acronyms.comp revision 1.392
1$NetBSD: acronyms.comp,v 1.392 2024/08/30 16:19:25 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 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 1509SBOM Software Bill of Materials 1510SBSA server base system architecture 1511SBU standard build unit 1512SC store conditional 1513SCA source code analyzer 1514SCADA supervisory control and data acquisition 1515SCC single chip cloud 1516SCC source code control 1517SCCP skinny call control protocol 1518SCCS Source Code Control System 1519SCI scalable coherent interface 1520SCI system control interrupt 1521SCIM smart common input method 1522SCM software configuration management 1523SCM source code management 1524SCM storage-class memory 1525SCO synchronous connection orientated 1526SCP secure copy 1527SCP system control processor 1528SCPI system control and power interface 1529SCSI Small Computer System Interface 1530SCTP Stream Control Transmission Protocol 1531SDDC software defined data center 1532SDEI software delegated exception interface 1533SDI symbol deinterleave 1534SDK software development kit 1535SDL Simple Declarative Language 1536SDL Simple Direct-media Layer 1537SDLC {software,system,systems} development life cycle 1538SDN software defined networking 1539SDP Session Description Protocol 1540SDR software defined radio 1541SDRAM synchronous dynamic random access memory 1542SDS software defined storage 1543SDT syntax-directed translation 1544SEA synchronous external abort 1545SED self-encrypting drive 1546SED stream editor 1547SEGV segmentation violation 1548SEMB serial ATA enclosure management bridge 1549SEO search engine optimization 1550SES SCSI enclosure services 1551SFC sequential function chart 1552SFI simple firmware interface 1553SFI software fault isolation 1554SFP small form-factor pluggable 1555SFTP SSH File Transfer Protocol 1556SFTP Serial File Transfer Protocol 1557SFTP Simple File Transfer Protocol 1558SGI Silicon Graphics, Inc 1559SGI software generated interrupt 1560SGMII serial gigabit media independent interface 1561SGPIO serial general purpose input/output 1562SGRAM synchronous graphics random access memory 1563SHA secure hash algorithm 1564SICP structure and interpretation of computer programs 1565SIDH supersingular isogeny Diffie-Hellman 1566SIEM security information and event management 1567SIF source input format 1568SIFS short inter-frame space 1569SIM subscriber identity module 1570SIMD single instruction, multiple data 1571SIMM single inline memory module 1572SIP Session Initiation Protocol 1573SIPR secret IP router (network) 1574SIR signal-to-interference ratio 1575SIR slow infrared 1576SIRT security incident response team 1577SISD single instruction, single data 1578SIV synthetic intialization vector 1579SLAAC stateless address auto-configuration 1580SLC single-level cell 1581SLDRAM synchronous-link dynamic random access memory 1582SLED single large expensive disk 1583SLI scalable link interface 1584SLI scan-line interleave 1585SLIC system license internal code 1586SLOC source lines of code 1587SLRU segmented LRU 1588SMA smart memory access 1589SMAF system management action field 1590SMAP Simple Mail Access Protocol 1591SMAP supervisor mode access prevention 1592SMART self-monitoring analysis and reporting technology 1593SMB Server Message Block 1594SMB system management bus 1595SMBIOS System Management BIOS 1596SMC system management controller 1597SMD storage module device 1598SMEP supervisor mode execution protection 1599SMF single mode fiber 1600SMI structure of management information 1601SMI system management interrupt 1602SMM system management mode 1603SMP serial management protocol 1604SMP symmetric multiprocessing 1605SMR shingled magnetic recording 1606SMR state machine replication 1607SMT