acronyms.comp revision 1.368
1$NetBSD: acronyms.comp,v 1.368 2023/09/21 13:38:03 jschauma Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABE attribute-based encryption 8ABI application binary interface 9ABNF augmented backus-naur form 10ABR available bit rate 11ABRT automatic bug reporting tool 12AC alternating current 13ACI adjacent channel interferer 14ACID atomicity, consistency, isolation, durability 15ACK Amsterdam compiler kit 16ACK acknowledgement 17ACL access control list 18ACL active current loop 19ACL asynchronous connection less 20ACP auxiliary control {process,program} 21ACPI advanced configuration and power interface 22ACS access control set 23ACU automatic calling unit 24ADB Apple desktop bus 25ADC analog [to] digital converter 26ADD acronym driven development 27ADDDC adaptive double DRAM device correction 28ADO active data objects 29ADP automatic data processing 30ADPCM adaptive differential pulse code modulation 31ADS alternate data stream 32ADSL asymmetric digital subscriber line 33ADT abstract data type 34AEAD authenticated encryption with associated data 35AEDC advanced error detection and correction 36AER advanced error reporting 37AES Advanced Encryption Standard 38AFP Apple Filing Protocol 39AFS Andrew File System 40AGC automatic gain control 41AGP accelerated graphics port 42AI analog input 43AI artificial intelligence 44AL access list 45AL active link 46ALE address latch enable 47ALPN application-layer protocol negotiation 48ALS ambient light sensor 49ALSA advanced Linux sound architecture 50ALU arithmetic and logical unit 51ALUA asymmetric logical unit access 52AM access method 53AM alignment mask 54AM amplitude modulation 55AMD Advanced Micro Devices Inc 56AMDD Agile model-driven development 57AMI alternate mark inversion 58AMP asymmetric multiprocessing 59AMQP advanced message queuing protocol 60AMT active management technology 61AN Arabic number 62ANR application not responding 63ANSI American National Standards Institute 64AO analog output 65AOC add-on card 66AOL Alert-on-LAN 67AOS add or subtract 68AOT ahead of time 69AP access point 70AP application processor 71APFS Apple file system 72API application programming interface 73APEI ACPI platform error interface 74APIC advanced programmable interrupt controller 75APIPA automatic private IP addressing 76APM advanced power management 77APM application performance management 78APU accelerated processing unit 79APT advanced persistent threat 80AQM active queue management 81ARAT always running APIC timer 82ARC adaptive replacement cache 83ARC Advanced RISC Computing 84ARC automatic reference counting 85ARM Advanced RISC Machines 86ARP Address Resolution Protocol 87ARPA Advanced Research Projects Agency 88ARQ automatic repeat request 89ARR address range register 90ARU audio response unit 91AS autonomous system 92ASA Adaptive Security Appliance 93ASAN Address Sanitizer 94ASC advanced smart cache 95ASCII American Standard Code for Information Interchange 96ASD agile software development 97ASE advanced software environment 98ASF alert standard format 99ASIC application-specific integrated circuit 100ASK amplitude shift keying 101ASLR address space layout randomization 102ASN autonomous system number 103ASP active server pages 104ASP auxiliary storage pool 105ASPM active state power management 106ASQ automated software quality 107ASR address space register 108ASR Apple software restore 109AST abstract syntax tree 110AST asynchronous system trap 111AT access time 112AT advanced technology 113ATA advanced technology attachment 114ATAPI advanced technology attachment packet interface 115ATC address translation cache 116ATF ARM trusted firmware 117ATF automated testing framework 118ATM asynchronous transfer mode 119ATX advanced technology extended 120AV anti virus 121AVB audio video bridging 122AVL Adelson-Velsky-Landis 123AVX advanced vector extensions 124AWDL Apple wireless direct link 125BA byte align 126BAL basic assembly language 127BAR base address register 128BBS bulletin board system 129BCC blind carbon copy 130BCD binary coded decimal 131BCH boot console handler 132BCR byte count register 133BCS base configuration space 134BD baud 135BDD binary decision diagram 136BDI bit deinterleave 137BDUF big design up front 138BEDO burst extended data output 139BER basic encoding rules 140BER bit error {rate,ratio} 141BERT boot error record table 142BFD bidirectional forwarding detection 143BFD binary {file,format} descriptor 144BFKL big fscking kernel lock 145BFS breadth-first search 146BFT binary file transfer 147BGA ball grid array 148BGP Border Gateway Protocol 149BGPSEC BGP Security 150BIND Berkeley Internet Name Daemon 151BIOS Basic Input/Output System 152BIOS built-in operating system 153BIST built-in self-test 154BIU bus interface unit 155BKDG BIOS and kernel developer's guide 156BLAS basic linear algebra subprograms 157BLC back light control 158BLE Bluetooth low energy 159BLOB binary large object 160BM bus master 161BMC baseboard management controller 162BMP basic multilingual plane 163BMP bitmap image file 164BMIC bus master interface controller 165BN boundary neutral 166BNF Backus-Naur form 167BO binary output 168BOF beginning of file 169BOM beginning of message 170BOM byte order mark 171BP base pointer 172BP boot processor 173BPB BIOS parameter block 174BPDU bridge protocol data unit 175BPF Berkeley Packet Filter 176BPI bits per inch 177BPM business process modelling 178BPS bits per second 179BPSK binary phase shift keying 180BQP bounded-error quantum polynomial time 181BQS Berkeley quality software 182BRE basic regular expression 183BS backspace 184BS binary sequence 185BSA basic service area 186BSD Berkeley Software Distribution 187BSDP Boot Service Discovery Protocol 188BSF bit scan forward 189BSOD blue screen of death 190BSP binary space partition 191BSP board support package 192BSP bootstrap processor 193BSR bit scan reverse 194BSS basic service set 195BSS block started by symbol 196BSSID basic service set identifier 197BT BitTorrent 198BT Bluetooth 199BT bit test 200BTC bit test [and] complement 201BTM bus transport mechanism 202BTR bit test [and] reset 203BTS bit test [and] set 204BTS bug tracking system 205BW bandwidth 206BWM block-write mode 207BUAG big ugly ASCII graphic 208CA certificate authority 209CAC cryptographic access control 210CACLS change access control lists 211CAD computer-aided design 212CAM computer assisted manufacturing 213CAM conditional access module 214CAM content addressable memory 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 240CERT computer emergency response team 241CE customer edge 242CF compact flash 243CFB cipher feedback 244CFG context-free grammar 245CFG control-flow graph 246CFI control-flow integrity 247CG control gate 248CGA Color Graphics Adapter 249CGI common gateway interface 250CGN Carrier-Grade NAT 251CHAP Challenge-Handshake Authentication Protocol 252CHFS chip file system 253CHS cylinder/head/sector 254CI continuous integration 255CI {common,component} interface 256CIA confidentiality, integrity, availability 257CIDR Classless Inter-Domain Routing 258CIF common intermediate format 259CIFS Common Internet File System 260CIL common intermediate language 261CIR carrier-to-interference ratio 262CIS contact image sensor 263CISC complex instruction set {computer,computing} 264CJK Chinese, Japanese, [and] Korean 265CLF common log format 266CLI command line interface 267CLI common language infrastructure 268CLR common language runtime 269CLS common language specification 270CLTT closed loop thermal throttling 271CLUT color look-up table 272CLV constant linear velocity 273CM configuration management 274CMA concert multithread architecture 275CMC chassis management