acronyms.comp revision 1.390
1$NetBSD: acronyms.comp,v 1.390 2024/05/19 15:47:38 gutteridge Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABE attribute-based encryption 8ABI application binary interface 9ABNF augmented backus-naur form 10ABR available bit rate 11ABRT automatic bug reporting tool 12AC alternating current 13ACI adjacent channel interferer 14ACID atomicity, consistency, isolation, durability 15ACK Amsterdam compiler kit 16ACK acknowledgement 17ACL access control list 18ACL active current loop 19ACL asynchronous connection less 20ACP auxiliary control {process,program} 21ACPI advanced configuration and power interface 22ACS access control set 23ACU automatic calling unit 24ADB Apple desktop bus 25ADC analog [to] digital converter 26ADD acronym driven development 27ADDDC adaptive double DRAM device correction 28ADO active data objects 29ADP automatic data processing 30ADPCM adaptive differential pulse code modulation 31ADS alternate data stream 32ADSL asymmetric digital subscriber line 33ADT abstract data type 34AEAD authenticated encryption with associated data 35AEDC advanced error detection and correction 36AER advanced error reporting 37AES Advanced Encryption Standard 38AFP Apple Filing Protocol 39AFS Andrew File System 40AGC automatic gain control 41AGP accelerated graphics port 42AI analog input 43AI artificial intelligence 44AL access list 45AL active link 46ALE address latch enable 47ALPN application-layer protocol negotiation 48ALS ambient light sensor 49ALSA advanced Linux sound architecture 50ALU arithmetic and logical unit 51ALUA asymmetric logical unit access 52AM access method 53AM alignment mask 54AM amplitude modulation 55AMD Advanced Micro Devices Inc 56AMDD Agile model-driven development 57AMI alternate mark inversion 58AMP asymmetric multiprocessing 59AMQP advanced message queuing protocol 60AMT active management technology 61AN Arabic number 62ANR application not responding 63ANSI American National Standards Institute 64AO analog output 65AOC add-on card 66AOL Alert-on-LAN 67AOS add or subtract 68AOT ahead of time 69AP access point 70AP application processor 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 536ECL emitter-coupled logic 537ECN explicit congestion notification 538ECP enhanced capability port 539ECS enhanced chip set 540ECS extended configuration space 541EDAC error detection and correction 542EDAT enhanced dynamic acceleration technology 543EDGE explicit data graph execution 544EDID extended display identification data 545EDO extended data out 546EDS electronical data sheet 547EDSAC electronic delay storage automatic calculator 548EDVAC electronic discrete variable automatic computer 549EEE embrace, extend, extinguish 550EEE energy efficient ethernet 551EEPROM electrically erasable programmable read only memory 552EFI extensible firmware interface 553EFL emitter follower logic 554EFM eight to fourteen modulation 555EFS extent file system 556EGA Enhanced Graphics Adapter 557EGP exterior gateway protocol 558EH extension header 559EIDE enhanced IDE 560EINJ error injection table 561EISA extended industry standard architecture 562ELF executable and linking format 563ELS entry level system 564EMACS Editor MACroS 565EMI electro-magnetic interference 566EMP electro-magnetic pulse 567EMR electro-magnetic radiation 568ENIAC electronic numerical integrator and computer 569EOF end of file 570EOI end of interrupt 571EOIS end of interactive support 572EOL end of life 573EOL end of line 574EOT end of transmission 575EPIC explicitly parallel instruction computing 576EPP enhanced parallel port 577EPP extensible provisioning protocol (RFC5730) 578EPRML extended partial response, maximum likelihood 579EPROM erasable programmable read only memory 580EPSS Exploit Prediction Scoring System 581EPT extended page tables 582ERC error recovery control 583ERD emergency recovery disk 584ERD entity relationship diagram 585ERE extended regular expression 586ERST error record serialization table 587ESAN Efficiency Sanitizer 588ESB enterprise service bus 589ESDI enhanced small disk interface 590ESDRAM enhanced synchronous dynamic random access memory 591ESI enclosure services interface 592ESS electronic switching system 593ESS extended service set 594ESSID extended service set identifier 595EST enhanced speedstep 596ETL extract, transform, load 597EU execution unit 598EULA end user license agreement 599EdDSA Edwards curve digital signature algorithm 600FAT file allocation table 601FBRAM frame buffer random access memory 602FCIF full common intermediate format 603FCL fiber channel loop 604FCS frame check sequence 605FDC floppy disk controller 606FDD floppy disk drive 607FDDI fiber distributed data interface 608FDE full disk encryption 609FDT flattened device tree 610FEA finite element analysis 611FEC forward error correction 612FET field-effect transistor 613FF finite field 614FF form feed 615FFDH finite-field Diffie-Hellman 616FFH functional fixed hardware 617FFI foreign function interface 618FFM focus follows mouse 619FFS Fast File System 620FFS find first set 621FFT fast Fourier transform 622FG floating gate 623FHRP first hop redundancy protocol 624FHSS frequency hop spread spectrum 625FID frequency identifier 626FIFO first in, first out 627FILO first in, last out 628FIPS Federal Information Processing Standards 629FIR fast infrared 630FLOPS floating [point] operations per second 631FLOSS free/libre/open source software 632FM frequency modulation 633FMR false match rate 634FOSS free/open source software 635FPGA field programmable gate array 636FPM fast page mode 637FPR floating point register 638FPU floating point unit 639FQDN fully qualified domain name 640FRR false rejection rate 641FRR Free Range Routing 642FRU field replaceable unit 643FS file system 644FSB front side bus 645FSCK file system check 646FSF Free Software Foundation 647FSK frequency shift keying 648FSM finite-state machine 649FTA fault tree analysis 650FTL flash translation layer 651FTP File Transfer Protocol 652FTPS File Transfer Protocol Secure 653FTTH fiber to the home 654FUS fast user switching 655FWH firmware hub 656FWS folding white space 657GAL generic array