acronyms.comp revision 1.399
1$NetBSD: acronyms.comp,v 1.399 2025/02/10 15:24:52 jschauma Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABE attribute-based encryption 8ABI application binary interface 9ABNF augmented backus-naur form 10ABR available bit rate 11ABRT automatic bug reporting tool 12AC alternating current 13ACI adjacent channel interferer 14ACID atomicity, consistency, isolation, durability 15ACK Amsterdam compiler kit 16ACK acknowledgement 17ACL access control list 18ACL active current loop 19ACL asynchronous connection less 20ACP auxiliary control {process,program} 21ACPI advanced configuration and power interface 22ACS access control set 23ACU automatic calling unit 24ADB Apple desktop bus 25ADC analog [to] digital converter 26ADD acronym driven development 27ADDDC adaptive double DRAM device correction 28ADO active data objects 29ADP automatic data processing 30ADPCM adaptive differential pulse code modulation 31ADS alternate data stream 32ADSL asymmetric digital subscriber line 33ADT abstract data type 34AEAD authenticated encryption with associated data 35AEDC advanced error detection and correction 36AER advanced error reporting 37AES Advanced Encryption Standard 38AFP Apple Filing Protocol 39AFS Andrew File System 40AGC automatic gain control 41AGP accelerated graphics port 42AI analog input 43AI artificial intelligence 44AL access list 45AL active link 46ALE address latch enable 47ALPN application-layer protocol negotiation 48ALS ambient light sensor 49ALSA advanced Linux sound architecture 50ALU arithmetic and logical unit 51ALUA asymmetric logical unit access 52AM access method 53AM alignment mask 54AM amplitude modulation 55AMD Advanced Micro Devices Inc 56AMDD Agile model-driven development 57AMI alternate mark inversion 58AMP asymmetric multiprocessing 59AMQP advanced message queuing protocol 60AMT active management technology 61AN Arabic number 62ANR application not responding 63ANSI American National Standards Institute 64AO analog output 65AOC add-on card 66AOL Alert-on-LAN 67AOS add or subtract 68AOT ahead of time 69AP access point 70AP application processor 71APEI ACPI platform error interface 72APFS Apple file system 73API application programming interface 74APIC advanced programmable interrupt controller 75APIPA automatic private IP addressing 76APM advanced power management 77APM application performance management 78APT advanced persistent threat 79APU accelerated processing unit 80AQM active queue management 81ARAT always running APIC timer 82ARC Advanced RISC Computing 83ARC adaptive replacement cache 84ARC automatic reference counting 85ARM Advanced RISC Machines 86ARP Address Resolution Protocol 87ARPA Advanced Research Projects Agency 88ARQ automatic repeat request 89ARR address range register 90ARU audio response unit 91AS autonomous system 92ASA Adaptive Security Appliance 93ASAN Address Sanitizer 94ASC advanced smart cache 95ASCII American Standard Code for Information Interchange 96ASD agile software development 97ASE advanced software environment 98ASF alert standard format 99ASIC application-specific integrated circuit 100ASK amplitude shift keying 101ASLR address space layout randomization 102ASN autonomous system number 103ASP active server pages 104ASP auxiliary storage pool 105ASPM active state power management 106ASQ automated software quality 107ASR Apple software restore 108ASR address space register 109AST abstract syntax tree 110AST asynchronous system trap 111AT access time 112AT advanced technology 113ATA advanced technology attachment 114ATAPI advanced technology attachment packet interface 115ATC address translation cache 116ATF ARM trusted firmware 117ATF automated testing framework 118ATM asynchronous transfer mode 119ATX advanced technology extended 120AV anti virus 121AVB audio video bridging 122AVL Adelson-Velsky-Landis 123AVX advanced vector extensions 124AWDL Apple wireless direct link 125BA byte align 126BAL basic assembly language 127BAR base address register 128BBS bulletin board system 129BCC blind carbon copy 130BCD binary coded decimal 131BCH boot console handler 132BCR byte count register 133BCS base configuration space 134BD baud 135BDD binary decision diagram 136BDI bit deinterleave 137BDUF big design up front 138BEDO burst extended data output 139BER basic encoding rules 140BER bit error {rate,ratio} 141BERT boot error record table 142BFD bidirectional forwarding detection 143BFD binary {file,format} descriptor 144BFKL big fscking kernel lock 145BFS breadth-first search 146BFT binary file transfer 147BGA ball grid array 148BGP Border Gateway Protocol 149BGPSEC BGP Security 150BIND Berkeley Internet Name Daemon 151BIOS Basic Input/Output System 152BIOS built-in operating system 153BIST built-in self-test 154BIU bus interface unit 155BKDG BIOS and kernel developer's guide 156BLAS basic linear algebra subprograms 157BLC back light control 158BLE Bluetooth low energy 159BLOB binary large object 160BM bus master 161BMC baseboard management controller 162BMIC bus master interface controller 163BMP basic multilingual plane 164BMP bitmap image file 165BN boundary neutral 166BNF Backus-Naur form 167BO binary output 168BOF beginning of file 169BOM beginning of message 170BOM byte order mark 171BP base pointer 172BP boot processor 173BPB BIOS parameter block 174BPDU bridge protocol data unit 175BPF Berkeley Packet Filter 176BPI bits per inch 177BPM business process modelling 178BPS bits per second 179BPSK binary phase shift keying 180BQP bounded-error quantum polynomial time 181BQS Berkeley quality software 182BRE basic regular expression 183BS backspace 184BS binary sequence 185BSA basic service area 186BSD Berkeley Software Distribution 187BSDP Boot Service Discovery Protocol 188BSF bit scan forward 189BSOD blue screen of death 190BSP binary space partition 191BSP board support package 192BSP bootstrap processor 193BSR bit scan reverse 194BSS basic service set 195BSS block started by symbol 196BSSID basic service set identifier 197BT BitTorrent 198BT Bluetooth 199BT bit test 200BTB branch target buffer 201BTB board-to-board 202BTC bit test [and] complement 203BTM bus transport mechanism 204BTR bit test [and] reset 205BTS bit test [and] set 206BTS bug tracking system 207BUAG big ugly ASCII graphic 208BW bandwidth 209BWM block-write mode 210CA certificate authority 211CAC cryptographic access control 212CACLS change access control lists 213CAD computer-aided design 214CAM computer assisted manufacturing 215CAM conditional access module 216CAM content addressable memory 217CAN controller area network 218CARP Common Address Redundancy Protocol 219CAS column address strobe 220CAS compare and swap 221CAS computer algebra system 222CASE computer aided software engineering 223CAU control access unit 224CAV constant angular velocity 225CBC cipher block chaining 226CBR constant bit rate 227CC carbon copy 228CCC Chaos Computer Club 229CCD charge coupled device 230CCI co-channel interferer 231CCNUMA cache-coherent non-uniform memory access 232CCTL command completion time limit 233CD cache disable 234CD compact disc 235CDDA compact disc digital audio 236CDL compiler description language 237CDMA code division multiple access 238CDN content delivery network 239CDP Cisco Discovery Protocol 240CDRAM cache dynamic random access memory 241CE customer edge 242CER canonical encoding rules 243CERT computer emergency response team 244CET control flow enforcement technology 245CF compact flash 246CFB cipher feedback 247CFG context-free grammar 248CFG control-flow graph 249CFI control-flow integrity 250CG control gate 251CGA Color Graphics Adapter 252CGI common gateway interface 253CGN Carrier-Grade NAT 254CHAP Challenge-Handshake Authentication Protocol 255CHFS chip file system 256CHS cylinder/head/sector 257CI continuous integration 258CI {common,component} interface 259CIA confidentiality, integrity, availability 260CIDR Classless Inter-Domain Routing 261CIF common intermediate format 262CIFS Common Internet File System 263CIL common intermediate language 264CIR carrier-to-interference ratio 265CIS