acronyms.comp revision 1.403
1$NetBSD: acronyms.comp,v 1.403 2025/03/11 14:13:32 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 71APEI ACPI platform error interface 72APFS Apple file system 73API application programming interface 74APIC advanced programmable interrupt controller 75APIPA automatic private IP addressing 76APM advanced power management 77APM application performance management 78APT advanced persistent threat 79APU accelerated processing unit 80AQM active queue management 81ARAT always running APIC timer 82ARC Advanced RISC Computing 83ARC adaptive replacement cache 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 Apple software restore 108ASR address space register 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 162BMIC bus master interface controller 163BMP basic multilingual plane 164BMP bitmap image file 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 200BTB branch target buffer 201BTB board-to-board 202BTC bit test [and] complement 203BTM bus transport mechanism 204BTR bit test [and] reset 205BTS bit test [and] set 206BTS bug tracking system 207BUAG big ugly ASCII graphic 208BW bandwidth 209BWM block-write mode 210CA certificate authority 211CAC cryptographic access control 212CACLS change access control lists 213CAD computer-aided design 214CAM computer assisted manufacturing 215CAM conditional access module 216CAM content addressable memory 217CAN controller area network 218CARP Common Address Redundancy Protocol 219CAS column address strobe 220CAS compare and swap 221CAS computer algebra system 222CASE computer aided software engineering 223CAU control access unit 224CAV constant angular velocity 225CBC cipher block chaining 226CBR constant bit rate 227CC carbon copy 228CCC Chaos Computer Club 229CCD charge coupled device 230CCI co-channel interferer 231CCNUMA cache-coherent non-uniform memory access 232CCTL command completion time limit 233CD cache disable 234CD compact disc 235CDDA compact disc digital audio 236CDL compiler description language 237CDMA code division multiple access 238CDN content delivery network 239CDP Cisco Discovery Protocol 240CDRAM cache dynamic random access memory 241CE customer edge 242CER canonical encoding rules 243CERT computer emergency response team 244CET control flow enforcement technology 245CF compact flash 246CFB cipher feedback 247CFG context-free grammar 248CFG control-flow graph 249CFI control-flow integrity 250CG control gate 251CGA Color Graphics Adapter 252CGI common gateway interface 253CGN Carrier-Grade NAT 254CHAP Challenge-Handshake Authentication Protocol 255CHFS chip file system 256CHS cylinder/head/sector 257CI continuous integration 258CI {common,component} interface 259CIA confidentiality, integrity, availability 260CIDR Classless Inter-Domain Routing 261CIF common intermediate format 262CIFS Common Internet File System 263CIL common intermediate language 264CIR carrier-to-interference ratio 265CIS contact image sensor 266CISC complex instruction set {computer,computing} 267CJK Chinese, Japanese, [and] Korean 268CLF common log format 269CLI command line interface 270CLI common language infrastructure 271CLR common language runtime 272CLS common language specification 273CLTT closed loop thermal throttling 274CLUT color look-up table 275CLV constant linear velocity 276CM configuration management 277CMA concert multithread architecture 278CMC certificate management over CMS 279CMC chassis management controller 280CMC corrected machine check 281CMI control {management,method} interface 282CMOS complementary metal-oxide-semiconductor 283CMP chip multi-processing 284CMS content management system 285CMS cryptographic message syntax 286CMS {configuration,content,course} management system 287CMYK cyan magenta yellow black 288CN {common,canonical} name 289CNA CVE Numbering Authority 290CNC computer numerical control 291CNR carrier-to-noise ratio 292COA change of authority 293COF current operating frequency 294COFDM coded orthogonal frequency division multiplexing 295COFF common object file format 296COM component object model 297COM computer on module 298COMA cache-only memory architecture 299CORBA common object request broker architecture 300COS class of service 301COW copy-on-write 302CP continuous pilot 303CPA chosen-plaintext attack 304CPB core performance boost 305CPC central processor complex 306CPC cpu performance counters 307CPE common phase error 308CPE common platform enumeration 309CPER common platform error record 310CPG clock pulse generator 311CPI cycles per instruction 312CPL current privilege level 313CPLD complex programmable logic device 314CPP C preprocessor 315CPS characters per second 316CPS continuation-passing style 317CPT command pass through 318CPU central processing unit 319CR carriage return 320CRC cyclic redundancy check 321CRDT conflict-free replicated data type 322CRL carrier recovery loop 323CRLF carriage return line feed 324CRQC cryptanalytically relevant quantum computer 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 335CSIRT computer security incident response team 336CSMA carrier sense multiple access 337CSMA/CA carrier sense multiple access with collision avoidance 338CSMA/CD carrier sense multiple access with collision detection 339CSP communicating sequential processes 340CSP constrain satisfaction problems 341CSP content security policy 342CSP cryptographic service provider 343CSPM cloud security posture management 344CSR control [and] status registers 345CSRF cross-site request forgery 346CSRG Computer Systems Research Group 347CSS cascading style sheets 348CST common spanning tree 349CSU C start up 350CSV comma-separated values 351CTF compact c type format 352CTM close to metal 353CTR counter [mode] 354CTS clear to send 355CTS common type system 356CUA common user access 357CUT coordinated universal time 358CV control voltage 359CVE common vulnerabilities and exposures 360CVS Concurrent Versions System 361CVSS Common Vulnerability Scoring System 362DA destination address 363DAA distributed application architecture 364DAAP digital audio access protocol 365DAB digital audio broadcasting 366DAC digital [to] analog converter 367DAC discretionary access control 368DAD duplicate address detection 369DAE deterministic authenticated encryption 370DANE DNS-based Authentication of Named Entities 371DAO disk at once 372DAP Directory Access Protocol 373DAT digital audio tape 374DAT dynamic acceleration technology 375DB database 376DBA database administrator 377DBA dynamic bandwidth allocation 378DBB data bus buffer 379DBC design by contract 380DBL dynamic buffer limiting 381DBMS database management system 382DBS database server 383DC data center 384DC direct current 385DCC Direct Client-to-Client 386DCC direct cable connect 387DCD data carrier detect 388DCE data control equipment 389DCE distributed computing environment 390DCIM data center infrastructure management 391DCIM digital camera images 392DCL Digital Command Language 393DCOM distributed component object model 394DCOP Desktop COmmunication Protocol 395DCS data collection systems 396DCT discrete cosine transform 397DCU data cache unit 398DDC display data channel 399DDE dynamic data exchange 400DDI device drivers interface 401DDK device driver kit 402DDL data description language 403DDR double data rate 404DDS direct digital sound 405DDWG Digital Display Working Group 406DE debugging extensions 407DE desktop environment 408DEA data encryption