acronyms.comp revision 1.394
1$NetBSD: acronyms.comp,v 1.394 2024/09/27 20:08:21 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 877KDF key derivation function 878KEK key encryption key 879KEM key encapsulation mechanism 880KLOC thousand lines of code 881KMS kernel-mode setting 882KPI kernel programming interface 883KVA kernel virtual address 884KVM kernel virtual machine 885KVM kernel virtual memory 886KVM keyboard, video, [and] mouse 887L2CAP link layer control and adaptation protocol 888LAG link aggregation group 889LAMP Linux Apache MySQL {Perl,PHP,Python} 890LAN local area network 891LAPIC local advanced programmable interrupt controller 892LAR load access rights 893LBA logical block addressing 894LBNF labeled backus-naur form 895LBS location-based service 896LCD liquid crystal display 897LCP link control protocol 898LDA local delivery agent 899LDAP Lightweight Directory Access Protocol 900LDR light-dependent resistor 901LDT local descriptor table 902LE logical extent 903LED light emitting diode 904LELL low energy link layer 905LER label edge router 906LF line feed 907LF low frequency 908LFM lowest frequency mode 909LFN long file names 910LFO low-frequency oscillation 911LFS log-structured file system 912LFU least frequently used 913LHP loop heat pipe 914LIF logical interchange format 915LIFO last in, first out 916LILO LInux LOader 917LILO last in, last out 918LINT local interrupt 919LIR local Internet registry 920LISP LISt Processor 921LISP Locator/ID Separation Protocol 922LKM {Linux,loadable} kernel module 923LKML Linux kernel mailing list 924LL load linked 925LL/SC load linked/store conditional 926LLC logical link control 927LLD low-level design 928LLDD low-level design document 929LLDP link layer discovery protocol 930LLF low level format 931LLMNR link-local multicast name resolution 932LLVM Low Level Virtual Machine 933LM long mode 934LMCE local machine check exception 935LMI local management interface 936LMM link management mode 937LMP link management protocol 938LNO loop nest optimization 939LOC lines of code 940LOM lights-out management 941LPC low pin count 942LPE Linux performance events 943LPS local positioning system 944LRC longitudinal redundancy check 945LRM left-to-right mark 946LRO Large Receive Offload 947LRO left-to-right override 948LRU least recently used 949LS link state 950LSAN Leak Sanitizer 951LSB Linux standards base 952LSB least significant {bit,byte} 953LSI large scale integration 954LSL load segment limit 955LSM log structured merge 956LSN Large Scale NAT 957LSN log sequence number 958LSO large send offload 959LSR label switch router 960LTCC low temperature co-fired ceramic 961LTO linear tape-open 962LTO link time optimization 963LTR left to right 964LTR letter(-sized paper) 965LTR load task register 966LTS long term support 967LUA Lua Uppercase Accident 968LUN logical unit number 969LV logical volume 970LVDS Low-Voltage Differential Signaling 971LVM logical volume management 972LVT local vector table 973LWP light-weight process 974LZSS Lempel Ziv Storer Szymanski 975LZW Lempel Ziv Welch 976MAB MAC authentication bypass 977MAC mandatory access control 978MAC message authentication {check,code} 979MAC {media,medium} access control 980MADT multiple APIC descriptor table 981MAMR microwave-assisted magnetic recording 982MB megabyte 983MBA multi-boot agent 984MBR master boot record 985MBS megabits per second 986MC memory controller 987MCA MicroChannel architecture 988MCA machine check architecture 989MCC multiversion concurrency control 990MCE machine check exception 991MCGA Multi-Color Graphics Array 992MCH memory controller hub 993MCLAG multi-chassis link aggregation group 994MCM multi-chip module 995MCQ memory controlled queue 996MD MiniDisc 997MD machine-dependent 998MD-SAL model-driven service abstraction layer 999MDA Monochrome Display Adapter 1000MDA mail delivery agent 1001MDC Management Data Clock 1002MDI Medium Dependent Interface 1003MDI-X Medium Dependent Interface Crossover 1004MDIO Management Data Input/Output 1005MDMX MIPS Digital Media eXtension 1006MDRAM multibank dynamic random access memory 1007MDS microarchitectural data sampling 1008MESI modified, exclusive, shared, invalid 1009MFC Microsoft Foundation Classes 1010MFC merge from current 1011MFM modified frequency modulation 1012MFU most frequently used 1013MGCP media gateway control protocol 1014MHU message handling unit 1015MI machine interface 1016MI machine-independent 1017MIB management information base 1018MIC