acronyms.comp revision 1.387
1$NetBSD: acronyms.comp,v 1.387 2024/01/23 15:58:17 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 734HSM hardware security module 735HSM hierarchical storage management 736HSRP hot standby router protocol 737HT hyper-threading 738HTC hardware thermal control 739HTCC high temperature co-fired ceramic 740HTML HyperText Markup Language 741HTT hyper-threading technology 742HTTP Hypertext Transfer Protocol 743HTTPS Hypertext Transfer Protocol Secure 744HVDS High-Voltage Differential Signaling 745HVM hardware virtual machine 746HWASAN Hardware-assisted Address Sanitizer 747HZ Hertz 748I2O intelligent input/output 749IA information assurance 750IAAS infrastructure as a service 751IAB Internet Architecture Board 752IANA Internet Assigned Numbers Authority 753IBC iterated block cipher 754IBM International Business Machines 755IBPI international blinking pattern interpretation 756IBS instruction based sampling 757IBSS independent basic service set 758IBT indirect branch tracking 759IC integrated circuit 760ICA independent computer architecture 761ICACLS integrity control access control lists 762ICB Internet Citizen's Band 763ICE in-circuit emulator 764ICE internal compiler error 765ICH I/O controller hub 766ICMP Internet Control Message Protocol 767ICT information and communications technology 768ICW initialization command word 769IDA Intel dynamic acceleration 770IDCMP Intuition direct communication message port 771IDCT inverse discrete cosine transform 772IDE integrated development environment 773IDE integrated drive electronics 774IDPS intrusion detection [and] prevention system 775IDRP inter-domain routing protocol 776IDS intrusion detection system 777IDT interrupt descriptor table 778IE Internet Explorer 779IEC International Electrotechnical Commission 780IEEE Institute of Electrical and Electronics Engineers 781IESG Internet Engineering Steering Group 782IETF Internet Engineering Task Force 783IF intermediate frequency 784IFCM isochronous flow control mode 785IFF Interchange File Format 786IFS internal field separator 787IGD Internet gateway device 788IGMP Internet Group Management Protocol 789IGP interior gateway protocol 790IHV independent hardware vendor 791IKE Internet key exchange 792IKM input keying material 793ILM internal loopback mode 794ILOM integrated lights-out management 795ILP instruction level parallelism 796IM instant messaging 797IMAP Internet Message Access Protocol 798IMC integrated memory controller 799IMCR interrupt mode configuration register 800IME input method editor 801IMR interrupt mask register 802IMS information management system 803IMSI international mobile subscriber identity 804INCITS InterNational Committee for Information Technology Standards 805INODE index node 806IO input/output 807IOCTL input/output control 808IOM input/output managers 809IOMMU input/output memory management unit 810IOT Internet of Things 811IP Internet Protocol 812IP intellectual property 813IPC instructions per cycle 814IPC interprocess communication 815IPCF interprocess communication facility 816IPE integrated programming environment 817IPI intelligent peripheral interface 818IPI interprocessor interrupt 819IPL Initial Program Load 820IPL Interrupt Priority Level 821IPMB Intelligent Platform Management Bus 822IPMI Intelligent Platform Management Interface 823IPNG Internet Protocol, Next Generation 824IPS in-plane switching 825IPS intrusion prevention system 826IPSEC Internet Protocol Security 827IR intermediate representation 828IRC Internet Relay Chat 829IRDA infrared data association 830IRDP ICMP Router Discovery Protocol 831IRQ interrupt request 832IRQL interrupt request level 833IRR interrupt request register 834IRTF Internet Research Task Force 835IS information system 836ISA industry standard architecture 837ISA instruction set architecture 838ISB instruction synchronization barrier (Arm) 839ISDN integrated services digital network 840ISE instant secure erase 841ISI inter-symbol interference 842ISL initial system load 843ISM industrial, scientific, [and] medical 844ISMS information system management system 845ISN initial serial number 846ISO International Standards Organization 847ISOC Internet Society 848ISP Internet service provider 849ISR in-service register 850ISR interrupt service routine 851IST internal spanning tree 852IST interrupt stack table 853ISV independent software vendor 854IT information technology 855ITB Intel Turbo Boost 856ITIL information technology infrastructure library 857ITP in-target probe 858ITSM IT service management 859IV initialization vector 860IVT interrupt vector table 861JBOD just a bunch of disks 862JCL Job Control Language 863JFET junction [gate] field-effect transistor 864JIT just in time 865JPEG Joint Photographic Experts Group 866JRE Java Runtime Environment 867JSON JavaScript Object Notation 868JTAG joint test action group 869KASAN Kernel Address Sanitizer 870KASLR kernel address space layout randomization 871KB keyboard 872KB kilobyte 873KBD keyboard 874KBD kilobaud 875KCS keyboard controller style 