acronyms.comp revision 1.397
1$NetBSD: acronyms.comp,v 1.397 2025/01/24 19:43:55 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 482DS9000 DeathStation 9000 483DS9K DeathStation 9000 484DSA digital signature algorithm 485DSAP destination service access point 486DSB data synchronization barrier (Arm) 487DSB double-sideband modulation 488DSCP differentiated services code point 489DSDT differentiated system descriptor table 490DSF device special file 491DSL dataset and snapshot layer 492DSL digital subscriber line 493DSL domain specific language 494DSLAM digital subscriber line access multiplexer 495DSN delivery status notification 496DSO dynamic shared object 497DSP digital signal processor 498DSSS direct sequence spread spectrum 499DTB device tree blob 500DTC device tree compiler 501DTD document type definition 502DTE data terminal equipment 503DTE dumb terminal emulator 504DTL diode-transistor logic 505DTLS datagram transport layer security 506DTS device tree source 507DTS digital thermal sensor 508DUT device under test 509DVB digital video broadcasting 510DVCS distributed version control system 511DVD digital versatile disc 512DVFS dynamic voltage and frequency scaling 513DVI Digital Visual Interface 514DVI device independent 515DVR digital video recorder 516DWARF Debugging With Attributed Record Formats 517E-XER extended XML encoding rules 518EABI embedded-application binary interface 519EAI Email Address Internationalization 520EAI Enterprise Application Integration 521EAP Extensible Authentication Protocol 522EAPOL EAP over Lan 523EAV entity-attribute-value model 524EAV ethernet audio/video bridging 525EBCDIC Extended Binary Coded Decimal Interchange Code 526EBDA Extended BIOS Data Area 527EBNF extended backus-naur form 528EBR extended boot record 529EC elliptic curve 530ECC elliptic curve cryptography 531ECC error correction code 532ECDH elliptic curve Diffie-Hellman 533ECDL elliptic curve discrete logarithm 534ECDLP elliptic curve discrete logarithm problem 535ECDSA elliptic curve digital signature algorithm 536EDDSA Edwards-curve digital signature algorithm 537ECL emitter-coupled logic 538ECN explicit congestion notification 539ECP enhanced capability port 540ECS enhanced chip set 541ECS extended configuration space 542EDAC error detection and correction 543EDAT enhanced dynamic acceleration technology 544EDGE explicit data graph execution 545EDID extended display identification data 546EDO extended data out 547EDS electronical data sheet 548EDSAC electronic delay storage automatic calculator 549EDVAC electronic discrete variable automatic computer 550EEE embrace, extend, extinguish 551EEE energy efficient ethernet 552EEPROM electrically erasable programmable read only memory 553EFI extensible firmware interface 554EFL emitter follower logic 555EFM eight to fourteen modulation 556EFS extent file system 557EGA Enhanced Graphics Adapter 558EGP exterior gateway protocol 559EH extension header 560EIDE enhanced IDE 561EINJ error injection table 562EISA extended industry standard architecture 563ELF executable and linking format 564ELS entry level system 565EMACS Editor MACroS 566EMI electro-magnetic interference 567EMP electro-magnetic pulse 568EMR electro-magnetic radiation 569ENIAC electronic numerical integrator and computer 570EOF end of file 571EOI end of interrupt 572EOIS end of interactive support 573EOL end of life 574EOL end of line 575EOT end of transmission 576EPIC explicitly parallel instruction computing 577EPP enhanced parallel port 578EPP extensible provisioning protocol (RFC5730) 579EPRML extended partial response, maximum likelihood 580EPROM erasable programmable read only memory 581EPSS Exploit Prediction Scoring System 582EPT extended page tables 583ERC error recovery control 584ERD emergency recovery disk 585ERD entity relationship diagram 586ERE extended regular expression 587ERST error record serialization table 588ESAN Efficiency Sanitizer 589ESB enterprise service bus 590ESDI enhanced small disk interface 591ESDRAM enhanced synchronous dynamic random access memory 592ESI enclosure services interface 593ESS electronic switching system 594ESS extended service set 595ESSID extended service set identifier 596EST enhanced speedstep 597ETL extract, transform, load 598EU execution unit 599EULA end user license agreement 600EdDSA Edwards curve digital signature algorithm 601FAT file allocation table 602FBRAM frame buffer random access memory 603FCIF full common intermediate format 604FCL fiber channel loop 605FCS frame check sequence 606FDC floppy disk controller 607FDD floppy disk drive 608FDDI fiber distributed data interface 609FDE full disk encryption 610FDT flattened device tree 611FEA finite element analysis 612FEC forward error correction 613FET field-effect transistor 614FF finite field 615FF form feed 616FFDH finite-field Diffie-Hellman 617FFH functional fixed hardware 618FFI foreign function interface 619FFM focus follows mouse 620FFS Fast File System 621FFS find first set 622FFT fast Fourier transform 623FG floating gate 624FHRP first hop redundancy protocol 625FHSS frequency hop spread spectrum 626FID frequency identifier 627FIFO first in, first out 628FILO first in, last out 629FIPS Federal Information Processing Standards 630FIR fast infrared 631FLOPS floating [point] operations per second 632FLOSS free/libre/open source software 633FM frequency modulation 634FMR false match rate 635FOSS free/open source software 636FPGA field programmable gate array 637FPM fast page mode 638FPR floating point register 639FPU floating point unit 640FQDN fully qualified domain name 641FRR false rejection rate 642FRR Free Range Routing 643FRU field replaceable unit 644FS file system 645FSB front side bus 646FSCK file system check 647FSF Free Software Foundation 648FSK frequency shift keying 649FSM finite-state machine 650FTA fault tree analysis 651FTL flash translation layer 652FTP File Transfer Protocol 653FTPS File Transfer Protocol Secure 654FTTH fiber to the home 655FUS fast user switching 656FWH firmware hub 657FWS folding white space 658GAL generic array logic 659GARP generic attribute registration protocol 660GAS generic address structure 661GC garbage collector 662GCC