logic 658GARP generic attribute registration protocol 659GAS generic address structure 660GC garbage collector 661GCC GNU Compiler Collection 662GCM Galois counter mode 663GCR group-coded recording 664GDI Graphics Device Interface 665GDT global descriptor table 666GECOS general comprehensive operating supervisor 667GEM graphics environment manager 668GEM graphics execution manager 669GEMM general matrix multiply 670GENA general event notification architecture 671GHC Glasgow Haskell compiler 672GHES generic hardware error source 673GIC generic interrupt controller 674GID group identifier 675GIF graphics interchange format 676GLBP gateway load balancing protocol 677GMCH graphics and memory controller hub 678GNU GNU's Not Unix 679GOP graphics output protocol 680GOT global offset table 681GPE general purpose event 682GPF general protection fault 683GPG GNU Privacy Guard 684GPL [GNU] General Public License 685GPR general purpose register 686GPS generalized processor sharing 687GPT GUID partition table 688GPU graphics processing unit 689GR golden ratio 690GRE generic routing encapsulation 691GRO generic receive offload 692GSI global system interrupt 693GSO generic send offload 694GUI graphical user interface 695GUID globally unique identifier 696GUS Gravis UltraSound 697GVFS git virtual file system 698HA high availability 699HAL hardware abstraction layer 700HAT hashed array tree 701HATEOAS hypermedia as the engine of application state 702HBA host bus adapter 703HCC Home Cable Computer 704HCCA Home Cable Computer Adaptor 705HCF halt and catch fire 706HCI host controller interface 707HCI human-computer interaction 708HCL hardware compatibility list 709HDCP High-bandwidth Digital Content Protection 710HDD hard disk drive 711HDL hardware description language 712HDMI High-Definition Multimedia Interface 713HDTV high-definition television 714HECI host embedded controller interface 715HEST hardware error source table 716HEVC high efficiency video coding 717HF high frequency 718HFM highest frequency mode 719HFS hierarchical file system 720HID human interface device 721HKDF HMAC-based key derivation function 722HKP HTTP Keyserver Protocol 723HLE hardware lock elision (Intel) 724HLL high-level language 725HMA high memory area 726HMI human-machine interface 727HNDL harvest now, decrypt later 728HOOD hierarchical object oriented design 729HOTP HMAC-based one time password 730HP Hewlett-Packard 731HPC high performance computing 732HPD hot plug detection 733HPET high precision event timer 734HPKE hybrid public key encryption 735HSM hardware security module 736HSM hierarchical storage management 737HSRP hot standby router protocol 738HT hyper-threading 739HTC hardware thermal control 740HTCC high temperature co-fired ceramic 741HTML HyperText Markup Language 742HTT hyper-threading technology 743HTTP Hypertext Transfer Protocol 744HTTPS Hypertext Transfer Protocol Secure 745HVDS High-Voltage Differential Signaling 746HVM hardware virtual machine 747HWASAN Hardware-assisted Address Sanitizer 748HZ Hertz 749I2O intelligent input/output 750IA information assurance 751IAAS infrastructure as a service 752IAB Internet Architecture Board 753IANA Internet Assigned Numbers Authority 754IBC iterated block cipher 755IBM International Business Machines 756IBPI international blinking pattern interpretation 757IBS instruction based sampling 758IBSS independent basic service set 759IBT indirect branch tracking 760IC integrated circuit 761ICA independent computer architecture 762ICACLS integrity control access control lists 763ICB Internet Citizen's Band 764ICE in-circuit emulator 765ICE internal compiler error 766ICH I/O controller hub 767ICMP Internet Control Message Protocol 768ICT information and communications technology 769ICW initialization command word 770IDA Intel dynamic acceleration 771IDCMP Intuition direct communication message port 772IDCT inverse discrete cosine transform 773IDE integrated development environment 774IDE integrated drive electronics 775IDPS intrusion detection [and] prevention system 776IDRP inter-domain routing protocol 777IDS intrusion detection system 778IDT interrupt descriptor table 779IE Internet Explorer 780IEC International Electrotechnical Commission 781IEEE Institute of Electrical and Electronics Engineers 782IESG Internet Engineering Steering Group 783IETF Internet Engineering Task Force 784IF intermediate frequency 785IFCM isochronous flow control mode 786IFF Interchange File Format 787IFS internal field separator 788IGD Internet gateway device 789IGMP Internet Group Management Protocol 790IGP interior gateway protocol 791IHV independent hardware vendor 792IKE Internet key exchange 793IKM input keying material 794ILM internal loopback mode 795ILOM integrated lights-out management 796ILP instruction level parallelism 797IM instant messaging 798IMAP Internet Message Access Protocol 799IMC integrated memory controller 800IMCR interrupt mode configuration register 801IME input method editor 802IMR interrupt mask register 803IMS information management system 804IMSI international mobile subscriber identity 805INCITS InterNational Committee for Information Technology Standards 806INODE index node 807IO input/output 808IOCTL input/output control 809IOM input/output managers 810IOMMU input/output memory management unit 811IOT Internet of Things 812IP Internet Protocol 813IP intellectual property 814IPC instructions per cycle 815IPC interprocess communication 816IPCF interprocess communication facility 817IPE integrated programming environment 818IPI intelligent peripheral interface 819IPI interprocessor interrupt 820IPL Initial Program Load 821IPL Interrupt Priority Level 822IPMB Intelligent Platform Management Bus 823IPMI Intelligent Platform Management Interface 824IPNG Internet Protocol, Next Generation 825IPS in-plane switching 826IPS intrusion prevention system 827IPSEC Internet Protocol Security 828IR intermediate representation 829IRC Internet Relay Chat 830IRDA infrared data association 831IRDP ICMP Router Discovery Protocol 832IRQ interrupt request 833IRQL interrupt request level 834IRR interrupt request register 835IRTF Internet Research Task Force 