contact image sensor 266CISC complex instruction set {computer,computing} 267CJK Chinese, Japanese, [and] Korean 268CLF common log format 269CLI command line interface 270CLI common language infrastructure 271CLR common language runtime 272CLS common language specification 273CLTT closed loop thermal throttling 274CLUT color look-up table 275CLV constant linear velocity 276CM configuration management 277CMA concert multithread architecture 278CMC certificate management over CMS 279CMC chassis management controller 280CMC corrected machine check 281CMI control {management,method} interface 282CMOS complementary metal-oxide-semiconductor 283CMP chip multi-processing 284CMS content management system 285CMS cryptographic message syntax 286CMS {configuration,content,course} management system 287CMYK cyan magenta yellow black 288CN {common,canonical} name 289CNA CVE Numbering Authority 290CNC computer numerical control 291CNR carrier-to-noise ratio 292COA change of authority 293COF current operating frequency 294COFDM coded orthogonal frequency division multiplexing 295COFF common object file format 296COM component object model 297COM computer on module 298COMA cache-only memory architecture 299CORBA common object request broker architecture 300COS class of service 301COW copy-on-write 302CP continuous pilot 303CPA chosen-plaintext attack 304CPB core performance boost 305CPC central processor complex 306CPC cpu performance counters 307CPE common phase error 308CPE common platform enumeration 309CPER common platform error record 310CPG clock pulse generator 311CPI cycles per instruction 312CPL current privilege level 313CPLD complex programmable logic device 314CPP C preprocessor 315CPS characters per second 316CPS continuation-passing style 317CPT command pass through 318CPU central processing unit 319CR carriage return 320CRC cyclic redundancy check 321CRDT conflict-free replicated data type 322CRL carrier recovery loop 323CRLF carriage return line feed 324CRQC cryptanalytically relevant quantum computer 325CRT cathode ray tube 326CRTP curiously recurring template pattern 327CRUD create, read, update, and delete 328CS cable select 329CS chip select 330CS code segment 331CS computer science 332CSDL {common,conceptual} schema definition language 333CSI channel state information 334CSI common system interface 335CSIRT computer security incident response team 336CSMA carrier sense multiple access 337CSMA/CA carrier sense multiple access with collision avoidance 338CSMA/CD carrier sense multiple access with collision detection 339CSP communicating sequential processes 340CSP constrain satisfaction problems 341CSP content security policy 342CSP cryptographic service provider 343CSPM cloud security posture management 344CSR control [and] status registers 345CSRF cross-site request forgery 346CSRG Computer Systems Research Group 347CSS cascading style sheets 348CST common spanning tree 349CSU C start up 350CSV comma-separated values 351CTF compact c type format 352CTM close to metal 353CTR counter [mode] 354CTS clear to send 355CTS common type system 356CUA common user access 357CUT coordinated universal time 358CV control voltage 359CVE common vulnerabilities and exposures 360CVS Concurrent Versions System 361CVSS Common Vulnerability Scoring System 362DA destination address 363DAA distributed application architecture 364DAAP digital audio access protocol 365DAB digital audio broadcasting 366DAC digital [to] analog converter 367DAC discretionary access control 368DAD duplicate address detection 369DAE deterministic authenticated encryption 370DANE DNS-based Authentication of Named Entities 371DAO disk at once 372DAP Directory Access Protocol 373DAT digital audio tape 374DAT dynamic acceleration technology 375DB database 376DBA database administrator 377DBA dynamic bandwidth allocation 378DBB data bus buffer 379DBC design by contract 380DBL dynamic buffer limiting 381DBMS database management system 382DBS database server 383DC data center 384DC direct current 385DCC Direct Client-to-Client 386DCC direct cable connect 387DCD data carrier detect 388DCE data control equipment 389DCE distributed computing environment 390DCIM data center infrastructure management 391DCIM digital camera images 392DCL Digital Command Language 393DCOM distributed component object model 394DCOP Desktop COmmunication Protocol 395DCS data collection systems 396DCT discrete cosine transform 397DCU data cache unit 398DDC display data channel 399DDE dynamic data exchange 400DDI device drivers interface 401DDK device driver kit 402DDL data description language 403DDR double data rate 404DDS direct digital sound 405DDWG Digital Display Working Group 406DE debugging extensions 407DE desktop environment 408DEA data encryption algorithm 409DEC Digital Equipment Corporation 410DEK data encryption key 411DEP data execution prevention 412DER distinguished encoding rules 413DES Data Encryption Standard 414DF don't fragment 415DFA deterministic finite automaton 416DFC data flow control 417DFS depth first search 418DFS distributed file system 419DFSAN Data Flow Sanitizer 420DFT diagnostic function test 421DFT discrete Fourier transform 422DFZ default-free zone 423DGEMM double precision general matrix multiply 424DGL data generation language 425DH Diffie-Hellman 426DHCP Dynamic Host Configuration Protocol 427DIA dedicated Internet access 428DIB device independent bitmap 429DIFS distributed inter-frame space 430DIMM dual inline memory module 431DIRT design in real time 432DKI driver/kernel interface 433DL diode logic 434DL discrete logarithm 435DL download 436DLCI data link connection identifier 437DLE data link escape 438DLL dynamic link library 439DLNA digital living network alliance 440DLP discrete logarithm problem 441DMA direct memory access 442DMB data memory barrier (Arm) 443DMI desktop management interface 444DMS document management system 445DMT discrete multitone modulation 446DMU data management layer 447DNARD Digital network appliance reference design 448DND drag and drop 449DNLC directory name lookup cache 450DNS Domain Name System 451DNSBL Domain Name System Block List 452DNSSEC DNS Security Extensions 453DOE distributed object environment 454DOF data over fibre 455DOH DNS over HTTPS 456DOM document object model 457DOQ DNS over QUIC 458DOS denial of service 459DOS disk operating system 460DOT DNS over TLS 461DP DisplayPort 462DPAA data path acceleration architecture 463DPC deferred procedure call 464DPCM differential pulse code modulation 465DPD dead peer detection 466DPDK data plane development kit 467DPI deep packet inspection 468DPI dots per inch 469DPL descriptor privilege level 470DPS Display PostScript 471DPST display power savings technology 472DRAAS disaster recovery as a service 473DRAM dynamic random access memory 474DRBG deterministic random bit generator 475DRI direct rendering infrastructure 476DRM digital rights management 477DRM direct rendering manager 478DRN Discovery of Network-designated Resolvers 479DRRS display refresh rate switching 480DS debug store 481DS differentiated services 482DS9000 DeathStation 9000 483DS9K DeathStation 9000 484DSA digital signature algorithm 485DSAP destination service access point 486DSB data synchronization barrier (Arm) 487DSB double-sideband modulation 488DSCP differentiated services code point 489DSDT differentiated system descriptor table 490DSF device special file 491DSL dataset and snapshot layer 492DSL digital subscriber line 493DSL domain specific language 494DSLAM digital subscriber line access multiplexer 495DSN delivery status notification 496DSO dynamic shared object 497DSP digital signal processor 498DSSS direct sequence spread spectrum 499DTB device tree blob 500DTC device tree compiler 501DTD document type definition 502DTE data terminal equipment 503DTE dumb terminal emulator 504DTL diode-transistor logic 505DTLS datagram transport layer security 506DTS device tree source 507DTS digital thermal sensor 508DUT device under test 509DVB digital video broadcasting 510DVCS distributed version control system 511DVD digital versatile