GNU Compiler Collection 663GCM Galois counter mode 664GCR group-coded recording 665GDI Graphics Device Interface 666GDT global descriptor table 667GECOS general comprehensive operating supervisor 668GEM graphics environment manager 669GEM graphics execution manager 670GEMM general matrix multiply 671GENA general event notification architecture 672GHC Glasgow Haskell compiler 673GHES generic hardware error source 674GIC generic interrupt controller 675GID group identifier 676GIF graphics interchange format 677GLBP gateway load balancing protocol 678GMCH graphics and memory controller hub 679GNU GNU's Not Unix 680GOP graphics output protocol 681GOT global offset table 682GPE general purpose event 683GPF general protection fault 684GPG GNU Privacy Guard 685GPL [GNU] General Public License 686GPR general purpose register 687GPS generalized processor sharing 688GPT GUID partition table 689GPU graphics processing unit 690GR golden ratio 691GRE generic routing encapsulation 692GRO generic receive offload 693GSI global system interrupt 694GSO generic send offload 695GUI graphical user interface 696GUID globally unique identifier 697GUS Gravis UltraSound 698GVFS git virtual file system 699HA high availability 700HAL hardware abstraction layer 701HAT hashed array tree 702HATEOAS hypermedia as the engine of application state 703HBA host bus adapter 704HBS hash-based signature 705HCC Home Cable Computer 706HCCA Home Cable Computer Adaptor 707HCF halt and catch fire 708HCI host controller interface 709HCI human-computer interaction 710HCL hardware compatibility list 711HDCP High-bandwidth Digital Content Protection 712HDD hard disk drive 713HDL hardware description language 714HDMI High-Definition Multimedia Interface 715HDTV high-definition television 716HECI host embedded controller interface 717HEST hardware error source table 718HEVC high efficiency video coding 719HF high frequency 720HFM highest frequency mode 721HFS hierarchical file system 722HID human interface device 723HKDF HMAC-based key derivation function 724HKP HTTP Keyserver Protocol 725HLE hardware lock elision (Intel) 726HLL high-level language 727HMA high memory area 728HMI human-machine interface 729HNDL harvest now, decrypt later 730HOOD hierarchical object oriented design 731HOTP HMAC-based one time password 732HP Hewlett-Packard 733HPC high performance computing 734HPD hot plug detection 735HPET high precision event timer 736HPKE hybrid public key encryption 737HSM hardware security module 738HSM hierarchical storage management 739HSRP hot standby router protocol 740HT hyper-threading 741HTC hardware thermal control 742HTCC high temperature co-fired ceramic 743HTML HyperText Markup Language 744HTT hyper-threading technology 745HTTP Hypertext Transfer Protocol 746HTTPS Hypertext Transfer Protocol Secure 747HVDS High-Voltage Differential Signaling 748HVM hardware virtual machine 749HWASAN Hardware-assisted Address Sanitizer 750HZ Hertz 751I2O intelligent input/output 752IA information assurance 753IAAS infrastructure as a service 754IAB Internet Architecture Board 755IANA Internet Assigned Numbers Authority 756IBC iterated block cipher 757IBM International Business Machines 758IBPI international blinking pattern interpretation 759IBS instruction based sampling 760IBSS independent basic service set 761IBT indirect branch tracking 762IC integrated circuit 763ICA independent computer architecture 764ICACLS integrity control access control lists 765ICB Internet Citizen's Band 766ICE in-circuit emulator 767ICE internal compiler error 768ICH I/O controller hub 769ICMP Internet Control Message Protocol 770ICT information and communications technology 771ICW initialization command word 772IDA Intel dynamic acceleration 773IDCMP Intuition direct communication message port 774IDCT inverse discrete cosine transform 775IDE integrated development environment 776IDE integrated drive electronics 777IDPS intrusion detection [and] prevention system 778IDRP inter-domain routing protocol 779IDS intrusion detection system 780IDT interrupt descriptor table 781IE Internet Explorer 782IEC International Electrotechnical Commission 783IEEE Institute of Electrical and Electronics Engineers 784IESG Internet Engineering Steering Group 785IETF Internet Engineering Task Force 786IF intermediate frequency 787IFCM isochronous flow control mode 788IFF Interchange File Format 789IFS internal field separator 790IGD Internet gateway device 791IGMP Internet Group Management Protocol 792IGP interior gateway protocol 793IHV independent hardware vendor 794IKE Internet key exchange 795IKM input keying material 796ILM internal loopback mode 797ILOM integrated lights-out management 798ILP instruction level parallelism 799IM instant messaging 800IMAP Internet Message Access Protocol 801IMC integrated memory controller 802IMCR interrupt mode configuration register 803IME input method editor 804IMR interrupt mask register 805IMS information management system 806IMSI international mobile subscriber identity 807INCITS InterNational Committee for Information Technology Standards 808INODE index node 809IO input/output 810IOCTL input/output control 811IOM input/output managers 812IOMMU input/output memory management unit 813IOT Internet of Things 814IP Internet Protocol 815IP intellectual property 816IPC instructions per cycle 817IPC interprocess communication 818IPCF interprocess communication facility 819IPE integrated programming environment 820IPI intelligent peripheral interface 821IPI interprocessor interrupt 822IPL Initial Program Load 823IPL Interrupt Priority Level 824IPMB Intelligent Platform Management Bus 825IPMI Intelligent Platform Management Interface 826IPNG Internet Protocol, Next Generation 827IPS in-plane switching 828IPS intrusion prevention system 829IPSEC Internet Protocol Security 830IR intermediate representation 831IRC Internet Relay Chat 832IRDA infrared data association 833IRDP ICMP Router Discovery Protocol 834IRQ interrupt request 835IRQL interrupt request level 836IRR interrupt request register 837IRTF Internet Research Task Force 838IS information system 839ISA industry standard architecture 840ISA instruction set architecture 841ISB instruction