836IS information system 837ISA industry standard architecture 838ISA instruction set architecture 839ISB instruction synchronization barrier (Arm) 840ISDN integrated services digital network 841ISE instant secure erase 842ISI inter-symbol interference 843ISL initial system load 844ISM industrial, scientific, [and] medical 845ISMS information system management system 846ISN initial serial number 847ISO International Standards Organization 848ISOC Internet Society 849ISP Internet service provider 850ISR in-service register 851ISR interrupt service routine 852IST internal spanning tree 853IST interrupt stack table 854ISV independent software vendor 855IT information technology 856ITB Intel Turbo Boost 857ITIL information technology infrastructure library 858ITP in-target probe 859ITSM IT service management 860IV initialization vector 861IVT interrupt vector table 862JBOD just a bunch of disks 863JCL Job Control Language 864JFET junction [gate] field-effect transistor 865JIT just in time 866JPEG Joint Photographic Experts Group 867JRE Java Runtime Environment 868JSON JavaScript Object Notation 869JTAG joint test action group 870KASAN Kernel Address Sanitizer 871KASLR kernel address space layout randomization 872KB keyboard 873KB kilobyte 874KBD keyboard 875KBD kilobaud 876KCS keyboard controller style 877KEK key encryption key 878KEM key encapsulation mechanism 879KLOC thousand lines of code 880KMS kernel-mode setting 881KPI kernel programming interface 882KVA kernel virtual address 883KVM kernel virtual machine 884KVM kernel virtual memory 885KVM keyboard, video, [and] mouse 886L2CAP link layer control and adaptation protocol 887LAG link aggregation group 888LAMP Linux Apache MySQL {Perl,PHP,Python} 889LAN local area network 890LAPIC local advanced programmable interrupt controller 891LAR load access rights 892LBA logical block addressing 893LBNF labeled backus-naur form 894LBS location-based service 895LCD liquid crystal display 896LCP link control protocol 897LDA local delivery agent 898LDAP Lightweight Directory Access Protocol 899LDR light-dependent resistor 900LDT local descriptor table 901LE logical extent 902LED light emitting diode 903LELL low energy link layer 904LER label edge router 905LF line feed 906LF low frequency 907LFM lowest frequency mode 908LFN long file names 909LFO low-frequency oscillation 910LFS log-structured file system 911LFU least frequently used 912LHP loop heat pipe 913LIF logical interchange format 914LIFO last in, first out 915LILO LInux LOader 916LILO last in, last out 917LINT local interrupt 918LIR local Internet registry 919LISP LISt Processor 920LISP Locator/ID Separation Protocol 921LKM {Linux,loadable} kernel module 922LKML Linux kernel mailing list 923LL load linked 924LL/SC load linked/store conditional 925LLC logical link control 926LLD low-level design 927LLDD low-level design document 928LLDP link layer discovery protocol 929LLF low level format 930LLMNR link-local multicast name resolution 931LLVM Low Level Virtual Machine 932LM long mode 933LMCE local machine check exception 934LMI local management interface 935LMM link management mode 936LMP link management protocol 937LNO loop nest optimization 938LOC lines of code 939LOM lights-out management 940LPC low pin count 941LPE Linux performance events 942LPS local positioning system 943LRC longitudinal redundancy check 944LRM left-to-right mark 945LRO Large Receive Offload 946LRO left-to-right override 947LRU least recently used 948LS link state 949LSAN Leak Sanitizer 950LSB Linux standards base 951LSB least significant {bit,byte} 952LSI large scale integration 953LSL load segment limit 954LSM log structured merge 955LSN Large Scale NAT 956LSN log sequence number 957LSO large send offload 958LSR label switch router 959LTCC low temperature co-fired ceramic 960LTO linear tape-open 961LTO link time optimization 962LTR left to right 963LTR letter(-sized paper) 964LTR load task register 965LTS long term support 966LUA Lua Uppercase Accident 967LUN logical unit number 968LV logical volume 969LVDS Low-Voltage Differential Signaling 970LVM logical volume management 971LVT local vector table 972LWP light-weight process 973LZSS Lempel Ziv Storer Szymanski 974LZW Lempel Ziv Welch 975MAB MAC authentication bypass 976MAC mandatory access control 977MAC message authentication {check,code} 978MAC {media,medium} access control 979MADT multiple APIC descriptor table 980MAMR microwave-assisted magnetic recording 981MB megabyte 982MBA multi-boot agent 983MBR master boot record 984MBS megabits per second 985MC memory controller 986MCA MicroChannel architecture 987MCA machine check architecture 988MCC multiversion concurrency control 989MCE machine check exception 990MCGA Multi-Color Graphics Array 991MCH memory controller hub 992MCLAG multi-chassis link aggregation group 993MCM multi-chip module 994MCQ memory controlled queue 995MD MiniDisc 996MD machine-dependent 997MD-SAL model-driven service abstraction layer 998MDA Monochrome Display Adapter 999MDA mail delivery agent 1000MDC Management Data Clock 1001MDI Medium Dependent Interface 1002MDI-X Medium Dependent Interface Crossover 1003MDIO Management Data Input/Output 1004MDMX MIPS Digital Media eXtension 1005MDRAM multibank dynamic random access memory 1006MDS microarchitectural data sampling 1007MESI modified, exclusive, shared, invalid 1008MFC Microsoft Foundation Classes 1009MFC merge from current 1010MFM modified frequency modulation 1011MFU most frequently used 1012MGCP media gateway control protocol 1013MHU message handling unit 1014MI machine interface 1015MI machine-independent 1016MIB management information base 1017MIC message integrity {check,code} 1018MID mobile Internet device 1019MIDI musical instrument digital interface 1020MIF management information format 1021MII media independent interface 1022MIM man in the middle 1023MIMD multiple instruction, multiple data 1024MIME Multipurpose Internet Mail Extensions 1025MIMO multiple input multiple output 1026MIPS Microprocessor without Interlocked Pipeline Stages 1027MIPS million instructions per second 1028MISD multiple instruction, single data 1029MIT Massachusetts Institute