acronyms.comp revision 1.353
1$NetBSD: acronyms.comp,v 1.353 2023/05/26 03:30:57 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 71APFS Apple file system 72API application programming interface 73APEI ACPI platform error interface 74APIC advanced programmable interrupt controller 75APIPA automatic private IP addressing 76APM advanced power management 77APM application performance management 78APU accelerated processing unit 79APT advanced persistent threat 80AQM active queue management 81ARAT always running APIC timer 82ARC adaptive replacement cache 83ARC Advanced RISC Computing 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 address space register 108ASR Apple software restore 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 162BMP basic multilingual plane 163BMP bitmap image file 164BMIC bus master interface controller 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 200BTC bit test [and] complement 201BTM bus transport mechanism 202BTR bit test [and] reset 203BTS bit test [and] set 204BTS bug tracking system 205BW bandwidth 206BWM block-write mode 207BUAG big ugly ASCII graphic 208CA certificate authority 209CACLS change access control lists 210CAD computer-aided design 211CAM computer assisted manufacturing 212CAM conditional access module 213CAM content addressable memory 214CARP Common Address Redundancy Protocol 215CAS column address strobe 216CAS compare and swap 217CAS computer algebra system 218CASE computer aided software engineering 219CAU control access unit 220CAV constant angular velocity 221CBC cipher block chaining 222CBR constant bit rate 223CC carbon copy 224CCC Chaos Computer Club 225CCD charge coupled device 226CCI co-channel interferer 227CCNUMA cache-coherent non-uniform memory access 228CCTL command completion time limit 229CD cache disable 230CD compact disc 231CDDA compact disc digital audio 232CDL compiler description language 233CDMA code division multiple access 234CDN content delivery network 235CDP Cisco Discovery Protocol 236CDRAM cache dynamic random access memory 237CER canonical encoding rules 238CE customer edge 239CF compact flash 240CFB cipher feedback 241CFG context-free grammar 242CFG control-flow graph 243CFI control-flow integrity 244CG control gate 245CGA Color Graphics Adapter 246CGI common gateway interface 247CGN Carrier-Grade NAT 248CHAP Challenge-Handshake Authentication Protocol 249CHFS chip file system 250CHS cylinder/head/sector 251CI continuous integration 252CI {common,component} interface 253CIA confidentiality, integrity, availability 254CIDR Classless Inter-Domain Routing 255CIF common intermediate format 256CIFS Common Internet File System 257CIL common intermediate language 258CIR carrier-to-interference ratio 259CIS contact image sensor 260CISC complex instruction set {computer,computing} 261CJK Chinese, Japanese, [and] Korean 262CLF common log format 263CLI command line interface 264CLI common language infrastructure 265CLR common language runtime 266CLS common language specification 267CLTT closed loop thermal throttling 268CLUT color look-up table 269CLV constant linear velocity 270CM configuration management 271CMA concert multithread architecture 272CMC chassis management controller 273CMC corrected machine check 274CMC certificate management over CMS 275CMS {configuration,content,course} management system 276CMS cryptographic message syntax 277CMI control {management,method} interface 278CMOS complementary metal-oxide-semiconductor 279CMP chip multi-processing 280CMS content management system 281CMYK cyan magenta yellow black 282CN {common,canonical} name 283CNC computer numerical control 284CNR carrier-to-noise ratio 285COA change of authority 286COF current operating frequency 287COFDM coded orthogonal frequency division multiplexing 288COFF common object file format 289COM component object model 290COM computer on module 291COMA cache-only memory architecture 292CORBA common object request broker architecture 293COS class of service 294COW copy-on-write 295CP continuous pilot 296CPA chosen-plaintext attack 297CPB core performance boost 298CPC central processor complex 299CPC cpu performance counters 300CPE common phase error 301CPE