synchronization barrier (Arm) 842ISDN integrated services digital network 843ISE instant secure erase 844ISI inter-symbol interference 845ISL initial system load 846ISM industrial, scientific, [and] medical 847ISMS information system management system 848ISN initial serial number 849ISO International Standards Organization 850ISOC Internet Society 851ISP Internet service provider 852ISR in-service register 853ISR interrupt service routine 854IST internal spanning tree 855IST interrupt stack table 856ISV independent software vendor 857IT information technology 858ITB Intel Turbo Boost 859ITIL information technology infrastructure library 860ITP in-target probe 861ITSM IT service management 862IV initialization vector 863IVT interrupt vector table 864JBOD just a bunch of disks 865JCL Job Control Language 866JFET junction [gate] field-effect transistor 867JIT just in time 868JPEG Joint Photographic Experts Group 869JRE Java Runtime Environment 870JSON JavaScript Object Notation 871JTAG joint test action group 872KASAN Kernel Address Sanitizer 873KASLR kernel address space layout randomization 874KB keyboard 875KB kilobyte 876KBD keyboard 877KBD kilobaud 878KCS keyboard controller style 879KDF key derivation function 880KEK key encryption key 881KEM key encapsulation mechanism 882KLOC thousand lines of code 883KMS kernel-mode setting 884KPI kernel programming interface 885KVA kernel virtual address 886KVM kernel virtual machine 887KVM kernel virtual memory 888KVM keyboard, video, [and] mouse 889L2CAP link layer control and adaptation protocol 890LAG link aggregation group 891LAMP Linux Apache MySQL {Perl,PHP,Python} 892LAN local area network 893LAPIC local advanced programmable interrupt controller 894LAR load access rights 895LBA logical block addressing 896LBNF labeled backus-naur form 897LBS location-based service 898LCD liquid crystal display 899LCP link control protocol 900LDA local delivery agent 901LDAP Lightweight Directory Access Protocol 902LDR light-dependent resistor 903LDT local descriptor table 904LE logical extent 905LED light emitting diode 906LELL low energy link layer 907LER label edge router 908LF line feed 909LF low frequency 910LFM lowest frequency mode 911LFN long file names 912LFO low-frequency oscillation 913LFS log-structured file system 914LFU least frequently used 915LHP loop heat pipe 916LIF logical interchange format 917LIFO last in, first out 918LILO LInux LOader 919LILO last in, last out 920LINT local interrupt 921LIR local Internet registry 922LISP LISt Processor 923LISP Locator/ID Separation Protocol 924LKM {Linux,loadable} kernel module 925LKML Linux kernel mailing list 926LL load linked 927LL/SC load linked/store conditional 928LLC logical link control 929LLD low-level design 930LLDD low-level design document 931LLDP link layer discovery protocol 932LLF low level format 933LLMNR link-local multicast name resolution 934LLVM Low Level Virtual Machine 935LM long mode 936LMCE local machine check exception 937LMI local management interface 938LMM link management mode 939LMP link management protocol 940LMS Leighton-Micali Signature 941LNO loop nest optimization 942LOC lines of code 943LOM lights-out management 944LPC low pin count 945LPE Linux performance events 946LPS local positioning system 947LRC longitudinal redundancy check 948LRM left-to-right mark 949LRO Large Receive Offload 950LRO left-to-right override 951LRU least recently used 952LS link state 953LSAN Leak Sanitizer 954LSB Linux standards base 955LSB least significant {bit,byte} 956LSI large scale integration 957LSL load segment limit 958LSM log structured merge 959LSN Large Scale NAT 960LSN log sequence number 961LSO large send offload 962LSR label switch router 963LTCC low temperature co-fired ceramic 964LTO linear tape-open 965LTO link time optimization 966LTR left to right 967LTR letter(-sized paper) 968LTR load task register 969LTS long term support 970LUA Lua Uppercase Accident 971LUN logical unit number 972LV logical volume 973LVDS Low-Voltage Differential Signaling 974LVM logical volume management 975LVT local vector table 976LWP light-weight process 977LZSS Lempel Ziv Storer Szymanski 978LZW Lempel Ziv Welch 979MAB MAC authentication bypass 980MAC mandatory access control 981MAC message authentication {check,code} 982MAC {media,medium} access control 983MADT multiple APIC descriptor table 984MAMR microwave-assisted magnetic recording 985MB megabyte 986MBA multi-boot agent 987MBR master boot record 988MBS megabits per second 989MC memory controller 990MCA MicroChannel architecture 991MCA machine check architecture 992MCC multiversion concurrency control 993MCE machine check exception 994MCGA Multi-Color Graphics Array 995MCH memory controller hub 996MCLAG multi-chassis link aggregation group 997MCM multi-chip module 998MCQ memory controlled queue 999MD MiniDisc 1000MD machine-dependent 1001MD-SAL model-driven service abstraction layer 1002MDA Monochrome Display Adapter 1003MDA mail delivery agent 1004MDC Management Data Clock 1005MDI Medium Dependent Interface 1006MDI-X Medium Dependent Interface Crossover 1007MDIO Management Data Input/Output 1008MDMX MIPS Digital Media eXtension 1009MDRAM multibank dynamic random access memory 1010MDS microarchitectural data sampling 1011MESI modified, exclusive, shared, invalid 1012MFC Microsoft Foundation Classes 1013MFC merge from current 1014MFM modified frequency modulation 1015MFU most frequently used 1016MGCP media gateway control protocol 1017MHU message handling unit 1018MI machine interface 1019MI machine-independent 1020MIB management information base 1021MIC message integrity {check,code} 1022MID mobile Internet device 1023MIDI musical instrument digital interface 1024MIF management information format 1025MII media independent interface 1026MIM man in the middle 1027MIMD multiple instruction, multiple data 1028MIME Multipurpose Internet Mail Extensions 1029MIMO multiple input multiple output 1030MIPS Microprocessor without Interlocked Pipeline Stages 1031MIPS million instructions per second 1032MISD multiple instruction, single data 1033MIT Massachusetts Institute of Technology 1034MITM man in the middle 1035ML machine language 1036ML machine learning 1037ML