CCD charge coupled device 228CCI co-channel interferer 229CCNUMA cache-coherent non-uniform memory access 230CCTL command completion time limit 231CD cache disable 232CD compact disc 233CDDA compact disc digital audio 234CDL compiler description language 235CDMA code division multiple access 236CDN content delivery network 237CDP Cisco Discovery Protocol 238CDRAM cache dynamic random access memory 239CER canonical encoding rules 240CE customer edge 241CF compact flash 242CFB cipher feedback 243CFG context-free grammar 244CFG control-flow graph 245CFI control-flow integrity 246CG control gate 247CGA Color Graphics Adapter 248CGI common gateway interface 249CGN Carrier-Grade NAT 250CHAP Challenge-Handshake Authentication Protocol 251CHFS chip file system 252CHS cylinder/head/sector 253CI continuous integration 254CI {common,component} interface 255CIA confidentiality, integrity, availability 256CIDR Classless Inter-Domain Routing 257CIF common intermediate format 258CIFS Common Internet File System 259CIL common intermediate language 260CIR carrier-to-interference ratio 261CIS contact image sensor 262CISC complex instruction set {computer,computing} 263CJK Chinese, Japanese, [and] Korean 264CLF common log format 265CLI command line interface 266CLI common language infrastructure 267CLR common language runtime 268CLS common language specification 269CLTT closed loop thermal throttling 270CLUT color look-up table 271CLV constant linear velocity 272CM configuration management 273CMA concert multithread architecture 274CMC chassis management controller 275CMC corrected machine check 276CMC certificate management over CMS 277CMS {configuration,content,course} management system 278CMS cryptographic message syntax 279CMI control {management,method} interface 280CMOS complementary metal-oxide-semiconductor 281CMP chip multi-processing 282CMS content management system 283CMYK cyan magenta yellow black 284CN {common,canonical} name 285CNA CVE Numbering Authority 286CNC computer numerical control 287CNR carrier-to-noise ratio 288COA change of authority 289COF current operating frequency 290COFDM coded orthogonal frequency division multiplexing 291COFF common object file format 292COM component object model 293COM computer on module 294COMA cache-only memory architecture 295CORBA common object request broker architecture 296COS class of service 297COW copy-on-write 298CP continuous pilot 299CPA chosen-plaintext attack 300CPB core performance boost 301CPC central processor complex 302CPC cpu performance counters 303CPE common phase error 304CPE common platform enumeration 305CPER common platform error record 306CPG clock pulse generator 307CPI cycles per instruction 308CPL current privilege level 309CPLD complex programmable logic device 310CPP C preprocessor 311CPS characters per second 312CPS continuation-passing style 313CPT command pass through 314CPU central processing unit 315CR carriage return 316CRC cyclic redundancy check 317CRDT conflict-free replicated data type 318CRL carrier recovery loop 319CRQC cryptanalytically relevant quantum computer 320CRLF carriage return line feed 321CSPM cloud security posture management 322CSU C start up 323CRT cathode ray tube 324CRTP curiously recurring template pattern 325CRUD create, read, update, and delete 326CS cable select 327CS chip select 328CS code segment 329CS computer science 330CSDL {common,conceptual} schema definition language 331CSI channel state information 332CSI common system interface 333CSMA carrier sense multiple access 334CSMA/CA carrier sense multiple access with collision avoidance 335CSMA/CD carrier sense multiple access with collision detection 336CSP communicating sequential processes 337CSP content security policy 338CSP constrain satisfaction problems 339CSP cryptographic service provider 340CSR control [and] status registers 341CSRG Computer Systems Research Group 342CSS cascading style sheets 343CST common spanning tree 344CSV comma-separated values 345CTF compact c type format 346CTM close to metal 347CTR counter [mode] 348CTS clear to send 349CTS common type system 350CUA common user access 351CUT coordinated universal time 352CV control voltage 353CVE common vulnerabilities and exposures 354CVS Concurrent Versions System 355DA destination address 356DAA distributed application architecture 357DAAP digital audio access protocol 358DAB digital audio broadcasting 359DAC digital [to] analog converter 360DAC discretionary access control 361DAD duplicate address detection 362DAE deterministic authenticated encryption 363DANE DNS-based Authentication of Named Entities 364DAO disk at once 365DAP Directory Access Protocol 366DAT digital audio tape 367DAT dynamic acceleration technology 368DB database 369DBA database administrator 370DBA dynamic bandwidth allocation 371DBB data bus buffer 372DBC design by contract 373DBL dynamic buffer limiting 374DBMS database management system 375DBS database server 376DC data center 377DC direct current 378DCC Direct Client-to-Client 379DCC direct cable connect 380DCD data carrier detect 381DCE data control equipment 382DCE distributed computing environment 383DCIM data center infrastructure management 384DCIM digital camera images 385DCL Digital Command Language 386DCOM distributed component object model 387DCOP Desktop COmmunication Protocol 388DCS data collection systems 389DCT discrete cosine transform 390DCU data cache unit 391DDC display data channel 392DDE dynamic data exchange 393DDI device drivers interface 394DDK device driver kit 395DDL data description language 396DDR double data rate 397DDS direct digital sound 398DDWG Digital Display Working Group 399DE debugging extensions 400DE desktop environment 401DEA data encryption algorithm 402DEC Digital Equipment Corporation 403DEK data encryption key 404DEP data execution prevention 405DER distinguished encoding rules 406DES Data Encryption Standard 407DF don't fragment 408DFA deterministic finite automaton 409DFC data flow control 410DFS depth first search 411DFS distributed file system 412DFSAN Data Flow Sanitizer 413DFT diagnostic function test 414DFT discrete Fourier transform 415DGL data generation language 416DGEMM double precision general matrix multiply 417DH Diffie-Hellman 418DHCP Dynamic Host Configuration Protocol 419DIA dedicated Internet access 420DIB device independent bitmap 421DIFS distributed inter-frame space 422DIMM dual inline memory module 423DIRT design in real time 424DKI driver/kernel interface 425DL diode logic 426DL discrete logarithm 427DL download 428DLCI data link connection identifier 429DLE data link escape 430DLL dynamic link library 431DLNA digital living network alliance 432DLP discrete logarithm problem 433DMA direct memory access 434DMI desktop management interface 435DMS document management system 436DMT discrete multitone modulation 437DMU data management layer 438DNARD Digital network appliance reference design 439DND drag