controller 276CMC corrected machine check 277CMC certificate management over CMS 278CMS {configuration,content,course} management system 279CMS cryptographic message syntax 280CMI control {management,method} interface 281CMOS complementary metal-oxide-semiconductor 282CMP chip multi-processing 283CMS content management system 284CMYK cyan magenta yellow black 285CN {common,canonical} name 286CNA CVE Numbering Authority 287CNC computer numerical control 288CNR carrier-to-noise ratio 289COA change of authority 290COF current operating frequency 291COFDM coded orthogonal frequency division multiplexing 292COFF common object file format 293COM component object model 294COM computer on module 295COMA cache-only memory architecture 296CORBA common object request broker architecture 297COS class of service 298COW copy-on-write 299CP continuous pilot 300CPA chosen-plaintext attack 301CPB core performance boost 302CPC central processor complex 303CPC cpu performance counters 304CPE common phase error 305CPE common platform enumeration 306CPER common platform error record 307CPG clock pulse generator 308CPI cycles per instruction 309CPL current privilege level 310CPLD complex programmable logic device 311CPP C preprocessor 312CPS characters per second 313CPS continuation-passing style 314CPT command pass through 315CPU central processing unit 316CR carriage return 317CRC cyclic redundancy check 318CRDT conflict-free replicated data type 319CRL carrier recovery loop 320CRQC cryptanalytically relevant quantum computer 321CRLF carriage return line feed 322CSIRT computer security incident response team 323CSPM cloud security posture management 324CSU C start up 325CRT cathode ray tube 326CRTP curiously recurring template pattern 327CRUD create, read, update, and delete 328CS cable select 329CS chip select 330CS code segment 331CS computer science 332CSDL {common,conceptual} schema definition language 333CSI channel state information 334CSI common system interface 335CSMA carrier sense multiple access 336CSMA/CA carrier sense multiple access with collision avoidance 337CSMA/CD carrier sense multiple access with collision detection 338CSP communicating sequential processes 339CSP content security policy 340CSP constrain satisfaction problems 341CSP cryptographic service provider 342CSR control [and] status registers 343CSRG Computer Systems Research Group 344CSS cascading style sheets 345CST common spanning tree 346CSV comma-separated values 347CTF compact c type format 348CTM close to metal 349CTR counter [mode] 350CTS clear to send 351CTS common type system 352CUA common user access 353CUT coordinated universal time 354CV control voltage 355CVE common vulnerabilities and exposures 356CVS Concurrent Versions System 357CVSS Common Vulnerability Scoring System 358DA destination address 359DAA distributed application architecture 360DAAP digital audio access protocol 361DAB digital audio broadcasting 362DAC digital [to] analog converter 363DAC discretionary access control 364DAD duplicate address detection 365DAE deterministic authenticated encryption 366DANE DNS-based Authentication of Named Entities 367DAO disk at once 368DAP Directory Access Protocol 369DAT digital audio tape 370DAT dynamic acceleration technology 371DB database 372DBA database administrator 373DBA dynamic bandwidth allocation 374DBB data bus buffer 375DBC design by contract 376DBL dynamic buffer limiting 377DBMS database management system 378DBS database server 379DC data center 380DC direct current 381DCC Direct Client-to-Client 382DCC direct cable connect 383DCD data carrier detect 384DCE data control equipment 385DCE distributed computing environment 386DCIM data center infrastructure management 387DCIM digital camera images 388DCL Digital Command Language 389DCOM distributed component object model 390DCOP Desktop COmmunication Protocol 391DCS data collection systems 392DCT discrete cosine transform 393DCU data cache unit 394DDC display data channel 395DDE dynamic data exchange 396DDI device drivers interface 397DDK device driver kit 398DDL data description language 399DDR double data rate 400DDS direct digital sound 401DDWG Digital Display Working Group 402DE debugging extensions 403DE desktop environment 404DEA data encryption algorithm 405DEC Digital Equipment Corporation 406DEK data encryption key 407DEP data execution prevention 408DER distinguished encoding rules 409DES Data Encryption Standard 410DF don't fragment 411DFA deterministic finite automaton 412DFC data flow control 413DFS depth first search 414DFS distributed file system 415DFSAN Data Flow Sanitizer 416DFT diagnostic function test 417DFT discrete Fourier transform 418DGL data generation language 419DGEMM double precision general matrix multiply 420DH Diffie-Hellman 421DHCP Dynamic Host Configuration Protocol 422DIA dedicated Internet access 423DIB device independent bitmap 424DIFS distributed inter-frame space 425DIMM dual inline memory module 426DIRT design in real time 427DKI driver/kernel interface 428DL diode logic 429DL discrete logarithm 430DL download 431DLCI data link connection identifier 432DLE data link escape 433DLL dynamic link library 434DLNA digital living network alliance 435DLP discrete logarithm problem 436DMA direct memory access 437DMI desktop management interface 438DMS document management system 439DMT discrete multitone modulation 440DMU data management layer 441DNARD Digital network appliance reference design 442DND drag and drop 443DNLC directory name lookup cache 444DNS Domain Name System 445DNSBL Domain Name System Block List 446DNSSEC DNS Security Extensions 447DOE distributed object environment 448DOF data over fibre 449DOM document object model 450DOS denial of service 451DOS disk operating system 452DP DisplayPort 453DPAA data path acceleration architecture 454DPC deferred procedure call 455DPCM differential pulse code modulation 456DPD dead peer detection 457DPDK data plane development kit 458DPI deep packet inspection 459DPI dots per inch 460DPL descriptor privilege level 461DPS Display PostScript 462DPST display power savings technology 463DRAAS disaster recovery as a service 464DRAM dynamic random access memory 465DRBG deterministic random bit generator 466DRI direct rendering infrastructure 467DRM digital rights management 468DRM direct rendering manager 469DRRS display refresh rate switching 470DS debug store 471DS differentiated services 472DS9000 DeathStation 9000 473DS9K DeathStation 9000 474DSA digital signature algorithm 475DSAP destination service access point 476DSB double-sideband modulation 477DSCP differentiated services code point 478DSDT differentiated system descriptor table 479DSF device special file 480DSL dataset and snapshot layer 481DSL digital subscriber line 482DSL domain specific language 483DSLAM digital subscriber line access multiplexer 484DSN delivery status notification 485DSO dynamic shared object 486DSP digital signal processor 487DSSS direct sequence spread spectrum 488DTB device tree blob 489DTC device tree compiler 490DTD document type definition 491DTE data terminal equipment 492DTE dumb terminal emulator 493DTL diode-transistor logic 494DTLS datagram transport layer security 495DTS device tree source 496DTS digital thermal sensor 497DUT device under test 498DVB digital video broadcasting 499DVCS distributed version control system 500DVD digital versatile disc 501DVFS dynamic voltage and frequency scaling 502DVI device independent 503DVI Digital Visual Interface 504DVR digital video recorder 505DWARF Debugging With Attributed Record Formats 506E-XER extended XML encoding rules 507EABI embedded-application binary interface 508EAI Email Address Internationalization 509EAI Enterprise Application Integration 