mailing list 1038ML markup language 1039ML maximum likelihood 1040ML-KEM module-lattice based key-encapsulation mechanism 1041MLAG multi-chassis link aggregation group 1042MLC multi-level cell 1043MLD multicast listener discovery 1044MLHP micro loop heat pipe 1045MLIR multi-level intermediate representation 1046MLO MMC loader 1047MMC multi-media card 1048MMF multi-mode fiber 1049MMIC monolithic microwave integrated circuit 1050MMIO memory mapped input/output 1051MMORPG massive multiplayer online role playing game 1052MMRP multiple MAC registration protocol 1053MMU memory management unit 1054MMX matrix math extension 1055MMX multimedia extension 1056MMX multiple math extension 1057MO magneto-optical 1058MOESI modified, owned, exclusive, shared, invalid 1059MOF maximum operating frequency 1060MOSFET metal-oxide-semiconductor field-effect transistor 1061MOSI modified, owned, shared, invalid 1062MP multi-platform 1063MP multiplayer 1064MP {multiprocessing,multiprocessor} 1065MPEG moving picture experts group 1066MPI message passing interface 1067MPLS Multiprotocol Label Switching 1068MPP massively parallel processor 1069MPS memory pool system 1070MPS multiprocessor specification 1071MQTT Message Queuing Telemetry Transport 1072MR modem ready 1073MRO method resolution order 1074MRP multiple registration protocol 1075MRU most recently used 1076MS Microsoft 1077MSAN Memory Sanitizer 1078MSB most significant {bit,byte} 1079MSC message sequence chart 1080MSE mean square error 1081MSF minutes seconds frames 1082MSI message signaled interrupt 1083MSI modified, shared, invalid 1084MSR {machine state,model-specific} register 1085MSS maximum segment size 1086MSTP Multiple Spanning Tree Protocol 1087MT machine translation 1088MTA mail transfer agent 1089MTBF mean time between failures 1090MTP media transfer protocol 1091MTRR memory type range register 1092MTTF mean time to failure 1093MTU maximum transmission unit 1094MUA mail user agent 1095MUD multi-user domain 1096MVCC multiversion concurrency control 1097MVR multicast VLAN registration 1098MVRP multiple VLAN registration protocol 1099MWE module width encoding 1100MX mail exchange 1101NACK negative acknowledgement 1102NAK negative acknowledgement 1103NAN neighbor awareness networking 1104NAN not a number 1105NAPT Network Address Port Translation 1106NAS network attached storage 1107NAT network address translation 1108NAV network allocation vector 1109NC numerical control 1110NC-SI network controller sideband interface 1111NCO numerically-controlled oscillator 1112NCP Network Control Protocol 1113NCQ native command queuing 1114NCSI network connectivity status indicator 1115ND neighbor discovery 1116NDFA nondeterministic finite automaton 1117NDIS network driver interface specification 1118NE numeric error 1119NEWS Network extensible Window System 1120NFA nondeterministic finite automaton 1121NFC near-field communication 1122NFCI no functional change intended 1123NFS network file system 1124NFV network function virtualization 1125NHACP NABU HCCA Application Communication Protocol 1126NIA next instruction address 1127NIC network information center 1128NIC network interface card 1129NIDS network intrusion detection system 1130NIKE Non-Interactive Key Exchange 1131NIP network interface protocol 1132NIPR non-classified IP router (network) 1133NIPS network intrusion prevention system 1134NIS network information service 1135NIST National Institute of Standards and Technology 1136NLS native language support 1137NMI non-maskable interrupt 1138NMR nonce-misuse resistance 1139NNTP Network News Transfer Protocol 1140NOC network operations center 1141NOP no operation 1142NOS network operating system 1143NP nondeterministic polynomial time 1144NRND not recommended for new designs 1145NRZ non-return to zero 1146NSA National Security Agency 1147NSA nation-state adversary 1148NSA no such agency 1149NTA negative trust anchor 1150NTM non-deterministic Turing machine 1151NTP Network Time Protocol 1152NUMA non-uniform memory access 1153NURBS non-uniform rational basis spline 1154NVD National Vulnerability Database 1155NVMM NetBSD Virtual Machine Monitor 1156NVMM non-volatile main memory 1157NVRAM non-volatile random access memory 1158NW not write-through 1159NX no execute 1160OAEP optimal asymmetric encryption padding 1161OAM operations, administration, and {management,maintenance} 1162OBO off by one 1163OBOE off by one error 1164OCL object constraint language 1165OCR optical character recognition 1166ODBC Open Database Connectivity 1167ODCM on-demand clock modulation 1168ODE offline device environment 1169ODI open data-link interface 1170ODM object data manager 1171ODMR on-demand mail relay 1172ODT on-die termination 1173OEM original equipment manufacturer 1174OFB output feedback 1175OFDM orthogonal frequency division multiplexing 1176OFET organic field-effect transistor 1177OLAP online analytical processing 1178OLE object linking and embedding 1179OLTP online transaction processing 1180ONCE on-{chip,circuit} emulation 1181ONFI open nand flash interface 1182OO OpenOffice 1183OO object oriented 1184OOB out of band 1185OOE out of order execution 1186OOM out of memory 1187OOO OpenOffice.org 1188OOP object oriented programming 1189OOPS object oriented programming systems 1190OOSE object oriented software engineering 1191OPM operations per minute 1192OPS operations per second 1193OQL Object Query Language 1194ORB object request broker 1195ORM object-relational mapping 1196OS operating system 1197OSD object-based storage device 1198OSD open source definition 1199OSF open software foundation 1200OSI Open Source Initiative 1201OSI open systems interconnection 1202OSPF open shortest path first 1203OSPM OS power management 1204OSS open sound system 1205OSS open source software 1206OSVW operating system visible workarounds 1207OTP one time password 1208OTP open telecom platform 1209OU organizational unit 1210OUI organizationally unique identifier 1211OWASP Open Web Application Security Project 1212OWL Web Ontology Language 1213P2P PCI to PCI 1214P2P peer to peer 1215PA phase accumulator 1216PA physical address 1217PAAS platform as a service 1218PAC phase-amplitude converter 1219PAE physical