and drop 440DNLC directory name lookup cache 441DNS Domain Name System 442DNSBL Domain Name System Block List 443DNSSEC DNS Security Extensions 444DOE distributed object environment 445DOF data over fibre 446DOM document object model 447DOS denial of service 448DOS disk operating system 449DP DisplayPort 450DPAA data path acceleration architecture 451DPC deferred procedure call 452DPCM differential pulse code modulation 453DPD dead peer detection 454DPDK data plane development kit 455DPI deep packet inspection 456DPI dots per inch 457DPL descriptor privilege level 458DPS Display PostScript 459DPST display power savings technology 460DRAAS disaster recovery as a service 461DRAM dynamic random access memory 462DRBG deterministic random bit generator 463DRI direct rendering infrastructure 464DRM digital rights management 465DRM direct rendering manager 466DRRS display refresh rate switching 467DS debug store 468DS differentiated services 469DS9000 DeathStation 9000 470DS9K DeathStation 9000 471DSA digital signature algorithm 472DSAP destination service access point 473DSB double-sideband modulation 474DSCP differentiated services code point 475DSDT differentiated system descriptor table 476DSF device special file 477DSL dataset and snapshot layer 478DSL digital subscriber line 479DSL domain specific language 480DSLAM digital subscriber line access multiplexer 481DSN delivery status notification 482DSO dynamic shared object 483DSP digital signal processor 484DSSS direct sequence spread spectrum 485DTB device tree blob 486DTC device tree compiler 487DTD document type definition 488DTE data terminal equipment 489DTE dumb terminal emulator 490DTL diode-transistor logic 491DTLS datagram transport layer security 492DTS device tree source 493DTS digital thermal sensor 494DUT device under test 495DVB digital video broadcasting 496DVCS distributed version control system 497DVD digital versatile disc 498DVFS dynamic voltage and frequency scaling 499DVI device independent 500DVI Digital Visual Interface 501DVR digital video recorder 502DWARF Debugging With Attributed Record Formats 503E-XER extended XML encoding rules 504EABI embedded-application binary interface 505EAI Email Address Internationalization 506EAI Enterprise Application Integration 507EAP Extensible Authentication Protocol 508EAPOL EAP over Lan 509EAV entity-attribute-value model 510EAV ethernet audio/video bridging 511EBCDIC Extended Binary Coded Decimal Interchange Code 512EBDA Extended BIOS Data Area 513EBNF extended backus-naur form 514EBR extended boot record 515EC elliptic curve 516ECC elliptic curve cryptography 517ECC error correction code 518ECDH elliptic curve Diffie-Hellman 519ECDL elliptic curve discrete logarithm 520ECDLP elliptic curve discrete logarithm problem 521ECDSA elliptic curve digital signature algorithm 522ECL emitter-coupled logic 523ECN explicit congestion notification 524ECP enhanced capability port 525ECS enhanced chip set 526ECS extended configuration space 527EDAC error detection and correction 528EDAT enhanced dynamic acceleration technology 529EdDSA Edwards curve digital signature algorithm 530EDGE explicit data graph execution 531EDID extended display identification data 532EDO extended data out 533EDS electronical data sheet 534EDSAC electronic delay storage automatic calculator 535EDVAC electronic discrete variable automatic computer 536EEE energy efficient ethernet 537EEE embrace, extend, extinguish 538EEPROM electrically erasable programmable read only memory 539EFI extensible firmware interface 540EFL emitter follower logic 541EFM eight to fourteen modulation 542EFS extent file system 543EGA Enhanced Graphics Adapter 544EGP exterior gateway protocol 545EH extension header 546EIDE enhanced IDE 547EISA extended industry standard architecture 548EINJ error injection table 549ELF executable and linking format 550ELS entry level system 551EMI electro-magnetic interference 552EMP electro-magnetic pulse 553EMR electro-magnetic radiation 554EMACS Editor MACroS 555ENIAC electronic numerical integrator and computer 556EOF end of file 557EOI end of interrupt 558EOIS end of interactive support 559EOL end of life 560EOL end of line 561EOT end of transmission 562EPIC explicitly parallel instruction computing 563EPP enhanced parallel port 564EPRML extended partial response, maximum likelihood 565EPROM erasable programmable read only memory 566EPT extended page tables 567ERC error recovery control 568ERD emergency recovery disk 569ERD entity relationship diagram 570ERE extended regular expression 571ERST error record serialization table 572ESAN Efficiency Sanitizer 573ESB enterprise service bus 574ESDI enhanced small disk interface 575ESDRAM enhanced synchronous dynamic random access memory 576ESI enclosure services interface 577ESS electronic switching system 578ESS extended service set 579ESSID extended service set identifier 580EST enhanced speedstep 581ETL extract, transform, load 582EU execution unit 583EULA end user license agreement 584FAT file allocation table 585FBRAM frame buffer random access memory 586FCIF full common intermediate format 587FCL fiber channel loop 588FCS frame check sequence 589FDC floppy disk controller 590FDD floppy disk drive 591FDDI fiber distributed data interface 592FDE full disk encryption 593FDT flattened device tree 594FEA finite element analysis 595FEC forward error correction 596FET field-effect transistor 597FF finite field 598FF form feed 599FFDH finite-field Diffie-Hellman 600FFH functional fixed hardware 601FFI foreign function interface 602FFM focus follows mouse 603FFS Fast File System 604FFS find first set 605FFT fast Fourier transform 606FG floating gate 607FHRP first hop redundancy protocol 608FHSS frequency hop spread spectrum 609FID frequency identifier 610FIFO first in, first out 611FILO first in, last out 612FIPS Federal Information Processing Standards 613FIR fast infrared 614FLOPS floating [point] operations per second 615FLOSS free/libre/open source software 616FM frequency modulation 617FMR false match rate 618FOSS free/open source software 619FPGA field programmable gate array 620FPM fast page mode 621FPR floating point register 622FPU floating point unit 623FQDN fully qualified domain name 624FRR false rejection rate 625FRU field replaceable unit 626FS file system 627FSB front side bus 628FSCK file system check 629FSF Free Software Foundation 630FSK frequency shift keying 631FSM finite-state machine 632FTA fault tree analysis 633FTL flash translation layer 634FTP File Transfer Protocol 635FTPS File Transfer Protocol Secure 636FTTH fiber to the home 637FUS fast user switching 638FWH firmware hub 639FWS folding white space 640GAL generic array logic 641GARP generic attribute registration protocol 642GAS generic address structure 643GC garbage collector 644GCC GNU Compiler Collection 645GCM Galois counter mode 646GCR group-coded recording 647GDI Graphics Device Interface 648GDT