510EAP Extensible Authentication Protocol 511EAPOL EAP over Lan 512EAV entity-attribute-value model 513EAV ethernet audio/video bridging 514EBCDIC Extended Binary Coded Decimal Interchange Code 515EBDA Extended BIOS Data Area 516EBNF extended backus-naur form 517EBR extended boot record 518EC elliptic curve 519ECC elliptic curve cryptography 520ECC error correction code 521ECDH elliptic curve Diffie-Hellman 522ECDL elliptic curve discrete logarithm 523ECDLP elliptic curve discrete logarithm problem 524ECDSA elliptic curve digital signature algorithm 525ECL emitter-coupled logic 526ECN explicit congestion notification 527ECP enhanced capability port 528ECS enhanced chip set 529ECS extended configuration space 530EDAC error detection and correction 531EDAT enhanced dynamic acceleration technology 532EdDSA Edwards curve digital signature algorithm 533EDGE explicit data graph execution 534EDID extended display identification data 535EDO extended data out 536EDS electronical data sheet 537EDSAC electronic delay storage automatic calculator 538EDVAC electronic discrete variable automatic computer 539EEE energy efficient ethernet 540EEE embrace, extend, extinguish 541EEPROM electrically erasable programmable read only memory 542EFI extensible firmware interface 543EFL emitter follower logic 544EFM eight to fourteen modulation 545EFS extent file system 546EGA Enhanced Graphics Adapter 547EGP exterior gateway protocol 548EH extension header 549EIDE enhanced IDE 550EISA extended industry standard architecture 551EINJ error injection table 552ELF executable and linking format 553ELS entry level system 554EMI electro-magnetic interference 555EMP electro-magnetic pulse 556EMR electro-magnetic radiation 557EMACS Editor MACroS 558ENIAC electronic numerical integrator and computer 559EOF end of file 560EOI end of interrupt 561EOIS end of interactive support 562EOL end of life 563EOL end of line 564EOT end of transmission 565EPIC explicitly parallel instruction computing 566EPP enhanced parallel port 567EPP extensible provisioning protocol (RFC5730) 568EPRML extended partial response, maximum likelihood 569EPROM erasable programmable read only memory 570EPT extended page tables 571ERC error recovery control 572ERD emergency recovery disk 573ERD entity relationship diagram 574ERE extended regular expression 575ERST error record serialization table 576ESAN Efficiency Sanitizer 577ESB enterprise service bus 578ESDI enhanced small disk interface 579ESDRAM enhanced synchronous dynamic random access memory 580ESI enclosure services interface 581ESS electronic switching system 582ESS extended service set 583ESSID extended service set identifier 584EST enhanced speedstep 585ETL extract, transform, load 586EU execution unit 587EULA end user license agreement 588FAT file allocation table 589FBRAM frame buffer random access memory 590FCIF full common intermediate format 591FCL fiber channel loop 592FCS frame check sequence 593FDC floppy disk controller 594FDD floppy disk drive 595FDDI fiber distributed data interface 596FDE full disk encryption 597FDT flattened device tree 598FEA finite element analysis 599FEC forward error correction 600FET field-effect transistor 601FF finite field 602FF form feed 603FFDH finite-field Diffie-Hellman 604FFH functional fixed hardware 605FFI foreign function interface 606FFM focus follows mouse 607FFS Fast File System 608FFS find first set 609FFT fast Fourier transform 610FG floating gate 611FHRP first hop redundancy protocol 612FHSS frequency hop spread spectrum 613FID frequency identifier 614FIFO first in, first out 615FILO first in, last out 616FIPS Federal Information Processing Standards 617FIR fast infrared 618FLOPS floating [point] operations per second 619FLOSS free/libre/open source software 620FM frequency modulation 621FMR false match rate 622FOSS free/open source software 623FPGA field programmable gate array 624FPM fast page mode 625FPR floating point register 626FPU floating point unit 627FQDN fully qualified domain name 628FRR false rejection rate 629FRU field replaceable unit 630FS file system 631FSB front side bus 632FSCK file system check 633FSF Free Software Foundation 634FSK frequency shift keying 635FSM finite-state machine 636FTA fault tree analysis 637FTL flash translation layer 638FTP File Transfer Protocol 639FTPS File Transfer Protocol Secure 640FTTH fiber to the home 641FUS fast user switching 642FWH firmware hub 643FWS folding white space 644GAL generic array logic 645GARP generic attribute registration protocol 646GAS generic address structure 647GC garbage collector 648GCC GNU Compiler Collection 649GCM Galois counter mode 650GCR group-coded recording 651GDI Graphics Device Interface 652GDT global descriptor table 653GECOS general comprehensive operating supervisor 654GEM graphics environment manager 655GEM graphics execution manager 656GEMM general matrix multiply 657GENA general event notification architecture 658GHC Glasgow Haskell compiler 659GHES generic hardware error source 660GIC generic interrupt controller 661GID group identifier 662GIF graphics interchange format 663GLBP gateway load balancing protocol 664GMCH graphics and memory controller hub 665GNU GNU's Not Unix 666GOP graphics output protocol 667GOT global offset table 668GPE general purpose event 669GPF general protection fault 670GPG GNU Privacy Guard 671GPL [GNU] General Public License 672GPR general purpose register 673GPS generalized processor sharing 674GPT GUID partition table 675GPU graphics processing unit 676GR golden ratio 677GRE generic routing encapsulation 678GRO generic receive offload 679GSI global system interrupt 680GSO generic send offload 681GUI graphical user interface 682GUID globally unique identifier 683GUS Gravis UltraSound 684GVFS git virtual file system 685HA high availability 686HAL hardware abstraction layer 687HAT hashed array tree 688HATEOAS hypermedia as the engine of application state 689HBA host bus adapter 690HCC Home Cable Computer 691HCCA Home Cable Computer Adaptor 692HCF halt and catch fire 693HCI host controller interface 694HCI human-computer interaction 695HCL hardware compatibility list 696HDCP High-bandwidth Digital Content Protection 697HDD hard disk drive 698HDL hardware description language 699HDMI High-Definition Multimedia Interface 700HDTV high-definition television 701HECI host embedded controller interface 702HEST hardware error source table 703HEVC high efficiency video coding 704HF high frequency 705HFM highest frequency mode 706HFS hierarchical file system 707HID human interface device 708HKDF HMAC-based key derivation function 709HKP HTTP Keyserver Protocol 710HLL high-level language 711HMA high memory area 712HMI human-machine interface 713HOOD hierarchical object oriented design 714HOTP HMAC-based one time password 715HP Hewlett-Packard 716HPC high performance computing 717HPD hot plug detection 718HPET high precision event timer 719HSM hardware security module 720HSM hierarchical storage management 721HSRP hot standby router protocol 722HT hyper-threading 723HTC hardware thermal control 724HTCC high temperature co-fired ceramic 725HTML HyperText Markup Language 726HTT hyper-threading technology 727HTTP Hypertext Transfer Protocol 728HTTPS Hypertext Transfer Protocol Secure 729HVM hardware virtual machine 730HVDS High-Voltage Differential Signaling 731HWASAN Hardware-assisted Address Sanitizer 732HZ Hertz 733I2O intelligent input/output 734IA information assurance 735IAAS infrastructure as a service 736IANA Internet Assigned Numbers Authority 737IAB Internet Architecture Board 738IBC iterated block cipher 739IBM International Business Machines 740IBPI international blinking pattern interpretation 741IBS instruction based sampling 