address extension 1220PAGP port aggregation protocol 1221PAL phase alternating line 1222PAL programmable array logic 1223PAM pluggable authentication modules 1224PAM pulse amplitude modulation 1225PAP password authentication protocol 1226PAT page attribute table 1227PAT port address translation 1228PATA parallel ATA 1229PAX portable archive exchange 1230PBE pending break encoding 1231PBE programming by example 1232PBR partition boot record 1233PBX private branch exchange 1234PC personal computer 1235PC program counter 1236PCB Protocol Control Block 1237PCB printed circuit board 1238PCB process control block 1239PCBC propagating cipher block chaining 1240PCC Portable C Compiler 1241PCD page-level cache disable 1242PCE path computation element 1243PCE performance-monitor counter enable 1244PCEP Path Computation Element Protocol 1245PCH platform controller hub 1246PCI peripheral component interconnect 1247PCM phase change memory 1248PCM pulse code modulation 1249PCMCIA Personal Computer Memory Card International Association 1250PCP Port Control Protocol 1251PD public domain 1252PDA personal digital assistant 1253PDA pushdown automaton 1254PDAG propositional directed acyclic graph 1255PDB power distribution board 1256PDF portable document format 1257PDM pulse-duration modulation 1258PDN pull-down network 1259PDP page {descriptor,directory} page 1260PDS product data sheet 1261PDU protocol data unit 1262PE portable executable 1263PE protection enable 1264PE provider edge 1265PEAP Protected EAP 1266PECI platform environment control interface 1267PED PIN Entry Device 1268PEP protocol extension protocol 1269PER packed encoding rules 1270PFS perfect forward secrecy 1271PGAS partitioned global address space 1272PGE page global enable 1273PGO profile guided optimization 1274PGP Pretty Good Privacy 1275PHB PCI host bridge 1276PHP PHP: Hypertext Preprocessor 1277PIC performance instrumentation counters 1278PIC position independent code 1279PIC programmable interrupt controller 1280PICNIC problem in chair, not in computer 1281PID process id 1282PIE position independent executable 1283PIL Priority Interrupt Level 1284PIM personal information manager 1285PIM platform-independent model 1286PIO programmed input/output 1287PIPT physically indexed, physically tagged 1288PIQ prefetch input queue 1289PIR private information retrieval 1290PIT programmable interrupt timer 1291PIV personal identity verification 1292PIX Private Internet eXchange 1293PKCS public-key cryptography standards 1294PKE public key encryption 1295PKI public key infrastructure 1296PLC programmable logic controller 1297PLD programmable logic device 1298PLL phase locked loop 1299PLRU pseudo LRU 1300PLT procedure linkage table 1301PLTM package level thermal management 1302PM power management 1303PM {phase,pulse} modulation 1304PMC performance monitoring counters 1305PME power management event 1306PMEG page map entry group 1307PMI performance monitoring infrastructure 1308PMI platform management interrupt 1309PMIC power management integrated circuit 1310PMIO port-mapped input/output 1311PMT photo-multiplier tube 1312PMU performance monitoring units 1313PMU power management unit 1314PNG portable network graphics 1315PNP plug and play 1316POE power over ethernet 1317POF probability of failure 1318POP Post Office Protocol 1319POP power on password 1320POR plan of record 1321POSIX Portable Operating System Interface [for Unix] 1322POST power on self test 1323POTS plain old telephone system 1324POWER Performance Optimization With Enhanced RISC 1325POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1326PP pair programming 1327PPB PCI [to] PCI bridge 1328PPC Power Performance Computing 1329PPC PowerPC 1330PPI pixels per inch 1331PPM pages per minute 1332PPP Point-to-Point Protocol 1333PPPOA Point-to-Point Protocol over ATM 1334PPPOE Point-to-Point Protocol over Ethernet 1335PPR processor programming reference 1336PPT powerpoint 1337PPT punched paper tape 1338PPU physics processing unit 1339PQC post-quantum cryptography 1340PRAM Parameter RAM 1341PRBS pseudorandom bit sequence 1342PRF pseudorandom function [family] 1343PRG pseudorandom generator 1344PRML partial response, maximum likelihood 1345PRN pseudorandom {noise,number} 1346PRNG pseudorandom number generator 1347PROM programmable read only memory 1348PRP pseudorandom permutation 1349PRU Programmable Realtime Unit 1350PS PostScript 1351PSD power spectral density 1352PSE page size extensions 1353PSK phase shift keying 1354PSK pre-shared key 1355PSTN public switched telephone network 1356PSW program status word 1357PTE page table entry 1358PTLA pseudo top level aggregator 1359PTP page table page 1360PTV perceived target value 1361PU processing unit 1362PUC personal unblocking code 1363PUN physical unit number 1364PV physical volume 1365PVC permanent virtual circuit 1366PVG physical volume group 1367PVI protected-mode virtual interrupt 1368PVRST Per-VLAN rapid spanning tree 1369PVST Per-VLAN Spanning Tree 1370PWM pulse width modulation 1371PXE preboot execution environment 1372QA quality assurance 1373QAM quadrature amplitude modulation 1374QAM quality assurance management 1375QBE query by example 1376QC quality control 1377QCIF quarter common intermediate format 1378QDI quasi delay insensitive 1379QOI quality of implementation 1380QOI quick order interface 1381QOS quality of service 1382QUIC Quick UDP Internet Connections 1383QVL qualified vendor list 1384R/O read only 1385R/W read/write 1386RA receiver address 1387RA remote assistance 1388RA resource affinity 1389RA router advertisement 1390RAD rapid application development 1391RADIUS remote authentication dial-in user service 1392RAID redundant array of {independent,inexpensive} disks 1393RAII resource acquisition is initialization 1394RAM random access memory 1395RAS reliability, availability and serviceability 1396RAS remote access service 1397RAS restartable atomic sequence 1398RAS row address strobe 1399RAT register allocation table 1400RAT remote access trojan 1401RBF radial basis function 1402RBL real-time blackhole list 1403RBL reputation block list 1404RBNF routing backus-naur form 1405RBT red-black tree 1406RC release candidate 1407RC