message integrity {check,code} 1019MID mobile Internet device 1020MIDI musical instrument digital interface 1021MIF management information format 1022MII media independent interface 1023MIM man in the middle 1024MIMD multiple instruction, multiple data 1025MIME Multipurpose Internet Mail Extensions 1026MIMO multiple input multiple output 1027MIPS Microprocessor without Interlocked Pipeline Stages 1028MIPS million instructions per second 1029MISD multiple instruction, single data 1030MIT Massachusetts Institute of Technology 1031MITM man in the middle 1032ML machine language 1033ML machine learning 1034ML mailing list 1035ML markup language 1036ML maximum likelihood 1037ML-KEM module-lattice based key-encapsulation mechanism 1038MLAG multi-chassis link aggregation group 1039MLC multi-level cell 1040MLD multicast listener discovery 1041MLHP micro loop heat pipe 1042MLIR multi-level intermediate representation 1043MLO MMC loader 1044MMC multi-media card 1045MMF multi-mode fiber 1046MMIC monolithic microwave integrated circuit 1047MMIO memory mapped input/output 1048MMORPG massive multiplayer online role playing game 1049MMRP multiple MAC registration protocol 1050MMU memory management unit 1051MMX matrix math extension 1052MMX multimedia extension 1053MMX multiple math extension 1054MO magneto-optical 1055MOESI modified, owned, exclusive, shared, invalid 1056MOF maximum operating frequency 1057MOSFET metal-oxide-semiconductor field-effect transistor 1058MOSI modified, owned, shared, invalid 1059MP multi-platform 1060MP multiplayer 1061MP {multiprocessing,multiprocessor} 1062MPEG moving picture experts group 1063MPI message passing interface 1064MPLS Multiprotocol Label Switching 1065MPP massively parallel processor 1066MPS memory pool system 1067MPS multiprocessor specification 1068MQTT Message Queuing Telemetry Transport 1069MR modem ready 1070MRO method resolution order 1071MRP multiple registration protocol 1072MRU most recently used 1073MS Microsoft 1074MSAN Memory Sanitizer 1075MSB most significant {bit,byte} 1076MSC message sequence chart 1077MSE mean square error 1078MSF minutes seconds frames 1079MSI message signaled interrupt 1080MSI modified, shared, invalid 1081MSR {machine state,model-specific} register 1082MSS maximum segment size 1083MSTP Multiple Spanning Tree Protocol 1084MT machine translation 1085MTA mail transfer agent 1086MTBF mean time between failures 1087MTP media transfer protocol 1088MTRR memory type range register 1089MTTF mean time to failure 1090MTU maximum transmission unit 1091MUA mail user agent 1092MUD multi-user domain 1093MVCC multiversion concurrency control 1094MVR multicast VLAN registration 1095MVRP multiple VLAN registration protocol 1096MWE module width encoding 1097MX mail exchange 1098NACK negative acknowledgement 1099NAK negative acknowledgement 1100NAN neighbor awareness networking 1101NAN not a number 1102NAPT Network Address Port Translation 1103NAS network attached storage 1104NAT network address translation 1105NAV network allocation vector 1106NC numerical control 1107NC-SI network controller sideband interface 1108NCO numerically-controlled oscillator 1109NCP Network Control Protocol 1110NCQ native command queuing 1111NCSI network connectivity status indicator 1112ND neighbor discovery 1113NDFA nondeterministic finite automaton 1114NDIS network driver interface specification 1115NE numeric error 1116NEWS Network extensible Window System 1117NFA nondeterministic finite automaton 1118NFC near-field communication 1119NFCI no functional change intended 1120NFS network file system 1121NFV network function virtualization 1122NHACP NABU HCCA Application Communication Protocol 1123NIA next instruction address 1124NIC network information center 1125NIC network interface card 1126NIDS network intrusion detection system 1127NIKE Non-Interactive Key Exchange 1128NIP network interface protocol 1129NIPR non-classified IP router (network) 1130NIPS network intrusion prevention system 1131NIS network information service 1132NIST National Institute of Standards and Technology 1133NLS native language support 1134NMI non-maskable interrupt 1135NMR nonce-misuse resistance 1136NNTP Network News Transfer Protocol 1137NOC network operations center 1138NOP no operation 1139NOS network operating system 1140NP nondeterministic polynomial time 1141NRND not recommended for new designs 1142NRZ non-return to zero 1143NSA National Security Agency 1144NSA nation-state adversary 1145NSA no such agency 1146NTA