disc 512DVFS dynamic voltage and frequency scaling 513DVI Digital Visual Interface 514DVI device independent 515DVR digital video recorder 516DWARF Debugging With Attributed Record Formats 517E-XER extended XML encoding rules 518EABI embedded-application binary interface 519EAI Email Address Internationalization 520EAI Enterprise Application Integration 521EAP Extensible Authentication Protocol 522EAPOL EAP over Lan 523EAV entity-attribute-value model 524EAV ethernet audio/video bridging 525EBCDIC Extended Binary Coded Decimal Interchange Code 526EBDA Extended BIOS Data Area 527EBNF extended backus-naur form 528EBR extended boot record 529EC elliptic curve 530ECC elliptic curve cryptography 531ECC error correction code 532ECDH elliptic curve Diffie-Hellman 533ECDL elliptic curve discrete logarithm 534ECDLP elliptic curve discrete logarithm problem 535ECDSA elliptic curve digital signature algorithm 536EDDSA Edwards-curve digital signature algorithm 537ECL emitter-coupled logic 538ECN explicit congestion notification 539ECP enhanced capability port 540ECS enhanced chip set 541ECS extended configuration space 542EDAC error detection and correction 543EDAT enhanced dynamic acceleration technology 544EDGE explicit data graph execution 545EDID extended display identification data 546EDO extended data out 547EDS electronical data sheet 548EDSAC electronic delay storage automatic calculator 549EDVAC electronic discrete variable automatic computer 550EEE embrace, extend, extinguish 551EEE energy efficient ethernet 552EEPROM electrically erasable programmable read only memory 553EFI extensible firmware interface 554EFL emitter follower logic 555EFM eight to fourteen modulation 556EFS extent file system 557EGA Enhanced Graphics Adapter 558EGP exterior gateway protocol 559EH extension header 560EIDE enhanced IDE 561EINJ error injection table 562EISA extended industry standard architecture 563ELF executable and linking format 564ELS entry level system 565EMACS Editor MACroS 566EMI electro-magnetic interference 567EMP electro-magnetic pulse 568EMR electro-magnetic radiation 569ENIAC electronic numerical integrator and computer 570EOF end of file 571EOI end of interrupt 572EOIS end of interactive support 573EOL end of life 574EOL end of line 575EOT end of transmission 576EPIC explicitly parallel instruction computing 577EPP enhanced parallel port 578EPP extensible provisioning protocol (RFC5730) 579EPRML extended partial response, maximum likelihood 580EPROM erasable programmable read only memory 581EPSS Exploit Prediction Scoring System 582EPT extended page tables 583ERC error recovery control 584ERD emergency recovery disk 585ERD entity relationship diagram 586ERE extended regular expression 587ERST error record serialization table 588ESAN Efficiency Sanitizer 589ESB enterprise service bus 590ESDI enhanced small disk interface 591ESDRAM enhanced synchronous dynamic random access memory 592ESI enclosure services interface 593ESS electronic switching system 594ESS extended service set 595ESSID extended service set identifier 596EST enhanced speedstep 597ETL extract, transform, load 598EU execution unit 599EULA end user license agreement 600EdDSA Edwards curve digital signature algorithm 601FAT file allocation table 602FBRAM frame buffer random access memory 603FCIF full common intermediate format 604FCL fiber channel loop 605FCS frame check sequence 606FDC floppy disk controller 607FDD floppy disk drive 608FDDI fiber distributed data interface 609FDE full disk encryption 610FDT flattened device tree 611FEA finite element analysis 612FEC forward error correction 613FET field-effect transistor 614FF finite field 615FF form feed 616FFDH finite-field Diffie-Hellman 617FFH functional fixed hardware 618FFI foreign function interface 619FFM focus follows mouse 620FFS Fast File System 621FFS find first set 622FFT fast Fourier transform 623FG floating gate 624FHRP first hop redundancy protocol 625FHSS frequency hop spread spectrum 626FID frequency identifier 627FIFO first in, first out 628FILO first in, last out 629FIPS Federal Information Processing Standards 630FIR fast infrared 631FLOPS floating [point] operations per second 632FLOSS free/libre/open source software 633FM frequency modulation 634FMR false match rate 635FOSS free/open source software 636FPGA field programmable gate array 637FPM fast page mode 638FPR floating point register 639FPU floating point unit 640FQDN fully qualified domain name 641FRR false rejection rate 642FRR Free Range Routing 643FRU field replaceable unit 644FS file system 645FSB front side bus 646FSCK file system check 647FSF Free Software Foundation 648FSK frequency shift keying 649FSM finite-state machine 650FTA fault tree analysis 651FTL flash translation layer 652FTP File Transfer Protocol 653FTPS File Transfer Protocol Secure 654FTTH fiber to the home 655FUS fast user switching 656FWH firmware hub 657FWS folding white space 658GAL generic array logic 659GARP generic attribute registration protocol 660GAS generic address structure 661GC garbage collector 662GCC GNU Compiler Collection 663GCM Galois counter mode 664GCR group-coded recording 665GDI Graphics Device Interface 666GDT global descriptor table 667GDT (block) group descriptor table 668GECOS general comprehensive operating supervisor 669GEM graphics environment manager 670GEM graphics execution manager 671GEMM general matrix multiply 672GENA general event notification architecture 673GHC Glasgow Haskell compiler 674GHES generic hardware error source 675GIC generic interrupt controller 676GID group identifier 677GIF graphics interchange format 678GLBP gateway load balancing protocol 679GMCH graphics and memory controller hub 680GNU GNU's Not Unix 681GOP graphics output protocol 682GOT global offset table 683GPE general purpose event 684GPF general protection fault 685GPG GNU Privacy Guard 686GPL [GNU] General Public License 687GPR general purpose register 688GPS generalized processor sharing 689GPT GUID partition table 690GPU graphics processing unit 691GR golden ratio 692GRE generic routing encapsulation 693GRO generic receive offload 694GSI global system interrupt 695GSO generic send offload 696GUI graphical user interface 697GUID globally unique identifier 698GUS Gravis UltraSound 699GVFS git virtual file system 700HA high availability 701HAL hardware abstraction layer 702HAT hashed array tree 703HATEOAS hypermedia as the engine of application state 704HBA host bus adapter 705HBS hash-based signature 706HCC Home Cable Computer 707HCCA Home Cable Computer Adaptor 708HCF halt and catch fire 709HCI host controller interface 710HCI human-computer interaction 711HCL hardware compatibility list 712HDCP High-bandwidth Digital Content Protection 713HDD hard disk drive 714HDL hardware description language 715HDMI High-Definition Multimedia Interface 716HDTV high-definition television 717HECI host embedded controller interface 718HEST hardware error source table 719HEVC high efficiency video coding 720HF high frequency 721HFM highest frequency mode 722HFS hierarchical file system 723HID human interface device 724HKDF HMAC-based key derivation function 725HKP HTTP Keyserver Protocol 726HLE hardware lock elision (Intel) 727HLL high-level language 728HMA high memory area 729HMI human-machine interface 730HNDL harvest now, decrypt later 731HOOD hierarchical object oriented design 732HOTP HMAC-based one time password 733HP Hewlett-Packard 734HPC high performance computing 735HPD hot plug detection 736HPET high precision event timer 737HPKE hybrid public key encryption 738HSM hardware security module 739HSM hierarchical storage management 740HSRP hot standby router protocol 741HT hyper-threading 742HTC hardware thermal control 743HTCC high temperature co-fired ceramic 744HTML HyperText Markup Language 745HTT hyper-threading technology 746HTTP Hypertext Transfer Protocol 747HTTPS Hypertext Transfer Protocol Secure 748HVDS High-Voltage Differential Signaling 749HVM hardware virtual machine 750HWASAN Hardware-assisted Address Sanitizer 751HZ Hertz 752I2O intelligent input/output 753IA information