common platform enumeration 302CPER common platform error record 303CPG clock pulse generator 304CPI cycles per instruction 305CPL current privilege level 306CPLD complex programmable logic device 307CPP C preprocessor 308CPS characters per second 309CPS continuation-passing style 310CPT command pass through 311CPU central processing unit 312CR carriage return 313CRC cyclic redundancy check 314CRDT conflict-free replicated data type 315CRL carrier recovery loop 316CRLF carriage return line feed 317CSPM cloud security posture management 318CSU C start up 319CRT cathode ray tube 320CRTP curiously recurring template pattern 321CRUD create, read, update, and delete 322CS cable select 323CS chip select 324CS code segment 325CS computer science 326CSDL {common,conceptual} schema definition language 327CSI channel state information 328CSI common system interface 329CSMA carrier sense multiple access 330CSMA/CA carrier sense multiple access with collision avoidance 331CSMA/CD carrier sense multiple access with collision detection 332CSP communicating sequential processes 333CSP content security policy 334CSP constrain satisfaction problems 335CSP cryptographic service provider 336CSR control [and] status registers 337CSRG Computer Systems Research Group 338CSS cascading style sheets 339CST common spanning tree 340CSV comma-separated values 341CTF compact c type format 342CTM close to metal 343CTR counter [mode] 344CTS clear to send 345CTS common type system 346CUA common user access 347CUT coordinated universal time 348CV control voltage 349CVE common vulnerabilities and exposures 350CVS Concurrent Versions System 351DA destination address 352DAA distributed application architecture 353DAAP digital audio access protocol 354DAB digital audio broadcasting 355DAC digital [to] analog converter 356DAC discretionary access control 357DAD duplicate address detection 358DANE DNS-based Authentication of Named Entities 359DAO disk at once 360DAP Directory Access Protocol 361DAT digital audio tape 362DAT dynamic acceleration technology 363DB database 364DBA database administrator 365DBA dynamic bandwidth allocation 366DBB data bus buffer 367DBC design by contract 368DBL dynamic buffer limiting 369DBMS database management system 370DBS database server 371DC data center 372DC direct current 373DCC Direct Client-to-Client 374DCC direct cable connect 375DCD data carrier detect 376DCE data control equipment 377DCE distributed computing environment 378DCIM data center infrastructure management 379DCIM digital camera images 380DCL Digital Command Language 381DCOM distributed component object model 382DCOP Desktop COmmunication Protocol 383DCS data collection systems 384DCT discrete cosine transform 385DCU data cache unit 386DDC display data channel 387DDE dynamic data exchange 388DDI device drivers interface 389DDK device driver kit 390DDL data description language 391DDR double data rate 392DDS direct digital sound 393DDWG Digital Display Working Group 394DE debugging extensions 395DE desktop environment 396DEA data encryption algorithm 397DEC Digital Equipment Corporation 398DEK data encryption key 399DEP data execution prevention 400DER distinguished encoding rules 401DES Data Encryption Standard 402DF don't fragment 403DFA deterministic finite automaton 404DFC data flow control 405DFS depth first search 406DFS distributed file system 407DFSAN Data Flow Sanitizer 408DFT diagnostic function test 409DFT discrete Fourier transform 410DGL data generation language 411DGEMM double precision general matrix multiply 412DH Diffie-Hellman 413DHCP Dynamic Host Configuration Protocol 414DIA dedicated Internet access 415DIB device independent bitmap 416DIFS distributed inter-frame space 417DIMM dual inline memory module 418DIRT design in real time 419DKI driver/kernel interface 420DL diode logic 421DL discrete logarithm 422DL download 423DLCI data link connection identifier 424DLE data link escape 425DLL dynamic link library 426DLNA digital living network alliance 427DLP discrete logarithm problem 428DMA direct memory access 429DMI desktop management interface 430DMS document management system 431DMT discrete multitone modulation 432DMU data management layer 