876KEK key encryption key 877KEM key encapsulation mechanism 878KLOC thousand lines of code 879KMS kernel-mode setting 880KPI kernel programming interface 881KVA kernel virtual address 882KVM kernel virtual machine 883KVM kernel virtual memory 884KVM keyboard, video, [and] mouse 885L2CAP link layer control and adaptation protocol 886LAG link aggregation group 887LAMP Linux Apache MySQL {Perl,PHP,Python} 888LAN local area network 889LAPIC local advanced programmable interrupt controller 890LAR load access rights 891LBA logical block addressing 892LBNF labeled backus-naur form 893LBS location-based service 894LCD liquid crystal display 895LCP link control protocol 896LDA local delivery agent 897LDAP Lightweight Directory Access Protocol 898LDR light-dependent resistor 899LDT local descriptor table 900LE logical extent 901LED light emitting diode 902LELL low energy link layer 903LER label edge router 904LF line feed 905LF low frequency 906LFM lowest frequency mode 907LFN long file names 908LFO low-frequency oscillation 909LFS log-structured file system 910LFU least frequently used 911LHP loop heat pipe 912LIF logical interchange format 913LIFO last in, first out 914LILO LInux LOader 915LILO last in, last out 916LINT local interrupt 917LIR local Internet registry 918LISP LISt Processor 919LISP Locator/ID Separation Protocol 920LKM {Linux,loadable} kernel module 921LKML Linux kernel mailing list 922LL load linked 923LL/SC load linked/store conditional 924LLC logical link control 925LLD low-level design 926LLDD low-level design document 927LLDP link layer discovery protocol 928LLF low level format 929LLMNR link-local multicast name resolution 930LLVM Low Level Virtual Machine 931LM long mode 932LMCE local machine check exception 933LMI local management interface 934LMM link management mode 935LMP link management protocol 936LNO loop nest optimization 937LOC lines of code 938LOM lights-out management 939LPC low pin count 940LPE Linux performance events 941LPS local positioning system 942LRC longitudinal redundancy check 943LRM left-to-right mark 944LRO Large Receive Offload 945LRO left-to-right override 946LRU least recently used 947LS link state 948LSAN Leak Sanitizer 949LSB Linux standards base 950LSB least significant {bit,byte} 951LSI large scale integration 952LSL load segment limit 953LSM log structured merge 954LSN Large Scale NAT 955LSN log sequence number 956LSO large send offload 957LSR label switch router 958LTCC low temperature co-fired ceramic 959LTO linear tape-open 960LTO link time optimization 961LTR left to right 962LTR letter(-sized paper) 963LTR load task register 964LTS long term support 965LUA Lua Uppercase Accident 966LUN logical unit number 967LV logical volume 968LVDS Low-Voltage Differential Signaling 969LVM logical volume management 970LVT local vector table 971LWP light-weight process 972LZSS Lempel Ziv Storer Szymanski 973LZW Lempel Ziv Welch 974MAB MAC authentication bypass 975MAC mandatory access control 976MAC message authentication {check,code} 977MAC {media,medium} access control 978MADT multiple APIC descriptor table 979MAMR microwave-assisted magnetic recording 980MB megabyte 981MBA multi-boot agent 982MBR master boot record 983MBS megabits per second 984MC memory controller 985MCA MicroChannel architecture 986MCA machine check architecture 987MCC multiversion concurrency control 988MCE machine check exception 989MCGA Multi-Color Graphics Array 990MCH memory controller hub 991MCLAG multi-chassis link aggregation group 992MCM multi-chip module 993MCQ memory controlled queue 994MD MiniDisc 995MD machine-dependent 996MD-SAL model-driven service abstraction layer 997MDA Monochrome Display Adapter 998MDA mail delivery agent 999MDC Management Data Clock 1000MDI Medium Dependent Interface 1001MDI-X Medium Dependent Interface Crossover 1002MDIO Management Data Input/Output 1003MDMX MIPS Digital Media eXtension 1004MDRAM multibank dynamic random access memory 1005MDS microarchitectural data sampling 1006MESI modified, exclusive, shared, invalid 1007MFC Microsoft Foundation Classes 1008MFC merge from current 1009MFM modified frequency modulation 1010MFU most frequently used 1011MGCP media gateway control protocol 1012MHU message handling unit 1013MI machine interface 1014MI machine-independent 1015MIB management information base 1016MIC message integrity {check,code} 1017MID mobile Internet device 1018MIDI musical instrument digital interface 1019MIF management information format 1020MII media independent interface 1021MIM man in the middle 1022MIMD multiple instruction, multiple data 1023MIME Multipurpose Internet Mail Extensions 1024MIMO multiple input multiple output 1025MIPS Microprocessor without Interlocked Pipeline Stages 1026MIPS million instructions per second 1027MISD multiple instruction, single data 1028MIT Massachusetts Institute of Technology 1029MITM man in the middle 1030ML machine language 1031ML machine learning 1032ML mailing list 1033ML markup language 1034ML maximum likelihood 1035ML-KEM module-lattice based key-encapsulation mechanism 1036MLAG