assurance 754IAAS infrastructure as a service 755IAB Internet Architecture Board 756IANA Internet Assigned Numbers Authority 757IBC iterated block cipher 758IBM International Business Machines 759IBPI international blinking pattern interpretation 760IBS instruction based sampling 761IBSS independent basic service set 762IBT indirect branch tracking 763IC integrated circuit 764ICA independent computer architecture 765ICACLS integrity control access control lists 766ICB Internet Citizen's Band 767ICE in-circuit emulator 768ICE internal compiler error 769ICH I/O controller hub 770ICMP Internet Control Message Protocol 771ICT information and communications technology 772ICW initialization command word 773IDA Intel dynamic acceleration 774IDCMP Intuition direct communication message port 775IDCT inverse discrete cosine transform 776IDE integrated development environment 777IDE integrated drive electronics 778IDPS intrusion detection [and] prevention system 779IDRP inter-domain routing protocol 780IDS intrusion detection system 781IDT interrupt descriptor table 782IE Internet Explorer 783IEC International Electrotechnical Commission 784IEEE Institute of Electrical and Electronics Engineers 785IESG Internet Engineering Steering Group 786IETF Internet Engineering Task Force 787IF intermediate frequency 788IFCM isochronous flow control mode 789IFF Interchange File Format 790IFS internal field separator 791IGD Internet gateway device 792IGMP Internet Group Management Protocol 793IGP interior gateway protocol 794IHV independent hardware vendor 795IKE Internet key exchange 796IKM input keying material 797ILM internal loopback mode 798ILOM integrated lights-out management 799ILP instruction level parallelism 800IM instant messaging 801IMAP Internet Message Access Protocol 802IMC integrated memory controller 803IMCR interrupt mode configuration register 804IME input method editor 805IMR interrupt mask register 806IMS information management system 807IMSI international mobile subscriber identity 808INCITS InterNational Committee for Information Technology Standards 809INODE index node 810IO input/output 811IOCTL input/output control 812IOM input/output managers 813IOMMU input/output memory management unit 814IOT Internet of Things 815IP Internet Protocol 816IP intellectual property 817IPC instructions per cycle 818IPC interprocess communication 819IPCF interprocess communication facility 820IPE integrated programming environment 821IPI intelligent peripheral interface 822IPI interprocessor interrupt 823IPL Initial Program Load 824IPL Interrupt Priority Level 825IPMB Intelligent Platform Management Bus 826IPMI Intelligent Platform Management Interface 827IPNG Internet Protocol, Next Generation 828IPS in-plane switching 829IPS intrusion prevention system 830IPSEC Internet Protocol Security 831IR intermediate representation 832IRC Internet Relay Chat 833IRDA infrared data association 834IRDP ICMP Router Discovery Protocol 835IRQ interrupt request 836IRQL interrupt request level 837IRR interrupt request register 838IRTF Internet Research Task Force 839IS information system 840ISA industry standard architecture 841ISA instruction set architecture 842ISB instruction synchronization barrier (Arm) 843ISDN integrated services digital network 844ISE instant secure erase 845ISI inter-symbol interference 846ISL initial system load 847ISM industrial, scientific, [and] medical 848ISMS information system management system 849ISN initial serial number 850ISO International Standards Organization 851ISOC Internet Society 852ISP Internet service provider 853ISR in-service register 854ISR interrupt service routine 855IST internal spanning tree 856IST interrupt stack table 857ISV independent software vendor 858IT information technology 859ITB Intel Turbo Boost 860ITIL information technology infrastructure library 861ITP in-target probe 862ITSM IT service management 863IV initialization vector 864IVT interrupt vector table 865JBOD just a bunch of disks 866JCL Job Control Language 867JFET junction [gate] field-effect transistor 868JIT just in time 869JPEG Joint Photographic Experts Group 870JRE Java Runtime Environment 871JSON JavaScript Object Notation 872JTAG joint test action group 873KASAN Kernel Address Sanitizer 874KASLR kernel address space layout randomization 875KB keyboard 876KB kilobyte 877KBD keyboard 878KBD kilobaud 879KCS keyboard controller style 880KDF key derivation function 881KEK key encryption key 882KEM key encapsulation mechanism 883KLOC thousand lines of code 884KMS kernel-mode setting 885KPI kernel programming interface 886KVA kernel virtual address 887KVM kernel virtual machine 888KVM kernel virtual memory 889KVM keyboard, video, [and] mouse 890L2CAP link layer control and adaptation protocol 891LAG link aggregation group 892LAMP Linux Apache MySQL {Perl,PHP,Python} 893LAN local area network 894LAPIC local advanced programmable interrupt controller 895LAR load access rights 896LBA logical block addressing 897LBNF labeled backus-naur form 898LBS location-based service 899LCD liquid crystal display 900LCP link control protocol 901LDA local delivery agent 902LDAP Lightweight Directory Access Protocol 903LDR light-dependent resistor 904LDT local descriptor table 905LE logical extent 906LED light emitting diode 907LELL low energy link layer 908LER label edge router 909LF line feed 910LF low frequency 911LFM lowest frequency mode 912LFN long file names 913LFO low-frequency oscillation 914LFS log-structured file system 915LFU least frequently used 916LHP loop heat pipe 917LIF logical interchange format 918LIFO last in, first out 919LILO LInux LOader 920LILO last in, last out 921LINT local interrupt 922LIR local Internet registry 923LISP LISt Processor 924LISP Locator/ID Separation Protocol 925LKM {Linux,loadable} kernel module 926LKML Linux kernel mailing list 927LL load linked 928LL/SC load linked/store conditional 929LLC logical link control 930LLD low-level design 931LLDD low-level design document 932LLDP link layer discovery protocol 933LLF low level format 934LLMNR link-local multicast name resolution 935LLVM Low Level Virtual Machine 936LM long mode 937LMCE local machine check exception 938LMI local management interface 939LMM link management mode 940LMP link management protocol 941LMS Leighton-Micali Signature 942LNO loop nest optimization 943LOC lines of code 944LOM lights-out management 945LPC low pin count 946LPE Linux performance events 947LPS local positioning system 948LRC longitudinal redundancy check 949LRM left-to-right mark 950LRO Large Receive Offload 951LRO left-to-right override 952LRU least recently used 953LS link state 954LSAN Leak Sanitizer 955LSB Linux standards base 956LSB least significant {bit,byte} 957LSI large scale integration 958LSL load segment limit 959LSM log structured merge 960LSN Large Scale NAT 961LSN log sequence number 962LSO large send offload 963LSR label switch router 964LTCC low temperature co-fired ceramic 965LTO linear tape-open 966LTO link time optimization 967LTR left to right 968LTR letter(-sized paper) 969LTR load task register 970LTS long term support 971LUA Lua Uppercase Accident 972LUN logical unit number 973LV logical volume 974LVDS Low-Voltage Differential Signaling 975LVM logical volume management 976LVT local vector table 977LWP light-weight process 978LZSS Lempel Ziv Storer Szymanski 979LZW Lempel Ziv Welch 980MAB MAC authentication bypass 981MAC mandatory access control 982MAC message authentication {check,code} 983MAC {media,medium} access control 984MADT multiple APIC descriptor table 985MAMR microwave-assisted magnetic recording 986MB megabyte 987MBA multi-boot agent 988MBR master boot record 989MBS megabits per second 990MC memory controller 991MCA MicroChannel architecture 992MCA machine check architecture 993MCC multiversion concurrency control 994MCE machine check exception 995MCGA Multi-Color Graphics Array 996MCH memory controller hub 997MCLAG multi-chassis link aggregation group 998MCM multi-chip module 999MCQ memory controlled queue 1000MD MiniDisc 1001MD machine-dependent 1002MD-SAL model-driven service