of Technology 1030MITM man in the middle 1031ML machine language 1032ML machine learning 1033ML mailing list 1034ML markup language 1035ML maximum likelihood 1036ML-KEM module-lattice based key-encapsulation mechanism 1037MLAG multi-chassis link aggregation group 1038MLC multi-level cell 1039MLD multicast listener discovery 1040MLHP micro loop heat pipe 1041MLIR multi-level intermediate representation 1042MLO MMC loader 1043MMC multi-media card 1044MMF multi-mode fiber 1045MMIC monolithic microwave integrated circuit 1046MMIO memory mapped input/output 1047MMORPG massive multiplayer online role playing game 1048MMRP multiple MAC registration protocol 1049MMU memory management unit 1050MMX matrix math extension 1051MMX multimedia extension 1052MMX multiple math extension 1053MO magneto-optical 1054MOESI modified, owned, exclusive, shared, invalid 1055MOF maximum operating frequency 1056MOSFET metal-oxide-semiconductor field-effect transistor 1057MOSI modified, owned, shared, invalid 1058MP multi-platform 1059MP multiplayer 1060MP {multiprocessing,multiprocessor} 1061MPEG moving picture experts group 1062MPI message passing interface 1063MPLS Multiprotocol Label Switching 1064MPP massively parallel processor 1065MPS memory pool system 1066MPS multiprocessor specification 1067MQTT Message Queuing Telemetry Transport 1068MR modem ready 1069MRO method resolution order 1070MRP multiple registration protocol 1071MRU most recently used 1072MS Microsoft 1073MSAN Memory Sanitizer 1074MSB most significant {bit,byte} 1075MSC message sequence chart 1076MSE mean square error 1077MSF minutes seconds frames 1078MSI message signaled interrupt 1079MSI modified, shared, invalid 1080MSR {machine state,model-specific} register 1081MSS maximum segment size 1082MSTP Multiple Spanning Tree Protocol 1083MT machine translation 1084MTA mail transfer agent 1085MTBF mean time between failures 1086MTP media transfer protocol 1087MTRR memory type range register 1088MTTF mean time to failure 1089MTU maximum transmission unit 1090MUA mail user agent 1091MUD multi-user domain 1092MVCC multiversion concurrency control 1093MVR multicast VLAN registration 1094MVRP multiple VLAN registration protocol 1095MWE module width encoding 1096MX mail exchange 1097NACK negative acknowledgement 1098NAK negative acknowledgement 1099NAN neighbor awareness networking 1100NAN not a number 1101NAPT Network Address Port Translation 1102NAS network attached storage 1103NAT network address translation 1104NAV network allocation vector 1105NC numerical control 1106NC-SI network controller sideband interface 1107NCO numerically-controlled oscillator 1108NCP Network Control Protocol 1109NCQ native command queuing 1110NCSI network connectivity status indicator 1111ND neighbor discovery 1112NDFA nondeterministic finite automaton 1113NDIS network driver interface specification 1114NE numeric error 1115NEWS Network extensible Window System 1116NFA nondeterministic finite automaton 1117NFC near-field communication 1118NFCI no functional change intended 1119NFS network file system 1120NFV network function virtualization 1121NHACP NABU HCCA Application Communication Protocol 1122NIA next instruction address 1123NIC network information center 1124NIC network interface card 1125NIDS network intrusion detection system 1126NIP network interface protocol 1127NIPR non-classified IP router (network) 1128NIPS network intrusion prevention system 1129NIS network information service 1130NIST National Institute of Standards and Technology 1131NLS native language support 1132NMI non-maskable interrupt 1133NMR nonce-misuse resistance 1134NNTP Network News Transfer Protocol 1135NOC network operations center 1136NOP no operation 1137NOS network operating system 1138NP nondeterministic polynomial time 1139NRND not recommended for new designs 1140NRZ non-return to zero 1141NSA National Security Agency 1142NSA nation-state adversary 1143NSA no such agency 1144NTA negative trust anchor 1145NTM non-deterministic Turing machine 1146NTP Network Time Protocol 1147NUMA non-uniform memory access 1148NURBS non-uniform rational basis spline 1149NVD National Vulnerability Database 1150NVMM NetBSD Virtual Machine Monitor 1151NVMM non-volatile main memory 1152NVRAM non-volatile random access memory 1153NW not write-through 1154NX no execute 1155OAEP optimal asymmetric encryption padding 1156OAM operations, administration, and {management,maintenance} 1157OBO off by one 1158OBOE off by one error 1159OCL object constraint language 1160OCR optical character recognition 1161ODBC Open Database Connectivity 1162ODCM on-demand clock modulation 1163ODE offline device environment 1164ODI open data-link interface 1165ODM object data manager 1166ODMR on-demand mail relay 1167ODT on-die termination 1168OEM original equipment manufacturer 1169OFB output feedback 1170OFDM orthogonal frequency division multiplexing 1171OFET organic field-effect transistor 1172OLAP online analytical processing 1173OLE object linking and embedding 1174OLTP online transaction processing 1175ONCE on-{chip,circuit} emulation 1176ONFI open nand flash interface 1177OO OpenOffice 1178OO object oriented 1179OOB out of band 1180OOE out of order execution 1181OOM out of memory 1182OOO OpenOffice.org 1183OOP object oriented programming 1184OOPS object oriented programming systems 1185OOSE object oriented software engineering 1186OPM operations per minute 1187OPS operations per second 1188OQL Object Query Language 1189ORB object request broker 1190ORM object-relational mapping 1191OS operating system 1192OSD object-based storage device 1193OSD open source definition 1194OSF open software foundation 1195OSI Open Source Initiative 1196OSI open systems interconnection 1197OSPF open shortest path first 1198OSPM OS power management 1199OSS open sound system 1200OSS open source software 1201OSVW operating system visible workarounds 1202OTP one time password 1203OTP open telecom platform 1204OU organizational unit 1205OUI organizationally unique identifier 1206OWASP Open Web Application Security Project 1207OWL Web Ontology Language 1208P2P PCI to PCI 1209P2P peer to peer 1210PA phase accumulator 1211PA