remote control 1408RC run commands 1409RCS Revision Control System 1410RCU read, copy, update 1411RDB Rigid Disk Block 1412RDBMS relational database management system 1413RDF Resource Description Framework 1414RDM relational data model 1415RDMA remote direct memory access 1416RDP remote desktop protocol 1417RDRAM Rambus DRAM 1418RE regular expression 1419REPL read, evaluate, print, loop 1420REST representational state transfer 1421RF radio frequency 1422RFB remote frame buffer 1423RFI radio frequency interference 1424RFO request for ownership 1425RFU reserved for future use 1426RGB red green blue 1427RGBA red green blue alpha 1428RGMII reduced gigabit media independent interface 1429RH read hit 1430RHEL Red Hat Enterprise Linux 1431RHL Red Hat Linux 1432RIB routing information base 1433RIFF Resource Interchange File Format 1434RIP Raster Image Processor 1435RIP Routing Information Protocol 1436RIPR releasable IP router (network) 1437RIR regional Internet registry 1438RISC reduced instruction set {computer,computing} 1439RKM ROM Kernel Manual 1440RLE run length encoding 1441RLL run length limited 1442RLO right-to-left override 1443RM read miss 1444RMCP Remote Management Control Protocol 1445RMI remote method invocation 1446RMO Relaxed Memory Ordering 1447RMPM rapid memory power management 1448RMS root mean square 1449RMW read, modify, write 1450RNG random number generator 1451ROA route origin authorization 1452ROM read only memory 1453ROP return-oriented programming 1454RPC remote procedure call 1455RPG Report Program Generator 1456RPKI resource PKI 1457RPL requested privilege level 1458RPM revolutions per minute 1459RPN reverse Polish notation 1460RPVST Rapid Per-VLAN Spanning Tree 1461RR random replacement 1462RR round robin 1463RS relay station 1464RSA Rivest, Shamir, [and] Adleman 1465RSC Receive Segment Coalescing 1466RSIP Realm Specific IP 1467RSN Robust Secure Network 1468RSS Receive Side Scaling 1469RSS really simple syndication 1470RSS residual sum of squares 1471RSTP Rapid Spanning Tree Protocol 1472RT real time 1473RTC real time clock 1474RTC real time computing 1475RTF rich text format 1476RTL register transfer language 1477RTL resistor-transistor logic 1478RTL right to left 1479RTM restricted transactional memory (Intel) 1480RTOS real time operating system 1481RTP Real-time Transport Protocol 1482RTS request to send 1483RTT round trip time 1484RTTI run-time type information 1485RUP rational unified process 1486RW Rabin-Williams 1487RWM read-write memory 1488RX {receive,receiver} 1489S/PDIF Sony/Philips Digital Interface Format 1490SA security advisory 1491SA security association 1492SA source address 1493SA structured analysis 1494SAAS software as a service 1495SABRE Semi-automated business research environment 1496SACD super audio compact disc 1497SAD security association database 1498SAF-TE SCSI accessed fault-tolerant enclosure 1499SAGE Semi-automated ground environment 1500SAL {service,system} abstraction layer 1501SAM serial access memory 1502SAM sum addressed memory 1503SAML security assertion markup language 1504SAN storage area network 1505SAP service access point 1506SAPIC streamlined advanced programmable interrupt controller 1507SASD structured analysis, structured design 1508SASI Shugart Associates System Interface 1509SASL simple authentication [and] security layer 1510SATA serial advanced technology attachment 1511SAX simple API for XML 1512SB sound blaster 1513SBI supervisor binary interface 1514SBOM Software Bill of Materials 1515SBSA server base system architecture 1516SBU standard build unit 1517SC store conditional 1518SCA source code analyzer 1519SCADA supervisory control and data acquisition 1520SCC single chip cloud 1521SCC source code control 1522SCCP skinny call control protocol 1523SCCS Source Code Control System 1524SCI scalable coherent interface 1525SCI system control interrupt 1526SCIM smart common input method 1527SCM software configuration management 1528SCM source code management 1529SCM storage-class memory 1530SCO synchronous connection orientated 1531SCP secure copy 1532SCP system control processor 1533SCPI system control and power interface 1534SCSI Small Computer System Interface 1535SCT Signed Certificate Timestamp 1536SCTP Stream Control Transmission Protocol 1537SDDC software defined data center 1538SDEI software delegated exception interface 1539SDI symbol deinterleave 1540SDK software development kit 1541SDL Simple Declarative Language 1542SDL Simple Direct-media Layer 1543SDLC {software,system,systems} development life cycle 1544SDN software defined networking 1545SDP Session Description Protocol 1546SDR software defined radio 1547SDRAM synchronous dynamic random access memory 1548SDS software defined storage 1549SDT syntax-directed translation 1550SEA synchronous external abort 1551SED self-encrypting drive 1552SED stream editor 1553SEGV segmentation violation 1554SEMB serial ATA enclosure management bridge 1555SEO search engine optimization 1556SES SCSI enclosure services 1557SFC sequential function chart 1558SFI simple firmware interface 1559SFI software fault isolation 1560SFP small form-factor pluggable 1561SFTP SSH File Transfer Protocol 1562SFTP Serial File Transfer Protocol 1563SFTP Simple File Transfer Protocol 1564SGI Silicon Graphics, Inc 1565SGI software generated interrupt 1566SGMII serial gigabit media independent interface 1567SGPIO serial general purpose input/output 1568SGRAM synchronous graphics random access memory 1569SHA secure hash algorithm 1570SICP structure and interpretation of computer programs 1571SIDH supersingular isogeny Diffie-Hellman 1572SIEM security information and event management 1573SIF source input format 1574SIFS short inter-frame space 1575SIM subscriber identity module 1576SIMD single instruction, multiple data 1577SIMM single inline memory module 1578SIP Session Initiation Protocol 1579SIPR secret IP router (network) 1580SIR signal-to-interference ratio 1581SIR slow infrared 1582SIRT security incident response team 1583SISD single instruction, single data 1584SIV synthetic intialization vector 1585SLAAC stateless address auto-configuration 1586SLC single-level cell 1587SLDRAM synchronous-link dynamic