abstraction layer 1003MDA Monochrome Display Adapter 1004MDA mail delivery agent 1005MDC Management Data Clock 1006MDI Medium Dependent Interface 1007MDI-X Medium Dependent Interface Crossover 1008MDIO Management Data Input/Output 1009MDMX MIPS Digital Media eXtension 1010MDRAM multibank dynamic random access memory 1011MDS microarchitectural data sampling 1012MESI modified, exclusive, shared, invalid 1013MFC Microsoft Foundation Classes 1014MFC merge from current 1015MFM modified frequency modulation 1016MFU most frequently used 1017MGCP media gateway control protocol 1018MHU message handling unit 1019MI machine interface 1020MI machine-independent 1021MIB management information base 1022MIC message integrity {check,code} 1023MID mobile Internet device 1024MIDI musical instrument digital interface 1025MIF management information format 1026MII media independent interface 1027MIM man in the middle 1028MIMD multiple instruction, multiple data 1029MIME Multipurpose Internet Mail Extensions 1030MIMO multiple input multiple output 1031MIPS Microprocessor without Interlocked Pipeline Stages 1032MIPS million instructions per second 1033MISD multiple instruction, single data 1034MIT Massachusetts Institute of Technology 1035MITM man in the middle 1036ML machine language 1037ML machine learning 1038ML mailing list 1039ML markup language 1040ML maximum likelihood 1041ML-KEM module-lattice based key-encapsulation mechanism 1042MLAG multi-chassis link aggregation group 1043MLC multi-level cell 1044MLD multicast listener discovery 1045MLHP micro loop heat pipe 1046MLIR multi-level intermediate representation 1047MLO MMC loader 1048MMC multi-media card 1049MMF multi-mode fiber 1050MMIC monolithic microwave integrated circuit 1051MMIO memory mapped input/output 1052MMORPG massive multiplayer online role playing game 1053MMRP multiple MAC registration protocol 1054MMU memory management unit 1055MMX matrix math extension 1056MMX multimedia extension 1057MMX multiple math extension 1058MO magneto-optical 1059MOESI modified, owned, exclusive, shared, invalid 1060MOF maximum operating frequency 1061MOSFET metal-oxide-semiconductor field-effect transistor 1062MOSI modified, owned, shared, invalid 1063MP multi-platform 1064MP multiplayer 1065MP {multiprocessing,multiprocessor} 1066MPEG moving picture experts group 1067MPI message passing interface 1068MPLS Multiprotocol Label Switching 1069MPP massively parallel processor 1070MPS memory pool system 1071MPS multiprocessor specification 1072MQTT Message Queuing Telemetry Transport 1073MR modem ready 1074MRO method resolution order 1075MRP multiple registration protocol 1076MRU most recently used 1077MS Microsoft 1078MSAN Memory Sanitizer 1079MSB most significant {bit,byte} 1080MSC message sequence chart 1081MSE mean square error 1082MSF minutes seconds frames 1083MSI message signaled interrupt 1084MSI modified, shared, invalid 1085MSR {machine state,model-specific} register 1086MSS maximum segment size 1087MSTP Multiple Spanning Tree Protocol 1088MT machine translation 1089MTA mail transfer agent 1090MTBF mean time between failures 1091MTP media transfer protocol 1092MTRR memory type range register 1093MTTF mean time to failure 1094MTU maximum transmission unit 1095MUA mail user agent 1096MUD multi-user domain 1097MVCC multiversion concurrency control 1098MVR multicast VLAN registration 1099MVRP multiple VLAN registration protocol 1100MWE module width encoding 1101MX mail exchange 1102NACK negative acknowledgement 1103NAK negative acknowledgement 1104NAN neighbor awareness networking 1105NAN not a number 1106NAPT Network Address Port Translation 1107NAS network attached storage 1108NAT network address translation 1109NAV network allocation vector 1110NC numerical control 1111NC-SI network controller sideband interface 1112NCO numerically-controlled oscillator 1113NCP Network Control Protocol 1114NCQ native command queuing 1115NCSI network connectivity status indicator 1116ND neighbor discovery 1117NDFA nondeterministic finite automaton 1118NDIS network driver interface specification 1119NE numeric error 1120NEWS Network extensible Window System 1121NFA nondeterministic finite automaton 1122NFC near-field communication 1123NFCI no functional change intended 1124NFS network file system 1125NFV network function virtualization 1126NHACP NABU HCCA Application Communication Protocol 1127NIA next instruction address 1128NIC network information center 1129NIC network interface card 1130NIDS network intrusion detection system 1131NIKE Non-Interactive Key Exchange 1132NIP network interface protocol 1133NIPR non-classified IP router (network) 1134NIPS network intrusion prevention system 1135NIS network information service 1136NIST National Institute of Standards and Technology 1137NLS native language support 1138NMI non-maskable interrupt 1139NMR nonce-misuse resistance 1140NNTP Network News Transfer Protocol 1141NOC network operations center 1142NOP no operation 1143NOS network operating system 1144NP nondeterministic polynomial time 1145NRND not recommended for new designs 1146NRZ non-return to zero 1147NSA National Security Agency 1148NSA nation-state adversary 1149NSA no such agency 1150NTA negative trust anchor 1151NTM non-deterministic Turing machine 1152NTP Network Time Protocol 1153NUMA non-uniform memory access 1154NURBS non-uniform rational basis spline 1155NVD National Vulnerability Database 1156NVMM NetBSD Virtual Machine Monitor 1157NVMM non-volatile main memory 1158NVRAM non-volatile random access memory 1159NW not write-through 1160NX no execute 1161OAEP optimal asymmetric encryption padding 1162OAM operations, administration, and {management,maintenance} 1163OBO off by one 1164OBOE off by one error 1165OCL object constraint language 1166OCR optical character recognition 1167ODBC Open Database Connectivity 1168ODCM on-demand clock modulation 1169ODE offline device environment 1170ODI open data-link interface 1171ODM object data manager 1172ODMR on-demand mail relay 1173ODT on-die termination 1174OEM original equipment manufacturer 1175OFB output feedback 1176OFDM orthogonal frequency division multiplexing 1177OFET organic field-effect transistor 1178OLAP online analytical processing 1179OLE object linking and embedding 1180OLTP online transaction processing 1181ONCE on-{chip,circuit} emulation 1182ONFI open nand flash interface 1183OO OpenOffice 1184OO object oriented 1185OOB out of band 1186OOE out of order execution 1187OOM out of memory 1188OOO OpenOffice.org 1189OOP object oriented programming 1190OOPS object oriented programming systems 1191OOSE object oriented software engineering 1192OPM operations per minute 1193OPS operations per second 1194OQL Object Query Language 1195ORB object request broker 1196ORM object-relational mapping 1197OS operating system 1198OSD object-based storage device 1199OSD open source definition 1200OSF open software foundation 1201OSI Open Source Initiative 1202OSI open systems interconnection 1203OSPF open shortest path first 1204OSPM OS power management 1205OSS open sound system 1206OSS open source software 1207OSVW operating system visible workarounds 1208OTP one time password 1209OTP open telecom platform 1210OU organizational unit 1211OUI organizationally unique identifier 1212OWASP Open Web Application Security Project 1213OWL Web Ontology Language 1214P2P PCI to PCI 1215P2P peer to peer 1216PA phase accumulator 1217PA physical address 1218PAAS platform as a service 1219PAC phase-amplitude converter 1220PAE physical address extension 1221PAGP port aggregation protocol 1222PAL phase alternating line 1223PAL programmable array logic 1224PAM pluggable authentication modules 1225PAM pulse amplitude modulation 1226PAP password authentication protocol 1227PAT page attribute table 1228PAT port address translation 1229PATA parallel ATA 1230PAX portable archive exchange 1231PBE pending break encoding 1232PBE programming by example 1233PBKDF password-based key derivation function 1234PBR partition boot record 1235PBX private branch exchange 1236PC personal computer 1237PC program counter 