physical address 1212PAAS platform as a service 1213PAC phase-amplitude converter 1214PAE physical address extension 1215PAGP port aggregation protocol 1216PAL phase alternating line 1217PAL programmable array logic 1218PAM pluggable authentication modules 1219PAM pulse amplitude modulation 1220PAP password authentication protocol 1221PAT page attribute table 1222PAT port address translation 1223PATA parallel ATA 1224PAX portable archive exchange 1225PBE pending break encoding 1226PBE programming by example 1227PBR partition boot record 1228PBX private branch exchange 1229PC personal computer 1230PC program counter 1231PCB Protocol Control Block 1232PCB printed circuit board 1233PCB process control block 1234PCBC propagating cipher block chaining 1235PCC Portable C Compiler 1236PCD page-level cache disable 1237PCE path computation element 1238PCE performance-monitor counter enable 1239PCEP Path Computation Element Protocol 1240PCH platform controller hub 1241PCI peripheral component interconnect 1242PCM phase change memory 1243PCM pulse code modulation 1244PCMCIA Personal Computer Memory Card International Association 1245PCP Port Control Protocol 1246PD public domain 1247PDA personal digital assistant 1248PDA pushdown automaton 1249PDAG propositional directed acyclic graph 1250PDB power distribution board 1251PDF portable document format 1252PDM pulse-duration modulation 1253PDN pull-down network 1254PDP page {descriptor,directory} page 1255PDS product data sheet 1256PDU protocol data unit 1257PE portable executable 1258PE protection enable 1259PE provider edge 1260PEAP Protected EAP 1261PECI platform environment control interface 1262PED PIN Entry Device 1263PEP protocol extension protocol 1264PER packed encoding rules 1265PFS perfect forward secrecy 1266PGAS partitioned global address space 1267PGE page global enable 1268PGO profile guided optimization 1269PGP Pretty Good Privacy 1270PHB PCI host bridge 1271PHP PHP: Hypertext Preprocessor 1272PIC performance instrumentation counters 1273PIC position independent code 1274PIC programmable interrupt controller 1275PICNIC problem in chair, not in computer 1276PID process id 1277PIE position independent executable 1278PIL Priority Interrupt Level 1279PIM personal information manager 1280PIM platform-independent model 1281PIO programmed input/output 1282PIPT physically indexed, physically tagged 1283PIQ prefetch input queue 1284PIR private information retrieval 1285PIT programmable interrupt timer 1286PIV personal identity verification 1287PIX Private Internet eXchange 1288PKCS public-key cryptography standards 1289PKE public key encryption 1290PKI public key infrastructure 1291PLC programmable logic controller 1292PLD programmable logic device 1293PLL phase locked loop 1294PLRU pseudo LRU 1295PLT procedure linkage table 1296PLTM package level thermal management 1297PM power management 1298PM {phase,pulse} modulation 1299PMC performance monitoring counters 1300PME power management event 1301PMEG page map entry group 1302PMI performance monitoring infrastructure 1303PMI platform management interrupt 1304PMIC power management integrated circuit 1305PMIO port-mapped input/output 1306PMT photo-multiplier tube 1307PMU performance monitoring units 1308PMU power management unit 1309PNG portable network graphics 1310PNP plug and play 1311POE power over ethernet 1312POF probability of failure 1313POP Post Office Protocol 1314POP power on password 1315POR plan of record 1316POSIX Portable Operating System Interface [for Unix] 1317POST power on self test 1318POTS plain old telephone system 1319POWER Performance Optimization With Enhanced RISC 1320POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1321PP pair programming 1322PPB PCI [to] PCI bridge 1323PPC Power Performance Computing 1324PPC PowerPC 1325PPI pixels per inch 1326PPM pages per minute 1327PPP Point-to-Point Protocol 1328PPPOA Point-to-Point Protocol over ATM 1329PPPOE Point-to-Point Protocol over Ethernet 1330PPR processor programming reference 1331PPT powerpoint 1332PPT punched paper tape 1333PPU physics processing unit 1334PQC post-quantum cryptography 1335PRAM Parameter RAM 1336PRBS pseudorandom bit sequence 1337PRF pseudorandom function [family] 1338PRG pseudorandom generator 1339PRML partial response, maximum likelihood 1340PRN pseudorandom {noise,number} 1341PRNG pseudorandom number generator 1342PROM programmable read only memory 1343PRP pseudorandom permutation 1344PRU Programmable Realtime Unit 1345PS PostScript 1346PSD power spectral density 1347PSE page size extensions 1348PSK phase shift keying 1349PSK pre-shared key 1350PSTN public switched telephone network 1351PSW program status word 1352PTE page table entry 1353PTLA pseudo top level aggregator 1354PTP page table page 1355PTV perceived target value 1356PU processing unit 1357PUC personal unblocking code 1358PUN physical unit number 1359PV physical volume 1360PVC permanent virtual circuit 1361PVG physical volume group 1362PVI protected-mode virtual interrupt 1363PVRST Per-VLAN rapid spanning tree 1364PVST Per-VLAN Spanning Tree 1365PWM pulse width modulation 1366PXE preboot execution environment 1367QA quality assurance 1368QAM quadrature amplitude modulation 1369QAM quality assurance management 1370QBE query by example 1371QC quality control 1372QCIF quarter common intermediate format 1373QDI quasi delay insensitive 1374QOI quality of implementation 1375QOI quick order interface 1376QOS quality of service 1377QUIC Quick UDP Internet Connections 1378QVL qualified vendor list 1379R/O read only 1380R/W read/write 1381RA receiver address 1382RA remote assistance 1383RA resource affinity 1384RA router advertisement 1385RAD rapid application development 1386RADIUS remote authentication dial-in user service 1387RAID redundant array of {independent,inexpensive} disks 1388RAII resource acquisition is initialization 1389RAM random access memory 1390RAS reliability, availability and serviceability 1391RAS remote access service 1392RAS restartable atomic sequence 1393RAS row address strobe 1394RAT register allocation table 1395RAT remote access trojan 1396RBF radial basis function 1397RBL real-time