negative trust anchor 1147NTM non-deterministic Turing machine 1148NTP Network Time Protocol 1149NUMA non-uniform memory access 1150NURBS non-uniform rational basis spline 1151NVD National Vulnerability Database 1152NVMM NetBSD Virtual Machine Monitor 1153NVMM non-volatile main memory 1154NVRAM non-volatile random access memory 1155NW not write-through 1156NX no execute 1157OAEP optimal asymmetric encryption padding 1158OAM operations, administration, and {management,maintenance} 1159OBO off by one 1160OBOE off by one error 1161OCL object constraint language 1162OCR optical character recognition 1163ODBC Open Database Connectivity 1164ODCM on-demand clock modulation 1165ODE offline device environment 1166ODI open data-link interface 1167ODM object data manager 1168ODMR on-demand mail relay 1169ODT on-die termination 1170OEM original equipment manufacturer 1171OFB output feedback 1172OFDM orthogonal frequency division multiplexing 1173OFET organic field-effect transistor 1174OLAP online analytical processing 1175OLE object linking and embedding 1176OLTP online transaction processing 1177ONCE on-{chip,circuit} emulation 1178ONFI open nand flash interface 1179OO OpenOffice 1180OO object oriented 1181OOB out of band 1182OOE out of order execution 1183OOM out of memory 1184OOO OpenOffice.org 1185OOP object oriented programming 1186OOPS object oriented programming systems 1187OOSE object oriented software engineering 1188OPM operations per minute 1189OPS operations per second 1190OQL Object Query Language 1191ORB object request broker 1192ORM object-relational mapping 1193OS operating system 1194OSD object-based storage device 1195OSD open source definition 1196OSF open software foundation 1197OSI Open Source Initiative 1198OSI open systems interconnection 1199OSPF open shortest path first 1200OSPM OS power management 1201OSS open sound system 1202OSS open source software 1203OSVW operating system visible workarounds 1204OTP one time password 1205OTP open telecom platform 1206OU organizational unit 1207OUI organizationally unique identifier 1208OWASP Open Web Application Security Project 1209OWL Web Ontology Language 1210P2P PCI to PCI 1211P2P peer to peer 1212PA phase accumulator 1213PA physical address 1214PAAS platform as a service 1215PAC phase-amplitude converter 1216PAE physical address extension 1217PAGP port aggregation protocol 1218PAL phase alternating line 1219PAL programmable array logic 1220PAM pluggable authentication modules 1221PAM pulse amplitude modulation 1222PAP password authentication protocol 1223PAT page attribute table 1224PAT port address translation 1225PATA parallel ATA 1226PAX portable archive exchange 1227PBE pending break encoding 1228PBE programming by example 1229PBR partition boot record 1230PBX private branch exchange 1231PC personal computer 1232PC program counter 1233PCB Protocol Control Block 1234PCB printed circuit board 1235PCB process control block 1236PCBC propagating cipher block chaining 1237PCC Portable C Compiler 1238PCD page-level cache disable 1239PCE path computation element 1240PCE performance-monitor counter enable 1241PCEP Path Computation Element Protocol 1242PCH platform controller hub 1243PCI peripheral component interconnect 1244PCM phase change memory 1245PCM pulse code modulation 1246PCMCIA Personal Computer Memory Card International Association 1247PCP Port Control Protocol 1248PD public domain 1249PDA personal digital assistant 1250PDA pushdown automaton 1251PDAG propositional directed acyclic graph 1252PDB power distribution board 1253PDF portable document format 1254PDM pulse-duration modulation 1255PDN pull-down network 1256PDP page {descriptor,directory} page 1257PDS product data sheet 1258PDU protocol data unit 1259PE portable executable 1260PE protection enable 1261PE provider edge 1262PEAP Protected EAP 1263PECI platform environment control interface 1264PED PIN Entry Device 1265PEP protocol extension protocol 1266PER packed encoding rules 1267PFS perfect forward secrecy 1268PGAS partitioned global address space 1269PGE page global enable 1270PGO profile guided optimization 1271PGP Pretty Good Privacy 1272PHB PCI host bridge 1273PHP PHP: Hypertext Preprocessor 1274PIC performance instrumentation counters 1275PIC position independent code 1276PIC programmable interrupt controller 1277PICNIC problem in chair, not in computer 1278PID process id 1279PIE position independent executable 1280PIL Priority Interrupt Level 1281PIM personal information manager 1282PIM