1238PCB Protocol Control Block 1239PCB printed circuit board 1240PCB process control block 1241PCBC propagating cipher block chaining 1242PCC Portable C Compiler 1243PCD page-level cache disable 1244PCE path computation element 1245PCE performance-monitor counter enable 1246PCEP Path Computation Element Protocol 1247PCH platform controller hub 1248PCI peripheral component interconnect 1249PCM phase change memory 1250PCM pulse code modulation 1251PCMCIA Personal Computer Memory Card International Association 1252PCP Port Control Protocol 1253PD public domain 1254PDA personal digital assistant 1255PDA pushdown automaton 1256PDAG propositional directed acyclic graph 1257PDB power distribution board 1258PDF portable document format 1259PDM pulse-duration modulation 1260PDN pull-down network 1261PDP page {descriptor,directory} page 1262PDS product data sheet 1263PDU protocol data unit 1264PE portable executable 1265PE protection enable 1266PE provider edge 1267PEAP Protected EAP 1268PECI platform environment control interface 1269PED PIN Entry Device 1270PEP protocol extension protocol 1271PER packed encoding rules 1272PFS perfect forward secrecy 1273PGAS partitioned global address space 1274PGE page global enable 1275PGO profile guided optimization 1276PGP Pretty Good Privacy 1277PHB PCI host bridge 1278PHP PHP: Hypertext Preprocessor 1279PIC performance instrumentation counters 1280PIC position independent code 1281PIC programmable interrupt controller 1282PICNIC problem in chair, not in computer 1283PID process id 1284PIE position independent executable 1285PIL Priority Interrupt Level 1286PIM personal information manager 1287PIM platform-independent model 1288PIO programmed input/output 1289PIPT physically indexed, physically tagged 1290PIQ prefetch input queue 1291PIR private information retrieval 1292PIT programmable interrupt timer 1293PIV personal identity verification 1294PIX Private Internet eXchange 1295PKCS public-key cryptography standards 1296PKE public key encryption 1297PKI public key infrastructure 1298PLC programmable logic controller 1299PLD programmable logic device 1300PLL phase locked loop 1301PLRU pseudo LRU 1302PLT procedure linkage table 1303PLTM package level thermal management 1304PM power management 1305PM {phase,pulse} modulation 1306PMC performance monitoring counters 1307PME power management event 1308PMEG page map entry group 1309PMI performance monitoring infrastructure 1310PMI platform management interrupt 1311PMIC power management integrated circuit 1312PMIO port-mapped input/output 1313PMT photo-multiplier tube 1314PMU performance monitoring units 1315PMU power management unit 1316PNG portable network graphics 1317PNP plug and play 1318POE power over ethernet 1319POF probability of failure 1320POP Post Office Protocol 1321POP power on password 1322POR plan of record 1323POSIX Portable Operating System Interface [for Unix] 1324POST power on self test 1325POTS plain old telephone system 1326POWER Performance Optimization With Enhanced RISC 1327POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1328PP pair programming 1329PPB PCI [to] PCI bridge 1330PPC Power Performance Computing 1331PPC PowerPC 1332PPI pixels per inch 1333PPM pages per minute 1334PPP Point-to-Point Protocol 1335PPPOA Point-to-Point Protocol over ATM 1336PPPOE Point-to-Point Protocol over Ethernet 1337PPR processor programming reference 1338PPT powerpoint 1339PPT punched paper tape 1340PPU physics processing unit 1341PQC post-quantum cryptography 1342PRAM Parameter RAM 1343PRBS pseudorandom bit sequence 1344PRF pseudorandom function [family] 1345PRG pseudorandom generator 1346PRML partial response, maximum likelihood 1347PRN pseudorandom {noise,number} 1348PRNG pseudorandom number generator 1349PROM programmable read only memory 1350PRP pseudorandom permutation 1351PRU Programmable Realtime Unit 1352PS PostScript 1353PSD power spectral density 1354PSE page size extensions 1355PSK phase shift keying 1356PSK pre-shared key 1357PSTN public switched telephone network 1358PSW program status word 1359PTE page table entry 1360PTLA pseudo top level aggregator 1361PTP page table page 1362PTV perceived target value 1363PU processing unit 1364PUC personal unblocking code 1365PUN physical unit number 1366PV physical volume 1367PVC permanent virtual circuit 1368PVG physical volume group 1369PVI protected-mode virtual interrupt 1370PVRST Per-VLAN rapid spanning tree 1371PVST Per-VLAN Spanning Tree 1372PWM pulse width modulation 1373PXE preboot execution environment 1374QA quality assurance 1375QAM quadrature amplitude modulation 1376QAM quality assurance management 1377QBE query by example 1378QC quality control 1379QCIF quarter common intermediate format 1380QDI quasi delay insensitive 1381QOI quality of implementation 1382QOI quick order interface 1383QOS quality of service 1384QUIC Quick UDP Internet Connections 1385QVL qualified vendor list 1386R/O read only 1387R/W read/write 1388RA receiver address 1389RA remote assistance 1390RA resource affinity 1391RA router advertisement 1392RAD rapid application development 1393RADIUS remote authentication dial-in user service 1394RAID redundant array of {independent,inexpensive} disks 1395RAII resource acquisition is initialization 1396RAM random access memory 1397RAS reliability, availability and serviceability 1398RAS remote access service 1399RAS restartable atomic sequence 1400RAS row address strobe 1401RAT register allocation table 1402RAT remote access trojan 1403RBF radial basis function 1404RBL real-time blackhole list 1405RBL reputation block list 1406RBNF routing backus-naur form 1407RBT red-black tree 1408RC release candidate 1409RC remote control 1410RC run commands 1411RCS Revision Control System 1412RCU read, copy, update 1413RDB Rigid Disk Block 1414RDBMS relational database management system 1415RDF Resource Description Framework 1416RDM relational data model 1417RDMA remote direct memory access 1418RDP remote desktop protocol 1419RDRAM Rambus DRAM 1420RE regular expression 1421REPL read, evaluate, print, loop 1422REST representational state transfer 1423RF radio frequency 1424RFB remote frame buffer 1425RFI radio frequency interference 1426RFO request for ownership 1427RFU reserved for future use 1428RGB red green blue 1429RGBA red green blue alpha 1430RGMII reduced gigabit media independent interface 1431RH read hit 1432RHEL Red Hat Enterprise Linux 1433RHL Red Hat Linux 1434RIB routing information base 1435RIFF Resource Interchange File Format 1436RIP Raster Image Processor 1437RIP Routing Information Protocol 1438RIPR releasable IP router (network) 1439RIR regional Internet registry 1440RISC reduced instruction set {computer,computing} 1441RKM ROM Kernel Manual 1442RLE run length encoding 1443RLL run length limited 1444RLO right-to-left override 1445RM read miss 1446RMCP Remote Management Control Protocol 1447RMI remote method invocation 1448RMO Relaxed Memory Ordering 1449RMPM rapid memory power management 1450RMS root mean square 1451RMW read, modify, write 1452RNG random number generator 1453ROA route origin authorization 1454ROM read only memory 1455ROP return-oriented programming 1456RPC remote procedure call 1457RPG Report Program Generator 1458RPKI resource PKI 1459RPL requested privilege level 1460RPM revolutions per minute 1461RPN reverse Polish notation 1462RPVST Rapid Per-VLAN Spanning Tree 1463RR random replacement 1464RR round robin 1465RS relay station 1466RSA Rivest, Shamir, [and] Adleman 1467RSC Receive Segment Coalescing 1468RSIP Realm Specific IP 1469RSN Robust Secure Network 1470RSS Receive Side Scaling 1471RSS really simple syndication 1472RSS residual sum of squares 1473RSTP Rapid Spanning Tree Protocol 1474RT real time 1475RTC real time clock 1476RTC real time computing 1477RTF rich text format 1478RTL register transfer language 1479RTL resistor-transistor logic 1480RTL right to left 1481RTM restricted transactional memory (Intel) 1482RTOS real time operating system 1483RTP Real-time Transport Protocol 1484RTS request to send 1485RTT round trip time 1486RTTI run-time type information 