multi-chassis link aggregation group 1037MLC multi-level cell 1038MLD multicast listener discovery 1039MLHP micro loop heat pipe 1040MLIR multi-level intermediate representation 1041MLO MMC loader 1042MMC multi-media card 1043MMF multi-mode fiber 1044MMIC monolithic microwave integrated circuit 1045MMIO memory mapped input/output 1046MMORPG massive multiplayer online role playing game 1047MMRP multiple MAC registration protocol 1048MMU memory management unit 1049MMX matrix math extension 1050MMX multimedia extension 1051MMX multiple math extension 1052MO magneto-optical 1053MOESI modified, owned, exclusive, shared, invalid 1054MOF maximum operating frequency 1055MOSFET metal-oxide-semiconductor field-effect transistor 1056MOSI modified, owned, shared, invalid 1057MP multi-platform 1058MP multiplayer 1059MP {multiprocessing,multiprocessor} 1060MPEG moving picture experts group 1061MPI message passing interface 1062MPLS Multiprotocol Label Switching 1063MPP massively parallel processor 1064MPS memory pool system 1065MPS multiprocessor specification 1066MQTT Message Queuing Telemetry Transport 1067MR modem ready 1068MRO method resolution order 1069MRP multiple registration protocol 1070MRU most recently used 1071MS Microsoft 1072MSAN Memory Sanitizer 1073MSB most significant {bit,byte} 1074MSC message sequence chart 1075MSE mean square error 1076MSF minutes seconds frames 1077MSI message signaled interrupt 1078MSI modified, shared, invalid 1079MSR {machine state,model-specific} register 1080MSS maximum segment size 1081MSTP Multiple Spanning Tree Protocol 1082MT machine translation 1083MTA mail transfer agent 1084MTBF mean time between failures 1085MTP media transfer protocol 1086MTRR memory type range register 1087MTTF mean time to failure 1088MTU maximum transmission unit 1089MUA mail user agent 1090MUD multi-user domain 1091MVCC multiversion concurrency control 1092MVR multicast VLAN registration 1093MVRP multiple VLAN registration protocol 1094MWE module width encoding 1095MX mail exchange 1096NACK negative acknowledgement 1097NAK negative acknowledgement 1098NAN neighbor awareness networking 1099NAN not a number 1100NAPT Network Address Port Translation 1101NAS network attached storage 1102NAT network address translation 1103NAV network allocation vector 1104NC numerical control 1105NC-SI network controller sideband interface 1106NCO numerically-controlled oscillator 1107NCP Network Control Protocol 1108NCQ native command queuing 1109NCSI network connectivity status indicator 1110ND neighbor discovery 1111NDFA nondeterministic finite automaton 1112NDIS network driver interface specification 1113NE numeric error 1114NEWS Network extensible Window System 1115NFA nondeterministic finite automaton 1116NFC near-field communication 1117NFCI no functional change intended 1118NFS network file system 1119NFV network function virtualization 1120NHACP NABU HCCA Application Communication Protocol 1121NIA next instruction address 1122NIC network information center 1123NIC network interface card 1124NIDS network intrusion detection system 1125NIP network interface protocol 1126NIPS network intrusion prevention system 1127NIS network information service 1128NIST National Institute of Standards and Technology 1129NLS native language support 1130NMI non-maskable interrupt 1131NMR nonce-misuse resistance 1132NNTP Network News Transfer Protocol 1133NOC network operations center 1134NOP no operation 1135NOS network operating system 1136NP nondeterministic polynomial time 1137NRND not recommended for new designs 1138NRZ non-return to zero 1139NSA National Security Agency 1140NSA nation-state adversary 1141NSA no such agency 1142NTA negative trust anchor 1143NTM non-deterministic Turing machine 1144NTP Network Time Protocol 1145NUMA non-uniform memory access 1146NURBS non-uniform rational basis spline 1147NVD National Vulnerability Database 1148NVMM NetBSD Virtual Machine Monitor 1149NVMM non-volatile main memory 1150NVRAM non-volatile random access memory 1151NW not write-through 1152NX no execute 1153OAEP optimal asymmetric encryption padding 1154OAM operations, administration, and {management,maintenance} 1155OBO off by one 1156OBOE off by one error 1157OCL object constraint language 1158OCR optical character recognition 1159ODBC Open Database Connectivity 1160ODCM on-demand clock modulation 1161ODE offline device environment 1162ODI open data-link interface 1163ODM object data manager 1164ODMR on-demand mail relay 1165ODT on-die termination 1166OEM original equipment manufacturer 1167OFB output feedback 1168OFDM orthogonal frequency division multiplexing 1169OFET organic field-effect transistor 1170OLAP online analytical processing 1171OLE object linking and embedding 1172OLTP online transaction processing 1173ONCE on-{chip,circuit} emulation 1174ONFI open nand flash interface 1175OO OpenOffice 1176OO object oriented 1177OOB out of band 1178OOE out of order execution 1179OOM out of memory 1180OOO OpenOffice.org 1181OOP object oriented programming 1182OOPS object oriented programming systems 