platform-independent model 1283PIO programmed input/output 1284PIPT physically indexed, physically tagged 1285PIQ prefetch input queue 1286PIR private information retrieval 1287PIT programmable interrupt timer 1288PIV personal identity verification 1289PIX Private Internet eXchange 1290PKCS public-key cryptography standards 1291PKE public key encryption 1292PKI public key infrastructure 1293PLC programmable logic controller 1294PLD programmable logic device 1295PLL phase locked loop 1296PLRU pseudo LRU 1297PLT procedure linkage table 1298PLTM package level thermal management 1299PM power management 1300PM {phase,pulse} modulation 1301PMC performance monitoring counters 1302PME power management event 1303PMEG page map entry group 1304PMI performance monitoring infrastructure 1305PMI platform management interrupt 1306PMIC power management integrated circuit 1307PMIO port-mapped input/output 1308PMT photo-multiplier tube 1309PMU performance monitoring units 1310PMU power management unit 1311PNG portable network graphics 1312PNP plug and play 1313POE power over ethernet 1314POF probability of failure 1315POP Post Office Protocol 1316POP power on password 1317POR plan of record 1318POSIX Portable Operating System Interface [for Unix] 1319POST power on self test 1320POTS plain old telephone system 1321POWER Performance Optimization With Enhanced RISC 1322POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1323PP pair programming 1324PPB PCI [to] PCI bridge 1325PPC Power Performance Computing 1326PPC PowerPC 1327PPI pixels per inch 1328PPM pages per minute 1329PPP Point-to-Point Protocol 1330PPPOA Point-to-Point Protocol over ATM 1331PPPOE Point-to-Point Protocol over Ethernet 1332PPR processor programming reference 1333PPT powerpoint 1334PPT punched paper tape 1335PPU physics processing unit 1336PQC post-quantum cryptography 1337PRAM Parameter RAM 1338PRBS pseudorandom bit sequence 1339PRF pseudorandom function [family] 1340PRG pseudorandom generator 1341PRML partial response, maximum likelihood 1342PRN pseudorandom {noise,number} 1343PRNG pseudorandom number generator 1344PROM programmable read only memory 1345PRP pseudorandom permutation 1346PRU Programmable Realtime Unit 1347PS PostScript 1348PSD power spectral density 1349PSE page size extensions 1350PSK phase shift keying 1351PSK pre-shared key 1352PSTN public switched telephone network 1353PSW program status word 1354PTE page table entry 1355PTLA pseudo top level aggregator 1356PTP page table page 1357PTV perceived target value 1358PU processing unit 1359PUC personal unblocking code 1360PUN physical unit number 1361PV physical volume 1362PVC permanent virtual circuit 1363PVG physical volume group 1364PVI protected-mode virtual interrupt 1365PVRST Per-VLAN rapid spanning tree 1366PVST Per-VLAN Spanning Tree 1367PWM pulse width modulation 1368PXE preboot execution environment 1369QA quality assurance 1370QAM quadrature amplitude modulation 1371QAM quality assurance management 1372QBE query by example 1373QC quality control 1374QCIF quarter common intermediate format 1375QDI quasi delay insensitive 1376QOI quality of implementation 1377QOI quick order interface 1378QOS quality of service 1379QUIC Quick UDP Internet Connections 1380QVL qualified vendor list 1381R/O read only 1382R/W read/write 1383RA receiver address 1384RA remote assistance 1385RA resource affinity 1386RA router advertisement 1387RAD rapid application development 1388RADIUS remote authentication dial-in user service 1389RAID redundant array of {independent,inexpensive} disks 1390RAII resource acquisition is initialization 1391RAM random access memory 1392RAS reliability, availability and serviceability 1393RAS remote access service 1394RAS restartable atomic sequence 1395RAS row address strobe 1396RAT register allocation table 1397RAT remote access trojan 1398RBF radial basis function 1399RBL real-time blackhole list 1400RBL reputation block list 1401RBNF routing backus-naur form 1402RBT red-black tree 1403RC release candidate 1404RC remote control 1405RC run commands 1406RCS Revision Control System 1407RCU read, copy, update 1408RDB Rigid Disk Block 1409RDBMS relational database management system 1410RDF Resource Description Framework 1411RDM relational data model 1412RDMA remote direct memory access 1413RDP remote desktop protocol 1414RDRAM Rambus DRAM 1415RE regular expression 1416REPL read, evaluate, print, loop 1417REST representational state transfer 1418RF radio frequency 1419RFB remote frame