random access memory 1588SLED single large expensive disk 1589SLI scalable link interface 1590SLI scan-line interleave 1591SLIC system license internal code 1592SLOC source lines of code 1593SLRU segmented LRU 1594SMA smart memory access 1595SMAF system management action field 1596SMAP Simple Mail Access Protocol 1597SMAP supervisor mode access prevention 1598SMART self-monitoring analysis and reporting technology 1599SMB Server Message Block 1600SMB system management bus 1601SMBIOS System Management BIOS 1602SMC system management controller 1603SMD storage module device 1604SMEP supervisor mode execution protection 1605SMF single mode fiber 1606SMI structure of management information 1607SMI system management interrupt 1608SMM system management mode 1609SMP serial management protocol 1610SMP symmetric multiprocessing 1611SMR shingled magnetic recording 1612SMR state machine replication 1613SMT simultaneous multithreading 1614SMTP Simple Mail Transfer Protocol 1615SMU system management unit 1616SNA systems network architecture 1617SNAP Sub-Network Access Protocol 1618SNIA Storage Networking Industry Association 1619SNMP Simple Network Management Protocol 1620SNR signal-to-noise ratio 1621SOA service oriented architecture 1622SOAP Simple Object Access Protocol 1623SOC security operations center 1624SOC system on chip 1625SOF start of frame 1626SOH start of header 1627SOHO small office/home office 1628SOL serial over LAN 1629SOM system on module 1630SP service pack 1631SP stack pointer 1632SPA storage pool allocator 1633SPAN switched port analyzer 1634SPARC scalable processor architecture 1635SPARQL SPARQL Protocol and RDF Query Language 1636SPD security policy database 1637SPD serial presence detect 1638SPDIF Sony/Philips digital interface format 1639SPI serial peripheral interface 1640SPI stateful packet inspection 1641SPIR standard portable intermediate representation 1642SPL secondary program loader 1643SPL spinlock 1644SPL system interrupt priority level 1645SPMD single process, multiple data 1646SPR special purpose register 1647SPT sectors per track 1648SQA software quality assurance 1649SQCIF sub quarter common intermediate format 1650SQL Structured Query Language 1651SRAM static random access memory 1652SRC sample rate conversion 1653SRP SCSI RDMA protocol 1654SRR shaped round robin 1655SRTP Secure Real-time Transport Protocol 1656SS self-snoop 1657SS stack segment 1658SSA static single assignment 1659SSAP source service access point 1660SSB single-sideband modulation 1661SSB speculative store bypass 1662SSBB speculative store bypass barrier (Arm) 1663SSBD speculative store bypass disable (Intel) 1664SSC spread spectrum clock 1665SSD solid state drive 1666SSE streaming SIMD extensions 1667SSFDC solid state floppy disc card 1668SSH secure shell 1669SSI server side includes 1670SSID service set identifier 1671SSL secure sockets layer 1672SSP stack smashing protection 1673SSRF server-side request forgery 1674SSTP secure socket tunneling protocol 1675STC software thermal control 1676STD state transition diagram 1677STEK session ticket encryption key 1678STM software transactional memory 1679STOMP Streaming Text Oriented Messaging Protocol 1680STP Spanning Tree Protocol 1681STP shielded twisted pair 1682STRG spanning tree root guard 1683SUN Stanford University Network 1684SUS Single Unix Specification 1685SUT system under test 1686SVC switched virtual circuit 1687SVG scalable vector graphics 1688SVGA Super Video Graphics Array 1689SVI {switch,switched} virtual interface 1690SVM secure virtual machine 1691SVM support vector machine 1692SVR System V Release 1693SVS Separate Virtual Space 1694SWF Shockwave Flash 1695SWIG simplified wrapper [and] interface generator 1696SYR symbol timing recovery 1697TA test assertion 1698TA transmitter address 1699TAA transactional asynchronous abort (Intel) 1700TACACS terminal access controller access-control system 1701TAI international atomic time 1702TAO track at once 1703TAOCP The Art of Computer Programming 1704TAP Test Anything Protocol 1705TAS test and set 1706TB terabyte 1707TBNF transitional backus-naur form 1708TCB trace capture buffer 1709TCB trusted computing base 1710TCC thermal control circuit 1711TCL tool command language 1712TCP Transmission Control Protocol 1713TCQ tagged command queueing 1714TDC time [to] digital converter 1715TDD test-driven development 1716TDD time division duplex 1717TDM time division multiplexing 1718TDMA time division multiple access 1719TDOA time difference of arrival 1720TDP thermal design {point,power} 1721TDR time-domain reflectometry 1722TECO Text Editor and Corrector 1723TEE Trusted Execution Environment 1724TFT thin film transistor 1725TFTP Trivial File Transfer Protocol 1726TIAS try it and see 1727TIFF tagged image file format 1728TITS try it to see 1729TK temporal key 1730TKIP Temporal Key Integrity Protocol 1731TLA top level aggregator 1732TLB translation lookaside buffer 1733TLD top level domain 1734TLER time-limited error recovery 1735TLI transport layer interface 1736TLS thread local storage 1737TLS transport layer security 1738TLV type, length, value 1739TM Turing machine 1740TM thermal monitor 1741TMDS transition minimized differential signaling 1742TMG transmogrifier 1743TMO timeout 1744TOD time of day 1745TOE TCP offload engine 1746TOFU trust on first use 1747TOS terms of service 1748TOS trusted operating system 1749TOS type of service 1750TOTP time-based one time password 1751TP transaction processing 1752TPI tracks per inch 1753TPM transactions per minute 1754TPM trusted platform module 1755TPR task priority register 1756TPS transactions per second 1757TPS transmission parameters signaling 1758TR task register 1759TR token ring 1760TRL timing recovery loop 1761TRNG true random number generator 1762TS terminal services 1763TS time series 1764TS time stamp 1765TS transport stream 1766TSAN Thread Sanitizer 1767TSC time stamp counter 1768TSD time stamp disable 1769TSDB time series database 1770TSL test, set, lock 1771TSO TCP segmentation offload 1772TSO Total Store Ordering 1773TSO time sharing option 1774TSP Time-Stamp Protocol 1775TSP Tunnel Setup Protocol 1776TSP time synchronization protocol 1777TSP