1183OOSE object oriented software engineering 1184OPM operations per minute 1185OPS operations per second 1186OQL Object Query Language 1187ORB object request broker 1188ORM object-relational mapping 1189OS operating system 1190OSD object-based storage device 1191OSD open source definition 1192OSF open software foundation 1193OSI Open Source Initiative 1194OSI open systems interconnection 1195OSPF open shortest path first 1196OSPM OS power management 1197OSS open sound system 1198OSS open source software 1199OSVW operating system visible workarounds 1200OTP one time password 1201OTP open telecom platform 1202OU organizational unit 1203OUI organizationally unique identifier 1204OWASP Open Web Application Security Project 1205OWL Web Ontology Language 1206P2P PCI to PCI 1207P2P peer to peer 1208PA phase accumulator 1209PA physical address 1210PAAS platform as a service 1211PAC phase-amplitude converter 1212PAE physical address extension 1213PAGP port aggregation protocol 1214PAL phase alternating line 1215PAL programmable array logic 1216PAM pluggable authentication modules 1217PAM pulse amplitude modulation 1218PAP password authentication protocol 1219PAT page attribute table 1220PAT port address translation 1221PATA parallel ATA 1222PAX portable archive exchange 1223PBE pending break encoding 1224PBE programming by example 1225PBR partition boot record 1226PBX private branch exchange 1227PC personal computer 1228PC program counter 1229PCB Protocol Control Block 1230PCB printed circuit board 1231PCB process control block 1232PCBC propagating cipher block chaining 1233PCC Portable C Compiler 1234PCD page-level cache disable 1235PCE path computation element 1236PCE performance-monitor counter enable 1237PCEP Path Computation Element Protocol 1238PCH platform controller hub 1239PCI peripheral component interconnect 1240PCM phase change memory 1241PCM pulse code modulation 1242PCMCIA Personal Computer Memory Card International Association 1243PCP Port Control Protocol 1244PD public domain 1245PDA personal digital assistant 1246PDA pushdown automaton 1247PDAG propositional directed acyclic graph 1248PDB power distribution board 1249PDF portable document format 1250PDM pulse-duration modulation 1251PDN pull-down network 1252PDP page {descriptor,directory} page 1253PDS product data sheet 1254PDU protocol data unit 1255PE portable executable 1256PE protection enable 1257PE provider edge 1258PEAP Protected EAP 1259PECI platform environment control interface 1260PED PIN Entry Device 1261PEP protocol extension protocol 1262PER packed encoding rules 1263PFS perfect forward secrecy 1264PGAS partitioned global address space 1265PGE page global enable 1266PGO profile guided optimization 1267PGP Pretty Good Privacy 1268PHB PCI host bridge 1269PHP PHP: Hypertext Preprocessor 1270PIC performance instrumentation counters 1271PIC position independent code 1272PIC programmable interrupt controller 1273PICNIC problem in chair, not in computer 1274PID process id 1275PIE position independent executable 1276PIL Priority Interrupt Level 1277PIM personal information manager 1278PIM platform-independent model 1279PIO programmed input/output 1280PIPT physically indexed, physically tagged 1281PIQ prefetch input queue 1282PIR private information retrieval 1283PIT programmable interrupt timer 1284PIV personal identity verification 1285PIX Private Internet eXchange 1286PKCS public-key cryptography standards 1287PKI public key infrastructure 1288PLC programmable logic controller 1289PLD programmable logic device 1290PLL phase locked loop 1291PLRU pseudo LRU 1292PLT procedure linkage table 1293PLTM package level thermal management 1294PM power management 1295PM {phase,pulse} modulation 1296PMC performance monitoring counters 1297PME power management event 1298PMEG page map entry group 1299PMI performance monitoring infrastructure 1300PMI platform management interrupt 1301PMIC power management integrated circuit 1302PMIO port-mapped input/output 1303PMT photo-multiplier tube 1304PMU performance monitoring units 1305PMU power management unit 1306PNG portable network graphics 1307PNP plug and play 1308POE power over ethernet 1309POF probability of failure 1310POP Post Office Protocol 1311POP power on password 1312POR plan of record 1313POSIX Portable Operating System Interface [for Unix] 1314POST power on self test 1315POTS plain old telephone system 1316POWER Performance Optimization With Enhanced RISC 1317POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1318PP pair programming 1319PPB PCI [to] PCI bridge 1320PPC Power Performance Computing 1321PPC PowerPC 1322PPI pixels per inch 1323PPM pages per minute 1324PPP Point-to-Point Protocol 1325PPPOA Point-to-Point Protocol over ATM 1326PPPOE Point-to-Point Protocol over Ethernet 1327PPR processor programming reference 1328PPT powerpoint 1329PPT punched paper tape 1330PPU physics processing unit 1331PQC post-quantum cryptography 1332PRAM Parameter RAM 1333PRBS pseudorandom bit sequence 1334PRF pseudorandom function [family] 1335PRG pseudorandom generator 1336PRML partial