global descriptor table 649GECOS general comprehensive operating supervisor 650GEM graphics environment manager 651GEM graphics execution manager 652GEMM general matrix multiply 653GENA general event notification architecture 654GHC Glasgow Haskell compiler 655GHES generic hardware error source 656GIC generic interrupt controller 657GID group identifier 658GIF graphics interchange format 659GLBP gateway load balancing protocol 660GMCH graphics and memory controller hub 661GNU GNU's Not Unix 662GOP graphics output protocol 663GOT global offset table 664GPE general purpose event 665GPF general protection fault 666GPG GNU Privacy Guard 667GPL [GNU] General Public License 668GPR general purpose register 669GPS generalized processor sharing 670GPT GUID partition table 671GPU graphics processing unit 672GR golden ratio 673GRE generic routing encapsulation 674GRO generic receive offload 675GSI global system interrupt 676GSO generic send offload 677GUI graphical user interface 678GUID globally unique identifier 679GUS Gravis UltraSound 680GVFS git virtual file system 681HA high availability 682HAL hardware abstraction layer 683HAT hashed array tree 684HATEOAS hypermedia as the engine of application state 685HBA host bus adapter 686HCC Home Cable Computer 687HCCA Home Cable Computer Adaptor 688HCF halt and catch fire 689HCI host controller interface 690HCI human-computer interaction 691HCL hardware compatibility list 692HDCP High-bandwidth Digital Content Protection 693HDD hard disk drive 694HDL hardware description language 695HDMI High-Definition Multimedia Interface 696HDTV high-definition television 697HECI host embedded controller interface 698HEST hardware error source table 699HEVC high efficiency video coding 700HF high frequency 701HFM highest frequency mode 702HFS hierarchical file system 703HID human interface device 704HKDF HMAC-based key derivation function 705HKP HTTP Keyserver Protocol 706HLL high-level language 707HMA high memory area 708HMI human-machine interface 709HOOD hierarchical object oriented design 710HOTP HMAC-based one time password 711HP Hewlett-Packard 712HPC high performance computing 713HPD hot plug detection 714HPET high precision event timer 715HSM hardware security module 716HSM hierarchical storage management 717HSRP hot standby router protocol 718HT hyper-threading 719HTC hardware thermal control 720HTCC high temperature co-fired ceramic 721HTML HyperText Markup Language 722HTT hyper-threading technology 723HTTP Hypertext Transfer Protocol 724HTTPS Hypertext Transfer Protocol Secure 725HVM hardware virtual machine 726HVDS High-Voltage Differential Signaling 727HWASAN Hardware-assisted Address Sanitizer 728HZ Hertz 729I2O intelligent input/output 730IA information assurance 731IAAS infrastructure as a service 732IANA Internet Assigned Numbers Authority 733IAB Internet Architecture Board 734IBC iterated block cipher 735IBM International Business Machines 736IBPI international blinking pattern interpretation 737IBS instruction based sampling 738IBSS independent basic service set 739IC integrated circuit 740ICA independent computer architecture 741ICACLS integrity control access control lists 742ICB Internet Citizen's Band 743ICE in-circuit emulator 744ICE internal compiler error 745ICH I/O controller hub 746ICMP Internet Control Message Protocol 747ICT information and communications technology 748ICW initialization command word 749IDA Intel dynamic acceleration 750IDCMP Intuition direct communication message port 751IDCT inverse discrete cosine transform 752IDE integrated development environment 753IDE integrated drive electronics 754IDPS intrusion detection [and] prevention system 755IDRP inter-domain routing protocol 756IDS intrusion detection system 757IDT interrupt descriptor table 758IE Internet Explorer 759IEC International Electrotechnical Commission 760IEEE Institute of Electrical and Electronics Engineers 761IESG Internet Engineering Steering Group 762IETF Internet Engineering Task Force 763IF intermediate frequency 764IFCM isochronous flow control mode 765IFF Interchange File Format 766IFS internal field separator 767IGD Internet gateway device 768IGMP Internet Group Management Protocol 769IGP interior gateway protocol 770IHV independent hardware vendor 771IKE Internet key exchange 772ILM internal loopback mode 773ILOM integrated lights-out management 774ILP instruction level parallelism 775IM instant messaging 776IME input method editor 777IMAP Internet Message Access Protocol 778IMC integrated memory controller 779IMCR interrupt mode configuration register 780IMR interrupt mask register 781IMS information management system 782IMSI international mobile subscriber identity 783INCITS InterNational Committee for Information Technology Standards 784INODE index node 785IO input/output 786IOCTL input/output control 787IOM input/output managers 788IOMMU input/output memory management unit 789IOT Internet of Things 790IP Internet Protocol 791IP intellectual property 792IPC instructions per cycle 793IPC interprocess communication 794IPCF interprocess communication facility 795IPE integrated programming environment 796IPI intelligent peripheral interface 797IPI interprocessor interrupt 798IPL Initial Program Load 799IPL Interrupt Priority Level 800IPMB Intelligent Platform Management Bus 801IPMI Intelligent Platform Management Interface 802IPNG Internet Protocol, Next Generation 803IPS in-plane switching 804IPS intrusion prevention system 805IPSEC Internet Protocol Security 806IRC Internet Relay Chat 807IRDA infrared data association 808IRDP ICMP Router Discovery Protocol 809IR intermediate representation 810IRQ interrupt request 811IRQL interrupt request level 812IRR interrupt request register 813IRTF Internet Research Task Force 814IS information system 815ISA industry standard architecture 816ISA instruction set architecture 817ISE instant secure erase 818ISDN integrated services digital network 819ISI inter-symbol interference 820ISL initial system load 821ISM industrial, scientific, [and] medical 822ISMS information system management system 823ISN initial serial number 824ISO International Standards Organization 825ISOC Internet Society 826ISP Internet service provider 827ISR in-service register 828ISR interrupt service routine 829IST internal spanning tree 830IST interrupt stack table 831ISV independent software vendor 832IT information technology 833ITB Intel Turbo Boost 834ITIL information technology infrastructure library 835ITP in-target probe 836ITSM IT service management 837IV initialization vector 838IVT interrupt vector table 839JBOD just a bunch of disks 840JCL Job Control Language 841JFET junction [gate] field-effect transistor 842JIT just in time 843JPEG Joint Photographic Experts Group 844JRE Java Runtime Environment 845JSON JavaScript Object Notation 846JTAG joint test action group 847KASAN Kernel Address Sanitizer 848KASLR kernel address space layout randomization 