433DNARD Digital network appliance reference design 434DND drag and drop 435DNLC directory name lookup cache 436DNS Domain Name System 437DNSBL Domain Name System Block List 438DNSSEC DNS Security Extensions 439DOE distributed object environment 440DOF data over fibre 441DOM document object model 442DOS denial of service 443DOS disk operating system 444DP DisplayPort 445DPC deferred procedure call 446DPCM differential pulse code modulation 447DPD dead peer detection 448DPI deep packet inspection 449DPI dots per inch 450DPL descriptor privilege level 451DPS Display PostScript 452DPST display power savings technology 453DRAAS disaster recovery as a service 454DRAM dynamic random access memory 455DRBG deterministic random bit generator 456DRI direct rendering infrastructure 457DRM digital rights management 458DRM direct rendering manager 459DRRS display refresh rate switching 460DS debug store 461DS differentiated services 462DS9000 DeathStation 9000 463DS9K DeathStation 9000 464DSA digital signature algorithm 465DSAP destination service access point 466DSB double-sideband modulation 467DSCP differentiated services code point 468DSDT differentiated system descriptor table 469DSF device special file 470DSL dataset and snapshot layer 471DSL digital subscriber line 472DSL domain specific language 473DSLAM digital subscriber line access multiplexer 474DSN delivery status notification 475DSO dynamic shared object 476DSP digital signal processor 477DSSS direct sequence spread spectrum 478DTB device tree blob 479DTC device tree compiler 480DTD document type definition 481DTE data terminal equipment 482DTE dumb terminal emulator 483DTL diode-transistor logic 484DTLS datagram transport layer security 485DTS device tree source 486DTS digital thermal sensor 487DUT device under test 488DVB digital video broadcasting 489DVCS distributed version control system 490DVD digital versatile disc 491DVFS dynamic voltage and frequency scaling 492DVI device independent 493DVI Digital Visual Interface 494DVR digital video recorder 495DWARF Debugging With Attributed Record Formats 496E-XER extended XML encoding rules 497EABI embedded-application binary interface 498EAI Email Address Internationalization 499EAI Enterprise Application Integration 500EAP Extensible Authentication Protocol 501EAPOL EAP over Lan 502EAV entity-attribute-value model 503EAV ethernet audio/video bridging 504EBCDIC Extended Binary Coded Decimal Interchange Code 505EBDA Extended BIOS Data Area 506EBNF extended backus-naur form 507EBR extended boot record 508EC elliptic curve 509ECC elliptic curve cryptography 510ECC error correction code 511ECDH elliptic curve Diffie-Hellman 512ECDL elliptic curve discrete logarithm 513ECDLP elliptic curve discrete logarithm problem 514ECDSA elliptic curve digital signature algorithm 515ECL emitter-coupled logic 516ECN explicit congestion notification 517ECP enhanced capability port 518ECS enhanced chip set 519ECS extended configuration space 520EDAC error detection and correction 521EDAT enhanced dynamic acceleration technology 522EdDSA Edwards curve digital signature algorithm 523EDGE explicit data graph execution 524EDID extended display identification data 525EDO extended data out 526EDS electronical data sheet 527EDSAC electronic delay storage automatic calculator 528EDVAC electronic discrete variable automatic computer 529EEE energy efficient ethernet 530EEE embrace, extend, extinguish 531EEPROM electrically erasable programmable read only memory 532EFI extensible firmware interface 533EFL emitter follower logic 534EFM eight to fourteen modulation 535EFS extent file system 536EGA Enhanced Graphics Adapter 537EGP exterior gateway protocol 538EH extension header 539EIDE enhanced IDE 540EISA extended industry standard architecture 541EINJ error injection table 542ELF executable and linking format 543ELS entry level system 544EMI electro-magnetic interference 545EMP electro-magnetic pulse 546EMR electro-magnetic radiation 547EMACS Editor MACroS 548ENIAC electronic numerical integrator and computer 549EOF end of file 550EOI end of interrupt 551EOIS end of interactive support 552EOL end of life 553EOL end of line 554EOT end of transmission 