response, maximum likelihood 1337PRN pseudorandom {noise,number} 1338PRNG pseudorandom number generator 1339PROM programmable read only memory 1340PRP pseudorandom permutation 1341PRU Programmable Realtime Unit 1342PS PostScript 1343PSD power spectral density 1344PSE page size extensions 1345PSK phase shift keying 1346PSK pre-shared key 1347PSTN public switched telephone network 1348PSW program status word 1349PTE page table entry 1350PTLA pseudo top level aggregator 1351PTP page table page 1352PTV perceived target value 1353PU processing unit 1354PUC personal unblocking code 1355PUN physical unit number 1356PV physical volume 1357PVC permanent virtual circuit 1358PVG physical volume group 1359PVI protected-mode virtual interrupt 1360PVRST Per-VLAN rapid spanning tree 1361PVST Per-VLAN Spanning Tree 1362PWM pulse width modulation 1363PXE preboot execution environment 1364QA quality assurance 1365QAM quadrature amplitude modulation 1366QAM quality assurance management 1367QBE query by example 1368QC quality control 1369QCIF quarter common intermediate format 1370QDI quasi delay insensitive 1371QOI quality of implementation 1372QOI quick order interface 1373QOS quality of service 1374QUIC Quick UDP Internet Connections 1375QVL qualified vendor list 1376R/O read only 1377R/W read/write 1378RA receiver address 1379RA remote assistance 1380RA resource affinity 1381RA router advertisement 1382RAD rapid application development 1383RADIUS remote authentication dial-in user service 1384RAID redundant array of {independent,inexpensive} disks 1385RAII resource acquisition is initialization 1386RAM random access memory 1387RAS reliability, availability and serviceability 1388RAS remote access service 1389RAS restartable atomic sequence 1390RAS row address strobe 1391RAT register allocation table 1392RAT remote access trojan 1393RBF radial basis function 1394RBL real-time blackhole list 1395RBL reputation block list 1396RBNF routing backus-naur form 1397RBT red-black tree 1398RC release candidate 1399RC remote control 1400RC run commands 1401RCS Revision Control System 1402RCU read, copy, update 1403RDB Rigid Disk Block 1404RDBMS relational database management system 1405RDF Resource Description Framework 1406RDM relational data model 1407RDMA remote direct memory access 1408RDP remote desktop protocol 1409RDRAM Rambus DRAM 1410RE regular expression 1411REPL read, evaluate, print, loop 1412REST representational state transfer 1413RF radio frequency 1414RFB remote frame buffer 1415RFI radio frequency interference 1416RFO request for ownership 1417RFU reserved for future use 1418RGB red green blue 1419RGBA red green blue alpha 1420RGMII reduced gigabit media independent interface 1421RH read hit 1422RHEL Red Hat Enterprise Linux 1423RHL Red Hat Linux 1424RIB routing information base 1425RIFF Resource Interchange File Format 1426RIP Raster Image Processor 1427RIP Routing Information Protocol 1428RIR regional Internet registry 1429RISC reduced instruction set {computer,computing} 1430RKM ROM Kernel Manual 1431RLE run length encoding 1432RLL run length limited 1433RLO right-to-left override 1434RM read miss 1435RMCP Remote Management Control Protocol 1436RMI remote method invocation 1437RMO Relaxed Memory Ordering 1438RMPM rapid memory power management 1439RMS root mean square 1440RMW read, modify, write 1441RNG random number generator 1442ROA route origin authorization 1443ROM read only memory 1444ROP return-oriented programming 1445RPC remote procedure call 1446RPG Report Program Generator 1447RPKI resource PKI 1448RPL requested privilege level 1449RPM revolutions per minute 1450RPN reverse Polish notation 1451RPVST Rapid Per-VLAN Spanning Tree 1452RR random replacement 1453RR round robin 1454RS relay station 1455RSA Rivest, Shamir, [and] Adleman 1456RSC Receive Segment Coalescing 1457RSIP Realm Specific IP 1458RSN Robust Secure Network 1459RSS Receive Side Scaling 1460RSS really simple syndication 1461RSS residual sum of squares 1462RSTP Rapid Spanning Tree Protocol 1463RT real time 1464RTC real time clock 1465RTC real time computing 1466RTF rich text format 1467RTL register transfer language 1468RTL resistor-transistor logic 1469RTL right to left 1470RTM restricted transactional memory (Intel) 1471RTOS real time operating system 1472RTP Real-time Transport Protocol 1473RTS request to send 1474RTT round trip time 1475RTTI run-time type information 1476RUP rational unified process 1477RW Rabin-Williams 1478RWM read-write memory 1479RX {receive,receiver} 1480S/PDIF Sony/Philips Digital Interface Format 1481SA security advisory 1482SA security association 1483SA source address 1484SA structured analysis 1485SAAS software as a service 1486SABRE Semi-automated business research environment 1487SACD super audio compact disc 1488SAD security association database 1489SAF-TE SCSI accessed fault-tolerant enclosure 1490SAGE Semi-automated ground environment 1491SAL {service,system} abstraction layer 1492SAM serial access memory 1493SAM sum addressed memory 1494SAML security assertion markup language 1495SAN