blackhole list 1398RBL reputation block list 1399RBNF routing backus-naur form 1400RBT red-black tree 1401RC release candidate 1402RC remote control 1403RC run commands 1404RCS Revision Control System 1405RCU read, copy, update 1406RDB Rigid Disk Block 1407RDBMS relational database management system 1408RDF Resource Description Framework 1409RDM relational data model 1410RDMA remote direct memory access 1411RDP remote desktop protocol 1412RDRAM Rambus DRAM 1413RE regular expression 1414REPL read, evaluate, print, loop 1415REST representational state transfer 1416RF radio frequency 1417RFB remote frame buffer 1418RFI radio frequency interference 1419RFO request for ownership 1420RFU reserved for future use 1421RGB red green blue 1422RGBA red green blue alpha 1423RGMII reduced gigabit media independent interface 1424RH read hit 1425RHEL Red Hat Enterprise Linux 1426RHL Red Hat Linux 1427RIB routing information base 1428RIFF Resource Interchange File Format 1429RIP Raster Image Processor 1430RIP Routing Information Protocol 1431RIPR releasable IP router (network) 1432RIR regional Internet registry 1433RISC reduced instruction set {computer,computing} 1434RKM ROM Kernel Manual 1435RLE run length encoding 1436RLL run length limited 1437RLO right-to-left override 1438RM read miss 1439RMCP Remote Management Control Protocol 1440RMI remote method invocation 1441RMO Relaxed Memory Ordering 1442RMPM rapid memory power management 1443RMS root mean square 1444RMW read, modify, write 1445RNG random number generator 1446ROA route origin authorization 1447ROM read only memory 1448ROP return-oriented programming 1449RPC remote procedure call 1450RPG Report Program Generator 1451RPKI resource PKI 1452RPL requested privilege level 1453RPM revolutions per minute 1454RPN reverse Polish notation 1455RPVST Rapid Per-VLAN Spanning Tree 1456RR random replacement 1457RR round robin 1458RS relay station 1459RSA Rivest, Shamir, [and] Adleman 1460RSC Receive Segment Coalescing 1461RSIP Realm Specific IP 1462RSN Robust Secure Network 1463RSS Receive Side Scaling 1464RSS really simple syndication 1465RSS residual sum of squares 1466RSTP Rapid Spanning Tree Protocol 1467RT real time 1468RTC real time clock 1469RTC real time computing 1470RTF rich text format 1471RTL register transfer language 1472RTL resistor-transistor logic 1473RTL right to left 1474RTM restricted transactional memory (Intel) 1475RTOS real time operating system 1476RTP Real-time Transport Protocol 1477RTS request to send 1478RTT round trip time 1479RTTI run-time type information 1480RUP rational unified process 1481RW Rabin-Williams 1482RWM read-write memory 1483RX {receive,receiver} 1484S/PDIF Sony/Philips Digital Interface Format 1485SA security advisory 1486SA security association 1487SA source address 1488SA structured analysis 1489SAAS software as a service 1490SABRE Semi-automated business research environment 1491SACD super audio compact disc 1492SAD security association database 1493SAF-TE SCSI accessed fault-tolerant enclosure 1494SAGE Semi-automated ground environment 1495SAL {service,system} abstraction layer 1496SAM serial access memory 1497SAM sum addressed memory 1498SAML security assertion markup language 1499SAN storage area network 1500SAP service access point 1501SAPIC streamlined advanced programmable interrupt controller 1502SASD structured analysis, structured design 1503SASI Shugart Associates System Interface 1504SASL simple authentication [and] security layer 1505SATA serial advanced technology attachment 1506SAX simple API for XML 1507SB sound blaster 1508SBI supervisor binary interface 1509SBSA server base system architecture 1510SBU standard build unit 1511SC store conditional 1512SCA source code analyzer 1513SCADA supervisory control and data acquisition 1514SCC single chip cloud 1515SCC source code control 1516SCCP skinny call control protocol 1517SCCS Source Code Control System 1518SCI scalable coherent interface 1519SCI system control interrupt 1520SCIM smart common input method 1521SCM software configuration management 1522SCM source code management 1523SCM storage-class memory 1524SCO synchronous connection orientated 1525SCP secure copy 1526SCP system control processor 1527SCPI system control and power interface 1528SCSI Small Computer System Interface 1529SCTP Stream Control Transmission Protocol 1530SDDC software defined data center 1531SDEI software delegated exception interface 1532SDI symbol deinterleave 1533SDK software development kit 1534SDL Simple Declarative Language 1535SDL Simple Direct-media Layer 1536SDLC {software,system,systems} development life cycle 1537SDN software defined networking 1538SDP Session Description Protocol 1539SDR software defined radio 1540SDRAM synchronous dynamic random access memory 1541SDS software defined storage 1542SDT syntax-directed translation 1543SEA synchronous external abort 1544SED self-encrypting drive 1545SED stream editor 1546SEGV segmentation violation 1547SEMB serial ATA enclosure management bridge 1548SEO search engine optimization 1549SES SCSI enclosure services 1550SFC sequential function chart 1551SFI simple firmware interface 1552SFI software fault isolation 1553SFP small form-factor pluggable 1554SFTP SSH File Transfer Protocol 1555SFTP Serial File Transfer Protocol 1556SFTP Simple File Transfer Protocol 1557SGI Silicon Graphics, Inc 1558SGI software generated interrupt 1559SGMII serial gigabit media independent interface 1560SGPIO serial general purpose input/output 1561SGRAM synchronous graphics random access memory 1562SHA secure hash algorithm 1563SICP structure and interpretation of computer programs 1564SIDH supersingular isogeny Diffie-Hellman 1565SIEM security information and event management 1566SIF source input format 1567SIFS short inter-frame space 1568SIM subscriber identity module 1569SIMD single instruction, multiple data 1570SIMM single inline memory module 1571SIP Session Initiation Protocol 1572SIPR secret IP router (network) 1573SIR signal-to-interference ratio 1574SIR slow infrared 1575SIRT security incident response team 1576SISD single instruction, single data 1577SIV synthetic intialization vector 1578SLAAC