849KB keyboard 850KB kilobyte 851KBD keyboard 852KBD kilobaud 853KCS keyboard controller style 854KEM key encapsulation mechanism 855KLOC thousand lines of code 856KMS kernel-mode setting 857KPI kernel programming interface 858KVA kernel virtual address 859KVM kernel virtual machine 860KVM kernel virtual memory 861KVM keyboard, video, [and] mouse 862L2CAP link layer control and adaptation protocol 863LAG link aggregation group 864LAMP Linux Apache MySQL {Perl,PHP,Python} 865LAN local area network 866LAPIC local advanced programmable interrupt controller 867LAR load access rights 868LBA logical block addressing 869LBNF labeled backus-naur form 870LBS location-based service 871LCD liquid crystal display 872LCP link control protocol 873LDA local delivery agent 874LDAP Lightweight Directory Access Protocol 875LDR light-dependent resistor 876LDT local descriptor table 877LE logical extent 878LED light emitting diode 879LELL low energy link layer 880LER label edge router 881LF line feed 882LF low frequency 883LFM lowest frequency mode 884LFN long file names 885LFO low-frequency oscillation 886LFS log-structured file system 887LFU least frequently used 888LHP loop heat pipe 889LIF logical interchange format 890LIFO last in, first out 891LILO LInux LOader 892LILO last in, last out 893LINT local interrupt 894LIR local Internet registry 895LISP LISt Processor 896LISP Locator/ID Separation Protocol 897LKM {Linux,loadable} kernel module 898LKML Linux kernel mailing list 899LL load linked 900LL/SC load linked/store conditional 901LLC logical link control 902LLD low-level design 903LLDD low-level design document 904LLDP link layer discovery protocol 905LLF low level format 906LLMNR link-local multicast name resolution 907LLVM Low Level Virtual Machine 908LM long mode 909LMCE local machine check exception 910LMI local management interface 911LMM link management mode 912LMP link management protocol 913LNO loop nest optimization 914LOC lines of code 915LOM lights-out management 916LPE Linux performance events 917LPC low pin count 918LPS local positioning system 919LRC longitudinal redundancy check 920LRM left-to-right mark 921LRO Large Receive Offload 922LRO left-to-right override 923LRU least recently used 924LS link state 925LSAN Leak Sanitizer 926LSB Linux standards base 927LSB least significant {bit,byte} 928LSI large scale integration 929LSL load segment limit 930LSM log structured merge 931LSN Large Scale NAT 932LSN log sequence number 933LSO large send offload 934LSR label switch router 935LTCC low temperature co-fired ceramic 936LTO linear tape-open 937LTO link time optimization 938LTR left to right 939LTR load task register 940LTR letter(-sized paper) 941LTS long term support 942LUA Lua Uppercase Accident 943LUN logical unit number 944LV logical volume 945LVM logical volume management 946LVT local vector table 947LVDS Low-Voltage Differential Signaling 948LWP light-weight process 949LZSS Lempel Ziv Storer Szymanski 950LZW Lempel Ziv Welch 951MAB MAC authentication bypass 952MAC mandatory access control 953MAC {media,medium} access control 954MAC message authentication {check,code} 955MADT multiple APIC descriptor table 956MAMR microwave-assisted magnetic recording 957MB megabyte 958MBA multi-boot agent 959MBR master boot record 960MBS megabits per second 961MC memory controller 962MCA machine check architecture 963MCA MicroChannel architecture 964MCC multiversion concurrency control 965MCE machine check exception 966MCGA Multi-Color Graphics Array 967MCH memory controller hub 968MCLAG multi-chassis link aggregation group 969MCM multi-chip module 970MCQ memory controlled queue 971MD machine-dependent 972MD MiniDisc 973MD-SAL model-driven service abstraction layer 974MDA mail delivery agent 975MDA Monochrome Display Adapter 976MDC Management Data Clock 977MDI Medium Dependent Interface 978MDI-X Medium Dependent Interface Crossover 979MDIO Management Data Input/Output 980MDMX MIPS Digital Media eXtension 981MDRAM multibank dynamic random access memory 982MESI modified, exclusive, shared, invalid 983MFC merge from current 984MFC Microsoft Foundation Classes 985MFM modified frequency modulation 986MFU most frequently used 987MGCP media gateway control protocol 988MHU message handling unit 989MI machine-independent 990MI machine interface 991MIB management information base 992MIC message integrity {check,code} 993MID mobile Internet device 994MIDI musical instrument digital interface 995MIF management information format 996MII media independent interface 997MIM man in the middle 998MIMD multiple instruction, multiple data 999MIME Multipurpose Internet Mail Extensions 1000MIMO multiple input multiple output 1001MIPS million instructions per second 1002MIPS Microprocessor without Interlocked Pipeline Stages 1003MISD multiple instruction, single data 1004MIT Massachusetts Institute of Technology 1005MITM man in the middle 1006ML machine language 1007ML machine learning 1008ML mailing list 1009ML markup language 1010ML maximum likelihood 1011MLAG multi-chassis link aggregation group 1012MLC multi-level cell 1013MLD multicast listener discovery 1014MLHP micro loop heat pipe 1015MLIR multi-level intermediate representation 1016MLO MMC loader 1017MMC multi-media card 1018MMF multi-mode fiber 1019MMIC monolithic microwave integrated circuit 1020MMIO memory mapped input/output 1021MMORPG massive multiplayer online role playing game 1022MMRP multiple MAC registration protocol 1023MMU memory management unit 1024MMX matrix math extension 1025MMX multimedia extension 1026MMX multiple math extension 1027MO magneto-optical 1028MOESI modified, owned, exclusive, shared, invalid 1029MOF maximum operating frequency 1030MOSFET metal-oxide-semiconductor field-effect transistor 1031MOSI modified, owned, shared, invalid 1032MP multi-platform 1033MP multiplayer 1034MP {multiprocessing,multiprocessor} 1035MPEG moving picture experts group 1036MPI message passing interface 1037MPLS Multiprotocol Label Switching 1038MPP massively parallel processor 1039MPS memory pool system 1040MPS multiprocessor specification 1041MQTT Message Queuing Telemetry Transport 1042MR modem ready 1043MRO method resolution order 1044MRP multiple registration protocol 1045MRU most recently used 1046MS Microsoft 1047MSAN Memory Sanitizer 1048MSB most significant {bit,byte} 1049MSC message sequence chart 1050MSE mean square error 1051MSF minutes seconds frames 1052MSI message signaled interrupt 1053MSI modified, shared, invalid 1054MSR {machine state,model-specific} register 1055MSS maximum segment size 1056MSTP Multiple Spanning Tree Protocol 1057MT machine translation 1058MTA mail transfer agent 1059MTBF mean time between failures 1060MTP media transfer protocol 1061MTRR memory type range register 1062MTTF mean time to failure 1063MTU maximum transmission unit 1064MUA mail user agent 1065MUD multi-user domain 1066MVCC multiversion concurrency control 1067MVR multicast VLAN