traveling salesman problem 1778TSS task state segment 1779TSV tab-separated values 1780TSX transaction synchronization extensions (Intel) 1781TTL time to live 1782TTL transistor-transistor logic 1783TTM translation table maps 1784TTY teletype 1785TU translation unit 1786TUI {terminal,text-based,textual} user interface 1787TX {transmit out,transmitter} 1788TXG transaction group 1789TZ time zone 1790UAC user {access,account} control 1791UAF use-after-free 1792UART universal asynchronous receiver/transmitter 1793UAT user acceptance testing 1794UB undefined behavior 1795UBSAN Undefined Behavior Sanitizer 1796UC uncacheable 1797UCS unified computing system 1798UCS uniform-cost search 1799UCS universal coded character set 1800UDI uniform driver interface 1801UDMA ultra DMA 1802UDO ultra density optical 1803UDP User Datagram Protocol 1804UDS Unix Domain Socket 1805UEFI unified extensible firmware interface 1806UFO UDP fragmentation offload 1807UFS Unix File System 1808UGA universal graphics adapter 1809UI unit interval 1810UI user interface 1811UICC universal integrated circuit card 1812UID unique identifier 1813UID user identifier 1814UL upload 1815UMA uniform memory access 1816UMA upper memory area 1817UMB upper memory block 1818UML unified modeling language 1819UMPC ultra-mobile PC 1820UPNP universal plug and play 1821UPS uninterruptible power supply 1822URI uniform resource identifier 1823URL uniform resource locator 1824URN uniform resource name 1825USART universal synchronous/asynchronous receiver/transmitter 1826USB universal serial bus 1827USWC uncacheable speculative write combining 1828UT unit test 1829UTC coordinated universal time 1830UTF unicode transformation formats 1831UTP unshielded twisted pair 1832UTS UNIX time-sharing 1833UUCP Unix-to-Unix Copy Protocol 1834UUID universally unique identifier 1835UUOC useless use of cat 1836UUT unit under test 1837UX user experience 1838VA vertical alignment 1839VA virtual address 1840VA volt-ampere 1841VAX virtual address extension 1842VB Visual Basic 1843VBR volume boot record 1844VCA variable-gain amplifier 1845VCC common collector voltage 1846VCCP virtual chassis control protocol 1847VCF voltage-controlled filter 1848VCM virtual channel memory 1849VCO voltage-controlled oscillator 1850VCP virtual chassis port 1851VCS version control system 1852VDP vulnerability disclosure policy 1853VDPAU Video Decode and Presentation API for Unix 1854VES virtual execution system 1855VESA Video Electronics Standards Association 1856VFO variable-frequency oscillator 1857VFS virtual file system 1858VG volume group 1859VGA Video Graphics Array 1860VHD virtual hard disk 1861VHDCI very high density cable interconnect 1862VID {VLAN,voltage level} identifier 1863VIM Vi IMproved 1864VIPT virtually indexed, physically tagged 1865VIVT virtually indexed, virtually tagged 1866VLAN virtual local area network 1867VLD variable-length decoding 1868VLIW very long instruction word 1869VLSI very large scale integration 1870VLSM variable length subnet mask 1871VM virtual {machine,memory} 1872VME virtual mode extension 1873VMX vector multimedia extensions 1874VMX virtual machine extensions 1875VNC virtual network computing 1876VNI virtual network identifier 1877VOD video on demand 1878VPD vital product data 1879VPN virtual private network 1880VPWS virtual private wire service 1881VR virtual reality 1882VRAM video random access memory 1883VRF virtual routing and forwarding 1884VRM voltage regulator module 1885VROC Virtual RAID On CPU 1886VRRP Virtual Router Redundancy Protocol 1887VSTP VLAN Spanning Tree Protocol 1888VTEP VXLAN tunnel endpoint 1889VTP VLAN Trunking Protocol 1890VXFS Veritas file system 1891VXLAN virtual extensible LAN 1892VXVM Veritas volume manager 1893W watt 1894W3C World Wide Web Consortium 1895WAFL write anywhere file layout 1896WAMP Web Application Messaging Protocol 1897WAN wide area network 1898WAP Wireless Application Protocol 1899WAP wireless access point 1900WDDM Windows Display Driver Model 1901WDM Wavelength Division Multiplexing 1902WDM Windows Driver Model 1903WDT watchdog timer 1904WEP Wired Equivalent Privacy 1905WFI wait for interrupt 1906WFQ weighted fair queuing 1907WH write hit 1908WHEA Windows hardware error architecture 1909WIFI wireless fidelity 1910WLAN wireless local area network 1911WM write miss 1912WMF Windows meta file 1913WMI Windows Management Instrumentation 1914WOL Wake-on-LAN 1915WOM Wake-on-Modem 1916WOR Wake-on-Ring 1917WORM write once read many 1918WP WordPerfect 1919WP word processor 1920WP write protect 1921WPA Wi-Fi Protected Access 1922WPA2 Wi-Fi Protected Access II 1923WPAD web proxy auto-discovery protocol 1924WPS Wi-Fi Protected Setup 1925WRAM window random access memory 1926WS web services 1927WTC write through caching 1928WTD weighted tail drop 1929WWAN wireless wide area network 1930WWW world wide web 1931WYSIAYG what you see is all you get 1932WYSIWYG what you see is what you get 1933XBAR crossbar 1934XDMCP X Display Manager control protocol 1935XER XML encoding rules 1936XGA Extended Graphics Array 1937XHR XMLHttpRequest 1938XIP execute in place 1939XML Extensible Markup Language 1940XMSS eXtended Merkle Signature Scheme 1941XNA XNA's not acronymed 1942XNS Xerox network systems 1943XOF eXtendable-Output Function 1944XOR exclusive or 1945XP extreme programming 1946XSI X/Open System Interface 1947XSL extensible stylesheet language 1948XSLT extensible stylesheet language transformations 1949XSS cross site scripting 1950XT extended technology 1951XTACACS extended terminal access controller access-control system 1952XTI X/Open transport interface 1953XUL XML user interface language 1954YACC yet another compiler compiler 1955YAML YAML ain't markup language 1956YANG yet another next generation 1957YAWPFAPR you are welcome; please file a problem report 1958YP Yellow Pages 1959YTD year to date 1960ZAP ZFS attribute processor 1961ZBR zone bit recording 1962ZFOD zero-filled on demand 1963ZFS zettabyte file system 1964ZIF zero insertion force 1965ZIFS zero insertion force socket 1966ZIL ZFS intent log 1967ZMA zone multicast address 1968ZOI zero one infinity 1969ZOI zone of influence 1970ZPL ZFS Posix layer 1971ZVOL ZFS Volume 1972