stateless address auto-configuration 1579SLC single-level cell 1580SLDRAM synchronous-link dynamic random access memory 1581SLED single large expensive disk 1582SLI scalable link interface 1583SLI scan-line interleave 1584SLIC system license internal code 1585SLOC source lines of code 1586SLRU segmented LRU 1587SMA smart memory access 1588SMAF system management action field 1589SMAP Simple Mail Access Protocol 1590SMAP supervisor mode access prevention 1591SMART self-monitoring analysis and reporting technology 1592SMB Server Message Block 1593SMB system management bus 1594SMBIOS System Management BIOS 1595SMC system management controller 1596SMD storage module device 1597SMEP supervisor mode execution protection 1598SMF single mode fiber 1599SMI structure of management information 1600SMI system management interrupt 1601SMM system management mode 1602SMP serial management protocol 1603SMP symmetric multiprocessing 1604SMR shingled magnetic recording 1605SMR state machine replication 1606SMT simultaneous multithreading 1607SMTP Simple Mail Transfer Protocol 1608SMU system management unit 1609SNA systems network architecture 1610SNAP Sub-Network Access Protocol 1611SNIA Storage Networking Industry Association 1612SNMP Simple Network Management Protocol 1613SNR signal-to-noise ratio 1614SOA service oriented architecture 1615SOAP Simple Object Access Protocol 1616SOC security operations center 1617SOC system on chip 1618SOF start of frame 1619SOH start of header 1620SOHO small office/home office 1621SOL serial over LAN 1622SOM system on module 1623SP service pack 1624SP stack pointer 1625SPA storage pool allocator 1626SPAN switched port analyzer 1627SPARC scalable processor architecture 1628SPARQL SPARQL Protocol and RDF Query Language 1629SPD security policy database 1630SPD serial presence detect 1631SPDIF Sony/Philips digital interface format 1632SPI serial peripheral interface 1633SPI stateful packet inspection 1634SPIR standard portable intermediate representation 1635SPL secondary program loader 1636SPL spinlock 1637SPL system interrupt priority level 1638SPMD single process, multiple data 1639SPR special purpose register 1640SPT sectors per track 1641SQA software quality assurance 1642SQCIF sub quarter common intermediate format 1643SQL Structured Query Language 1644SRAM static random access memory 1645SRC sample rate conversion 1646SRP SCSI RDMA protocol 1647SRR shaped round robin 1648SRTP Secure Real-time Transport Protocol 1649SS self-snoop 1650SS stack segment 1651SSA static single assignment 1652SSAP source service access point 1653SSB single-sideband modulation 1654SSB speculative store bypass 1655SSBB speculative store bypass barrier (Arm) 1656SSBD speculative store bypass disable (Intel) 1657SSC spread spectrum clock 1658SSD solid state drive 1659SSE streaming SIMD extensions 1660SSFDC solid state floppy disc card 1661SSH secure shell 1662SSI server side includes 1663SSID service set identifier 1664SSL secure sockets layer 1665SSP stack smashing protection 1666SSRF server-side request forgery 1667SSTP secure socket tunneling protocol 1668STC software thermal control 1669STD state transition diagram 1670STEK session ticket encryption key 1671STM software transactional memory 1672STOMP Streaming Text Oriented Messaging Protocol 1673STP Spanning Tree Protocol 1674STP shielded twisted pair 1675STRG spanning tree root guard 1676SUN Stanford University Network 1677SUS Single Unix Specification 1678SUT system under test 1679SVC switched virtual circuit 1680SVG scalable vector graphics 1681SVGA Super Video Graphics Array 1682SVI {switch,switched} virtual interface 1683SVM secure virtual machine 1684SVM support vector machine 1685SVR System V Release 1686SVS Separate Virtual Space 1687SWF Shockwave Flash 1688SWIG simplified wrapper [and] interface generator 1689SYR symbol timing recovery 1690TA test assertion 1691TA transmitter address 1692TAA transactional asynchronous abort (Intel) 1693TACACS terminal access controller access-control system 1694TAI international atomic time 1695TAO track at once 1696TAOCP The Art of Computer Programming 1697TAP Test Anything Protocol 1698TAS test and set 1699TB terabyte 1700TBNF transitional backus-naur form 1701TCB trace capture buffer 1702TCB trusted computing base 1703TCC thermal control circuit 1704TCL tool command language 1705TCP Transmission Control Protocol 1706TCQ tagged command queueing 1707TDC time [to] digital converter 1708TDD test-driven development 1709TDD time division duplex 1710TDM time division multiplexing 1711TDMA time division multiple access 1712TDOA time difference of arrival 1713TDP thermal design {point,power} 1714TDR time-domain reflectometry 1715TECO Text Editor and Corrector 1716TEE Trusted Execution Environment 1717TFT thin film transistor 1718TFTP Trivial File Transfer Protocol 1719TIAS try it and see 1720TIFF tagged image file format 1721TITS try it to see 1722TK temporal key 1723TKIP Temporal Key Integrity Protocol 1724TLA top level aggregator 1725TLB translation lookaside buffer 1726TLD top level domain 1727TLER time-limited error recovery 1728TLI transport layer interface 1729TLS thread local storage 1730TLS transport layer security 1731TM Turing machine 1732TM thermal monitor 1733TMDS transition minimized differential signaling 1734TMG transmogrifier 1735TMO timeout 1736TOD time of day 1737TOE TCP offload engine 1738TOFU trust on first use 1739TOS terms of service 1740TOS trusted operating system 1741TOS type of service 1742TOTP time-based one time password 1743TP transaction processing 1744TPI tracks per inch 1745TPM transactions per minute 1746TPM trusted platform module 1747TPR task priority register 1748TPS transactions per second 1749TPS transmission parameters signaling 1750TR task register 1751TR token ring 1752TRL timing recovery loop 1753TRNG true random number generator 1754TS terminal services 1755TS time series 1756TS time stamp 1757TS transport stream 1758TSAN Thread Sanitizer 1759TSC time stamp counter 1760TSD time stamp disable 1761TSDB time series database 1762TSL test, set, lock 1763TSO TCP segmentation offload 1764TSO Total Store Ordering 1765TSO time sharing option 