registration 1068MVRP multiple VLAN registration protocol 1069MWE module width encoding 1070MX mail exchange 1071NACK negative acknowledgement 1072NAK negative acknowledgement 1073NAN neighbor awareness networking 1074NAN not a number 1075NAPT Network Address Port Translation 1076NAS network attached storage 1077NAT network address translation 1078NAV network allocation vector 1079NC numerical control 1080NC-SI network controller sideband interface 1081NCO numerically-controlled oscillator 1082NCP Network Control Protocol 1083NCSI network connectivity status indicator 1084NCQ native command queuing 1085ND neighbor discovery 1086NDFA nondeterministic finite automaton 1087NDIS network driver interface specification 1088NE numeric error 1089NEWS Network extensible Window System 1090NFA nondeterministic finite automaton 1091NFC near-field communication 1092NFCI no functional change intended 1093NFS network file system 1094NFV network function virtualization 1095NHACP NABU HCCA Application Communication Protocol 1096NIA next instruction address 1097NIC network information center 1098NIC network interface card 1099NIDS network intrusion detection system 1100NIP network interface protocol 1101NIPS network intrusion prevention system 1102NIS network information service 1103NIST National Institute of Standards and Technology 1104NLS native language support 1105NMI non-maskable interrupt 1106NNTP Network News Transfer Protocol 1107NMR nonce-misuse resistance 1108NOC network operations center 1109NOP no operation 1110NOS network operating system 1111NP nondeterministic polynomial time 1112NRND not recommended for new designs 1113NRZ non-return to zero 1114NSA nation-state adversary 1115NSA no such agency 1116NSA National Security Agency 1117NTM non-deterministic Turing machine 1118NTP Network Time Protocol 1119NUMA non-uniform memory access 1120NURBS non-uniform rational basis spline 1121NVMM NetBSD Virtual Machine Monitor 1122NVMM non-volatile main memory 1123NVRAM non-volatile random access memory 1124NW not write-through 1125NX no execute 1126OAEP optimal asymmetric encryption padding 1127OAM operations, administration, and {management,maintenance} 1128OBO off by one 1129OBOE off by one error 1130OCL object constraint language 1131OCR optical character recognition 1132ODBC Open Database Connectivity 1133ODE offline device environment 1134ODI open data-link interface 1135ODM object data manager 1136ODCM on-demand clock modulation 1137ODMR on-demand mail relay 1138ODT on-die termination 1139OEM original equipment manufacturer 1140OFB output feedback 1141OFDM orthogonal frequency division multiplexing 1142OFET organic field-effect transistor 1143OLAP online analytical processing 1144OLE object linking and embedding 1145OLTP online transaction processing 1146ONCE on-{chip,circuit} emulation 1147ONFI open nand flash interface 1148OO OpenOffice 1149OO object oriented 1150OOB out of band 1151OOE out of order execution 1152OOM out of memory 1153OOO OpenOffice.org 1154OOP object oriented programming 1155OOPS object oriented programming systems 1156OOSE object oriented software engineering 1157OPM operations per minute 1158OPS operations per second 1159OQL Object Query Language 1160ORB object request broker 1161ORM object-relational mapping 1162OS operating system 1163OSD object-based storage device 1164OSD open source definition 1165OSF open software foundation 1166OSI Open Source Initiative 1167OSI open systems interconnection 1168OSPF open shortest path first 1169OSPM OS power management 1170OSS open sound system 1171OSS open source software 1172OSVW operating system visible workarounds 1173OTP one time password 1174OTP open telecom platform 1175OU organizational unit 1176OUI organizationally unique identifier 1177OWASP Open Web Application Security Project 1178OWL Web Ontology Language 1179P2P PCI to PCI 1180P2P peer to peer 1181PA phase accumulator 1182PA physical address 1183PAAS platform as a service 1184PAC phase-amplitude converter 1185PAE physical address extension 1186PAGP port aggregation protocol 1187PAL phase alternating line 1188PAL programmable array logic 1189PAM pluggable authentication modules 1190PAM pulse amplitude modulation 1191PAP password authentication protocol 1192PAT page attribute table 1193PAT port address translation 1194PATA parallel ATA 1195PAX portable archive exchange 1196PBE pending break encoding 1197PBE programming by example 1198PBR partition boot record 1199PBX private branch exchange 1200PC personal computer 1201PC program counter 1202PCB printed circuit board 1203PCB process control block 1204PCB Protocol Control Block 1205PCBC propagating cipher block chaining 1206PCC Portable C Compiler 1207PCD page-level cache disable 1208PCE path computation element 1209PCE performance-monitor counter enable 1210PCEP Path Computation Element Protocol 1211PCH platform controller hub 1212PCI peripheral component interconnect 1213PCM phase change memory 1214PCM pulse code modulation 1215PCMCIA Personal Computer Memory Card International Association 1216PCP Port Control Protocol 1217PD public domain 1218PDA personal digital assistant 1219PDA pushdown automaton 1220PDAG propositional directed acyclic graph 1221PDB power distribution board 1222PDF portable document format 1223PDM pulse-duration modulation 1224PDN pull-down network 1225PDP page {descriptor,directory} page 1226PDS product data sheet 1227PDU protocol data unit 1228PE protection enable 1229PE provider edge 1230PE portable executable 1231PEAP Protected EAP 1232PECI platform environment control interface 1233PEP protocol extension protocol 1234PER packed encoding rules 1235PFS perfect forward secrecy 1236PGAS partitioned global address space 1237PGE page global enable 1238PGO profile guided optimization 1239PGP Pretty Good Privacy 1240PHB PCI host bridge 1241PHP PHP: Hypertext Preprocessor 1242PIC performance instrumentation counters 1243PIC position independent code 1244PIC programmable interrupt controller 1245PICNIC problem in chair, not in computer 1246PID process id 1247PIE position independent executable 1248PIL Priority Interrupt Level 1249PIM personal information manager 1250PIM platform-independent model 1251PIO programmed input/output 1252PIPT physically indexed, physically tagged 1253PIR private information retrieval 1254PIQ prefetch input queue 1255PIT programmable interrupt timer 1256PIV personal identity verification 1257PIX Private Internet eXchange 1258PKCS public-key cryptography standards 1259PKI public key infrastructure 1260PLC programmable logic controller 1261PLD programmable logic device 1262PLL phase locked loop 1263PLRU pseudo LRU 1264PLT procedure linkage table 1265PLTM package level thermal management 1266PM power management 1267PM {phase,pulse} modulation 1268PMC performance monitoring counters 1269PME power management event 1270PMEG page map entry group 1271PMI performance monitoring infrastructure 1272PMI platform