simultaneous multithreading 1608SMTP Simple Mail Transfer Protocol 1609SMU system management unit 1610SNA systems network architecture 1611SNAP Sub-Network Access Protocol 1612SNIA Storage Networking Industry Association 1613SNMP Simple Network Management Protocol 1614SNR signal-to-noise ratio 1615SOA service oriented architecture 1616SOAP Simple Object Access Protocol 1617SOC security operations center 1618SOC system on chip 1619SOF start of frame 1620SOH start of header 1621SOHO small office/home office 1622SOL serial over LAN 1623SOM system on module 1624SP service pack 1625SP stack pointer 1626SPA storage pool allocator 1627SPAN switched port analyzer 1628SPARC scalable processor architecture 1629SPARQL SPARQL Protocol and RDF Query Language 1630SPD security policy database 1631SPD serial presence detect 1632SPDIF Sony/Philips digital interface format 1633SPI serial peripheral interface 1634SPI stateful packet inspection 1635SPIR standard portable intermediate representation 1636SPL secondary program loader 1637SPL spinlock 1638SPL system interrupt priority level 1639SPMD single process, multiple data 1640SPR special purpose register 1641SPT sectors per track 1642SQA software quality assurance 1643SQCIF sub quarter common intermediate format 1644SQL Structured Query Language 1645SRAM static random access memory 1646SRC sample rate conversion 1647SRP SCSI RDMA protocol 1648SRR shaped round robin 1649SRTP Secure Real-time Transport Protocol 1650SS self-snoop 1651SS stack segment 1652SSA static single assignment 1653SSAP source service access point 1654SSB single-sideband modulation 1655SSB speculative store bypass 1656SSBB speculative store bypass barrier (Arm) 1657SSBD speculative store bypass disable (Intel) 1658SSC spread spectrum clock 1659SSD solid state drive 1660SSE streaming SIMD extensions 1661SSFDC solid state floppy disc card 1662SSH secure shell 1663SSI server side includes 1664SSID service set identifier 1665SSL secure sockets layer 1666SSP stack smashing protection 1667SSRF server-side request forgery 1668SSTP secure socket tunneling protocol 1669STC software thermal control 1670STD state transition diagram 1671STEK session ticket encryption key 1672STM software transactional memory 1673STOMP Streaming Text Oriented Messaging Protocol 1674STP Spanning Tree Protocol 1675STP shielded twisted pair 1676STRG spanning tree root guard 1677SUN Stanford University Network 1678SUS Single Unix Specification 1679SUT system under test 1680SVC switched virtual circuit 1681SVG scalable vector graphics 1682SVGA Super Video Graphics Array 1683SVI {switch,switched} virtual interface 1684SVM secure virtual machine 1685SVM support vector machine 1686SVR System V Release 1687SVS Separate Virtual Space 1688SWF Shockwave Flash 1689SWIG simplified wrapper [and] interface generator 1690SYR symbol timing recovery 1691TA test assertion 1692TA transmitter address 1693TAA transactional asynchronous abort (Intel) 1694TACACS terminal access controller access-control system 1695TAI international atomic time 1696TAO track at once 1697TAOCP The Art of Computer Programming 1698TAP Test Anything Protocol 1699TAS test and set 1700TB terabyte 1701TBNF transitional backus-naur form 1702TCB trace capture buffer 1703TCB trusted computing base 1704TCC thermal control circuit 1705TCL tool command language 1706TCP Transmission Control Protocol 1707TCQ tagged command queueing 1708TDC time [to] digital converter 1709TDD test-driven development 1710TDD time division duplex 1711TDM time division multiplexing 1712TDMA time division multiple access 1713TDOA time difference of arrival 1714TDP thermal design {point,power} 1715TDR time-domain reflectometry 1716TECO Text Editor and Corrector 1717TEE Trusted Execution Environment 1718TFT thin film transistor 