algorithm 409DEC Digital Equipment Corporation 410DEK data encryption key 411DEP data execution prevention 412DER distinguished encoding rules 413DES Data Encryption Standard 414DF don't fragment 415DFA deterministic finite automaton 416DFC data flow control 417DFS depth first search 418DFS distributed file system 419DFSAN Data Flow Sanitizer 420DFT diagnostic function test 421DFT discrete Fourier transform 422DFZ default-free zone 423DGEMM double precision general matrix multiply 424DGL data generation language 425DH Diffie-Hellman 426DHCP Dynamic Host Configuration Protocol 427DIA dedicated Internet access 428DIB device independent bitmap 429DIFS distributed inter-frame space 430DIMM dual inline memory module 431DIRT design in real time 432DKI driver/kernel interface 433DL diode logic 434DL discrete logarithm 435DL download 436DLCI data link connection identifier 437DLE data link escape 438DLL dynamic link library 439DLNA digital living network alliance 440DLP discrete logarithm problem 441DMA direct memory access 442DMB data memory barrier (Arm) 443DMI desktop management interface 444DMS document management system 445DMT discrete multitone modulation 446DMU data management layer 447DNARD Digital network appliance reference design 448DND drag and drop 449DNLC directory name lookup cache 450DNS Domain Name System 451DNSBL Domain Name System Block List 452DNSSEC DNS Security Extensions 453DOE distributed object environment 454DOF data over fibre 455DOH DNS over HTTPS 456DOM document object model 457DOQ DNS over QUIC 458DOS denial of service 459DOS disk operating system 460DOT DNS over TLS 461DP DisplayPort 462DPAA data path acceleration architecture 463DPC deferred procedure call 464DPCM differential pulse code modulation 465DPD dead peer detection 466DPDK data plane development kit 467DPI deep packet inspection 468DPI dots per inch 469DPL descriptor privilege level 470DPS Display PostScript 471DPST display power savings technology 472DRAAS disaster recovery as a service 473DRAM dynamic random access memory 474DRBG deterministic random bit generator 475DRI direct rendering infrastructure 476DRM digital rights management 477DRM direct rendering manager 478DRN Discovery of Network-designated Resolvers 479DRRS display refresh rate switching 480DS debug store 481DS differentiated services 482DS delegation signer 483DS9000 DeathStation 9000 484DS9K DeathStation 9000 485DSA digital signature algorithm 486DSAP destination service access point 487DSB data synchronization barrier (Arm) 488DSB double-sideband modulation 489DSCP differentiated services code point 490DSDT differentiated system descriptor table 491DSF device special file 492DSL dataset and snapshot layer 493DSL digital subscriber line 494DSL domain specific language 495DSLAM digital subscriber line access multiplexer 496DSN delivery status notification 497DSO dynamic shared object 498DSP digital signal processor 499DSSS direct sequence spread spectrum 500DTB device tree blob 501DTC device tree compiler 502DTD document type definition 503DTE data terminal equipment 504DTE dumb terminal emulator 505DTL diode-transistor logic 506DTLS datagram transport layer security 507DTS device tree source 508DTS digital thermal sensor 509DUT device under test 510DVB digital video broadcasting 511DVCS distributed version control system 512DVD digital versatile disc 513DVFS dynamic voltage and frequency scaling 514DVI Digital Visual Interface 515DVI device independent 516DVR digital video recorder 517DWARF Debugging With Attributed Record Formats 518E-XER extended XML encoding rules 519EABI embedded-application binary interface 520EAI Email Address Internationalization 521EAI Enterprise Application Integration 522EAP Extensible Authentication Protocol 523EAPOL EAP over Lan 524EAV entity-attribute-value model 525EAV ethernet audio/video bridging 526EBCDIC Extended Binary Coded Decimal Interchange Code 527EBDA Extended BIOS Data Area 528EBNF extended backus-naur form 529EBR extended boot record 530EC elliptic curve 531ECC elliptic curve cryptography 532ECC error correction code 533ECDH elliptic curve Diffie-Hellman 534ECDL elliptic curve discrete logarithm 535ECDLP elliptic curve discrete logarithm problem 536ECDSA elliptic curve digital signature algorithm 537EDDSA Edwards-curve digital signature algorithm 538ECL emitter-coupled logic 539ECN explicit congestion notification 540ECP enhanced capability port 541ECS enhanced chip set 542ECS extended configuration space 543EDAC error detection and correction 544EDAT enhanced dynamic acceleration technology 545EDGE explicit data graph execution 546EDID extended display identification data 547EDO extended data out 548EDS electronical data sheet 549EDSAC electronic delay storage automatic calculator 550EDVAC electronic discrete variable automatic computer 551EEE embrace, extend, extinguish 552EEE energy efficient ethernet 553EEPROM electrically erasable programmable read only memory 554EFI extensible firmware interface 555EFL emitter follower logic 556EFM eight to fourteen modulation 557EFS extent file system 558EGA Enhanced Graphics Adapter 559EGP exterior gateway protocol 560EH extension header 561EIDE enhanced IDE 562EINJ error injection table 563EISA extended industry standard architecture 564ELF executable and linking format 565ELS entry level system 566EMACS Editor MACroS 567EMI electro-magnetic interference 568EMP electro-magnetic pulse 569EMR electro-magnetic radiation 570ENIAC electronic numerical integrator and computer 571EOF end of file 572EOI end of interrupt 573EOIS end of interactive support 574EOL end of life 575EOL end of line 576EOT end of transmission 577EPIC explicitly parallel instruction computing 578EPP enhanced parallel port 579EPP extensible provisioning protocol (RFC5730) 580EPRML extended partial response, maximum likelihood 581EPROM erasable programmable read only memory 582EPSS Exploit Prediction Scoring System 583EPT extended page tables 584ERC error recovery control 585ERD emergency recovery disk 586ERD entity relationship diagram 587ERE extended regular expression 588ERST error record serialization table 589ESAN Efficiency Sanitizer 590ESB enterprise service bus 591ESDI enhanced small disk interface 592ESDRAM enhanced synchronous dynamic random access memory 593ESI enclosure services interface 594ESS electronic switching system 595ESS extended service set 596ESSID extended service set identifier 597EST enhanced speedstep 598ETL extract, transform, load 599EU execution unit 600EULA end user license agreement 601EdDSA Edwards curve digital signature algorithm 602FAT file allocation table 603FBRAM frame buffer random access memory 604FCIF full common intermediate format 605FCL fiber channel loop 606FCS frame check sequence 607FDC floppy disk controller 608FDD floppy disk drive 609FDDI fiber distributed data interface 610FDE full disk encryption 611FDT flattened device tree 612FEA finite element analysis 613FEC forward error correction 614FET field-effect transistor 615FF finite field 616FF form feed 617FFDH finite-field Diffie-Hellman 618FFH functional fixed hardware 619FFI foreign function interface 620FFM focus follows mouse 621FFS Fast File System 622FFS find first set 623FFT fast Fourier transform 624FG floating gate 625FHRP first hop redundancy protocol 626FHSS frequency hop spread spectrum 627FID frequency identifier 628FIFO first in, first out 629FILO first in, last out 630FIPS Federal Information Processing