555EPIC explicitly parallel instruction computing 556EPP enhanced parallel port 557EPRML extended partial response, maximum likelihood 558EPROM erasable programmable read only memory 559EPT extended page tables 560ERC error recovery control 561ERD emergency recovery disk 562ERD entity relationship diagram 563ERE extended regular expression 564ERST error record serialization table 565ESAN Efficiency Sanitizer 566ESB enterprise service bus 567ESDI enhanced small disk interface 568ESDRAM enhanced synchronous dynamic random access memory 569ESI enclosure services interface 570ESS electronic switching system 571ESS extended service set 572ESSID extended service set identifier 573EST enhanced speedstep 574ETL extract, transform, load 575EU execution unit 576EULA end user license agreement 577FAT file allocation table 578FBRAM frame buffer random access memory 579FCIF full common intermediate format 580FCL fiber channel loop 581FCS frame check sequence 582FDC floppy disk controller 583FDD floppy disk drive 584FDDI fiber distributed data interface 585FDE full disk encryption 586FDT flattened device tree 587FEA finite element analysis 588FEC forward error correction 589FET field-effect transistor 590FF finite field 591FF form feed 592FFDH finite-field Diffie-Hellman 593FFH functional fixed hardware 594FFI foreign function interface 595FFM focus follows mouse 596FFS Fast File System 597FFS find first set 598FFT fast Fourier transform 599FG floating gate 600FHRP first hop redundancy protocol 601FHSS frequency hop spread spectrum 602FID frequency identifier 603FIFO first in, first out 604FILO first in, last out 605FIPS Federal Information Processing Standards 606FIR fast infrared 607FLOPS floating [point] operations per second 608FLOSS free/libre/open source software 609FM frequency modulation 610FMR false match rate 611FOSS free/open source software 612FPGA field programmable gate array 613FPM fast page mode 614FPR floating point register 615FPU floating point unit 616FQDN fully qualified domain name 617FRR false rejection rate 618FRU field replaceable unit 619FS file system 620FSB front side bus 621FSCK file system check 622FSF Free Software Foundation 623FSK frequency shift keying 624FSM finite-state machine 625FTA fault tree analysis 626FTL flash translation layer 627FTP File Transfer Protocol 628FTPS File Transfer Protocol Secure 629FTTH fiber to the home 630FUS fast user switching 631FWH firmware hub 632FWS folding white space 633GAL generic array logic 634GARP generic attribute registration protocol 635GAS generic address structure 636GC garbage collector 637GCC GNU Compiler Collection 638GCM Galois counter mode 639GCR group-coded recording 640GDI Graphics Device Interface 641GDT global descriptor table 642GECOS general comprehensive operating supervisor 643GEM graphics environment manager 644GEM graphics execution manager 645GEMM general matrix multiply 646GENA general event notification architecture 647GHC Glasgow Haskell compiler 648GHES generic hardware error source 649GIC generic interrupt controller 650GID group identifier 651GIF graphics interchange format 652GLBP gateway load balancing protocol 653GMCH graphics and memory controller hub 654GNU GNU's Not Unix 655GOP graphics output protocol 656GOT global offset table 657GPE general purpose event 658GPF general protection fault 659GPG GNU Privacy Guard 660GPL [GNU] General Public License 661GPR general purpose register 662GPS generalized processor sharing 663GPT GUID partition table 664GPU graphics processing unit 665GR golden ratio 666GRE generic routing encapsulation 667GRO generic receive offload 668GSI global system interrupt 669GSO generic send offload 670GUI graphical user interface 671GUID globally unique identifier 672GUS Gravis UltraSound 673GVFS git virtual file system 674HA high availability 675HAL hardware abstraction layer 676HAT hashed array tree 677HATEOAS hypermedia as the engine of application state 678HBA host bus adapter 679HCC Home Cable Computer 680HCCA Home Cable Computer Adaptor 681HCF halt and catch fire 682HCI host controller interface 683HCI human-computer interaction 684HCL hardware compatibility list 685HDCP High-bandwidth Digital Content