742IBSS independent basic service set 743IC integrated circuit 744ICA independent computer architecture 745ICACLS integrity control access control lists 746ICB Internet Citizen's Band 747ICE in-circuit emulator 748ICE internal compiler error 749ICH I/O controller hub 750ICMP Internet Control Message Protocol 751ICT information and communications technology 752ICW initialization command word 753IDA Intel dynamic acceleration 754IDCMP Intuition direct communication message port 755IDCT inverse discrete cosine transform 756IDE integrated development environment 757IDE integrated drive electronics 758IDPS intrusion detection [and] prevention system 759IDRP inter-domain routing protocol 760IDS intrusion detection system 761IDT interrupt descriptor table 762IE Internet Explorer 763IEC International Electrotechnical Commission 764IEEE Institute of Electrical and Electronics Engineers 765IESG Internet Engineering Steering Group 766IETF Internet Engineering Task Force 767IF intermediate frequency 768IFCM isochronous flow control mode 769IFF Interchange File Format 770IFS internal field separator 771IGD Internet gateway device 772IGMP Internet Group Management Protocol 773IGP interior gateway protocol 774IHV independent hardware vendor 775IKE Internet key exchange 776ILM internal loopback mode 777ILOM integrated lights-out management 778ILP instruction level parallelism 779IM instant messaging 780IME input method editor 781IMAP Internet Message Access Protocol 782IMC integrated memory controller 783IMCR interrupt mode configuration register 784IMR interrupt mask register 785IMS information management system 786IMSI international mobile subscriber identity 787INCITS InterNational Committee for Information Technology Standards 788INODE index node 789IO input/output 790IOCTL input/output control 791IOM input/output managers 792IOMMU input/output memory management unit 793IOT Internet of Things 794IP Internet Protocol 795IP intellectual property 796IPC instructions per cycle 797IPC interprocess communication 798IPCF interprocess communication facility 799IPE integrated programming environment 800IPI intelligent peripheral interface 801IPI interprocessor interrupt 802IPL Initial Program Load 803IPL Interrupt Priority Level 804IPMB Intelligent Platform Management Bus 805IPMI Intelligent Platform Management Interface 806IPNG Internet Protocol, Next Generation 807IPS in-plane switching 808IPS intrusion prevention system 809IPSEC Internet Protocol Security 810IRC Internet Relay Chat 811IRDA infrared data association 812IRDP ICMP Router Discovery Protocol 813IR intermediate representation 814IRQ interrupt request 815IRQL interrupt request level 816IRR interrupt request register 817IRTF Internet Research Task Force 818IS information system 819ISA industry standard architecture 820ISA instruction set architecture 821ISE instant secure erase 822ISDN integrated services digital network 823ISI inter-symbol interference 824ISL initial system load 825ISM industrial, scientific, [and] medical 826ISMS information system management system 827ISN initial serial number 828ISO International Standards Organization 829ISOC Internet Society 830ISP Internet service provider 831ISR in-service register 832ISR interrupt service routine 833IST internal spanning tree 834IST interrupt stack table 835ISV independent software vendor 836IT information technology 837ITB Intel Turbo Boost 838ITIL information technology infrastructure library 839ITP in-target probe 840ITSM IT service management 841IV initialization vector 842IVT interrupt vector table 843JBOD just a bunch of disks 844JCL Job Control Language 845JFET junction [gate] field-effect transistor 846JIT just in time 847JPEG Joint Photographic Experts Group 848JRE Java Runtime Environment 849JSON JavaScript Object Notation 850JTAG joint test action group 851KASAN Kernel Address Sanitizer 852KASLR kernel address space layout randomization 853KB keyboard 854KB kilobyte 855KBD keyboard 856KBD kilobaud 857KCS keyboard controller style 858KEM key encapsulation mechanism 859KLOC thousand lines of code 860KMS kernel-mode setting 861KPI kernel programming interface 862KVA kernel virtual address 863KVM kernel virtual machine 864KVM kernel virtual memory 865KVM keyboard, video, [and] mouse 866L2CAP link layer control and adaptation protocol 867LAG link aggregation group 868LAMP Linux Apache MySQL {Perl,PHP,Python} 869LAN local area network 870LAPIC local advanced programmable interrupt controller 871LAR load access rights 872LBA logical block addressing 873LBNF labeled backus-naur form 874LBS location-based service 875LCD liquid crystal display 876LCP link control protocol 877LDA local delivery agent 878LDAP Lightweight Directory Access Protocol 879LDR light-dependent resistor 880LDT local descriptor table 881LE logical extent 882LED light emitting diode 883LELL low energy link layer 884LER label edge router 885LF line feed 886LF low frequency 887LFM lowest frequency mode 888LFN long file names 889LFO low-frequency oscillation 890LFS log-structured file system 891LFU least frequently used 892LHP loop heat pipe 893LIF logical interchange format 894LIFO last in, first out 895LILO LInux LOader 896LILO last in, last out 897LINT local interrupt 898LIR local Internet registry 899LISP LISt Processor 900LISP Locator/ID Separation Protocol 901LKM {Linux,loadable} kernel module 902LKML Linux kernel mailing list 903LL load linked 904LL/SC load linked/store conditional 905LLC logical link control 906LLD low-level design 907LLDD low-level design document 908LLDP link layer discovery protocol 909LLF low level format 910LLMNR link-local multicast name resolution 911LLVM Low Level Virtual Machine 912LM long mode 913LMCE local machine check exception 914LMI local management interface 915LMM link management mode 916LMP link management protocol 917LNO loop nest optimization 918LOC lines of code 919LOM lights-out management 920LPE Linux performance events 921LPC low pin count 922LPS local positioning system 923LRC longitudinal redundancy check 924LRM left-to-right mark 925LRO Large Receive Offload 926LRO left-to-right override 927LRU least recently used 928LS link state 929LSAN Leak Sanitizer 930LSB Linux standards base 931LSB least significant {bit,byte} 932LSI large scale integration 933LSL load segment limit 934LSM log structured merge 935LSN Large Scale NAT 936LSN log sequence number 937LSO large send offload 938LSR label switch router 939LTCC low temperature co-fired ceramic 940LTO linear tape-open 941LTO link time optimization 942LTR left to right 943LTR load task register 944LTR letter(-sized paper) 945LTS long term support 946LUA Lua Uppercase Accident 947LUN logical unit number 948LV logical volume 949LVM logical volume management 950LVT local vector table 951LVDS Low-Voltage Differential Signaling 952LWP light-weight process 953LZSS Lempel Ziv Storer Szymanski 954LZW Lempel Ziv Welch 955MAB MAC authentication bypass 956MAC mandatory access control 957MAC {media,medium} access control 958MAC message authentication {check,code} 959MADT multiple APIC descriptor table 960MAMR microwave-assisted magnetic recording 961MB megabyte 962MBA multi-boot agent 963MBR master boot record 964MBS megabits per second 965MC memory controller 966MCA machine check architecture 967MCA MicroChannel architecture 968MCC multiversion concurrency control 969MCE machine check exception 970MCGA Multi-Color Graphics Array 971MCH memory controller hub 972MCLAG multi-chassis link aggregation group 973MCM multi-chip module 974MCQ memory controlled queue 975MD machine-dependent 976MD MiniDisc 977MD-SAL model-driven service abstraction layer 978MDA mail delivery agent 979MDA Monochrome Display Adapter 980MDC Management Data Clock 981MDI