management interrupt 1273PMIC power management integrated circuit 1274PMIO port-mapped input/output 1275PMT photo-multiplier tube 1276PMU performance monitoring units 1277PMU power management unit 1278PNG portable network graphics 1279PNP plug and play 1280POE power over ethernet 1281POF probability of failure 1282POP Post Office Protocol 1283POP power on password 1284POR plan of record 1285POSIX Portable Operating System Interface [for Unix] 1286POST power on self test 1287POTS plain old telephone system 1288POWER Performance Optimization With Enhanced RISC 1289POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1290PP pair programming 1291PPB PCI [to] PCI bridge 1292PPC PowerPC 1293PPC Power Performance Computing 1294PPI pixels per inch 1295PPM pages per minute 1296PPP Point-to-Point Protocol 1297PPPOA Point-to-Point Protocol over ATM 1298PPPOE Point-to-Point Protocol over Ethernet 1299PPR processor programming reference 1300PPT powerpoint 1301PPT punched paper tape 1302PPU physics processing unit 1303PQC post-quantum cryptography 1304PRAM Parameter RAM 1305PRBS pseudorandom bit sequence 1306PRG pseudorandom generator 1307PRF pseudorandom function [family] 1308PRML partial response, maximum likelihood 1309PRN pseudorandom {noise,number} 1310PRNG pseudorandom number generator 1311PROM programmable read only memory 1312PRP pseudorandom permutation 1313PRU Programmable Realtime Unit 1314PS PostScript 1315PSD power spectral density 1316PSE page size extensions 1317PSK phase shift keying 1318PSK pre-shared key 1319PSTN public switched telephone network 1320PSW program status word 1321PTE page table entry 1322PTLA pseudo top level aggregator 1323PTP page table page 1324PTV perceived target value 1325PU processing unit 1326PUC personal unblocking code 1327PUN physical unit number 1328PV physical volume 1329PVC permanent virtual circuit 1330PVG physical volume group 1331PVI protected-mode virtual interrupt 1332PVRST Per-VLAN rapid spanning tree 1333PVST Per-VLAN Spanning Tree 1334PWM pulse width modulation 1335PXE preboot execution environment 1336QA quality assurance 1337QAM quadrature amplitude modulation 1338QAM quality assurance management 1339QBE query by example 1340QC quality control 1341QDI quasi delay insensitive 1342QCIF quarter common intermediate format 1343QOI quality of implementation 1344QOI quick order interface 1345QOS quality of service 1346QVL qualified vendor list 1347R/O read only 1348R/W read/write 1349RA receiver address 1350RA remote assistance 1351RA resource affinity 1352RA router advertisement 1353RAD rapid application development 1354RADIUS remote authentication dial-in user service 1355RAID redundant array of {independent,inexpensive} disks 1356RAII resource acquisition is initialization 1357RAM random access memory 1358RAS reliability, availability and serviceability 1359RAS remote access service 1360RAS restartable atomic sequence 1361RAS row address strobe 1362RAT register allocation table 1363RAT remote access trojan 1364RBF radial basis function 1365RBL reputation block list 1366RBL real-time blackhole list 1367RBNF routing backus-naur form 1368RBT red-black tree 1369RC release candidate 1370RC remote control 1371RC run commands 1372RCS Revision Control System 1373RCU read, copy, update 1374RDB Rigid Disk Block 1375RDBMS relational database management system 1376RDF Resource Description Framework 1377RDM relational data model 1378RDMA remote direct memory access 1379RDP remote desktop protocol 1380RDRAM Rambus DRAM 1381RE regular expression 1382REPL read, evaluate, print, loop 1383REST representational state transfer 1384RF radio frequency 1385RFB remote frame buffer 1386RFI radio frequency interference 1387RFO request for ownership 1388RFU reserved for future use 1389RGB red green blue 1390RGBA red green blue alpha 1391RGMII reduced gigabit media independent interface 1392RH read hit 1393RHEL Red Hat Enterprise Linux 1394RHL Red Hat Linux 1395RIB routing information base 1396RIFF Resource Interchange File Format 1397RIP Raster Image Processor 1398RIP Routing Information Protocol 1399RIR regional Internet registry 1400RISC reduced instruction set {computer,computing} 1401RKM ROM Kernel Manual 1402RLE run length encoding 1403RLL run length limited 1404RLO right-to-left override 1405RM read miss 1406RMCP Remote Management Control Protocol 1407RMI remote method invocation 1408RMO Relaxed Memory Ordering 1409RMPM rapid memory power management 1410RMS root mean square 1411RMW read, modify, write 1412RNG random number generator 1413ROM read only memory 1414ROP return-oriented programming 1415RPC remote procedure call 1416RPG Report Program Generator 1417RPKI resource PKI 1418RPL requested privilege level 1419RPM revolutions per minute 1420RPN reverse Polish notation 1421RPVST Rapid Per-VLAN Spanning Tree 1422RR random replacement 1423RR round robin 1424RS relay station 1425RSA Rivest, Shamir, [and] Adleman 1426RSC Receive Segment Coalescing 1427RSIP Realm Specific IP 1428RSN Robust Secure Network 1429RSS really simple syndication 1430RSS Receive Side Scaling 1431RSS residual sum of squares 1432RSTP Rapid Spanning Tree Protocol 1433RT real time 1434RTC real time clock 1435RTC real time computing 1436RTF rich text format 1437RTL register transfer language 1438RTL resistor-transistor logic 1439RTL right to left 1440RTOS real time operating system 1441RTP Real-time Transport Protocol 1442RTS request to send 1443RTT round trip time 1444RTTI run-time type information 1445RUP rational unified process 1446RW Rabin-Williams 1447RWM read-write memory 1448RX {receive,receiver} 1449S/PDIF Sony/Philips Digital Interface Format 1450SA security advisory 1451SA security association 1452SA source address 1453SA structured analysis 1454SAAS software as a service 1455SABRE Semi-automated business research environment 1456SACD super audio compact disc 1457SAD security association database 1458SAF-TE SCSI accessed fault-tolerant enclosure 1459SAGE Semi-automated ground environment 1460SAL {service,system} abstraction layer 1461SAM serial access memory 1462SAM sum addressed memory 1463SAML security assertion markup language 1464SAN storage area network 1465SAP service access point 1466SAPIC streamlined advanced programmable interrupt controller 1467SASD structured analysis, structured design 1468SASI Shugart Associates System Interface 1469SASL simple authentication [and] security layer 1470SATA serial advanced technology attachment 1471SAX simple API for XML 1472SB sound blaster 1473SBSA server base system architecture 1474SBU standard build unit 1475SC store conditional 1476SCA source code analyzer 1477SCADA supervisory control and data acquisition 1478SCC single chip cloud 1479SCC source code control 1480SCCP skinny call control protocol 1481SCCS Source Code Control System 1482SCI scalable coherent interface 1483SCI system control interrupt 1484SCIM smart common input method 1485SCM software