buffer 1420RFI radio frequency interference 1421RFO request for ownership 1422RFU reserved for future use 1423RGB red green blue 1424RGBA red green blue alpha 1425RGMII reduced gigabit media independent interface 1426RH read hit 1427RHEL Red Hat Enterprise Linux 1428RHL Red Hat Linux 1429RIB routing information base 1430RIFF Resource Interchange File Format 1431RIP Raster Image Processor 1432RIP Routing Information Protocol 1433RIPR releasable IP router (network) 1434RIR regional Internet registry 1435RISC reduced instruction set {computer,computing} 1436RKM ROM Kernel Manual 1437RLE run length encoding 1438RLL run length limited 1439RLO right-to-left override 1440RM read miss 1441RMCP Remote Management Control Protocol 1442RMI remote method invocation 1443RMO Relaxed Memory Ordering 1444RMPM rapid memory power management 1445RMS root mean square 1446RMW read, modify, write 1447RNG random number generator 1448ROA route origin authorization 1449ROM read only memory 1450ROP return-oriented programming 1451RPC remote procedure call 1452RPG Report Program Generator 1453RPKI resource PKI 1454RPL requested privilege level 1455RPM revolutions per minute 1456RPN reverse Polish notation 1457RPVST Rapid Per-VLAN Spanning Tree 1458RR random replacement 1459RR round robin 1460RS relay station 1461RSA Rivest, Shamir, [and] Adleman 1462RSC Receive Segment Coalescing 1463RSIP Realm Specific IP 1464RSN Robust Secure Network 1465RSS Receive Side Scaling 1466RSS really simple syndication 1467RSS residual sum of squares 1468RSTP Rapid Spanning Tree Protocol 1469RT real time 1470RTC real time clock 1471RTC real time computing 1472RTF rich text format 1473RTL register transfer language 1474RTL resistor-transistor logic 1475RTL right to left 1476RTM restricted transactional memory (Intel) 1477RTOS real time operating system 1478RTP Real-time Transport Protocol 1479RTS request to send 1480RTT round trip time 1481RTTI run-time type information 1482RUP rational unified process 1483RW Rabin-Williams 1484RWM read-write memory 1485RX {receive,receiver} 1486S/PDIF Sony/Philips Digital Interface Format 1487SA security advisory 1488SA security association 1489SA source address 1490SA structured analysis 1491SAAS software as a service 1492SABRE Semi-automated business research environment 1493SACD super audio compact disc 1494SAD security association database 1495SAF-TE SCSI accessed fault-tolerant enclosure 1496SAGE Semi-automated ground environment 1497SAL {service,system} abstraction layer 1498SAM serial access memory 1499SAM sum addressed memory 1500SAML security assertion markup language 1501SAN storage area network 1502SAP service access point 1503SAPIC streamlined advanced programmable interrupt controller 1504SASD structured analysis, structured design 1505SASI Shugart Associates System Interface 1506SASL simple authentication [and] security layer 1507SATA serial advanced technology attachment 1508SAX simple API for XML 1509SB sound blaster 1510SBI supervisor binary interface 1511SBOM Software Bill of Materials 1512SBSA server base system architecture 1513SBU standard build unit 1514SC store conditional 1515SCA source code analyzer 1516SCADA supervisory control and data acquisition 1517SCC single chip cloud 1518SCC source code control 1519SCCP skinny call control protocol 1520SCCS Source Code Control System 1521SCI scalable coherent interface 1522SCI system control interrupt 1523SCIM smart common input method 1524SCM software configuration management 1525SCM source code management 1526SCM storage-class memory 1527SCO synchronous connection orientated 1528SCP secure copy 1529SCP system control processor 1530SCPI system control and power interface 1531SCSI Small Computer System Interface 1532SCTP Stream Control Transmission Protocol 1533SDDC software defined data center 1534SDEI software delegated exception interface 1535SDI symbol deinterleave 1536SDK software development kit 1537SDL Simple Declarative Language 1538SDL Simple Direct-media Layer 1539SDLC {software,system,systems} development life cycle 1540SDN software defined networking 1541SDP Session Description Protocol 1542SDR software defined radio 1543SDRAM synchronous dynamic random access memory 1544SDS software defined storage 1545SDT syntax-directed translation 1546SEA synchronous external abort 1547SED self-encrypting drive 1548SED stream editor 1549SEGV segmentation violation 1550SEMB serial ATA enclosure management bridge 1551SEO search engine optimization 1552SES SCSI enclosure services 