Medium Dependent Interface 982MDI-X Medium Dependent Interface Crossover 983MDIO Management Data Input/Output 984MDMX MIPS Digital Media eXtension 985MDRAM multibank dynamic random access memory 986MESI modified, exclusive, shared, invalid 987MFC merge from current 988MFC Microsoft Foundation Classes 989MFM modified frequency modulation 990MFU most frequently used 991MGCP media gateway control protocol 992MHU message handling unit 993MI machine-independent 994MI machine interface 995MIB management information base 996MIC message integrity {check,code} 997MID mobile Internet device 998MIDI musical instrument digital interface 999MIF management information format 1000MII media independent interface 1001MIM man in the middle 1002MIMD multiple instruction, multiple data 1003MIME Multipurpose Internet Mail Extensions 1004MIMO multiple input multiple output 1005MIPS million instructions per second 1006MIPS Microprocessor without Interlocked Pipeline Stages 1007MISD multiple instruction, single data 1008MIT Massachusetts Institute of Technology 1009MITM man in the middle 1010ML machine language 1011ML machine learning 1012ML mailing list 1013ML markup language 1014ML maximum likelihood 1015MLAG multi-chassis link aggregation group 1016MLC multi-level cell 1017MLD multicast listener discovery 1018MLHP micro loop heat pipe 1019MLIR multi-level intermediate representation 1020MLO MMC loader 1021MMC multi-media card 1022MMF multi-mode fiber 1023MMIC monolithic microwave integrated circuit 1024MMIO memory mapped input/output 1025MMORPG massive multiplayer online role playing game 1026MMRP multiple MAC registration protocol 1027MMU memory management unit 1028MMX matrix math extension 1029MMX multimedia extension 1030MMX multiple math extension 1031MO magneto-optical 1032MOESI modified, owned, exclusive, shared, invalid 1033MOF maximum operating frequency 1034MOSFET metal-oxide-semiconductor field-effect transistor 1035MOSI modified, owned, shared, invalid 1036MP multi-platform 1037MP multiplayer 1038MP {multiprocessing,multiprocessor} 1039MPEG moving picture experts group 1040MPI message passing interface 1041MPLS Multiprotocol Label Switching 1042MPP massively parallel processor 1043MPS memory pool system 1044MPS multiprocessor specification 1045MQTT Message Queuing Telemetry Transport 1046MR modem ready 1047MRO method resolution order 1048MRP multiple registration protocol 1049MRU most recently used 1050MS Microsoft 1051MSAN Memory Sanitizer 1052MSB most significant {bit,byte} 1053MSC message sequence chart 1054MSE mean square error 1055MSF minutes seconds frames 1056MSI message signaled interrupt 1057MSI modified, shared, invalid 1058MSR {machine state,model-specific} register 1059MSS maximum segment size 1060MSTP Multiple Spanning Tree Protocol 1061MT machine translation 1062MTA mail transfer agent 1063MTBF mean time between failures 1064MTP media transfer protocol 1065MTRR memory type range register 1066MTTF mean time to failure 1067MTU maximum transmission unit 1068MUA mail user agent 1069MUD multi-user domain 1070MVCC multiversion concurrency control 1071MVR multicast VLAN registration 1072MVRP multiple VLAN registration protocol 1073MWE module width encoding 1074MX mail exchange 1075NACK negative acknowledgement 1076NAK negative acknowledgement 1077NAN neighbor awareness networking 1078NAN not a number 1079NAPT Network Address Port Translation 1080NAS network attached storage 1081NAT network address translation 1082NAV network allocation vector 1083NC numerical control 1084NC-SI network controller sideband interface 1085NCO numerically-controlled oscillator 1086NCP Network Control Protocol 1087NCSI network connectivity status indicator 1088NCQ native command queuing 1089ND neighbor discovery 1090NDFA nondeterministic finite automaton 1091NDIS network driver interface specification 1092NE numeric error 1093NEWS Network extensible Window System 1094NFA nondeterministic finite automaton 1095NFC near-field communication 1096NFCI no functional change intended 1097NFS network file system 1098NFV network function virtualization 1099NHACP NABU HCCA Application Communication Protocol 1100NIA next instruction address 1101NIC network information center 1102NIC network interface card 1103NIDS network intrusion detection system 1104NIP network interface protocol 1105NIPS network intrusion prevention system 1106NIS network information service 1107NIST National Institute of Standards and Technology 1108NLS native language support 1109NMI non-maskable interrupt 1110NNTP Network News Transfer Protocol 1111NMR nonce-misuse resistance 1112NOC network operations center 1113NOP no operation 1114NOS network operating system 1115NP nondeterministic polynomial time 1116NRND not recommended for new designs 1117NRZ non-return to zero 1118NSA nation-state adversary 1119NSA no such agency 1120NSA National Security Agency 1121NTM non-deterministic Turing machine 1122NTP Network Time Protocol 1123NUMA non-uniform memory access 1124NURBS non-uniform rational basis spline 1125NVMM NetBSD Virtual Machine Monitor 1126NVMM non-volatile main memory 1127NVRAM non-volatile random access memory 1128NW not write-through 1129NX no execute 1130OAEP optimal asymmetric encryption padding 1131OAM operations, administration, and {management,maintenance} 1132OBO off by one 1133OBOE off by one error 1134OCL object constraint language 1135OCR optical character recognition 1136ODBC Open Database Connectivity 1137ODE offline device environment 1138ODI open data-link interface 1139ODM object data manager 1140ODCM on-demand clock modulation 1141ODMR on-demand mail relay 1142ODT on-die termination 1143OEM original equipment manufacturer 1144OFB output feedback 1145OFDM orthogonal frequency division multiplexing 1146OFET organic field-effect transistor 1147OLAP online analytical processing 1148OLE object linking and embedding 1149OLTP online transaction processing 1150ONCE on-{chip,circuit} emulation 1151ONFI open nand flash interface 1152OO OpenOffice 1153OO object oriented 1154OOB out of band 1155OOE out of order execution 1156OOM out of memory 1157OOO OpenOffice.org 1158OOP object oriented programming 1159OOPS object oriented programming systems 1160OOSE object oriented software engineering 1161OPM operations per minute 1162OPS operations per second 1163OQL Object Query Language 1164ORB object request broker 1165ORM object-relational mapping 1166OS operating system 1167OSD object-based storage device 1168OSD open source definition 1169OSF open software foundation 1170OSI Open Source Initiative 1171OSI open systems interconnection 1172OSPF open shortest path first 1173OSPM OS power management 1174OSS open sound system 1175OSS open source software 1176OSVW operating system visible workarounds 1177OTP one time password 1178OTP open telecom platform 1179OU organizational unit 1180OUI organizationally unique identifier 1181OWASP Open Web Application Security Project 1182OWL Web Ontology Language 1183P2P PCI to PCI 1184P2P peer to peer 1185PA phase accumulator 1186PA physical address 1187PAAS platform as a service 1188PAC phase-amplitude converter 1189PAE physical address extension 1190PAGP port aggregation protocol 1191PAL phase alternating line 1192PAL programmable array logic 1193PAM pluggable authentication modules 1194PAM pulse amplitude modulation 1195PAP password authentication protocol 1196PAT page attribute table 1197PAT port address translation 1198PATA parallel ATA 1199PAX portable archive exchange 1200PBE pending break encoding 1201PBE programming by example 1202PBR partition boot record 1203PBX private branch exchange 1204PC personal computer 1205PC program counter 1206PCB printed circuit board 1207PCB process control block 1208PCB Protocol