configuration management 1486SCM source code management 1487SCM storage-class memory 1488SCO synchronous connection orientated 1489SCP secure copy 1490SCP system control processor 1491SCPI system control and power interface 1492SCSI Small Computer System Interface 1493SCTP Stream Control Transmission Protocol 1494SDDC software defined data center 1495SDEI software delegated exception interface 1496SDI symbol deinterleave 1497SDK software development kit 1498SDL Simple Declarative Language 1499SDL Simple Direct-media Layer 1500SDLC {software,system,systems} development life cycle 1501SDN software defined networking 1502SDP Session Description Protocol 1503SDR software defined radio 1504SDRAM synchronous dynamic random access memory 1505SDS software defined storage 1506SDT syntax-directed translation 1507SEA synchronous external abort 1508SEGV segmentation violation 1509SED self-encrypting drive 1510SED stream editor 1511SEMB serial ATA enclosure management bridge 1512SEO search engine optimization 1513SES SCSI enclosure services 1514SFC sequential function chart 1515SFI simple firmware interface 1516SFI software fault isolation 1517SFTP SSH File Transfer Protocol 1518SFTP Serial File Transfer Protocol 1519SFTP Simple File Transfer Protocol 1520SGI Silicon Graphics, Inc 1521SGI software generated interrupt 1522SGMII serial gigabit media independent interface 1523SGPIO serial general purpose input/output 1524SGRAM synchronous graphics random access memory 1525SHA secure hash algorithm 1526SICP structure and interpretation of computer programs 1527SIDH supersingular isogeny Diffie-Hellman 1528SIEM security information and event management 1529SIF source input format 1530SIFS short inter-frame space 1531SIM subscriber identity module 1532SIMD single instruction, multiple data 1533SIMM single inline memory module 1534SIP Session Initiation Protocol 1535SIR signal-to-interference ratio 1536SIR slow infrared 1537SISD single instruction, single data 1538SIV synthetic intialization vector 1539SLAAC stateless address auto-configuration 1540SLC single-level cell 1541SLDRAM synchronous-link dynamic random access memory 1542SLED single large expensive disk 1543SLI scalable link interface 1544SLI scan-line interleave 1545SLIC system license internal code 1546SLOC source lines of code 1547SLRU segmented LRU 1548SMA smart memory access 1549SMAF system management action field 1550SMAP Simple Mail Access Protocol 1551SMAP supervisor mode access prevention 1552SMART self-monitoring analysis and reporting technology 1553SMB Server Message Block 1554SMB system management bus 1555SMBIOS System Management BIOS 1556SMC system management controller 1557SMD storage module device 1558SMEP supervisor mode execution protection 1559SMF single mode fiber 1560SMI structure of management information 1561SMI system management interrupt 1562SMM system management mode 1563SMP serial management protocol 1564SMP symmetric multiprocessing 1565SMR shingled magnetic recording 1566SMR state machine replication 1567SMT simultaneous multithreading 1568SMTP Simple Mail Transfer Protocol 1569SMU system management unit 1570SNA systems network architecture 1571SNAP Sub-Network Access Protocol 1572SNIA Storage Networking Industry Association 1573SNMP Simple Network Management Protocol 1574SNR signal-to-noise ratio 1575SOA service oriented architecture 1576SOAP Simple Object Access Protocol 1577SOC system on chip 1578SOF start of frame 1579SOH start of header 1580SOHO small office/home office 1581SOL serial over LAN 1582SOM system on module 1583SP service pack 1584SP stack pointer 1585SPA storage pool allocator 1586SPAN switched port analyzer 1587SPARC scalable processor architecture 1588SPARQL SPARQL Protocol and RDF Query Language 1589SPD security policy database 1590SPD serial presence detect 1591SPDIF Sony/Philips digital interface format 1592SPI serial peripheral interface 1593SPI stateful packet inspection 1594SPIR standard portable intermediate representation 1595SPL secondary program loader 1596SPL spinlock 1597SPL system interrupt priority level 1598SPMD single process, multiple data 1599SPR special purpose register 1600SPT sectors per track 1601SQA software quality assurance 1602SQCIF sub quarter common intermediate format 1603SQL Structured Query Language 1604SRAM static random access memory 1605SRC sample rate conversion 1606SRP SCSI RDMA protocol 1607SRR shaped round robin 1608SRTP Secure Real-time Transport Protocol 1609SS self-snoop 1610SS stack segment 1611SSA static single assignment 1612SSAP source service access point 1613SSB single-sideband modulation 1614SSC spread spectrum clock 1615SSD solid state drive 1616SSE streaming SIMD extensions 1617SSFDC solid state floppy disc card 1618SSH secure shell 1619SSI server side includes 1620SSID service set identifier 1621SSTP secure socket tunneling protocol 1622SSL secure sockets layer 1623SSP stack smashing protection 1624STC software thermal control 1625STD state transition diagram 1626STM software transactional memory 1627STOMP Streaming Text Oriented Messaging Protocol 1628STP Spanning Tree Protocol 1629STP shielded twisted pair 1630STRG spanning tree root guard 1631SUN Stanford University Network 1632SUS Single Unix Specification 1633SUT system under test 1634SVC switched virtual circuit 1635SVG scalable vector graphics 1636SVGA Super Video Graphics Array 1637SVI {switch,switched} virtual interface 1638SVM secure virtual machine 1639SVM support vector machine 1640SVR System V Release 1641SVS Separate Virtual Space 1642SWF Shockwave Flash 1643SWIG simplified wrapper [and] interface generator 1644SYR symbol timing recovery 1645TA test assertion 1646TA transmitter address 1647TACACS terminal access controller access-control system 1648TAI international atomic time 1649TAO track at once 1650TAOCP The Art of Computer Programming 1651TAP Test Anything Protocol 1652TAS test and set 1653TB terabyte 1654TBNF transitional backus-naur form 1655TCB trace capture buffer 1656TCB trusted computing base 1657TCC thermal control circuit 1658TCL tool command language 1659TCP Transmission Control Protocol 1660TCQ tagged command queueing 1661TDC time [to] digital converter 1662TDD test-driven development 1663TDD time division duplex 1664TDM time division multiplexing 1665TDMA time division multiple access 1666TDOA time difference of arrival 1667TDP thermal design {point,power} 1668TDR time-domain reflectometry 1669TECO Text Editor and Corrector 1670TEE Trusted Execution Environment 1671TFT thin film transistor 1672TFTP Trivial File Transfer Protocol 1673TIAS try it and see 1674TIFF tagged image file format 1675TITS try it to see 1676TK temporal key 1677TKIP Temporal Key Integrity Protocol 1678TLA top level aggregator 1679TLB translation lookaside buffer 1680TLD top level domain 1681TLER time-limited error recovery 1682TLI transport layer interface 1683TLS thread local storage 1684TLS transport layer security 1685TM