Standards 631FIR fast infrared 632FLOPS floating [point] operations per second 633FLOSS free/libre/open source software 634FM frequency modulation 635FMR false match rate 636FOSS free/open source software 637FPGA field programmable gate array 638FPM fast page mode 639FPR floating point register 640FPU floating point unit 641FQDN fully qualified domain name 642FRR false rejection rate 643FRR Free Range Routing 644FRU field replaceable unit 645FS file system 646FSB front side bus 647FSCK file system check 648FSF Free Software Foundation 649FSK frequency shift keying 650FSM finite-state machine 651FTA fault tree analysis 652FTL flash translation layer 653FTP File Transfer Protocol 654FTPS File Transfer Protocol Secure 655FTTH fiber to the home 656FUS fast user switching 657FWH firmware hub 658FWS folding white space 659GAL generic array logic 660GARP generic attribute registration protocol 661GAS generic address structure 662GC garbage collector 663GCC GNU Compiler Collection 664GCM Galois counter mode 665GCR group-coded recording 666GDI Graphics Device Interface 667GDT global descriptor table 668GDT (block) group descriptor table 669GECOS general comprehensive operating supervisor 670GEM graphics environment manager 671GEM graphics execution manager 672GEMM general matrix multiply 673GENA general event notification architecture 674GHC Glasgow Haskell compiler 675GHES generic hardware error source 676GIC generic interrupt controller 677GID group identifier 678GIF graphics interchange format 679GLBP gateway load balancing protocol 680GMCH graphics and memory controller hub 681GNU GNU's Not Unix 682GOP graphics output protocol 683GOT global offset table 684GPE general purpose event 685GPF general protection fault 686GPG GNU Privacy Guard 687GPL [GNU] General Public License 688GPR general purpose register 689GPS generalized processor sharing 690GPT GUID partition table 691GPU graphics processing unit 692GR golden ratio 693GRE generic routing encapsulation 694GRO generic receive offload 695GSI global system interrupt 696GSO generic send offload 697GUA global unicast address 698GUI graphical user interface 699GUID globally unique identifier 700GUS Gravis UltraSound 701GVFS git virtual file system 702HA high availability 703HAL hardware abstraction layer 704HAT hashed array tree 705HATEOAS hypermedia as the engine of application state 706HBA host bus adapter 707HBS hash-based signature 708HCC Home Cable Computer 709HCCA Home Cable Computer Adaptor 710HCF halt and catch fire 711HCI host controller interface 712HCI human-computer interaction 713HCL hardware compatibility list 714HDCP High-bandwidth Digital Content Protection 715HDD hard disk drive 716HDL hardware description language 717HDMI High-Definition Multimedia Interface 718HDTV high-definition television 719HECI host embedded controller interface 720HEST hardware error source table 721HEVC high efficiency video coding 722HF high frequency 723HFM highest frequency mode 724HFS hierarchical file system 725HID human interface device 726HKDF HMAC-based key derivation function 727HKP HTTP Keyserver Protocol 728HLE hardware lock elision (Intel) 729HLL high-level language 730HMA high memory area 731HMI human-machine interface 732HNDL harvest now, decrypt later 733HOOD hierarchical object oriented design 734HOTP HMAC-based one time password 735HP Hewlett-Packard 736HPC high performance computing 737HPD hot plug detection 738HPET high precision event timer 739HPKE hybrid public key encryption 740HQC Hamming Quasi-Cyclic 741HSM hardware security module 742HSM hierarchical storage management 743HSRP hot standby router protocol 744HT hyper-threading 745HTC hardware thermal control 746HTCC high temperature co-fired ceramic 747HTML HyperText Markup Language 748HTT hyper-threading technology 749HTTP Hypertext Transfer Protocol 750HTTPS Hypertext Transfer Protocol Secure 751HVDS High-Voltage Differential Signaling 752HVM hardware virtual machine 753HWASAN Hardware-assisted Address Sanitizer 754HZ Hertz 755I2O intelligent input/output 756IA information assurance 757IAAS infrastructure as a service 758IAB Internet Architecture Board 759IANA Internet Assigned Numbers Authority 760IBC iterated block cipher 761IBM International Business Machines 762IBPI international blinking pattern interpretation 763IBS instruction based sampling 764IBSS independent basic service set 765IBT indirect branch tracking 766IC integrated circuit 767ICA independent computer architecture 768ICACLS integrity control access control lists 769ICB Internet Citizen's Band 770ICE in-circuit emulator 771ICE internal compiler error 772ICH I/O controller hub 773ICMP Internet Control Message Protocol 774ICT information and communications technology 775ICW initialization command word 776IDA Intel dynamic acceleration 777IDCMP Intuition direct communication message port 778IDCT inverse discrete cosine transform 779IDE integrated development environment 780IDE integrated drive electronics 781IDPS intrusion detection [and] prevention system 782IDRP inter-domain routing protocol 783IDS intrusion detection system 784IDT interrupt descriptor table 785IE Internet Explorer 786IEC International Electrotechnical Commission 787IEEE Institute of Electrical and Electronics Engineers 788IESG Internet Engineering Steering Group 789IETF Internet Engineering Task Force 790IF intermediate frequency 791IFCM isochronous flow control mode 792IFF Interchange File Format 793IFS internal field separator 794IGD Internet gateway device 795IGMP Internet Group Management Protocol 796IGP interior gateway protocol 797IHV independent hardware vendor 798IKE Internet key exchange 799IKM input keying material 800ILM internal loopback mode 801ILOM integrated lights-out management 802ILP instruction level parallelism 803IM instant messaging 804IMAP Internet Message Access Protocol 805IMC integrated memory controller 806IMCR interrupt mode configuration register 807IME input method editor 808IMR interrupt mask register 809IMS information management system 810IMSI international mobile subscriber identity 811INCITS InterNational Committee for Information Technology Standards 812INODE index node 813IO input/output 814IOCTL input/output control 815IOM input/output managers 816IOMMU input/output memory management unit 817IOT Internet of Things 818IP Internet Protocol 819IP intellectual property 820IPC instructions per cycle 821IPC interprocess communication 822IPCF interprocess communication facility 823IPE integrated programming environment 824IPI intelligent peripheral interface 825IPI interprocessor interrupt 826IPL Initial Program Load 827IPL Interrupt Priority Level 828IPMB Intelligent Platform Management Bus 829IPMI Intelligent Platform Management Interface 830IPNG Internet Protocol, Next Generation 831IPS in-plane switching 832IPS intrusion prevention system 833IPSEC Internet Protocol Security 834IR intermediate representation 835IRC Internet Relay Chat 836IRDA infrared data association 837IRDP ICMP Router Discovery Protocol 838IRQ interrupt request 839IRQL interrupt request level 840IRR interrupt request register 841IRTF Internet Research Task Force 842IS information system 843ISA industry standard architecture 844ISA instruction set architecture 845ISB instruction synchronization barrier (Arm) 846ISDN integrated services digital network 847ISE instant secure erase 848ISI inter-symbol interference 849ISL initial system load 850ISM industrial, scientific, [and] medical 