Control Block 1209PCBC propagating cipher block chaining 1210PCC Portable C Compiler 1211PCD page-level cache disable 1212PCE path computation element 1213PCE performance-monitor counter enable 1214PCEP Path Computation Element Protocol 1215PCH platform controller hub 1216PCI peripheral component interconnect 1217PCM phase change memory 1218PCM pulse code modulation 1219PCMCIA Personal Computer Memory Card International Association 1220PCP Port Control Protocol 1221PD public domain 1222PDA personal digital assistant 1223PDA pushdown automaton 1224PDAG propositional directed acyclic graph 1225PDB power distribution board 1226PDF portable document format 1227PDM pulse-duration modulation 1228PDN pull-down network 1229PDP page {descriptor,directory} page 1230PDS product data sheet 1231PDU protocol data unit 1232PE protection enable 1233PE provider edge 1234PE portable executable 1235PEAP Protected EAP 1236PECI platform environment control interface 1237PEP protocol extension protocol 1238PER packed encoding rules 1239PFS perfect forward secrecy 1240PGAS partitioned global address space 1241PGE page global enable 1242PGO profile guided optimization 1243PGP Pretty Good Privacy 1244PHB PCI host bridge 1245PHP PHP: Hypertext Preprocessor 1246PIC performance instrumentation counters 1247PIC position independent code 1248PIC programmable interrupt controller 1249PICNIC problem in chair, not in computer 1250PID process id 1251PIE position independent executable 1252PIL Priority Interrupt Level 1253PIM personal information manager 1254PIM platform-independent model 1255PIO programmed input/output 1256PIPT physically indexed, physically tagged 1257PIR private information retrieval 1258PIQ prefetch input queue 1259PIT programmable interrupt timer 1260PIV personal identity verification 1261PIX Private Internet eXchange 1262PKCS public-key cryptography standards 1263PKI public key infrastructure 1264PLC programmable logic controller 1265PLD programmable logic device 1266PLL phase locked loop 1267PLRU pseudo LRU 1268PLT procedure linkage table 1269PLTM package level thermal management 1270PM power management 1271PM {phase,pulse} modulation 1272PMC performance monitoring counters 1273PME power management event 1274PMEG page map entry group 1275PMI performance monitoring infrastructure 1276PMI platform management interrupt 1277PMIC power management integrated circuit 1278PMIO port-mapped input/output 1279PMT photo-multiplier tube 1280PMU performance monitoring units 1281PMU power management unit 1282PNG portable network graphics 1283PNP plug and play 1284POE power over ethernet 1285POF probability of failure 1286POP Post Office Protocol 1287POP power on password 1288POR plan of record 1289POSIX Portable Operating System Interface [for Unix] 1290POST power on self test 1291POTS plain old telephone system 1292POWER Performance Optimization With Enhanced RISC 1293POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1294PP pair programming 1295PPB PCI [to] PCI bridge 1296PPC PowerPC 1297PPC Power Performance Computing 1298PPI pixels per inch 1299PPM pages per minute 1300PPP Point-to-Point Protocol 1301PPPOA Point-to-Point Protocol over ATM 1302PPPOE Point-to-Point Protocol over Ethernet 1303PPR processor programming reference 1304PPT powerpoint 1305PPT punched paper tape 1306PPU physics processing unit 1307PQC post-quantum cryptography 1308PRAM Parameter RAM 1309PRBS pseudorandom bit sequence 1310PRG pseudorandom generator 1311PRF pseudorandom function [family] 1312PRML partial response, maximum likelihood 1313PRN pseudorandom {noise,number} 1314PRNG pseudorandom number generator 1315PROM programmable read only memory 1316PRP pseudorandom permutation 1317PRU Programmable Realtime Unit 1318PS PostScript 1319PSD power spectral density 1320PSE page size extensions 1321PSK phase shift keying 1322PSK pre-shared key 1323PSTN public switched telephone network 1324PSW program status word 1325PTE page table entry 1326PTLA pseudo top level aggregator 1327PTP page table page 1328PTV perceived target value 1329PU processing unit 1330PUC personal unblocking code 1331PUN physical unit number 1332PV physical volume 1333PVC permanent virtual circuit 1334PVG physical volume group 1335PVI protected-mode virtual interrupt 1336PVRST Per-VLAN rapid spanning tree 1337PVST Per-VLAN Spanning Tree 1338PWM pulse width modulation 1339PXE preboot execution environment 1340QA quality assurance 1341QAM quadrature amplitude modulation 1342QAM quality assurance management 1343QBE query by example 1344QC quality control 1345QDI quasi delay insensitive 1346QCIF quarter common intermediate format 1347QOI quality of implementation 1348QOI quick order interface 1349QOS quality of service 1350QVL qualified vendor list 1351R/O read only 1352R/W read/write 1353RA receiver address 1354RA remote assistance 1355RA resource affinity 1356RA router advertisement 1357RAD rapid application development 1358RADIUS remote authentication dial-in user service 1359RAID redundant array of {independent,inexpensive} disks 1360RAII resource acquisition is initialization 1361RAM random access memory 1362RAS reliability, availability and serviceability 1363RAS remote access service 1364RAS restartable atomic sequence 1365RAS row address strobe 1366RAT register allocation table 1367RAT remote access trojan 1368RBF radial basis function 1369RBL reputation block list 1370RBL real-time blackhole list 1371RBNF routing backus-naur form 1372RBT red-black tree 1373RC release candidate 1374RC remote control 1375RC run commands 1376RCS Revision Control System 1377RCU read, copy, update 1378RDB Rigid Disk Block 1379RDBMS relational database management system 1380RDF Resource Description Framework 1381RDM relational data model 1382RDMA remote direct memory access 1383RDP remote desktop protocol 1384RDRAM Rambus DRAM 1385RE regular expression 1386REPL read, evaluate, print, loop 1387REST representational state transfer 1388RF radio frequency 1389RFB remote frame buffer 1390RFI radio frequency interference 1391RFO request for ownership 1392RFU reserved for future use 1393RGB red green blue 1394RGBA red green blue alpha 1395RGMII reduced gigabit media independent interface 1396RH read hit 1397RHEL Red Hat Enterprise Linux 1398RHL Red Hat Linux 1399RIB routing information base 1400RIFF Resource Interchange File Format 1401RIP Raster Image Processor 1402RIP Routing Information Protocol 1403RIR regional Internet registry 1404RISC reduced instruction set {computer,computing} 1405RKM ROM Kernel Manual 1406RLE run length encoding 1407RLL run length limited 1408RLO right-to-left override 1409RM read miss 1410RMCP Remote Management Control Protocol 1411RMI remote method invocation 1412RMO Relaxed Memory Ordering 1413RMPM rapid memory power management 1414RMS root mean square 1415RMW read, modify, write 1416RNG random number generator 1417ROM read only memory 1418ROP return-oriented programming 1419RPC remote procedure call 1420RPG Report Program Generator 1421RPKI resource PKI 1422RPL requested privilege level 1423RPM revolutions per minute 1424RPN reverse Polish notation 1425RPVST Rapid Per-VLAN Spanning Tree 1426RR random replacement 1427RR round robin 1428RS relay station 1429RSA Rivest, Shamir, [and] Adleman 1430RSC Receive Segment Coalescing 1431RSIP Realm Specific IP 1432RSN Robust Secure Network 1433RSS really simple syndication 1434RSS Receive Side Scaling 1435RSS residual sum of squares 1436RSTP Rapid Spanning Tree Protocol 1437RT real time 1438RTC real time clock 1439RTC real time computing 1440RTF rich text format 1441RTL register transfer language 1442RTL resistor-transistor logic 1443RTL right to left 1444RTOS real time operating system 1445RTP Real-time Transport Protocol 1446RTS