1553SFC sequential function chart 1554SFI simple firmware interface 1555SFI software fault isolation 1556SFP small form-factor pluggable 1557SFTP SSH File Transfer Protocol 1558SFTP Serial File Transfer Protocol 1559SFTP Simple File Transfer Protocol 1560SGI Silicon Graphics, Inc 1561SGI software generated interrupt 1562SGMII serial gigabit media independent interface 1563SGPIO serial general purpose input/output 1564SGRAM synchronous graphics random access memory 1565SHA secure hash algorithm 1566SICP structure and interpretation of computer programs 1567SIDH supersingular isogeny Diffie-Hellman 1568SIEM security information and event management 1569SIF source input format 1570SIFS short inter-frame space 1571SIM subscriber identity module 1572SIMD single instruction, multiple data 1573SIMM single inline memory module 1574SIP Session Initiation Protocol 1575SIPR secret IP router (network) 1576SIR signal-to-interference ratio 1577SIR slow infrared 1578SIRT security incident response team 1579SISD single instruction, single data 1580SIV synthetic intialization vector 1581SLAAC stateless address auto-configuration 1582SLC single-level cell 1583SLDRAM synchronous-link dynamic random access memory 1584SLED single large expensive disk 1585SLI scalable link interface 1586SLI scan-line interleave 1587SLIC system license internal code 1588SLOC source lines of code 1589SLRU segmented LRU 1590SMA smart memory access 1591SMAF system management action field 1592SMAP Simple Mail Access Protocol 1593SMAP supervisor mode access prevention 1594SMART self-monitoring analysis and reporting technology 1595SMB Server Message Block 1596SMB system management bus 1597SMBIOS System Management BIOS 1598SMC system management controller 1599SMD storage module device 1600SMEP supervisor mode execution protection 1601SMF single mode fiber 1602SMI structure of management information 1603SMI system management interrupt 1604SMM system management mode 1605SMP serial management protocol 1606SMP symmetric multiprocessing 1607SMR shingled magnetic recording 1608SMR state machine replication 1609SMT simultaneous multithreading 1610SMTP Simple Mail Transfer Protocol 1611SMU system management unit 1612SNA systems network architecture 1613SNAP Sub-Network Access Protocol 1614SNIA Storage Networking Industry Association 1615SNMP Simple Network Management Protocol 1616SNR signal-to-noise ratio 1617SOA service oriented architecture 1618SOAP Simple Object Access Protocol 1619SOC security operations center 1620SOC system on chip 1621SOF start of frame 1622SOH start of header 1623SOHO small office/home office 1624SOL serial over LAN 1625SOM system on module 1626SP service pack 1627SP stack pointer 1628SPA storage pool allocator 1629SPAN switched port analyzer 1630SPARC scalable processor architecture 1631SPARQL SPARQL Protocol and RDF Query Language 1632SPD security policy database 1633SPD serial presence detect 1634SPDIF Sony/Philips digital interface format 1635SPI serial peripheral interface 1636SPI stateful packet inspection 1637SPIR standard portable intermediate representation 1638SPL secondary program loader 1639SPL spinlock 1640SPL system interrupt priority level 1641SPMD single process, multiple data 1642SPR special purpose register 1643SPT sectors per track 1644SQA software quality assurance 1645SQCIF sub quarter common intermediate format 1646SQL Structured Query Language 1647SRAM static random access memory 1648SRC sample rate conversion 1649SRP SCSI RDMA protocol 1650SRR shaped round robin 1651SRTP Secure Real-time Transport Protocol 1652SS self-snoop 1653SS stack segment 1654SSA static single assignment 1655SSAP source service access point 1656SSB single-sideband modulation 1657SSB speculative store bypass 1658SSBB speculative store bypass barrier (Arm) 1659SSBD speculative store bypass disable (Intel) 1660SSC spread spectrum clock 1661SSD solid state drive 1662SSE streaming SIMD extensions 1663SSFDC solid state floppy disc card 1664SSH secure shell 1665SSI server side includes 1666SSID service set identifier 1667SSL secure sockets layer 1668SSP stack smashing protection 1669SSRF server-side request forgery 1670SSTP secure socket tunneling protocol 1671STC software thermal control 1672STD state transition diagram 1673STEK session ticket encryption key 1674STM software transactional memory 1675STOMP Streaming Text Oriented Messaging Protocol 1676STP Spanning Tree Protocol 1677STP shielded twisted pair 1678STRG spanning tree root guard 1679SUN Stanford