1766TSP Time-Stamp Protocol 1767TSP Tunnel Setup Protocol 1768TSP time synchronization protocol 1769TSP traveling salesman problem 1770TSS task state segment 1771TSV tab-separated values 1772TSX transaction synchronization extensions (Intel) 1773TTL time to live 1774TTL transistor-transistor logic 1775TTM translation table maps 1776TTY teletype 1777TU translation unit 1778TUI {terminal,text-based,textual} user interface 1779TX {transmit out,transmitter} 1780TXG transaction group 1781TZ time zone 1782UAC user {access,account} control 1783UAF use-after-free 1784UART universal asynchronous receiver/transmitter 1785UAT user acceptance testing 1786UB undefined behavior 1787UBSAN Undefined Behavior Sanitizer 1788UC uncacheable 1789UCS unified computing system 1790UCS uniform-cost search 1791UCS universal coded character set 1792UDI uniform driver interface 1793UDMA ultra DMA 1794UDO ultra density optical 1795UDP User Datagram Protocol 1796UDS Unix Domain Socket 1797UEFI unified extensible firmware interface 1798UFO UDP fragmentation offload 1799UFS Unix File System 1800UGA universal graphics adapter 1801UI unit interval 1802UI user interface 1803UICC universal integrated circuit card 1804UID unique identifier 1805UID user identifier 1806UL upload 1807UMA uniform memory access 1808UMA upper memory area 1809UMB upper memory block 1810UML unified modeling language 1811UMPC ultra-mobile PC 1812UPNP universal plug and play 1813UPS uninterruptible power supply 1814URI uniform resource identifier 1815URL uniform resource locator 1816URN uniform resource name 1817USART universal synchronous/asynchronous receiver/transmitter 1818USB universal serial bus 1819USWC uncacheable speculative write combining 1820UT unit test 1821UTC coordinated universal time 1822UTF unicode transformation formats 1823UTP unshielded twisted pair 1824UTS UNIX time-sharing 1825UUCP Unix-to-Unix Copy Protocol 1826UUID universally unique identifier 1827UUOC useless use of cat 1828UUT unit under test 1829UX user experience 1830VA vertical alignment 1831VA virtual address 1832VA volt-ampere 1833VAX virtual address extension 1834VB Visual Basic 1835VBR volume boot record 1836VCA variable-gain amplifier 1837VCC common collector voltage 1838VCCP virtual chassis control protocol 1839VCF voltage-controlled filter 1840VCM virtual channel memory 1841VCO voltage-controlled oscillator 1842VCP virtual chassis port 1843VCS version control system 1844VDP vulnerability disclosure policy 1845VDPAU Video Decode and Presentation API for Unix 1846VES virtual execution system 1847VESA Video Electronics Standards Association 1848VFO variable-frequency oscillator 1849VFS virtual file system 1850VG volume group 1851VGA Video Graphics Array 1852VHDCI very high density cable interconnect 1853VID {VLAN,voltage level} identifier 1854VIM Vi IMproved 1855VIPT virtually indexed, physically tagged 1856VIVT virtually indexed, virtually tagged 1857VLAN virtual local area network 1858VLD variable-length decoding 1859VLIW very long instruction word 1860VLSI very large scale integration 1861VLSM variable length subnet mask 1862VM virtual {machine,memory} 1863VME virtual mode extension 1864VMX vector multimedia extensions 1865VMX virtual machine extensions 1866VNC virtual network computing 1867VNI virtual network identifier 1868VOD video on demand 1869VPD vital product data 1870VPN virtual private network 1871VPWS virtual private wire service 1872VR virtual reality 1873VRAM video random access memory 1874VRF virtual routing and forwarding 1875VRM voltage regulator module 1876VROC Virtual RAID On CPU 1877VRRP Virtual Router Redundancy Protocol 1878VSTP VLAN Spanning Tree Protocol 1879VTEP VXLAN tunnel endpoint 1880VTP VLAN Trunking Protocol 1881VXFS Veritas file system 1882VXLAN virtual extensible LAN 1883VXVM Veritas volume manager 1884W watt 1885W3C World Wide Web Consortium 1886WAFL write anywhere file layout 1887WAMP Web Application Messaging Protocol 1888WAN wide area network 1889WAP Wireless Application Protocol 1890WAP wireless access point 1891WDDM Windows Display Driver Model 1892WDM Windows Driver Model 1893WDT watchdog timer 1894WEP Wired Equivalent Privacy 1895WFI wait for interrupt 1896WFQ weighted fair queuing 1897WH write hit 1898WHEA Windows hardware error architecture 1899WIFI wireless fidelity 1900WLAN wireless local area network 1901WM write miss 1902WMF Windows meta file 1903WMI Windows Management Instrumentation 1904WOL Wake-on-LAN 1905WOM Wake-on-Modem 1906WOR Wake-on-Ring 1907WORM write once read many 1908WP WordPerfect 1909WP word processor 1910WP write protect 1911WPA Wi-Fi Protected Access 1912WPA2 Wi-Fi Protected Access II 1913WPAD web proxy auto-discovery protocol 1914WPS Wi-Fi Protected Setup 1915WRAM window random access memory 1916WS web services 1917WTC write through caching 1918WTD weighted tail drop 1919WWAN wireless wide area network 1920WWW world wide web 1921WYSIAYG what you see is all you get 1922WYSIWYG what you see is what you get 1923XBAR crossbar 1924XDMCP X Display Manager control protocol 1925XER XML encoding rules 1926XGA Extended Graphics Array 1927XHR XMLHttpRequest 1928XIP execute in place 1929XML Extensible Markup Language 1930XNA XNA's not acronymed 1931XNS Xerox network systems 1932XOR exclusive or 1933XP extreme programming 1934XSI X/Open System Interface 1935XSL extensible stylesheet language 1936XSLT extensible stylesheet language transformations 1937XSS cross site scripting 1938XT extended technology 1939XTACACS extended terminal access controller access-control system 1940XTI X/Open transport interface 1941XUL XML user interface language 1942YACC yet another compiler compiler 1943YAML YAML ain't markup language 1944YANG yet another next generation 1945YAWPFAPR you are welcome; please file a problem report 1946YP Yellow Pages 1947YTD year to date 1948ZAP ZFS attribute processor 1949ZBR zone bit recording 1950ZFOD zero-filled on demand 1951ZFS zettabyte file system 1952ZIF zero insertion force 1953ZIFS zero insertion force socket 1954ZIL ZFS intent log 1955ZMA zone multicast address 1956ZOI zero one infinity 1957ZOI zone of influence 1958ZPL ZFS Posix layer 1959ZVOL ZFS Volume 1960