request to send 1447RTT round trip time 1448RTTI run-time type information 1449RUP rational unified process 1450RW Rabin-Williams 1451RWM read-write memory 1452RX {receive,receiver} 1453S/PDIF Sony/Philips Digital Interface Format 1454SA security advisory 1455SA security association 1456SA source address 1457SA structured analysis 1458SAAS software as a service 1459SABRE Semi-automated business research environment 1460SACD super audio compact disc 1461SAD security association database 1462SAF-TE SCSI accessed fault-tolerant enclosure 1463SAGE Semi-automated ground environment 1464SAL {service,system} abstraction layer 1465SAM serial access memory 1466SAM sum addressed memory 1467SAML security assertion markup language 1468SAN storage area network 1469SAP service access point 1470SAPIC streamlined advanced programmable interrupt controller 1471SASD structured analysis, structured design 1472SASI Shugart Associates System Interface 1473SASL simple authentication [and] security layer 1474SATA serial advanced technology attachment 1475SAX simple API for XML 1476SB sound blaster 1477SBSA server base system architecture 1478SBU standard build unit 1479SC store conditional 1480SCA source code analyzer 1481SCADA supervisory control and data acquisition 1482SCC single chip cloud 1483SCC source code control 1484SCCP skinny call control protocol 1485SCCS Source Code Control System 1486SCI scalable coherent interface 1487SCI system control interrupt 1488SCIM smart common input method 1489SCM software configuration management 1490SCM source code management 1491SCM storage-class memory 1492SCO synchronous connection orientated 1493SCP secure copy 1494SCP system control processor 1495SCPI system control and power interface 1496SCSI Small Computer System Interface 1497SCTP Stream Control Transmission Protocol 1498SDDC software defined data center 1499SDEI software delegated exception interface 1500SDI symbol deinterleave 1501SDK software development kit 1502SDL Simple Declarative Language 1503SDL Simple Direct-media Layer 1504SDLC {software,system,systems} development life cycle 1505SDN software defined networking 1506SDP Session Description Protocol 1507SDR software defined radio 1508SDRAM synchronous dynamic random access memory 1509SDS software defined storage 1510SDT syntax-directed translation 1511SEA synchronous external abort 1512SEGV segmentation violation 1513SED self-encrypting drive 1514SED stream editor 1515SEMB serial ATA enclosure management bridge 1516SEO search engine optimization 1517SES SCSI enclosure services 1518SFC sequential function chart 1519SFI simple firmware interface 1520SFI software fault isolation 1521SFTP SSH File Transfer Protocol 1522SFTP Serial File Transfer Protocol 1523SFTP Simple File Transfer Protocol 1524SGI Silicon Graphics, Inc 1525SGI software generated interrupt 1526SGMII serial gigabit media independent interface 1527SGPIO serial general purpose input/output 1528SGRAM synchronous graphics random access memory 1529SHA secure hash algorithm 1530SICP structure and interpretation of computer programs 1531SIDH supersingular isogeny Diffie-Hellman 1532SIEM security information and event management 1533SIF source input format 1534SIFS short inter-frame space 1535SIM subscriber identity module 1536SIMD single instruction, multiple data 1537SIMM single inline memory module 1538SIP Session Initiation Protocol 1539SIR signal-to-interference ratio 1540SIR slow infrared 1541SIRT security incident response team 1542SISD single instruction, single data 1543SIV synthetic intialization vector 1544SLAAC stateless address auto-configuration 1545SLC single-level cell 1546SLDRAM synchronous-link dynamic random access memory 1547SLED single large expensive disk 1548SLI scalable link interface 1549SLI scan-line interleave 1550SLIC system license internal code 1551SLOC source lines of code 1552SLRU segmented LRU 1553SMA smart memory access 1554SMAF system management action field 1555SMAP Simple Mail Access Protocol 1556SMAP supervisor mode access prevention 1557SMART self-monitoring analysis and reporting technology 1558SMB Server Message Block 1559SMB system management bus 1560SMBIOS System Management BIOS 1561SMC system management controller 1562SMD storage module device 1563SMEP supervisor mode execution protection 1564SMF single mode fiber 1565SMI structure of management information 1566SMI system management interrupt 1567SMM system management mode 1568SMP serial management protocol 1569SMP symmetric multiprocessing 1570SMR shingled magnetic recording 1571SMR state machine replication 1572SMT simultaneous multithreading 1573SMTP Simple Mail Transfer Protocol 1574SMU system management unit 1575SNA systems network architecture 1576SNAP Sub-Network Access Protocol 1577SNIA Storage Networking Industry Association 1578SNMP Simple Network Management Protocol 1579SNR signal-to-noise ratio 1580SOC security operations center 1581SOA service oriented architecture 1582SOAP Simple Object Access Protocol 1583SOC system on chip 1584SOF start of frame 1585SOH start of header 1586SOHO small office/home office 1587SOL serial over LAN 1588SOM system on module 1589SP service pack 1590SP stack pointer 1591SPA storage pool allocator 1592SPAN switched port analyzer 1593SPARC scalable processor architecture 1594SPARQL SPARQL Protocol and RDF Query Language 1595SPD security policy database 1596SPD serial presence detect 1597SPDIF Sony/Philips digital interface format 1598SPI serial peripheral interface 1599SPI stateful packet inspection 1600SPIR standard portable intermediate representation 1601SPL secondary program loader 1602SPL spinlock 1603SPL system interrupt priority level 1604SPMD single process, multiple data 1605SPR special purpose register 1606SPT sectors per track 1607SQA software quality assurance 1608SQCIF sub quarter common intermediate format 1609SQL Structured Query Language 1610SRAM static random access memory 1611SRC sample rate conversion 1612SRP SCSI RDMA protocol 1613SRR shaped round robin 1614SRTP Secure Real-time Transport Protocol 1615SS self-snoop 1616SS stack segment 1617SSA static single assignment 1618SSAP source service access point 1619SSB single-sideband modulation 1620SSC spread spectrum clock 1621SSD solid state drive 1622SSE streaming SIMD extensions 1623SSFDC solid state floppy disc card 1624SSH secure shell 1625SSI server side includes 1626SSID service set identifier 1627SSTP secure socket tunneling protocol 1628SSL secure sockets layer 1629SSP stack smashing protection 1630STC software thermal control 1631STD state transition diagram 1632STM software transactional memory 1633STOMP Streaming Text Oriented Messaging Protocol 1634STP Spanning Tree Protocol 1635STP shielded twisted pair 1636STRG spanning tree root guard 1637SUN Stanford University Network 1638SUS Single Unix Specification 1639SUT system under test 1640SVC switched virtual circuit 1641SVG scalable vector graphics 1642SVGA Super Video Graphics Array 1643SVI {switch,switched} virtual interface 1644SVM secure virtual machine 1645SVM support vector machine 1646SVR System V Release 1647SVS Separate Virtual Space 1648SWF Shockwave Flash 1649SWIG simplified wrapper [and] interface generator 1650SYR symbol timing recovery 1651TA test assertion 1652TA transmitter address 1653TACACS terminal access controller access-control system 1654TAI international atomic time 1655TAO track at once 1656TAOCP The Art of Computer Programming 1657TAP Test Anything Protocol 1658TAS test and set 1659TB terabyte 1660TBNF transitional backus-naur form 1661TCB trace capture buffer 1662TCB trusted computing base 1663TCC thermal control circuit 1664TCL tool command language 1665TCP Transmission Control Protocol 1666TCQ tagged command