1487RUP rational unified process 1488RW Rabin-Williams 1489RWM read-write memory 1490RX {receive,receiver} 1491S/PDIF Sony/Philips Digital Interface Format 1492SA security advisory 1493SA security association 1494SA source address 1495SA structured analysis 1496SAAS software as a service 1497SABRE Semi-automated business research environment 1498SACD super audio compact disc 1499SAD security association database 1500SAF-TE SCSI accessed fault-tolerant enclosure 1501SAGE Semi-automated ground environment 1502SAL {service,system} abstraction layer 1503SAM serial access memory 1504SAM sum addressed memory 1505SAML security assertion markup language 1506SAN storage area network 1507SAP service access point 1508SAPIC streamlined advanced programmable interrupt controller 1509SASD structured analysis, structured design 1510SASI Shugart Associates System Interface 1511SASL simple authentication [and] security layer 1512SATA serial advanced technology attachment 1513SAX simple API for XML 1514SB sound blaster 1515SBI supervisor binary interface 1516SBOM Software Bill of Materials 1517SBSA server base system architecture 1518SBU standard build unit 1519SC store conditional 1520SCA source code analyzer 1521SCADA supervisory control and data acquisition 1522SCC single chip cloud 1523SCC source code control 1524SCCP skinny call control protocol 1525SCCS Source Code Control System 1526SCI scalable coherent interface 1527SCI system control interrupt 1528SCIM smart common input method 1529SCM software configuration management 1530SCM source code management 1531SCM storage-class memory 1532SCO synchronous connection orientated 1533SCP secure copy 1534SCP system control processor 1535SCPI system control and power interface 1536SCSI Small Computer System Interface 1537SCT Signed Certificate Timestamp 1538SCTP Stream Control Transmission Protocol 1539SDDC software defined data center 1540SDEI software delegated exception interface 1541SDI symbol deinterleave 1542SDK software development kit 1543SDL Simple Declarative Language 1544SDL Simple Direct-media Layer 1545SDLC {software,system,systems} development life cycle 1546SDN software defined networking 1547SDP Session Description Protocol 1548SDR software defined radio 1549SDRAM synchronous dynamic random access memory 1550SDS software defined storage 1551SDT syntax-directed translation 1552SEA synchronous external abort 1553SED self-encrypting drive 1554SED stream editor 1555SEGV segmentation violation 1556SEMB serial ATA enclosure management bridge 1557SEO search engine optimization 1558SES SCSI enclosure services 1559SFC sequential function chart 1560SFI simple firmware interface 1561SFI software fault isolation 1562SFP small form-factor pluggable 1563SFTP SSH File Transfer Protocol 1564SFTP Serial File Transfer Protocol 1565SFTP Simple File Transfer Protocol 1566SGI Silicon Graphics, Inc 1567SGI software generated interrupt 1568SGMII serial gigabit media independent interface 1569SGPIO serial general purpose input/output 1570SGRAM synchronous graphics random access memory 1571SHA secure hash algorithm 1572SICP structure and interpretation of computer programs 1573SIDH supersingular isogeny Diffie-Hellman 1574SIEM security information and event management 1575SIF source input format 1576SIFS short inter-frame space 1577SIM subscriber identity module 1578SIMD single instruction, multiple data 1579SIMM single inline memory module 1580SIP Session Initiation Protocol 1581SIPR secret IP router (network) 1582SIR signal-to-interference ratio 1583SIR slow infrared 1584SIRT security incident response team 1585SISD single instruction, single data 1586SIV synthetic intialization vector 1587SLAAC stateless address auto-configuration 1588SLC single-level cell 1589SLDRAM synchronous-link dynamic random access memory 1590SLED single large expensive disk 1591SLI scalable link interface 1592SLI scan-line interleave 1593SLIC system license internal code 1594SLOC source lines of code 1595SLRU segmented LRU 1596SMA smart memory access 1597SMAF system management action field 1598SMAP Simple Mail Access Protocol 1599SMAP supervisor mode access prevention 1600SMART self-monitoring analysis and reporting technology 1601SMB Server Message Block 1602SMB system management bus 1603SMBIOS System Management BIOS 1604SMC system management controller 1605SMD storage module device 1606SMEP supervisor mode execution protection 1607SMF single mode fiber 1608SMI structure of management information 1609SMI system management interrupt 1610SMM system management mode 1611SMP serial management protocol 1612SMP symmetric multiprocessing 1613SMR shingled magnetic recording 1614SMR state machine replication 1615SMT simultaneous multithreading 1616SMTP Simple Mail Transfer Protocol 1617SMU system management unit 1618SNA systems network architecture 1619SNAP Sub-Network Access Protocol 1620SNIA Storage Networking Industry Association 1621SNMP Simple Network Management Protocol 1622SNR signal-to-noise ratio 1623SOA service oriented architecture 1624SOAP Simple Object Access Protocol 1625SOC security operations center 1626SOC system on chip 1627SOF start of frame 1628SOH start of header 1629SOHO small office/home office 1630SOL serial over LAN 1631SOM system on module 1632SP service pack 1633SP stack pointer 1634SPA storage pool allocator 1635SPAN switched port analyzer 1636SPARC scalable processor architecture 1637SPARQL SPARQL Protocol and RDF Query Language 1638SPD security policy database 1639SPD serial presence detect 1640SPDIF Sony/Philips digital interface format 1641SPI serial peripheral interface 1642SPI stateful packet inspection 1643SPIR standard portable intermediate representation 1644SPL secondary program loader 1645SPL spinlock 1646SPL system interrupt priority level 1647SPMD single process, multiple data 1648SPR special purpose register 1649SPT sectors per track 1650SQA software quality assurance 1651SQCIF sub quarter common intermediate format 1652SQL Structured Query Language 1653SRAM static random access memory 1654SRC sample rate conversion 1655SRP SCSI RDMA protocol 1656SRR shaped round robin 1657SRTP Secure Real-time Transport Protocol 1658SS self-snoop 1659SS stack segment 1660SSA static single assignment 1661SSAP source service access point 1662SSB single-sideband modulation 1663SSB speculative store bypass 1664SSBB speculative store bypass barrier (Arm) 1665SSBD speculative store bypass disable (Intel) 1666SSC spread spectrum clock 1667SSD solid state drive 1668SSE streaming SIMD extensions 1669SSFDC solid state floppy disc card 1670SSH secure shell 1671SSI server side includes 1672SSID service set identifier 1673SSL secure sockets layer 1674SSP stack smashing protection 1675SSRF server-side request forgery 1676SSTP secure socket tunneling protocol 1677STC software thermal control 1678STD state transition diagram 1679STEK session ticket encryption key 1680STM software transactional memory 1681STOMP Streaming Text Oriented Messaging Protocol 1682STP Spanning Tree Protocol 1683STP shielded twisted pair 1684STRG spanning tree root guard 1685SUN Stanford University Network 1686SUS Single Unix Specification 1687SUT system under test 1688SVC switched virtual circuit 1689SVG scalable vector graphics 1690SVGA Super Video Graphics Array 1691SVI {switch,switched} virtual interface 1692SVM secure virtual machine 1693SVM support vector machine 1694SVR System V Release 1695SVS Separate Virtual Space 1696SWF Shockwave Flash 1697SWIG simplified wrapper [and] interface generator 1698SYR symbol timing recovery 1699TA test assertion 1700TA transmitter address 1701TAA transactional asynchronous abort (Intel) 1702TACACS terminal access controller access-control system 1703TAI international atomic time 1704TAO track at once 1705TAOCP The Art of Computer Programming 1706TAP Test Anything Protocol 1707TAS test and set 1708TB terabyte 1709TBNF transitional backus-naur form 1710TCB trace capture buffer 1711TCB trusted computing base 1712TCC thermal control circuit 1713TCL tool command language 1714TCP Transmission Control Protocol 1715TCQ tagged command queueing 