851ISMS information system management system 852ISN initial serial number 853ISO International Standards Organization 854ISOC Internet Society 855ISP Internet service provider 856ISR in-service register 857ISR interrupt service routine 858IST internal spanning tree 859IST interrupt stack table 860ISV independent software vendor 861IT information technology 862ITB Intel Turbo Boost 863ITIL information technology infrastructure library 864ITP in-target probe 865ITSM IT service management 866IV initialization vector 867IVT interrupt vector table 868JBOD just a bunch of disks 869JCL Job Control Language 870JFET junction [gate] field-effect transistor 871JIT just in time 872JPEG Joint Photographic Experts Group 873JRE Java Runtime Environment 874JSON JavaScript Object Notation 875JTAG joint test action group 876KASAN Kernel Address Sanitizer 877KASLR kernel address space layout randomization 878KB keyboard 879KB kilobyte 880KBD keyboard 881KBD kilobaud 882KCS keyboard controller style 883KDF key derivation function 884KEK key encryption key 885KEM key encapsulation mechanism 886KLOC thousand lines of code 887KMS kernel-mode setting 888KPI kernel programming interface 889KSK key signing key 890KVA kernel virtual address 891KVM kernel virtual machine 892KVM kernel virtual memory 893KVM keyboard, video, [and] mouse 894L2CAP link layer control and adaptation protocol 895LAG link aggregation group 896LAMP Linux Apache MySQL {Perl,PHP,Python} 897LAN local area network 898LAPIC local advanced programmable interrupt controller 899LAR load access rights 900LBA logical block addressing 901LBNF labeled backus-naur form 902LBS location-based service 903LCD liquid crystal display 904LCP link control protocol 905LDA local delivery agent 906LDAP Lightweight Directory Access Protocol 907LDR light-dependent resistor 908LDT local descriptor table 909LE logical extent 910LED light emitting diode 911LELL low energy link layer 912LER label edge router 913LF line feed 914LF low frequency 915LFM lowest frequency mode 916LFN long file names 917LFO low-frequency oscillation 918LFS log-structured file system 919LFU least frequently used 920LHP loop heat pipe 921LIF logical interchange format 922LIFO last in, first out 923LILO LInux LOader 924LILO last in, last out 925LINT local interrupt 926LIR local Internet registry 927LISP LISt Processor 928LISP Locator/ID Separation Protocol 929LKM {Linux,loadable} kernel module 930LKML Linux kernel mailing list 931LL load linked 932LL/SC load linked/store conditional 933LLC logical link control 934LLD low-level design 935LLDD low-level design document 936LLDP link layer discovery protocol 937LLF low level format 938LLMNR link-local multicast name resolution 939LLVM Low Level Virtual Machine 940LM long mode 941LMCE local machine check exception 942LMI local management interface 943LMM link management mode 944LMP link management protocol 945LMS Leighton-Micali Signature 946LNO loop nest optimization 947LOC lines of code 948LOM lights-out management 949LPC low pin count 950LPE Linux performance events 951LPS local positioning system 952LRC longitudinal redundancy check 953LRM left-to-right mark 954LRO Large Receive Offload 955LRO left-to-right override 956LRU least recently used 957LS link state 958LSAN Leak Sanitizer 959LSB Linux standards base 960LSB least significant {bit,byte} 961LSI large scale integration 962LSL load segment limit 963LSM log structured merge 964LSN Large Scale NAT 965LSN log sequence number 966LSO large send offload 967LSR label switch router 968LTCC low temperature co-fired ceramic 969LTO linear tape-open 970LTO link time optimization 971LTR left to right 972LTR letter(-sized paper) 973LTR load task register 974LTS long term support 975LUA Lua Uppercase Accident 976LUN logical unit number 977LV logical volume 978LVDS Low-Voltage Differential Signaling 979LVM logical volume management 980LVT local vector table 981LWP light-weight process 982LZSS Lempel Ziv Storer Szymanski 983LZW Lempel Ziv Welch 984MAB MAC authentication bypass 985MAC mandatory access control 986MAC message authentication {check,code} 987MAC {media,medium} access control 988MADT multiple APIC descriptor table 989MAMR microwave-assisted magnetic recording 990MB megabyte 991MBA multi-boot agent 992MBR master boot record 993MBS megabits per second 994MC memory controller 995MCA MicroChannel architecture 996MCA machine check architecture 997MCC multiversion concurrency control 998MCE machine check exception 999MCGA Multi-Color Graphics Array 1000MCH memory controller hub 1001MCLAG multi-chassis link aggregation group 1002MCM multi-chip module 1003MCQ memory controlled queue 1004MD MiniDisc 1005MD machine-dependent 1006MD-SAL model-driven service abstraction layer 1007MDA Monochrome Display Adapter 1008MDA mail delivery agent 1009MDC Management Data Clock 1010MDI Medium Dependent Interface 1011MDI-X Medium Dependent Interface Crossover 1012MDIO Management Data Input/Output 1013MDMX MIPS Digital Media eXtension 1014MDRAM multibank dynamic random access memory 1015MDS microarchitectural data sampling 1016MESI modified, exclusive, shared, invalid 1017MFC Microsoft Foundation Classes 1018MFC merge from current 1019MFM modified frequency modulation 1020MFU most frequently used 1021MGCP media gateway control protocol 1022MHU message handling unit 1023MI machine interface 1024MI machine-independent 1025MIB management information base 1026MIC message integrity {check,code} 1027MID mobile Internet device 1028MIDI musical instrument digital interface 1029MIF management information format 1030MII media independent interface 1031MIM man in the middle 1032MIMD multiple instruction, multiple data 1033MIME Multipurpose Internet Mail Extensions 1034MIMO multiple input multiple output 1035MIPS Microprocessor without Interlocked Pipeline Stages 1036MIPS million instructions per second 1037MISD multiple instruction, single data 1038MIT Massachusetts Institute of Technology 1039MITM man in the middle 1040ML machine language 1041ML machine learning 1042ML mailing list 1043ML markup language 1044ML maximum likelihood 1045ML-KEM module-lattice based key-encapsulation mechanism 1046MLAG multi-chassis link aggregation group 1047MLC multi-level cell 1048MLD multicast listener discovery 1049MLHP micro loop heat pipe 1050MLIR multi-level intermediate representation 1051MLO MMC loader 1052MMC multi-media card 1053MMF multi-mode fiber 1054MMIC monolithic microwave integrated circuit 1055MMIO memory mapped input/output 1056MMORPG massive multiplayer online role playing game 1057MMRP multiple MAC registration protocol 1058MMU memory management unit 1059MMX matrix math extension 1060MMX multimedia extension 1061MMX multiple math extension 1062MO magneto-optical 1063MOESI modified, owned, exclusive, shared, invalid 1064MOF maximum operating frequency 1065MOSFET metal-oxide-semiconductor field-effect transistor 1066MOSI modified, owned, shared, invalid 1067MP multi-platform 1068MP multiplayer 1069MP {multiprocessing,multiprocessor} 1070MPEG moving picture experts group 1071MPI message passing interface 1072MPLS Multiprotocol Label Switching 1073MPP massively parallel processor 1074MPS memory pool system 1075MPS multiprocessor specification 1076MQTT Message Queuing Telemetry Transport 1077MR modem ready 1078MRO method resolution order 1079MRP multiple registration protocol 1080MRU most recently used 1081MS Microsoft 1082MSAN Memory Sanitizer 1083MSB most significant {bit,byte} 1084MSC message sequence chart 1085MSE mean square error 1086MSF minutes seconds frames 1087MSI message signaled interrupt 1088MSI modified, shared, invalid 1089MSR {machine state,model-specific} register 1090MSS maximum segment size 1091MSTP Multiple Spanning Tree Protocol 1092MT machine translation 1093MTA mail transfer agent 1094MTBF mean time between failures 1095MTP media transfer protocol 1096MTRR memory type range register 1097MTTF mean time to failure 1098MTU maximum transmission unit 1099MUA mail user agent 1100MUD multi-user domain 1101MVCC multiversion concurrency control 1102MVR multicast VLAN registration 1103MVRP multiple VLAN registration protocol 1104MWE module width encoding 1105MX mail exchange 1106MZM Majorana zero mode 1107NACK negative acknowledgement 1108NAK negative acknowledgement 1109NAN neighbor awareness networking 1110NAN not a number 1111NAPT Network Address Port Translation 1112NAS network attached storage 1113NAT network address translation 1114NAV network allocation vector 1115NC numerical control 1116NC-SI network controller sideband interface 1117NCO numerically-controlled oscillator 1118NCP Network Control Protocol 1119NCQ native command queuing 1120NCSI network connectivity status indicator 1121ND neighbor discovery 1122NDFA nondeterministic finite automaton 1123NDIS network driver interface specification 1124NE numeric error 1125NEWS Network extensible Window System 1126NFA nondeterministic finite automaton 1127NFC near-field communication 1128NFCI no functional change intended 1129NFS network file system 1130NFV network function virtualization 1131NHACP NABU HCCA Application Communication Protocol 1132NIA next instruction address 1133NIC network information center 1134NIC network interface card 1135NIDS network intrusion detection system 1136NIKE Non-Interactive Key Exchange 1137NIP network interface protocol 1138NIPR non-classified IP router (network) 1139NIPS network intrusion prevention system 1140NIS network information service 1141NIST National Institute of Standards and Technology 1142NLS native language support 1143NMI non-maskable interrupt 1144NMR nonce-misuse resistance 1145NNTP Network News Transfer Protocol 1146NOC network operations center 1147NOP no operation 1148NOS network operating system 1149NP nondeterministic polynomial time 1150NRND not recommended for new designs 1151NRZ non-return to zero 1152NSA National Security Agency 1153NSA nation-state adversary 1154NSA no such agency 1155NTA negative trust anchor 1156NTM non-deterministic Turing machine 1157NTP Network Time Protocol 1158NUMA non-uniform memory access 1159NURBS non-uniform rational basis spline 1160NVD National Vulnerability Database 1161NVMM NetBSD Virtual Machine Monitor 1162NVMM non-volatile main memory 1163NVRAM non-volatile random access memory 1164NW not write-through 1165NX no execute 1166OAEP optimal asymmetric encryption padding 1167OAM operations, administration, and {management,maintenance} 1168OBO off by one 1169OBOE off by one error 1170OCL object constraint language 1171OCR optical character recognition 1172ODBC Open Database Connectivity 1173ODCM on-demand clock modulation 1174ODE offline device environment 1175ODI open data-link interface 1176ODM object data manager 1177ODMR on-demand mail relay 1178ODT on-die termination 1179OEM original equipment manufacturer 1180OFB output feedback 1181OFDM orthogonal frequency division multiplexing 1182OFET organic field-effect transistor 1183OLAP online analytical processing 1184OLE object linking and embedding 1185OLTP online transaction processing 1186ONCE on-{chip,circuit} emulation 1187ONFI open nand flash interface 1188OO OpenOffice 1189OO object oriented 1190OOB out of band 1191OOE out of order execution 1192OOM out of memory 1193OOO OpenOffice.org 1194OOP object oriented programming 1195OOPS object oriented programming systems 1196OOSE object oriented software engineering 1197OPM operations per minute 1198OPS operations per second 1199OQL Object Query Language 1200ORB object request broker 1201ORM object-relational mapping 1202OS operating system 1203OSD object-based storage device 1204OSD open source definition 1205OSF open software foundation 1206OSI Open Source Initiative 1207OSI open systems interconnection 1208OSPF open shortest path first 1209OSPM OS power management 1210OSS open sound system 1211OSS open source software 1212OSVW operating system visible workarounds 1213OTP one time password 1214OTP open telecom platform 1215OU organizational unit 1216OUI organizationally unique identifier 1217OWASP Open Web Application Security Project 1218OWL Web Ontology Language 1219P2P PCI to PCI 1220P2P peer to peer 1221PA phase accumulator 1222PA physical address 1223PAAS platform as a service 1224PAC phase-amplitude converter 1225PAE physical address extension 1226PAGP port aggregation protocol 1227PAL phase alternating line 1228PAL programmable array logic 1229PAM pluggable authentication modules 1230PAM pulse amplitude modulation 1231PAP password authentication protocol 1232PAT page attribute table 1233PAT port address translation 1234PATA parallel ATA 1235PAX portable archive exchange 1236PBE pending break encoding 1237PBE programming by example 1238PBKDF password-based key derivation function 1239PBR partition boot record 1240PBX private branch exchange 1241PC personal computer 1242PC program counter 1243PCB Protocol Control Block 1244PCB printed circuit board 1245PCB process control block 1246PCBC propagating cipher block chaining 1247PCC Portable C Compiler 1248PCD page-level cache disable 1249PCE path computation element 1250PCE performance-monitor counter enable 1251PCEP Path Computation Element Protocol 1252PCH platform controller hub 1253PCI peripheral component interconnect 1254PCM phase change memory 1255PCM pulse code modulation 1256PCMCIA Personal Computer Memory Card International Association 1257PCP Port Control Protocol 1258PD public domain 1259PDA personal digital assistant 1260PDA pushdown automaton 1261PDAG propositional directed acyclic graph 1262PDB power distribution board 1263PDF portable document format 1264PDM pulse-duration modulation 1265PDN pull-down network 1266PDP page {descriptor,directory} page 1267PDS product data sheet 1268PDU protocol data unit 1269PE portable executable 1270PE protection enable 1271PE provider edge 1272PEAP Protected EAP 1273PECI platform environment control interface 1274PED PIN Entry Device 1275PEP protocol extension protocol 1276PER packed encoding rules 1277PFS perfect forward secrecy 1278PGAS partitioned global address space 1279PGE page global enable 1280PGO profile guided optimization 1281PGP Pretty Good Privacy 1282PHB PCI host bridge 1283PHP PHP: Hypertext Preprocessor 1284PIC performance instrumentation counters 1285PIC position independent code 1286PIC programmable interrupt controller 1287PICNIC problem in chair, not in computer 1288PID process id 1289PIE position independent executable 1290PIL Priority Interrupt Level 1291PIM personal information manager 1292PIM platform-independent model 1293PIO programmed input/output 1294PIPT physically indexed, physically tagged 1295PIQ prefetch input queue 1296PIR private information retrieval 1297PIT programmable interrupt timer 1298PIV personal identity verification 1299PIX Private Internet eXchange 1300PKCS public-key cryptography standards 1301PKE public key encryption 1302PKI public key infrastructure 1303PLC programmable