Turing machine 1686TM thermal monitor 1687TMG transmogrifier 1688TMDS transition minimized differential signaling 1689TMO timeout 1690TOD time of day 1691TOE TCP offload engine 1692TOFU trust on first use 1693TOS terms of service 1694TOS trusted operating system 1695TOS type of service 1696TOTP time-based one time password 1697TP transaction processing 1698TPI tracks per inch 1699TPM transactions per minute 1700TPM trusted platform module 1701TPR task priority register 1702TPS transactions per second 1703TPS transmission parameters signaling 1704TR task register 1705TR token ring 1706TRL timing recovery loop 1707TRNG true random number generator 1708TS terminal services 1709TS time series 1710TS time stamp 1711TS transport stream 1712TSAN Thread Sanitizer 1713TSC time stamp counter 1714TSD time stamp disable 1715TSDB time series database 1716TSL test, set, lock 1717TSO time sharing option 1718TSO TCP segmentation offload 1719TSO Total Store Ordering 1720TSP Time-Stamp Protocol 1721TSP Tunnel Setup Protocol 1722TSP time synchronization protocol 1723TSP traveling salesman problem 1724TSS task state segment 1725TSV tab-separated values 1726TTL time to live 1727TTL transistor-transistor logic 1728TTM translation table maps 1729TTY teletype 1730TU translation unit 1731TUI {terminal,text-based,textual} user interface 1732TX {transmit out,transmitter} 1733TXG transaction group 1734TZ time zone 1735UAC user {access,account} control 1736UAF use-after-free 1737UART universal asynchronous receiver/transmitter 1738UAT user acceptance testing 1739UB undefined behavior 1740UBSAN Undefined Behavior Sanitizer 1741UC uncacheable 1742UCS uniform-cost search 1743UCS unified computing system 1744UCS universal coded character set 1745UDI uniform driver interface 1746UDMA ultra DMA 1747UDO ultra density optical 1748UDP User Datagram Protocol 1749UDS Unix Domain Socket 1750UEFI unified extensible firmware interface 1751UFO UDP fragmentation offload 1752UFS Unix File System 1753UGA universal graphics adapter 1754UI unit interval 1755UI user interface 1756UICC universal integrated circuit card 1757UID unique identifier 1758UID user identifier 1759UL upload 1760UMA uniform memory access 1761UMA upper memory area 1762UMB upper memory block 1763UML unified modeling language 1764UMPC ultra-mobile PC 1765UPNP universal plug and play 1766UPS uninterruptible power supply 1767URI uniform resource identifier 1768URL uniform resource locator 1769URN uniform resource name 1770USART universal synchronous/asynchronous receiver/transmitter 1771USB universal serial bus 1772USWC uncacheable speculative write combining 1773UT unit test 1774UTC coordinated universal time 1775UTF unicode transformation formats 1776UTP unshielded twisted pair 1777UTS UNIX time-sharing 1778UUCP Unix-to-Unix Copy Protocol 1779UUID universally unique identifier 1780UUOC useless use of cat 1781UUT unit under test 1782UX user experience 1783VA vertical alignment 1784VA virtual address 1785VA volt-ampere 1786VAX virtual address extension 1787VB Visual Basic 1788VBR volume boot record 1789VCA variable-gain amplifier 1790VCC common collector voltage 1791VCCP virtual chassis control protocol 1792VCF voltage-controlled filter 1793VCM virtual channel memory 1794VCO voltage-controlled oscillator 1795VCP virtual chassis port 1796VCS version control system 1797VDPAU Video Decode and Presentation API for Unix 1798VES virtual execution system 1799VESA Video Electronics Standards Association 1800VFO variable-frequency oscillator 1801VFS virtual file system 1802VG volume group 1803VGA Video Graphics Array 1804VHDCI very high density cable interconnect 1805VID {VLAN,voltage level} identifier 1806VIM Vi IMproved 1807VIPT virtually indexed, physically tagged 1808VIVT virtually indexed, virtually tagged 1809VLAN virtual local area network 1810VLD variable-length decoding 1811VLIW very long instruction word 1812VLSI very large scale integration 1813VLSM variable length subnet mask 1814VM virtual {machine,memory} 1815VME virtual mode extension 1816VMX vector multimedia extensions 1817VMX virtual machine extensions 1818VNC virtual network computing 1819VOD video on demand 1820VPD vital product data 1821VPN virtual private network 1822VPWS virtual private wire service 1823VR virtual reality 1824VRAM video random access memory 1825VRF virtual routing and forwarding 1826VRM voltage regulator module 1827VROC Virtual RAID On CPU 1828VRRP Virtual Router Redundancy Protocol 1829VSTP VLAN Spanning Tree Protocol 1830VTP VLAN Trunking Protocol 1831VXFS Veritas file system 1832VXVM Veritas volume manager 1833W watt 1834W3C World Wide Web Consortium 1835WAFL write anywhere file layout 1836WAMP Web Application Messaging Protocol 1837WAN wide area network 1838WAP Wireless Application Protocol 1839WAP wireless access point 1840WDM Windows Driver Model 1841WDDM Windows Display Driver Model 1842WDT watchdog timer 1843WEP Wired Equivalent Privacy 1844WFI wait for interrupt 1845WFQ weighted fair queuing 1846WH write hit 1847WHEA Windows hardware error architecture 1848WIFI wireless fidelity 1849WLAN wireless local area network 1850WM write miss 1851WMF Windows meta file 1852WMI Windows Management Instrumentation 1853WOL Wake-on-LAN 1854WOM Wake-on-Modem 1855WOR Wake-on-Ring 1856WORM write once read many 1857WP WordPerfect 1858WP word processor 1859WP write protect 1860WPA Wi-Fi Protected Access 1861WPA2 Wi-Fi Protected Access II 1862WPAD web proxy auto-discovery protocol 1863WPS Wi-Fi Protected Setup 1864WRAM window random access memory 1865WS web services 1866WTC write through caching 1867WTD weighted tail drop 1868WWAN wireless wide area network 1869WWW world wide web 1870WYSIAYG what you see is all you get 1871WYSIWYG what you see is what you get 1872XBAR crossbar 1873XDMCP X Display Manager control protocol 1874XER XML encoding rules 1875XGA Extended Graphics Array 1876XHR XMLHttpRequest 1877XIP execute in place 1878XML Extensible Markup Language 1879XNA XNA's not acronymed 1880XNS Xerox network systems 1881XOR exclusive or 1882XP extreme programming 1883XSI X/Open System Interface 1884XSL extensible stylesheet language 1885XSLT extensible stylesheet language transformations 1886XSS cross site scripting 1887XT extended technology 1888XTACACS extended terminal access controller access-control system 1889XTI X/Open transport interface 1890XUL XML user interface language 1891YACC yet another compiler compiler 1892YAML YAML ain't markup language 1893YANG yet another next generation 1894YAWPFAPR you are welcome; please file a problem report 1895YP Yellow Pages 1896YTD year to date 1897ZAP ZFS attribute processor 1898ZBR zone bit recording 1899ZFOD zero-filled on demand 1900ZFS zettabyte file system 1901ZIF zero insertion force 1902ZIFS zero insertion force socket 1903ZIL ZFS intent log 1904ZMA zone multicast address 1905ZOI zero one infinity 1906ZOI zone of influence 1907ZPL ZFS Posix layer 1908ZVOL ZFS Volume 1909