1716TDC time [to] digital converter 1717TDD test-driven development 1718TDD time division duplex 1719TDM time division multiplexing 1720TDMA time division multiple access 1721TDOA time difference of arrival 1722TDP thermal design {point,power} 1723TDR time-domain reflectometry 1724TECO Text Editor and Corrector 1725TEE Trusted Execution Environment 1726TFT thin film transistor 1727TFTP Trivial File Transfer Protocol 1728TIAS try it and see 1729TIFF tagged image file format 1730TITS try it to see 1731TK temporal key 1732TKIP Temporal Key Integrity Protocol 1733TLA top level aggregator 1734TLB translation lookaside buffer 1735TLD top level domain 1736TLER time-limited error recovery 1737TLI transport layer interface 1738TLS thread local storage 1739TLS transport layer security 1740TLV type, length, value 1741TM Turing machine 1742TM thermal monitor 1743TMDS transition minimized differential signaling 1744TMG transmogrifier 1745TMO timeout 1746TOD time of day 1747TOE TCP offload engine 1748TOFU trust on first use 1749TOS terms of service 1750TOS trusted operating system 1751TOS type of service 1752TOTP time-based one time password 1753TP transaction processing 1754TPI tracks per inch 1755TPM transactions per minute 1756TPM trusted platform module 1757TPR task priority register 1758TPS transactions per second 1759TPS transmission parameters signaling 1760TR task register 1761TR token ring 1762TRL timing recovery loop 1763TRNG true random number generator 1764TS terminal services 1765TS time series 1766TS time stamp 1767TS transport stream 1768TSAN Thread Sanitizer 1769TSC time stamp counter 1770TSD time stamp disable 1771TSDB time series database 1772TSL test, set, lock 1773TSO TCP segmentation offload 1774TSO Total Store Ordering 1775TSO time sharing option 1776TSP Time-Stamp Protocol 1777TSP Tunnel Setup Protocol 1778TSP time synchronization protocol 1779TSP traveling salesman problem 1780TSS task state segment 1781TSV tab-separated values 1782TSX transaction synchronization extensions (Intel) 1783TTL time to live 1784TTL transistor-transistor logic 1785TTM translation table maps 1786TTY teletype 1787TU translation unit 1788TUI {terminal,text-based,textual} user interface 1789TX {transmit out,transmitter} 1790TXG transaction group 1791TZ time zone 1792UAC user {access,account} control 1793UAF use-after-free 1794UART universal asynchronous receiver/transmitter 1795UAT user acceptance testing 1796UB undefined behavior 1797UBSAN Undefined Behavior Sanitizer 1798UC uncacheable 1799UCS unified computing system 1800UCS uniform-cost search 1801UCS universal coded character set 1802UDI uniform driver interface 1803UDMA ultra DMA 1804UDO ultra density optical 1805UDP User Datagram Protocol 1806UDS Unix Domain Socket 1807UEFI unified extensible firmware interface 1808UFO UDP fragmentation offload 1809UFS Unix File System 1810UGA universal graphics adapter 1811UI unit interval 1812UI user interface 1813UICC universal integrated circuit card 1814UID unique identifier 1815UID user identifier 1816UL upload 1817UMA uniform memory access 1818UMA upper memory area 1819UMB upper memory block 1820UML unified modeling language 1821UMPC ultra-mobile PC 1822UPNP universal plug and play 1823UPS uninterruptible power supply 1824URI uniform resource identifier 1825URL uniform resource locator 1826URN uniform resource name 1827USART universal synchronous/asynchronous receiver/transmitter 1828USB universal serial bus 1829USWC uncacheable speculative write combining 1830UT unit test 1831UTC coordinated universal time 1832UTF unicode transformation formats 1833UTP unshielded twisted pair 1834UTS UNIX time-sharing 1835UUCP Unix-to-Unix Copy Protocol 1836UUID universally unique identifier 1837UUOC useless use of cat 1838UUT unit under test 1839UX user experience 1840VA vertical alignment 1841VA virtual address 1842VA volt-ampere 1843VAX virtual address extension 1844VB Visual Basic 1845VBR volume boot record 1846VCA variable-gain amplifier 1847VCC common collector voltage 1848VCCP virtual chassis control protocol 1849VCF voltage-controlled filter 1850VCM virtual channel memory 1851VCO voltage-controlled oscillator 1852VCP virtual chassis port 1853VCS version control system 1854VDP vulnerability disclosure policy 1855VDPAU Video Decode and Presentation API for Unix 1856VES virtual execution system 1857VESA Video Electronics Standards Association 1858VFO variable-frequency oscillator 1859VFS virtual file system 1860VG volume group 1861VGA Video Graphics Array 1862VHD virtual hard disk 1863VHDCI very high density cable interconnect 1864VID {VLAN,voltage level} identifier 1865VIM Vi IMproved 1866VIPT virtually indexed, physically tagged 1867VIVT virtually indexed, virtually tagged 1868VLAN virtual local area network 1869VLD variable-length decoding 1870VLIW very long instruction word 1871VLSI very large scale integration 1872VLSM variable length subnet mask 1873VM virtual {machine,memory} 1874VME virtual mode extension 1875VMX vector multimedia extensions 1876VMX virtual machine extensions 1877VNC virtual network computing 1878VNI virtual network identifier 1879VOD video on demand 1880VPD vital product data 1881VPN virtual private network 1882VPWS virtual private wire service 1883VR virtual reality 1884VRAM video random access memory 1885VRF virtual routing and forwarding 1886VRM voltage regulator module 1887VROC Virtual RAID On CPU 1888VRRP Virtual Router Redundancy Protocol 1889VSTP VLAN Spanning Tree Protocol 1890VTEP VXLAN tunnel endpoint 1891VTP VLAN Trunking Protocol 1892VXFS Veritas file system 1893VXLAN virtual extensible LAN 1894VXVM Veritas volume manager 1895W watt 1896W3C World Wide Web Consortium 1897WAFL write anywhere file layout 1898WAMP Web Application Messaging Protocol 1899WAN wide area network 1900WAP Wireless Application Protocol 1901WAP wireless access point 1902WDDM Windows Display Driver Model 1903WDM Wavelength Division Multiplexing 1904WDM Windows Driver Model 1905WDT watchdog timer 1906WEP Wired Equivalent Privacy 1907WFI wait for interrupt 1908WFQ weighted fair queuing 1909WH write hit 1910WHEA Windows hardware error architecture 1911WIFI wireless fidelity 1912WLAN wireless local area network 1913WM write miss 1914WMF Windows meta file 1915WMI Windows Management Instrumentation 1916WOL Wake-on-LAN 1917WOM Wake-on-Modem 1918WOR Wake-on-Ring 1919WORM write once read many 1920WP WordPerfect 1921WP word processor 1922WP write protect 1923WPA Wi-Fi Protected Access 1924WPA2 Wi-Fi Protected Access II 1925WPAD web proxy auto-discovery protocol 1926WPS Wi-Fi Protected Setup 1927WRAM window random access memory 1928WS web services 1929WTC write through caching 1930WTD weighted tail drop 1931WWAN wireless wide area network 1932WWW world wide web 1933WYSIAYG what you see is all you get 1934WYSIWYG what you see is what you get 1935XBAR crossbar 1936XDMCP X Display Manager control protocol 1937XER XML encoding rules 1938XGA Extended Graphics Array 1939XHR XMLHttpRequest 1940XIP execute in place 1941XML Extensible Markup Language 1942XMSS eXtended Merkle Signature Scheme 1943XNA XNA's not acronymed 1944XNS Xerox network systems 1945XOF eXtendable-Output Function 1946XOR exclusive or 1947XP extreme programming 1948XSI X/Open System Interface 1949XSL extensible stylesheet language 1950XSLT extensible stylesheet language transformations 1951XSS cross site scripting 1952XT extended technology 1953XTACACS extended terminal access controller access-control system 1954XTI X/Open transport interface 1955XUL XML user interface language 1956YACC yet another compiler compiler 1957YAML YAML ain't markup language 1958YANG yet another next generation 1959YAWPFAPR you are welcome; please file a problem report 1960YP Yellow Pages 1961YTD year to date 1962ZAP ZFS attribute processor 1963ZBR zone bit recording 1964ZFOD zero-filled on demand 1965ZFS zettabyte file system 1966ZIF zero insertion force 1967ZIFS zero insertion force socket 1968ZIL ZFS intent log 1969ZMA zone multicast address 1970ZOI zero one infinity 1971ZOI zone of influence 1972ZPL ZFS Posix layer 1973ZVOL ZFS Volume 1974