1719TFTP Trivial File Transfer Protocol 1720TIAS try it and see 1721TIFF tagged image file format 1722TITS try it to see 1723TK temporal key 1724TKIP Temporal Key Integrity Protocol 1725TLA top level aggregator 1726TLB translation lookaside buffer 1727TLD top level domain 1728TLER time-limited error recovery 1729TLI transport layer interface 1730TLS thread local storage 1731TLS transport layer security 1732TM Turing machine 1733TM thermal monitor 1734TMDS transition minimized differential signaling 1735TMG transmogrifier 1736TMO timeout 1737TOD time of day 1738TOE TCP offload engine 1739TOFU trust on first use 1740TOS terms of service 1741TOS trusted operating system 1742TOS type of service 1743TOTP time-based one time password 1744TP transaction processing 1745TPI tracks per inch 1746TPM transactions per minute 1747TPM trusted platform module 1748TPR task priority register 1749TPS transactions per second 1750TPS transmission parameters signaling 1751TR task register 1752TR token ring 1753TRL timing recovery loop 1754TRNG true random number generator 1755TS terminal services 1756TS time series 1757TS time stamp 1758TS transport stream 1759TSAN Thread Sanitizer 1760TSC time stamp counter 1761TSD time stamp disable 1762TSDB time series database 1763TSL test, set, lock 1764TSO TCP segmentation offload 1765TSO Total Store Ordering 1766TSO time sharing option 1767TSP Time-Stamp Protocol 1768TSP Tunnel Setup Protocol 1769TSP time synchronization protocol 1770TSP traveling salesman problem 1771TSS task state segment 1772TSV tab-separated values 1773TSX transaction synchronization extensions (Intel) 1774TTL time to live 1775TTL transistor-transistor logic 1776TTM translation table maps 1777TTY teletype 1778TU translation unit 1779TUI {terminal,text-based,textual} user interface 1780TX {transmit out,transmitter} 1781TXG transaction group 1782TZ time zone 1783UAC user {access,account} control 1784UAF use-after-free 1785UART universal asynchronous receiver/transmitter 1786UAT user acceptance testing 1787UB undefined behavior 1788UBSAN Undefined Behavior Sanitizer 1789UC uncacheable 1790UCS unified computing system 1791UCS uniform-cost search 1792UCS universal coded character set 1793UDI uniform driver interface 1794UDMA ultra DMA 1795UDO ultra density optical 1796UDP User Datagram Protocol 1797UDS Unix Domain Socket 1798UEFI unified extensible firmware interface 1799UFO UDP fragmentation offload 1800UFS Unix File System 1801UGA universal graphics adapter 1802UI unit interval 1803UI user interface 1804UICC universal integrated circuit card 1805UID unique identifier 1806UID user identifier 1807UL upload 1808UMA uniform memory access 1809UMA upper memory area 1810UMB upper memory block 1811UML unified modeling language 1812UMPC ultra-mobile PC 1813UPNP universal plug and play 1814UPS uninterruptible power supply 1815URI uniform resource identifier 1816URL uniform resource locator 1817URN uniform resource name 1818USART universal synchronous/asynchronous receiver/transmitter 1819USB universal serial bus 1820USWC uncacheable speculative write combining 1821UT unit test 1822UTC coordinated universal time 1823UTF unicode transformation formats 1824UTP unshielded twisted pair 1825UTS UNIX time-sharing 1826UUCP Unix-to-Unix Copy Protocol 1827UUID universally unique identifier 1828UUOC useless use of cat 1829UUT unit under test 1830UX user experience 1831VA vertical alignment 1832VA virtual address 1833VA volt-ampere 1834VAX virtual address extension 1835VB Visual Basic 1836VBR volume boot record 1837VCA variable-gain amplifier 1838VCC common collector voltage 1839VCCP virtual chassis control protocol 1840VCF voltage-controlled filter 1841VCM virtual channel memory 1842VCO voltage-controlled oscillator 1843VCP virtual chassis port 1844VCS