Protection 686HDD hard disk drive 687HDL hardware description language 688HDMI High-Definition Multimedia Interface 689HDTV high-definition television 690HECI host embedded controller interface 691HEST hardware error source table 692HEVC high efficiency video coding 693HF high frequency 694HFM highest frequency mode 695HFS hierarchical file system 696HID human interface device 697HKDF HMAC-based key derivation function 698HKP HTTP Keyserver Protocol 699HLL high-level language 700HMA high memory area 701HMI human-machine interface 702HOOD hierarchical object oriented design 703HOTP HMAC-based one time password 704HP Hewlett-Packard 705HPC high performance computing 706HPD hot plug detection 707HPET high precision event timer 708HSM hardware security module 709HSM hierarchical storage management 710HSRP hot standby router protocol 711HT hyper-threading 712HTC hardware thermal control 713HTCC high temperature co-fired ceramic 714HTML HyperText Markup Language 715HTT hyper-threading technology 716HTTP Hypertext Transfer Protocol 717HTTPS Hypertext Transfer Protocol Secure 718HVM hardware virtual machine 719HVDS High-Voltage Differential Signaling 720HWASAN Hardware-assisted Address Sanitizer 721HZ Hertz 722I2O intelligent input/output 723IA information assurance 724IAAS infrastructure as a service 725IANA Internet Assigned Numbers Authority 726IBC iterated block cipher 727IBM International Business Machines 728IBPI international blinking pattern interpretation 729IBS instruction based sampling 730IBSS independent basic service set 731IC integrated circuit 732ICA independent computer architecture 733ICACLS integrity control access control lists 734ICB Internet Citizen's Band 735ICE in-circuit emulator 736ICE internal compiler error 737ICH I/O controller hub 738ICMP Internet Control Message Protocol 739ICT information and communications technology 740ICW initialization command word 741IDA Intel dynamic acceleration 742IDCMP Intuition direct communication message port 743IDCT inverse discrete cosine transform 744IDE integrated development environment 745IDE integrated drive electronics 746IDPS intrusion detection [and] prevention system 747IDRP inter-domain routing protocol 748IDS intrusion detection system 749IDT interrupt descriptor table 750IE Internet Explorer 751IEC International Electrotechnical Commission 752IEEE Institute of Electrical and Electronics Engineers 753IESG Internet Engineering Steering Group 754IETF Internet Engineering Task Force 755IF intermediate frequency 756IFCM isochronous flow control mode 757IFF Interchange File Format 758IFS internal field separator 759IGD Internet gateway device 760IGMP Internet Group Management Protocol 761IGP interior gateway protocol 762IHV independent hardware vendor 763IKE Internet key exchange 764ILM internal loopback mode 765ILOM integrated lights-out management 766ILP instruction level parallelism 767IM instant messaging 768IME input method editor 769IMAP Internet Message Access Protocol 770IMC integrated memory controller 771IMCR interrupt mode configuration register 772IMR interrupt mask register 773IMS information management system 774IMSI international mobile subscriber identity 775INCITS InterNational Committee for Information Technology Standards 776INODE index node 777IO input/output 778IOCTL input/output control 779IOM input/output managers 780IOMMU input/output memory management unit 781IOT Internet of Things 782IP Internet Protocol 783IP intellectual property 784IPC instructions per cycle 785IPC interprocess communication 786IPCF interprocess communication facility 787IPE integrated programming environment 788IPI intelligent peripheral interface 789IPI interprocessor interrupt 790IPL Initial Program Load 791IPL Interrupt Priority Level 792IPMB Intelligent Platform Management Bus 793IPMI Intelligent Platform Management Interface 794IPNG Internet Protocol, Next Generation 795IPS in-plane switching 796IPS intrusion prevention system 797IPSEC Internet Protocol Security 798IRC Internet Relay Chat 799IRDA infrared data association 800IRDP ICMP Router Discovery Protocol 801IR intermediate representation 802IRQ interrupt request 803IRQL interrupt request level 804IRR interrupt