University Network 1680SUS Single Unix Specification 1681SUT system under test 1682SVC switched virtual circuit 1683SVG scalable vector graphics 1684SVGA Super Video Graphics Array 1685SVI {switch,switched} virtual interface 1686SVM secure virtual machine 1687SVM support vector machine 1688SVR System V Release 1689SVS Separate Virtual Space 1690SWF Shockwave Flash 1691SWIG simplified wrapper [and] interface generator 1692SYR symbol timing recovery 1693TA test assertion 1694TA transmitter address 1695TAA transactional asynchronous abort (Intel) 1696TACACS terminal access controller access-control system 1697TAI international atomic time 1698TAO track at once 1699TAOCP The Art of Computer Programming 1700TAP Test Anything Protocol 1701TAS test and set 1702TB terabyte 1703TBNF transitional backus-naur form 1704TCB trace capture buffer 1705TCB trusted computing base 1706TCC thermal control circuit 1707TCL tool command language 1708TCP Transmission Control Protocol 1709TCQ tagged command queueing 1710TDC time [to] digital converter 1711TDD test-driven development 1712TDD time division duplex 1713TDM time division multiplexing 1714TDMA time division multiple access 1715TDOA time difference of arrival 1716TDP thermal design {point,power} 1717TDR time-domain reflectometry 1718TECO Text Editor and Corrector 1719TEE Trusted Execution Environment 1720TFT thin film transistor 1721TFTP Trivial File Transfer Protocol 1722TIAS try it and see 1723TIFF tagged image file format 1724TITS try it to see 1725TK temporal key 1726TKIP Temporal Key Integrity Protocol 1727TLA top level aggregator 1728TLB translation lookaside buffer 1729TLD top level domain 1730TLER time-limited error recovery 1731TLI transport layer interface 1732TLS thread local storage 1733TLS transport layer security 1734TM Turing machine 1735TM thermal monitor 1736TMDS transition minimized differential signaling 1737TMG transmogrifier 1738TMO timeout 1739TOD time of day 1740TOE TCP offload engine 1741TOFU trust on first use 1742TOS terms of service 1743TOS trusted operating system 1744TOS type of service 1745TOTP time-based one time password 1746TP transaction processing 1747TPI tracks per inch 1748TPM transactions per minute 1749TPM trusted platform module 1750TPR task priority register 1751TPS transactions per second 1752TPS transmission parameters signaling 1753TR task register 1754TR token ring 1755TRL timing recovery loop 1756TRNG true random number generator 1757TS terminal services 1758TS time series 1759TS time stamp 1760TS transport stream 1761TSAN Thread Sanitizer 1762TSC time stamp counter 1763TSD time stamp disable 1764TSDB time series database 1765TSL test, set, lock 1766TSO TCP segmentation offload 1767TSO Total Store Ordering 1768TSO time sharing option 1769TSP Time-Stamp Protocol 1770TSP Tunnel Setup Protocol 1771TSP time synchronization protocol 1772TSP traveling salesman problem 1773TSS task state segment 1774TSV tab-separated values 1775TSX transaction synchronization extensions (Intel) 1776TTL time to live 1777TTL transistor-transistor logic 1778TTM translation table maps 1779TTY teletype 1780TU translation unit 1781TUI {terminal,text-based,textual} user interface 1782TX {transmit out,transmitter} 1783TXG transaction group 1784TZ time zone 1785UAC user {access,account} control 1786UAF use-after-free 1787UART universal asynchronous receiver/transmitter 1788UAT user acceptance testing 1789UB undefined behavior 1790UBSAN Undefined Behavior Sanitizer 1791UC uncacheable 1792UCS unified computing system 1793UCS uniform-cost search 1794UCS universal coded character set 1795UDI uniform driver interface 1796UDMA ultra DMA 1797UDO ultra density optical 1798UDP User Datagram Protocol 1799UDS Unix Domain Socket 1800UEFI unified extensible firmware interface 1801UFO UDP fragmentation offload 1802UFS Unix File System 1803UGA universal graphics adapter 1804UI unit interval 1805UI user interface 1806UICC universal integrated circuit card 1807UID unique identifier 1808UID user identifier 1809UL upload 1810UMA uniform memory access 1811UMA upper memory area 1812UMB upper memory block 1813UML unified modeling language 1814UMPC ultra-mobile PC 1815UPNP universal plug and play 1816UPS uninterruptible power supply 1817URI uniform resource identifier 1818URL uniform resource locator 1819URN uniform resource name 1820USART universal synchronous/asynchronous receiver/transmitter 1821USB universal serial bus 1822USWC uncacheable speculative write combining 1823UT unit test 