storage area network 1496SAP service access point 1497SAPIC streamlined advanced programmable interrupt controller 1498SASD structured analysis, structured design 1499SASI Shugart Associates System Interface 1500SASL simple authentication [and] security layer 1501SATA serial advanced technology attachment 1502SAX simple API for XML 1503SB sound blaster 1504SBSA server base system architecture 1505SBU standard build unit 1506SC store conditional 1507SCA source code analyzer 1508SCADA supervisory control and data acquisition 1509SCC single chip cloud 1510SCC source code control 1511SCCP skinny call control protocol 1512SCCS Source Code Control System 1513SCI scalable coherent interface 1514SCI system control interrupt 1515SCIM smart common input method 1516SCM software configuration management 1517SCM source code management 1518SCM storage-class memory 1519SCO synchronous connection orientated 1520SCP secure copy 1521SCP system control processor 1522SCPI system control and power interface 1523SCSI Small Computer System Interface 1524SCTP Stream Control Transmission Protocol 1525SDDC software defined data center 1526SDEI software delegated exception interface 1527SDI symbol deinterleave 1528SDK software development kit 1529SDL Simple Declarative Language 1530SDL Simple Direct-media Layer 1531SDLC {software,system,systems} development life cycle 1532SDN software defined networking 1533SDP Session Description Protocol 1534SDR software defined radio 1535SDRAM synchronous dynamic random access memory 1536SDS software defined storage 1537SDT syntax-directed translation 1538SEA synchronous external abort 1539SED self-encrypting drive 1540SED stream editor 1541SEGV segmentation violation 1542SEMB serial ATA enclosure management bridge 1543SEO search engine optimization 1544SES SCSI enclosure services 1545SFC sequential function chart 1546SFI simple firmware interface 1547SFI software fault isolation 1548SFP small form-factor pluggable 1549SFTP SSH File Transfer Protocol 1550SFTP Serial File Transfer Protocol 1551SFTP Simple File Transfer Protocol 1552SGI Silicon Graphics, Inc 1553SGI software generated interrupt 1554SGMII serial gigabit media independent interface 1555SGPIO serial general purpose input/output 1556SGRAM synchronous graphics random access memory 1557SHA secure hash algorithm 1558SICP structure and interpretation of computer programs 1559SIDH supersingular isogeny Diffie-Hellman 1560SIEM security information and event management 1561SIF source input format 1562SIFS short inter-frame space 1563SIM subscriber identity module 1564SIMD single instruction, multiple data 1565SIMM single inline memory module 1566SIP Session Initiation Protocol 1567SIR signal-to-interference ratio 1568SIR slow infrared 1569SIRT security incident response team 1570SISD single instruction, single data 1571SIV synthetic intialization vector 1572SLAAC stateless address auto-configuration 1573SLC single-level cell 1574SLDRAM synchronous-link dynamic random access memory 1575SLED single large expensive disk 1576SLI scalable link interface 1577SLI scan-line interleave 1578SLIC system license internal code 1579SLOC source lines of code 1580SLRU segmented LRU 1581SMA smart memory access 1582SMAF system management action field 1583SMAP Simple Mail Access Protocol 1584SMAP supervisor mode access prevention 1585SMART self-monitoring analysis and reporting technology 1586SMB Server Message Block 1587SMB system management bus 1588SMBIOS System Management BIOS 1589SMC system management controller 1590SMD storage module device 1591SMEP supervisor mode execution protection 1592SMF single mode fiber 1593SMI structure of management information 1594SMI system management interrupt 1595SMM system management mode 1596SMP serial management protocol 1597SMP symmetric multiprocessing 1598SMR shingled magnetic recording 1599SMR state machine replication 1600SMT simultaneous multithreading 1601SMTP Simple Mail Transfer Protocol 1602SMU system management unit 1603SNA systems network architecture 1604SNAP Sub-Network Access Protocol 1605SNIA Storage Networking Industry Association 1606SNMP Simple Network Management Protocol 1607SNR signal-to-noise ratio 1608SOA service oriented architecture 1609SOAP Simple Object Access Protocol 1610SOC security operations center 1611SOC system on chip 1612SOF start of frame 1613SOH start of header 1614SOHO small office/home office 1615SOL serial over LAN 1616SOM system on module 1617SP service pack 1618SP stack pointer 1619SPA storage pool allocator 1620SPAN switched port analyzer 1621SPARC scalable processor architecture 1622SPARQL SPARQL Protocol and RDF Query Language 1623SPD security policy database 1624SPD serial presence detect 1625SPDIF Sony/Philips digital interface format 1626SPI serial peripheral interface 1627SPI stateful packet inspection 1628SPIR standard portable intermediate representation 1629SPL secondary program loader 1630SPL spinlock 1631SPL system interrupt priority level 1632SPMD single process, multiple data 1633SPR special purpose register 1634SPT sectors per track 1635SQA