queueing 1667TDC time [to] digital converter 1668TDD test-driven development 1669TDD time division duplex 1670TDM time division multiplexing 1671TDMA time division multiple access 1672TDOA time difference of arrival 1673TDP thermal design {point,power} 1674TDR time-domain reflectometry 1675TECO Text Editor and Corrector 1676TEE Trusted Execution Environment 1677TFT thin film transistor 1678TFTP Trivial File Transfer Protocol 1679TIAS try it and see 1680TIFF tagged image file format 1681TITS try it to see 1682TK temporal key 1683TKIP Temporal Key Integrity Protocol 1684TLA top level aggregator 1685TLB translation lookaside buffer 1686TLD top level domain 1687TLER time-limited error recovery 1688TLI transport layer interface 1689TLS thread local storage 1690TLS transport layer security 1691TM Turing machine 1692TM thermal monitor 1693TMG transmogrifier 1694TMDS transition minimized differential signaling 1695TMO timeout 1696TOD time of day 1697TOE TCP offload engine 1698TOFU trust on first use 1699TOS terms of service 1700TOS trusted operating system 1701TOS type of service 1702TOTP time-based one time password 1703TP transaction processing 1704TPI tracks per inch 1705TPM transactions per minute 1706TPM trusted platform module 1707TPR task priority register 1708TPS transactions per second 1709TPS transmission parameters signaling 1710TR task register 1711TR token ring 1712TRL timing recovery loop 1713TRNG true random number generator 1714TS terminal services 1715TS time series 1716TS time stamp 1717TS transport stream 1718TSAN Thread Sanitizer 1719TSC time stamp counter 1720TSD time stamp disable 1721TSDB time series database 1722TSL test, set, lock 1723TSO time sharing option 1724TSO TCP segmentation offload 1725TSO Total Store Ordering 1726TSP Time-Stamp Protocol 1727TSP Tunnel Setup Protocol 1728TSP time synchronization protocol 1729TSP traveling salesman problem 1730TSS task state segment 1731TSV tab-separated values 1732TTL time to live 1733TTL transistor-transistor logic 1734TTM translation table maps 1735TTY teletype 1736TU translation unit 1737TUI {terminal,text-based,textual} user interface 1738TX {transmit out,transmitter} 1739TXG transaction group 1740TZ time zone 1741UAC user {access,account} control 1742UAF use-after-free 1743UART universal asynchronous receiver/transmitter 1744UAT user acceptance testing 1745UB undefined behavior 1746UBSAN Undefined Behavior Sanitizer 1747UC uncacheable 1748UCS uniform-cost search 1749UCS unified computing system 1750UCS universal coded character set 1751UDI uniform driver interface 1752UDMA ultra DMA 1753UDO ultra density optical 1754UDP User Datagram Protocol 1755UDS Unix Domain Socket 1756UEFI unified extensible firmware interface 1757UFO UDP fragmentation offload 1758UFS Unix File System 1759UGA universal graphics adapter 1760UI unit interval 1761UI user interface 1762UICC universal integrated circuit card 1763UID unique identifier 1764UID user identifier 1765UL upload 1766UMA uniform memory access 1767UMA upper memory area 1768UMB upper memory block 1769UML unified modeling language 1770UMPC ultra-mobile PC 1771UPNP universal plug and play 1772UPS uninterruptible power supply 1773URI uniform resource identifier 1774URL uniform resource locator 1775URN uniform resource name 1776USART universal synchronous/asynchronous receiver/transmitter 1777USB universal serial bus 1778USWC uncacheable speculative write combining 1779UT unit test 1780UTC coordinated universal time 1781UTF unicode transformation formats 1782UTP unshielded twisted pair 1783UTS UNIX time-sharing 1784UUCP Unix-to-Unix Copy Protocol 1785UUID universally unique identifier 1786UUOC useless use of cat 1787UUT unit under test 1788UX user experience 1789VA vertical alignment 1790VA virtual address 1791VA volt-ampere 1792VAX virtual address extension 1793VB Visual Basic 1794VBR volume boot record 1795VCA variable-gain amplifier 1796VCC common collector voltage 1797VCCP virtual chassis control protocol 1798VCF voltage-controlled filter 1799VCM virtual channel memory 1800VCO voltage-controlled oscillator 1801VCP virtual chassis port 1802VCS version control system 1803VDPAU Video Decode and Presentation API for Unix 1804VES virtual execution system 1805VESA Video Electronics Standards Association 1806VFO variable-frequency oscillator 1807VFS virtual file system 1808VG volume group 1809VGA Video Graphics Array 1810VHDCI very high density cable interconnect 1811VID {VLAN,voltage level} identifier 1812VIM Vi IMproved 1813VIPT virtually indexed, physically tagged 1814VIVT virtually indexed, virtually tagged 1815VLAN virtual local area network 1816VLD variable-length decoding 1817VLIW very long instruction word 1818VLSI very large scale integration 1819VLSM variable length subnet mask 1820VM virtual {machine,memory} 1821VME virtual mode extension 1822VMX vector multimedia extensions 1823VMX virtual machine extensions 1824VNC virtual network computing 1825VOD video on demand 1826VPD vital product data 1827VPN virtual private network 1828VPWS virtual private wire service 1829VR virtual reality 1830VRAM video random access memory 1831VRF virtual routing and forwarding 1832VRM voltage regulator module 1833VROC Virtual RAID On CPU 1834VRRP Virtual Router Redundancy Protocol 1835VSTP VLAN Spanning Tree Protocol 1836VTP VLAN Trunking Protocol 1837VXFS Veritas file system 1838VXVM Veritas volume manager 1839W watt 1840W3C World Wide Web Consortium 1841WAFL write anywhere file layout 1842WAMP Web Application Messaging Protocol 1843WAN wide area network 1844WAP Wireless Application Protocol 1845WAP wireless access point 1846WDM Windows Driver Model 1847WDDM Windows Display Driver Model 1848WDT watchdog timer 1849WEP Wired Equivalent Privacy 1850WFI wait for interrupt 1851WFQ weighted fair queuing 1852WH write hit 1853WHEA Windows hardware error architecture 1854WIFI wireless fidelity 1855WLAN wireless local area network 1856WM write miss 1857WMF Windows meta file 1858WMI Windows Management Instrumentation 1859WOL Wake-on-LAN 1860WOM Wake-on-Modem 1861WOR Wake-on-Ring 1862WORM write once read many 1863WP WordPerfect 1864WP word processor 1865WP write protect 1866WPA Wi-Fi Protected Access 1867WPA2 Wi-Fi Protected Access II 1868WPAD web proxy auto-discovery protocol 1869WPS Wi-Fi Protected Setup 1870WRAM window random access memory 1871WS web services 1872WTC write through caching 1873WTD weighted tail drop 1874WWAN wireless wide area network 1875WWW world wide web 1876WYSIAYG what you see is all you get 1877WYSIWYG what you see is what you get 1878XBAR crossbar 1879XDMCP X Display Manager control protocol 1880XER XML encoding rules 1881XGA Extended Graphics Array 1882XHR XMLHttpRequest 1883XIP execute in place 1884XML Extensible Markup Language 1885XNA XNA's not acronymed 1886XNS Xerox network systems 1887XOR exclusive or 1888XP extreme programming 1889XSI X/Open System Interface 1890XSL extensible stylesheet language 1891XSLT extensible stylesheet language transformations 1892XSS cross site scripting 1893XT extended technology 1894XTACACS extended terminal access controller access-control system 1895XTI X/Open transport interface 1896XUL XML user interface language 1897YACC yet another compiler compiler 1898YAML YAML ain't markup language 1899YANG yet another next generation 1900YAWPFAPR you are welcome; please file a problem report 1901YP Yellow Pages 1902YTD year to date 1903ZAP ZFS attribute processor 1904ZBR zone bit recording 1905ZFOD zero-filled on demand 1906ZFS zettabyte file system 1907ZIF zero insertion force 1908ZIFS zero insertion force socket 1909ZIL ZFS intent log 1910ZMA zone multicast address 1911ZOI zero one infinity 1912ZOI zone of influence 1913ZPL ZFS Posix layer 1914ZVOL ZFS Volume 1915