version control system 1845VDP vulnerability disclosure policy 1846VDPAU Video Decode and Presentation API for Unix 1847VES virtual execution system 1848VESA Video Electronics Standards Association 1849VFO variable-frequency oscillator 1850VFS virtual file system 1851VG volume group 1852VGA Video Graphics Array 1853VHD virtual hard disk 1854VHDCI very high density cable interconnect 1855VID {VLAN,voltage level} identifier 1856VIM Vi IMproved 1857VIPT virtually indexed, physically tagged 1858VIVT virtually indexed, virtually tagged 1859VLAN virtual local area network 1860VLD variable-length decoding 1861VLIW very long instruction word 1862VLSI very large scale integration 1863VLSM variable length subnet mask 1864VM virtual {machine,memory} 1865VME virtual mode extension 1866VMX vector multimedia extensions 1867VMX virtual machine extensions 1868VNC virtual network computing 1869VNI virtual network identifier 1870VOD video on demand 1871VPD vital product data 1872VPN virtual private network 1873VPWS virtual private wire service 1874VR virtual reality 1875VRAM video random access memory 1876VRF virtual routing and forwarding 1877VRM voltage regulator module 1878VROC Virtual RAID On CPU 1879VRRP Virtual Router Redundancy Protocol 1880VSTP VLAN Spanning Tree Protocol 1881VTEP VXLAN tunnel endpoint 1882VTP VLAN Trunking Protocol 1883VXFS Veritas file system 1884VXLAN virtual extensible LAN 1885VXVM Veritas volume manager 1886W watt 1887W3C World Wide Web Consortium 1888WAFL write anywhere file layout 1889WAMP Web Application Messaging Protocol 1890WAN wide area network 1891WAP Wireless Application Protocol 1892WAP wireless access point 1893WDDM Windows Display Driver Model 1894WDM Windows Driver Model 1895WDT watchdog timer 1896WEP Wired Equivalent Privacy 1897WFI wait for interrupt 1898WFQ weighted fair queuing 1899WH write hit 1900WHEA Windows hardware error architecture 1901WIFI wireless fidelity 1902WLAN wireless local area network 1903WM write miss 1904WMF Windows meta file 1905WMI Windows Management Instrumentation 1906WOL Wake-on-LAN 1907WOM Wake-on-Modem 1908WOR Wake-on-Ring 1909WORM write once read many 1910WP WordPerfect 1911WP word processor 1912WP write protect 1913WPA Wi-Fi Protected Access 1914WPA2 Wi-Fi Protected Access II 1915WPAD web proxy auto-discovery protocol 1916WPS Wi-Fi Protected Setup 1917WRAM window random access memory 1918WS web services 1919WTC write through caching 1920WTD weighted tail drop 1921WWAN wireless wide area network 1922WWW world wide web 1923WYSIAYG what you see is all you get 1924WYSIWYG what you see is what you get 1925XBAR crossbar 1926XDMCP X Display Manager control protocol 1927XER XML encoding rules 1928XGA Extended Graphics Array 1929XHR XMLHttpRequest 1930XIP execute in place 1931XML Extensible Markup Language 1932XNA XNA's not acronymed 1933XNS Xerox network systems 1934XOR exclusive or 1935XP extreme programming 1936XSI X/Open System Interface 1937XSL extensible stylesheet language 1938XSLT extensible stylesheet language transformations 1939XSS cross site scripting 1940XT extended technology 1941XTACACS extended terminal access controller access-control system 1942XTI X/Open transport interface 1943XUL XML user interface language 1944YACC yet another compiler compiler 1945YAML YAML ain't markup language 1946YANG yet another next generation 1947YAWPFAPR you are welcome; please file a problem report 1948YP Yellow Pages 1949YTD year to date 1950ZAP ZFS attribute processor 1951ZBR zone bit recording 1952ZFOD zero-filled on demand 1953ZFS zettabyte file system 1954ZIF zero insertion force 1955ZIFS zero insertion force socket 1956ZIL ZFS intent log 1957ZMA zone multicast address 1958ZOI zero one infinity 1959ZOI zone of influence 1960ZPL ZFS Posix layer 1961ZVOL ZFS Volume 1962