software quality assurance 1636SQCIF sub quarter common intermediate format 1637SQL Structured Query Language 1638SRAM static random access memory 1639SRC sample rate conversion 1640SRP SCSI RDMA protocol 1641SRR shaped round robin 1642SRTP Secure Real-time Transport Protocol 1643SS self-snoop 1644SS stack segment 1645SSA static single assignment 1646SSAP source service access point 1647SSB single-sideband modulation 1648SSB speculative store bypass 1649SSBB speculative store bypass barrier (Arm) 1650SSBD speculative store bypass disable (Intel) 1651SSC spread spectrum clock 1652SSD solid state drive 1653SSE streaming SIMD extensions 1654SSFDC solid state floppy disc card 1655SSH secure shell 1656SSI server side includes 1657SSID service set identifier 1658SSL secure sockets layer 1659SSP stack smashing protection 1660SSRF server-side request forgery 1661SSTP secure socket tunneling protocol 1662STC software thermal control 1663STD state transition diagram 1664STEK session ticket encryption key 1665STM software transactional memory 1666STOMP Streaming Text Oriented Messaging Protocol 1667STP Spanning Tree Protocol 1668STP shielded twisted pair 1669STRG spanning tree root guard 1670SUN Stanford University Network 1671SUS Single Unix Specification 1672SUT system under test 1673SVC switched virtual circuit 1674SVG scalable vector graphics 1675SVGA Super Video Graphics Array 1676SVI {switch,switched} virtual interface 1677SVM secure virtual machine 1678SVM support vector machine 1679SVR System V Release 1680SVS Separate Virtual Space 1681SWF Shockwave Flash 1682SWIG simplified wrapper [and] interface generator 1683SYR symbol timing recovery 1684TA test assertion 1685TA transmitter address 1686TAA transactional asynchronous abort (Intel) 1687TACACS terminal access controller access-control system 1688TAI international atomic time 1689TAO track at once 1690TAOCP The Art of Computer Programming 1691TAP Test Anything Protocol 1692TAS test and set 1693TB terabyte 1694TBNF transitional backus-naur form 1695TCB trace capture buffer 1696TCB trusted computing base 1697TCC thermal control circuit 1698TCL tool command language 1699TCP Transmission Control Protocol 1700TCQ tagged command queueing 1701TDC time [to] digital converter 1702TDD test-driven development 1703TDD time division duplex 1704TDM time division multiplexing 1705TDMA time division multiple access 1706TDOA time difference of arrival 1707TDP thermal design {point,power} 1708TDR time-domain reflectometry 1709TECO Text Editor and Corrector 1710TEE Trusted Execution Environment 1711TFT thin film transistor 1712TFTP Trivial File Transfer Protocol 1713TIAS try it and see 1714TIFF tagged image file format 1715TITS try it to see 1716TK temporal key 1717TKIP Temporal Key Integrity Protocol 1718TLA top level aggregator 1719TLB translation lookaside buffer 1720TLD top level domain 1721TLER time-limited error recovery 1722TLI transport layer interface 1723TLS thread local storage 1724TLS transport layer security 1725TM Turing machine 1726TM thermal monitor 1727TMDS transition minimized differential signaling 1728TMG transmogrifier 1729TMO timeout 1730TOD time of day 1731TOE TCP offload engine 1732TOFU trust on first use 1733TOS terms of service 1734TOS trusted operating system 1735TOS type of service 1736TOTP time-based one time password 1737TP transaction processing 1738TPI tracks per inch 1739TPM transactions per minute 1740TPM trusted platform module 1741TPR task priority register 1742TPS transactions per second 1743TPS transmission parameters signaling 1744TR task register 1745TR token ring 1746TRL timing recovery loop 1747TRNG true random number generator 1748TS terminal services 1749TS time series 1750TS time stamp 1751TS transport stream 1752TSAN Thread Sanitizer 1753TSC time stamp counter 1754TSD time stamp disable 1755TSDB time series database 1756TSL test, set, lock 1757TSO TCP segmentation offload 1758TSO Total Store Ordering 1759TSO time sharing option 1760TSP Time-Stamp Protocol 1761TSP Tunnel Setup Protocol 1762TSP time synchronization protocol 1763TSP traveling salesman problem 1764TSS task state segment 1765TSV tab-separated values 1766TSX transaction synchronization extensions (Intel) 1767TTL time to live 1768TTL transistor-transistor logic 1769TTM translation table maps 1770TTY teletype 1771TU translation unit 1772TUI {terminal,text-based,textual} user interface 1773TX {transmit out,transmitter} 1774TXG transaction group 1775TZ time zone 1776UAC user {access,account} control 1777UAF use-after-free 1778UART universal asynchronous receiver/transmitter 1779UAT user acceptance testing 1780UB undefined behavior 1781UBSAN Undefined Behavior Sanitizer 1782UC uncacheable 1783UCS unified computing system 1784UCS uniform-cost search 1785UCS universal coded character set 1786UDI uniform driver interface 1787UDMA ultra DMA 1788UDO ultra density optical 1789UDP User Datagram Protocol 1790UDS Unix Domain Socket 1791UEFI unified extensible firmware interface 1792UFO UDP fragmentation offload 1793UFS Unix File System 1794UGA universal