logic controller 1304PLD programmable logic device 1305PLL phase locked loop 1306PLRU pseudo LRU 1307PLT procedure linkage table 1308PLTM package level thermal management 1309PM power management 1310PM {phase,pulse} modulation 1311PMC performance monitoring counters 1312PME power management event 1313PMEG page map entry group 1314PMI performance monitoring infrastructure 1315PMI platform management interrupt 1316PMIC power management integrated circuit 1317PMIO port-mapped input/output 1318PMT photo-multiplier tube 1319PMU performance monitoring units 1320PMU power management unit 1321PNG portable network graphics 1322PNP plug and play 1323POE power over ethernet 1324POF probability of failure 1325POP Post Office Protocol 1326POP power on password 1327POR plan of record 1328POSIX Portable Operating System Interface [for Unix] 1329POST power on self test 1330POTS plain old telephone system 1331POWER Performance Optimization With Enhanced RISC 1332POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1333PP pair programming 1334PPB PCI [to] PCI bridge 1335PPC Power Performance Computing 1336PPC PowerPC 1337PPI pixels per inch 1338PPM pages per minute 1339PPP Point-to-Point Protocol 1340PPPOA Point-to-Point Protocol over ATM 1341PPPOE Point-to-Point Protocol over Ethernet 1342PPR processor programming reference 1343PPT powerpoint 1344PPT punched paper tape 1345PPU physics processing unit 1346PQC post-quantum cryptography 1347PRAM Parameter RAM 1348PRBS pseudorandom bit sequence 1349PRF pseudorandom function [family] 1350PRG pseudorandom generator 1351PRML partial response, maximum likelihood 1352PRN pseudorandom {noise,number} 1353PRNG pseudorandom number generator 1354PROM programmable read only memory 1355PRP pseudorandom permutation 1356PRU Programmable Realtime Unit 1357PS PostScript 1358PSD power spectral density 1359PSE page size extensions 1360PSK phase shift keying 1361PSK pre-shared key 1362PSTN public switched telephone network 1363PSW program status word 1364PTE page table entry 1365PTLA pseudo top level aggregator 1366PTP page table page 1367PTV perceived target value 1368PU processing unit 1369PUC personal unblocking code 1370PUN physical unit number 1371PV physical volume 1372PVC permanent virtual circuit 1373PVG physical volume group 1374PVI protected-mode virtual interrupt 1375PVRST Per-VLAN rapid spanning tree 1376PVST Per-VLAN Spanning Tree 1377PWM pulse width modulation 1378PXE preboot execution environment 1379QA quality assurance 1380QAM quadrature amplitude modulation 1381QAM quality assurance management 1382QBE query by example 1383QC quality control 1384QCIF quarter common intermediate format 1385QDI quasi delay insensitive 1386QOI quality of implementation 1387QOI quick order interface 1388QOS quality of service 1389QPU quantum processing unit 1390QUIC Quick UDP Internet Connections 1391QVL qualified vendor list 1392R/O read only 1393R/W read/write 1394RA receiver address 1395RA remote assistance 1396RA resource affinity 1397RA router advertisement 1398RAD rapid application development 1399RADIUS remote authentication dial-in user service 1400RAID redundant array of {independent,inexpensive} disks 1401RAII resource acquisition is initialization 1402RAM random access memory 1403RAS reliability, availability and serviceability 1404RAS remote access service 1405RAS restartable atomic sequence 1406RAS row address strobe 1407RAT register allocation table 1408RAT remote access trojan 1409RBF radial basis function 1410RBL real-time blackhole list 1411RBL reputation block list 1412RBNF routing backus-naur form 1413RBT red-black tree 1414RC release candidate 1415RC remote control 1416RC run commands 1417RCS Revision Control System 1418RCU read, copy, update 1419RDB Rigid Disk Block 1420RDBMS relational database management system 1421RDF Resource Description Framework 1422RDM relational data model 1423RDMA remote direct memory access 1424RDP remote desktop protocol 1425RDRAM Rambus DRAM 1426RE regular expression 1427REPL read, evaluate, print, loop 1428REST representational state transfer 1429RF radio frequency 1430RFB remote frame buffer 1431RFI radio frequency interference 1432RFO request for ownership 1433RFU reserved for future use 1434RGB red green blue 1435RGBA red green blue alpha 1436RGMII reduced gigabit media independent interface 1437RH read hit 1438RHEL Red Hat Enterprise Linux 1439RHL Red Hat Linux 1440RIB routing information base 1441RIFF Resource Interchange File Format 1442RIP Raster Image Processor 1443RIP Routing Information Protocol 1444RIPR releasable IP router (network) 1445RIR regional Internet registry 1446RISC reduced instruction set {computer,computing} 1447RKM ROM Kernel Manual 1448RLE run length encoding 1449RLL run length limited 1450RLO right-to-left override 1451RM read miss 1452RMCP Remote Management Control Protocol 1453RMI remote method invocation 1454RMO Relaxed Memory Ordering 1455RMPM rapid memory power management 1456RMS root mean square 1457RMW read, modify, write 1458RNG random number generator 1459ROA route origin authorization 1460ROM read only memory 1461ROP return-oriented programming 1462RPC remote procedure call 1463RPG Report Program Generator 1464RPKI resource PKI 1465RPL requested privilege level 1466RPM revolutions per minute 1467RPN reverse Polish notation 1468RPVST Rapid Per-VLAN Spanning Tree 1469RR random replacement 1470RR resource record 1471RR round robin 1472RRSIG resource record signature 1473RS relay station 1474RSA Rivest, Shamir, [and] Adleman 1475RSC Receive Segment Coalescing 1476RSIP Realm Specific IP 1477RSN Robust Secure Network 1478RSS Receive Side Scaling 1479RSS really simple syndication 1480RSS residual sum of squares 1481RSTP Rapid Spanning Tree Protocol 1482RT real time 1483RTC real time clock 1484RTC real time computing 1485RTF rich text format 1486RTL register transfer language 1487RTL resistor-transistor logic 1488RTL right to left 1489RTM restricted transactional memory (Intel) 1490RTOS real time operating system 1491RTP Real-time Transport Protocol 1492RTS request to send 1493RTT round trip time 1494RTTI run-time type information 1495RUP rational unified process 1496RW Rabin-Williams 1497RWM read-write memory 1498RX {receive,receiver} 1499S/PDIF Sony/Philips Digital Interface Format 1500SA security advisory 1501SA security association 1502SA source address 1503SA structured analysis 1504SAAS software as a service 1505SABRE Semi-automated business research environment 1506SACD super audio compact disc 1507SAD security association database 1508SAF-TE SCSI accessed fault-tolerant enclosure 1509SAGE Semi-automated ground environment 1510SAL {service,system} abstraction layer 1511SAM serial access memory 1512SAM sum addressed memory 1513SAML security assertion markup language 1514SAN storage area network 1515SAP service access point 1516SAPIC streamlined advanced programmable interrupt controller 1517SASD structured analysis, structured design 1518SASI Shugart Associates System Interface 1519SASL simple authentication [and] security layer 1520SATA serial advanced technology attachment 1521SAX simple API for XML 1522SB sound blaster 1523SBI supervisor binary interface 1524SBOM Software Bill of Materials 1525SBSA server base system architecture 1526SBU standard build unit 1527SC store conditional 1528SCA source code analyzer 1529SCADA supervisory control and data acquisition 1530SCC single chip cloud 1531SCC source code control 1532SCCP skinny