1824UTC coordinated universal time 1825UTF unicode transformation formats 1826UTP unshielded twisted pair 1827UTS UNIX time-sharing 1828UUCP Unix-to-Unix Copy Protocol 1829UUID universally unique identifier 1830UUOC useless use of cat 1831UUT unit under test 1832UX user experience 1833VA vertical alignment 1834VA virtual address 1835VA volt-ampere 1836VAX virtual address extension 1837VB Visual Basic 1838VBR volume boot record 1839VCA variable-gain amplifier 1840VCC common collector voltage 1841VCCP virtual chassis control protocol 1842VCF voltage-controlled filter 1843VCM virtual channel memory 1844VCO voltage-controlled oscillator 1845VCP virtual chassis port 1846VCS version control system 1847VDP vulnerability disclosure policy 1848VDPAU Video Decode and Presentation API for Unix 1849VES virtual execution system 1850VESA Video Electronics Standards Association 1851VFO variable-frequency oscillator 1852VFS virtual file system 1853VG volume group 1854VGA Video Graphics Array 1855VHD virtual hard disk 1856VHDCI very high density cable interconnect 1857VID {VLAN,voltage level} identifier 1858VIM Vi IMproved 1859VIPT virtually indexed, physically tagged 1860VIVT virtually indexed, virtually tagged 1861VLAN virtual local area network 1862VLD variable-length decoding 1863VLIW very long instruction word 1864VLSI very large scale integration 1865VLSM variable length subnet mask 1866VM virtual {machine,memory} 1867VME virtual mode extension 1868VMX vector multimedia extensions 1869VMX virtual machine extensions 1870VNC virtual network computing 1871VNI virtual network identifier 1872VOD video on demand 1873VPD vital product data 1874VPN virtual private network 1875VPWS virtual private wire service 1876VR virtual reality 1877VRAM video random access memory 1878VRF virtual routing and forwarding 1879VRM voltage regulator module 1880VROC Virtual RAID On CPU 1881VRRP Virtual Router Redundancy Protocol 1882VSTP VLAN Spanning Tree Protocol 1883VTEP VXLAN tunnel endpoint 1884VTP VLAN Trunking Protocol 1885VXFS Veritas file system 1886VXLAN virtual extensible LAN 1887VXVM Veritas volume manager 1888W watt 1889W3C World Wide Web Consortium 1890WAFL write anywhere file layout 1891WAMP Web Application Messaging Protocol 1892WAN wide area network 1893WAP Wireless Application Protocol 1894WAP wireless access point 1895WDDM Windows Display Driver Model 1896WDM Wavelength Division Multiplexing 1897WDM Windows Driver Model 1898WDT watchdog timer 1899WEP Wired Equivalent Privacy 1900WFI wait for interrupt 1901WFQ weighted fair queuing 1902WH write hit 1903WHEA Windows hardware error architecture 1904WIFI wireless fidelity 1905WLAN wireless local area network 1906WM write miss 1907WMF Windows meta file 1908WMI Windows Management Instrumentation 1909WOL Wake-on-LAN 1910WOM Wake-on-Modem 1911WOR Wake-on-Ring 1912WORM write once read many 1913WP WordPerfect 1914WP word processor 1915WP write protect 1916WPA Wi-Fi Protected Access 1917WPA2 Wi-Fi Protected Access II 1918WPAD web proxy auto-discovery protocol 1919WPS Wi-Fi Protected Setup 1920WRAM window random access memory 1921WS web services 1922WTC write through caching 1923WTD weighted tail drop 1924WWAN wireless wide area network 1925WWW world wide web 1926WYSIAYG what you see is all you get 1927WYSIWYG what you see is what you get 1928XBAR crossbar 1929XDMCP X Display Manager control protocol 1930XER XML encoding rules 1931XGA Extended Graphics Array 1932XHR XMLHttpRequest 1933XIP execute in place 1934XML Extensible Markup Language 1935XNA XNA's not acronymed 1936XNS Xerox network systems 1937XOR exclusive or 1938XP extreme programming 1939XSI X/Open System Interface 1940XSL extensible stylesheet language 1941XSLT extensible stylesheet language transformations 1942XSS cross site scripting 1943XT extended technology 1944XTACACS extended terminal access controller access-control system 1945XTI X/Open transport interface 1946XUL XML user interface language 1947YACC yet another compiler compiler 1948YAML YAML ain't markup language 1949YANG yet another next generation 1950YAWPFAPR you are welcome; please file a problem report 1951YP Yellow Pages 1952YTD year to date 1953ZAP ZFS attribute processor 1954ZBR zone bit recording 1955ZFOD zero-filled on demand 1956ZFS zettabyte file system 1957ZIF zero insertion force 1958ZIFS zero insertion force socket 1959ZIL ZFS intent log 1960ZMA zone multicast address 1961ZOI zero one infinity 1962ZOI zone of influence 1963ZPL ZFS Posix layer 1964ZVOL ZFS Volume 1965