graphics adapter 1795UI unit interval 1796UI user interface 1797UICC universal integrated circuit card 1798UID unique identifier 1799UID user identifier 1800UL upload 1801UMA uniform memory access 1802UMA upper memory area 1803UMB upper memory block 1804UML unified modeling language 1805UMPC ultra-mobile PC 1806UPNP universal plug and play 1807UPS uninterruptible power supply 1808URI uniform resource identifier 1809URL uniform resource locator 1810URN uniform resource name 1811USART universal synchronous/asynchronous receiver/transmitter 1812USB universal serial bus 1813USWC uncacheable speculative write combining 1814UT unit test 1815UTC coordinated universal time 1816UTF unicode transformation formats 1817UTP unshielded twisted pair 1818UTS UNIX time-sharing 1819UUCP Unix-to-Unix Copy Protocol 1820UUID universally unique identifier 1821UUOC useless use of cat 1822UUT unit under test 1823UX user experience 1824VA vertical alignment 1825VA virtual address 1826VA volt-ampere 1827VAX virtual address extension 1828VB Visual Basic 1829VBR volume boot record 1830VCA variable-gain amplifier 1831VCC common collector voltage 1832VCCP virtual chassis control protocol 1833VCF voltage-controlled filter 1834VCM virtual channel memory 1835VCO voltage-controlled oscillator 1836VCP virtual chassis port 1837VCS version control system 1838VDP vulnerability disclosure policy 1839VDPAU Video Decode and Presentation API for Unix 1840VES virtual execution system 1841VESA Video Electronics Standards Association 1842VFO variable-frequency oscillator 1843VFS virtual file system 1844VG volume group 1845VGA Video Graphics Array 1846VHDCI very high density cable interconnect 1847VID {VLAN,voltage level} identifier 1848VIM Vi IMproved 1849VIPT virtually indexed, physically tagged 1850VIVT virtually indexed, virtually tagged 1851VLAN virtual local area network 1852VLD variable-length decoding 1853VLIW very long instruction word 1854VLSI very large scale integration 1855VLSM variable length subnet mask 1856VM virtual {machine,memory} 1857VME virtual mode extension 1858VMX vector multimedia extensions 1859VMX virtual machine extensions 1860VNC virtual network computing 1861VNI virtual network identifier 1862VOD video on demand 1863VPD vital product data 1864VPN virtual private network 1865VPWS virtual private wire service 1866VR virtual reality 1867VRAM video random access memory 1868VRF virtual routing and forwarding 1869VRM voltage regulator module 1870VROC Virtual RAID On CPU 1871VRRP Virtual Router Redundancy Protocol 1872VSTP VLAN Spanning Tree Protocol 1873VTEP VXLAN tunnel endpoint 1874VTP VLAN Trunking Protocol 1875VXFS Veritas file system 1876VXLAN virtual extensible LAN 1877VXVM Veritas volume manager 1878W watt 1879W3C World Wide Web Consortium 1880WAFL write anywhere file layout 1881WAMP Web Application Messaging Protocol 1882WAN wide area network 1883WAP Wireless Application Protocol 1884WAP wireless access point 1885WDDM Windows Display Driver Model 1886WDM Windows Driver Model 1887WDT watchdog timer 1888WEP Wired Equivalent Privacy 1889WFI wait for interrupt 1890WFQ weighted fair queuing 1891WH write hit 1892WHEA Windows hardware error architecture 1893WIFI wireless fidelity 1894WLAN wireless local area network 1895WM write miss 1896WMF Windows meta file 1897WMI Windows Management Instrumentation 1898WOL Wake-on-LAN 1899WOM Wake-on-Modem 1900WOR Wake-on-Ring 1901WORM write once read many 1902WP WordPerfect 1903WP word processor 1904WP write protect 1905WPA Wi-Fi Protected Access 1906WPA2 Wi-Fi Protected Access II 1907WPAD web proxy auto-discovery protocol 1908WPS Wi-Fi Protected Setup 1909WRAM window random access memory 1910WS web services 1911WTC write through caching 1912WTD weighted tail drop 1913WWAN wireless wide area network 1914WWW world wide web 1915WYSIAYG what you see is all you get 1916WYSIWYG what you see is what you get 1917XBAR crossbar 1918XDMCP X Display Manager control protocol 1919XER XML encoding rules 1920XGA Extended Graphics Array 1921XHR XMLHttpRequest 1922XIP execute in place 1923XML Extensible Markup Language 1924XNA XNA's not acronymed 1925XNS Xerox network systems 1926XOR exclusive or 1927XP extreme programming 1928XSI X/Open System Interface 1929XSL extensible stylesheet language 1930XSLT extensible stylesheet language transformations 1931XSS cross site scripting 1932XT extended technology 1933XTACACS extended terminal access controller access-control system 1934XTI X/Open transport interface 1935XUL XML user interface language 1936YACC yet another compiler compiler 1937YAML YAML ain't markup language 1938YANG yet another next generation 1939YAWPFAPR you are welcome; please file a problem report 1940YP Yellow Pages 1941YTD year to date 1942ZAP ZFS attribute processor 1943ZBR zone bit recording 1944ZFOD zero-filled on demand 1945ZFS zettabyte file system 1946ZIF zero insertion force 1947ZIFS zero insertion force socket 1948ZIL ZFS intent log 1949ZMA zone multicast address 1950ZOI zero one infinity 1951ZOI zone of influence 1952ZPL ZFS Posix layer 1953ZVOL ZFS Volume 1954