call control protocol 1533SCCS Source Code Control System 1534SCI scalable coherent interface 1535SCI system control interrupt 1536SCIM smart common input method 1537SCM software configuration management 1538SCM source code management 1539SCM storage-class memory 1540SCO synchronous connection orientated 1541SCP secure copy 1542SCP system control processor 1543SCPI system control and power interface 1544SCSI Small Computer System Interface 1545SCT Signed Certificate Timestamp 1546SCTP Stream Control Transmission Protocol 1547SDDC software defined data center 1548SDEI software delegated exception interface 1549SDI symbol deinterleave 1550SDK software development kit 1551SDL Simple Declarative Language 1552SDL Simple Direct-media Layer 1553SDLC {software,system,systems} development life cycle 1554SDN software defined networking 1555SDP Session Description Protocol 1556SDR software defined radio 1557SDRAM synchronous dynamic random access memory 1558SDS software defined storage 1559SDT syntax-directed translation 1560SEA synchronous external abort 1561SED self-encrypting drive 1562SED stream editor 1563SEGV segmentation violation 1564SEMB serial ATA enclosure management bridge 1565SEO search engine optimization 1566SES SCSI enclosure services 1567SFC sequential function chart 1568SFI simple firmware interface 1569SFI software fault isolation 1570SFP small form-factor pluggable 1571SFTP SSH File Transfer Protocol 1572SFTP Serial File Transfer Protocol 1573SFTP Simple File Transfer Protocol 1574SGI Silicon Graphics, Inc 1575SGI software generated interrupt 1576SGMII serial gigabit media independent interface 1577SGPIO serial general purpose input/output 1578SGRAM synchronous graphics random access memory 1579SHA secure hash algorithm 1580SICP structure and interpretation of computer programs 1581SIDH supersingular isogeny Diffie-Hellman 1582SIEM security information and event management 1583SIF source input format 1584SIFS short inter-frame space 1585SIM subscriber identity module 1586SIMD single instruction, multiple data 1587SIMM single inline memory module 1588SIP Session Initiation Protocol 1589SIPR secret IP router (network) 1590SIR signal-to-interference ratio 1591SIR slow infrared 1592SIRT security incident response team 1593SISD single instruction, single data 1594SIV synthetic intialization vector 1595SLAAC stateless address auto-configuration 1596SLC single-level cell 1597SLDRAM synchronous-link dynamic random access memory 1598SLED single large expensive disk 1599SLI scalable link interface 1600SLI scan-line interleave 1601SLIC system license internal code 1602SLOC source lines of code 1603SLRU segmented LRU 1604SMA smart memory access 1605SMAF system management action field 1606SMAP Simple Mail Access Protocol 1607SMAP supervisor mode access prevention 1608SMART self-monitoring analysis and reporting technology 1609SMB Server Message Block 1610SMB system management bus 1611SMBIOS System Management BIOS 1612SMC system management controller 1613SMD storage module device 1614SMEP supervisor mode execution protection 1615SMF single mode fiber 1616SMI structure of management information 1617SMI system management interrupt 1618SMM system management mode 1619SMP serial management protocol 1620SMP symmetric multiprocessing 1621SMR shingled magnetic recording 1622SMR state machine replication 1623SMT simultaneous multithreading 1624SMTP Simple Mail Transfer Protocol 1625SMU system management unit 1626SNA systems network architecture 1627SNAP Sub-Network Access Protocol 1628SNIA Storage Networking Industry Association 1629SNMP Simple Network Management Protocol 1630SNR signal-to-noise ratio 1631SOA service oriented architecture 1632SOAP Simple Object Access Protocol 1633SOC security operations center 1634SOC system on chip 1635SOF start of frame 1636SOH start of header 1637SOHO small office/home office 1638SOL serial over LAN 1639SOM system on module 1640SP service pack 1641SP stack pointer 1642SPA storage pool allocator 1643SPAN switched port analyzer 1644SPARC scalable processor architecture 1645SPARQL SPARQL Protocol and RDF Query Language 1646SPD security policy database 1647SPD serial presence detect 1648SPDIF Sony/Philips digital interface format 1649SPI serial peripheral interface 1650SPI stateful packet inspection 1651SPIR standard portable intermediate representation 1652SPL secondary program loader 1653SPL spinlock 1654SPL system interrupt priority level 1655SPMD single process, multiple data 1656SPR special purpose register 1657SPT sectors per track 1658SQA software quality assurance 1659SQCIF sub quarter common intermediate format 1660SQL Structured Query Language 1661SRAM static random access memory 1662SRC sample rate conversion 1663SRP SCSI RDMA protocol 1664SRR shaped round robin 1665SRTP Secure Real-time Transport Protocol 1666SS self-snoop 1667SS stack segment 1668SSA static single assignment 1669SSAP source service access point 1670SSB single-sideband modulation 1671SSB speculative store bypass 1672SSBB speculative store bypass barrier (Arm) 1673SSBD speculative store bypass disable (Intel) 1674SSC spread spectrum clock 1675SSD solid state drive 1676SSE streaming SIMD extensions 1677SSFDC solid state floppy disc card 1678SSH secure shell 1679SSI server side includes 1680SSID service set identifier 1681SSL secure sockets layer 1682SSP stack smashing protection 1683SSRF server-side request forgery 1684SSTP secure socket tunneling protocol 1685STC software thermal control 1686STD state transition diagram 1687STEK session ticket encryption key 1688STM software transactional memory 1689STOMP Streaming Text Oriented Messaging Protocol 1690STP Spanning Tree Protocol 1691STP shielded twisted pair 1692STRG spanning tree root guard 1693SUN Stanford University Network 1694SUS Single Unix Specification 1695SUT system under test 1696SVC switched virtual circuit 1697SVG scalable vector graphics 1698SVGA Super Video Graphics Array 1699SVI {switch,switched} virtual interface 1700SVM secure virtual machine 1701SVM support vector machine 1702SVR System V Release 1703SVS Separate Virtual Space 1704SWF Shockwave Flash 1705SWIG simplified wrapper [and] interface generator 1706SYR symbol timing recovery 1707TA test assertion 1708TA transmitter address 1709TAA transactional asynchronous abort (Intel) 1710TACACS terminal access controller access-control system 1711TAI international atomic time 1712TAO track at once 1713TAOCP The Art of Computer Programming 1714TAP Test Anything Protocol 1715TAS test and set 1716TB terabyte 1717TBNF transitional backus-naur form 1718TCB trace capture buffer 1719TCB trusted computing base 1720TCC thermal control circuit 1721TCL tool command language 1722TCP Transmission Control Protocol 1723TCQ tagged command queueing 1724TDC time [to] digital converter 1725TDD test-driven development 1726TDD time division duplex 1727TDM time division multiplexing 1728TDMA time division multiple access 1729TDOA time difference of arrival 1730TDP thermal design {point,power} 1731TDR time-domain reflectometry 1732TECO Text Editor and Corrector 1733TEE Trusted Execution Environment 1734TFT thin film transistor 1735TFTP Trivial File Transfer Protocol 1736TIAS try it and see 1737TIFF tagged image file format 1738TITS try it to see 1739TK temporal key 1740TKIP Temporal Key Integrity Protocol 1741TLA top level aggregator 1742TLB translation lookaside buffer 1743TLD top level domain 1744TLER time-limited error recovery 1745TLI transport layer interface 1746TLS thread local storage 1747TLS transport layer security 1748TLV type, length, value 1749TM Turing machine 1750TM thermal monitor 1751TMDS transition minimized differential signaling 1752TMG transmogrifier 1753TMO timeout 1754TOD time of day 1755TOE TCP offload engine 1756TOFU trust on first use 1757TOS terms of service 1758TOS trusted operating system 1759TOS type of service 1760TOTP time-based one time password 1761TP transaction processing 1762TPI tracks per inch 1763TPM transactions per minute 1764TPM trusted platform module 1765TPR task priority register 1766TPS transactions per second 1767TPS transmission parameters signaling 1768TR task register 1769TR token ring 1770TRL timing recovery loop 1771TRNG true random number generator 1772TS terminal services 1773TS time series 1774TS time stamp 1775TS transport stream 1776TSAN Thread Sanitizer 1777TSC time stamp counter 1778TSD time stamp disable 1779TSDB time series database 1780TSL test, set, lock 1781TSO TCP segmentation offload 1782TSO Total Store Ordering 1783TSO time sharing option 1784TSP Time-Stamp Protocol 1785TSP Tunnel Setup Protocol 1786TSP time synchronization protocol 1787TSP traveling salesman problem 1788TSS task state segment 1789TSV tab-separated values 1790TSX transaction synchronization extensions (Intel) 1791TTL time to live 1792TTL transistor-transistor logic 1793TTM translation table maps 1794TTY teletype 1795TU translation unit 1796TUI {terminal,text-based,textual} user interface 1797TX {transmit out,transmitter} 1798TXG transaction group 1799TZ time zone 1800UAC user {access,account} control 1801UAF use-after-free 1802UART universal asynchronous receiver/transmitter 1803UAT user acceptance testing 1804UB undefined behavior 1805UBSAN Undefined Behavior Sanitizer 1806UC uncacheable 1807UCS unified computing system 1808UCS uniform-cost search 1809UCS universal coded character set 1810UDI uniform driver interface 1811UDMA ultra DMA 1812UDO ultra density optical 1813UDP User Datagram Protocol 1814UDS Unix Domain Socket 1815UEFI unified extensible firmware interface 1816UFO UDP fragmentation offload 1817UFS Unix File System 1818UGA universal graphics adapter 1819UI unit interval 1820UI user interface 1821UICC universal integrated circuit card 1822UID unique identifier 1823UID user identifier 1824UL upload 1825ULA unique local address 1826UMA uniform memory access 1827UMA upper memory area 1828UMB upper memory block 1829UML unified modeling language 1830UMPC ultra-mobile PC 1831UPNP universal plug and play 1832UPS uninterruptible power supply 1833URI uniform resource identifier 1834URL uniform resource locator 1835URN uniform resource name 1836USART universal synchronous/asynchronous receiver/transmitter 1837USB universal serial bus 1838USWC uncacheable speculative write combining 1839UT unit test 1840UTC coordinated universal time 1841UTF unicode transformation formats 1842UTP unshielded twisted pair 1843UTS UNIX time-sharing 1844UUCP Unix-to-Unix Copy Protocol 1845UUID universally unique identifier 1846UUOC useless use of cat 1847UUT unit under test 1848UX user experience 1849VA vertical alignment 1850VA virtual address 1851VA volt-ampere 1852VAX virtual address extension 1853VB Visual Basic 1854VBR volume boot record 1855VCA variable-gain amplifier 1856VCC common collector voltage 1857VCCP virtual chassis control protocol 1858VCF voltage-controlled filter 1859VCM virtual channel memory 1860VCO voltage-controlled oscillator 1861VCP virtual chassis port 1862VCS version control system 1863VDP vulnerability disclosure policy 1864VDPAU Video Decode and Presentation API for Unix 1865VES virtual execution system 1866VESA Video Electronics Standards Association 1867VFO variable-frequency oscillator 1868VFS virtual file system 1869VG volume group 1870VGA Video Graphics Array 1871VHD virtual hard disk 1872VHDCI very high density cable interconnect 1873VID {VLAN,voltage level} identifier 1874VIM Vi IMproved 1875VIPT virtually indexed, physically tagged 1876VIVT virtually indexed, virtually tagged 1877VLAN virtual local area network 1878VLD variable-length decoding 1879VLIW very long instruction word 1880VLSI very large scale integration 1881VLSM variable length subnet mask 1882VM virtual {machine,memory} 1883VME virtual mode extension 1884VMX vector multimedia extensions 1885VMX virtual machine extensions 1886VNC virtual network computing 1887VNI virtual network identifier 1888VOD video on demand 1889VPD vital product data 1890VPN virtual private network 1891VPWS virtual private wire service 1892VR virtual reality 1893VRAM video random access memory 1894VRF virtual routing and forwarding 1895VRM voltage regulator module 1896VROC Virtual RAID On CPU 1897VRRP Virtual Router Redundancy Protocol 1898VSTP VLAN Spanning Tree Protocol 1899VTEP VXLAN tunnel endpoint 1900VTP VLAN Trunking Protocol 1901VXFS Veritas file system 1902VXLAN virtual extensible LAN 1903VXVM Veritas volume manager 1904W watt 1905W3C World Wide Web Consortium 1906WAFL write anywhere file layout 1907WAMP Web Application Messaging Protocol 1908WAN wide area network 1909WAP Wireless Application Protocol 1910WAP wireless access point 1911WDDM Windows Display Driver Model 1912WDM Wavelength Division Multiplexing 1913WDM Windows Driver Model 1914WDT watchdog timer 1915WEP Wired Equivalent Privacy 1916WFI wait for interrupt 1917WFQ weighted fair queuing 1918WH write hit 1919WHEA Windows hardware error architecture 1920WIFI wireless fidelity 1921WLAN wireless local area network 1922WM write miss 1923WMF Windows meta file 1924WMI Windows Management Instrumentation 1925WOL Wake-on-LAN 1926WOM Wake-on-Modem 1927WOR Wake-on-Ring 1928WORM write once read many 1929WP WordPerfect 1930WP word processor 1931WP write protect 1932WPA Wi-Fi Protected Access 1933WPA2 Wi-Fi Protected Access II 1934WPAD web proxy auto-discovery protocol 1935WPS Wi-Fi Protected Setup 1936WRAM window random access memory 1937WS web services 1938WTC write through caching 1939WTD weighted tail drop 1940WWAN wireless wide area network 1941WWW world wide web 1942WYSIAYG what you see is all you get 1943WYSIWYG what you see is what you get 1944XBAR crossbar 1945XDMCP X Display Manager control protocol 1946XER XML encoding rules 1947XGA Extended Graphics Array 1948XHR XMLHttpRequest 1949XIP execute in place 1950XML Extensible Markup Language 1951XMSS eXtended Merkle Signature Scheme 1952XNA XNA's not acronymed 1953XNS Xerox network systems 1954XOF eXtendable-Output Function 1955XOR exclusive or 1956XP extreme programming 1957XSI X/Open System Interface 1958XSL extensible stylesheet language 1959XSLT extensible stylesheet language transformations 1960XSS cross site scripting 1961XT extended technology 1962XTACACS extended terminal access controller access-control system 1963XTI X/Open transport interface 1964XUL XML user interface language 1965YACC yet another compiler compiler 1966YAML YAML ain't markup language 1967YANG yet another next generation 1968YAWPFAPR you are welcome; please file a problem report 1969YP Yellow Pages 1970YTD year to date 1971ZAP ZFS attribute processor 1972ZBR zone bit recording 1973ZFOD zero-filled on demand 1974ZFS zettabyte file system 1975ZIF zero insertion force 1976ZIFS zero insertion force socket 1977ZIL ZFS intent log 1978ZMA zone multicast address 1979ZOI zero one infinity 1980ZOI zone of influence 1981ZPL ZFS Posix layer 1982ZSK zone signing key 1983ZVOL ZFS Volume 1984