request register 805IRTF Internet Research Task Force 806IS information system 807ISA industry standard architecture 808ISA instruction set architecture 809ISE instant secure erase 810ISDN integrated services digital network 811ISI inter-symbol interference 812ISL initial system load 813ISM industrial, scientific, [and] medical 814ISMS information system management system 815ISN initial serial number 816ISO International Standards Organization 817ISOC Internet Society 818ISP Internet service provider 819ISR in-service register 820ISR interrupt service routine 821IST internal spanning tree 822IST interrupt stack table 823ISV independent software vendor 824IT information technology 825ITB Intel Turbo Boost 826ITIL information technology infrastructure library 827ITP in-target probe 828ITSM IT service management 829IV initialization vector 830IVT interrupt vector table 831JBOD just a bunch of disks 832JCL Job Control Language 833JFET junction [gate] field-effect transistor 834JIT just in time 835JPEG Joint Photographic Experts Group 836JRE Java Runtime Environment 837JSON JavaScript Object Notation 838JTAG joint test action group 839KASAN Kernel Address Sanitizer 840KASLR kernel address space layout randomization 841KB keyboard 842KB kilobyte 843KBD keyboard 844KBD kilobaud 845KCS keyboard controller style 846KEM key encapsulation mechanism 847KLOC thousand lines of code 848KMS kernel-mode setting 849KPI kernel programming interface 850KVA kernel virtual address 851KVM kernel virtual machine 852KVM kernel virtual memory 853KVM keyboard, video, [and] mouse 854L2CAP link layer control and adaptation protocol 855LAG link aggregation group 856LAMP Linux Apache MySQL {Perl,PHP,Python} 857LAN local area network 858LAPIC local advanced programmable interrupt controller 859LAR load access rights 860LBA logical block addressing 861LBNF labeled backus-naur form 862LBS location-based service 863LCD liquid crystal display 864LCP link control protocol 865LDA local delivery agent 866LDAP Lightweight Directory Access Protocol 867LDR light-dependent resistor 868LDT local descriptor table 869LE logical extent 870LED light emitting diode 871LELL low energy link layer 872LER label edge router 873LF line feed 874LF low frequency 875LFM lowest frequency mode 876LFN long file names 877LFO low-frequency oscillation 878LFS log-structured file system 879LFU least frequently used 880LHP loop heat pipe 881LIF logical interchange format 882LIFO last in, first out 883LILO LInux LOader 884LILO last in, last out 885LINT local interrupt 886LIR local Internet registry 887LISP LISt Processor 888LISP Locator/ID Separation Protocol 889LKM {Linux,loadable} kernel module 890LKML Linux kernel mailing list 891LL load linked 892LL/SC load linked/store conditional 893LLC logical link control 894LLD low-level design 895LLDD low-level design document 896LLDP link layer discovery protocol 897LLF low level format 898LLMNR link-local multicast name resolution 899LLVM Low Level Virtual Machine 900LM long mode 901LMCE local machine check exception 902LMI local management interface 903LMM link management mode 904LMP link management protocol 905LNO loop nest optimization 906LOC lines of code 907LOM lights-out management 908LPE Linux performance events 909LPC low pin count 910LPS local positioning system 911LRC longitudinal redundancy check 912LRM left-to-right mark 913LRO Large Receive Offload 914LRO left-to-right override 915LRU least recently used 916LS link state 917LSAN Leak Sanitizer 918LSB Linux standards base 919LSB least significant {bit,byte} 920LSI large scale integration 921LSL load segment limit 922LSM log structured merge 923LSN Large Scale NAT 924LSN log sequence number 925LSO large send offload 926LSR label switch router 927LTCC low temperature co-fired ceramic 928LTO linear tape-open 929LTO link time optimization 930LTR left to right 931LTR load task register 932LTR letter(-sized paper) 933LTS long term support 934LUA Lua Uppercase Accident 935LUN logical unit number 936LV logical volume 937LVM logical volume management 938LVT local vector table 939LVDS Low-Voltage Differential Signaling 940LWP light-weight process 941LZSS Lempel Ziv Storer Szymanski 942LZW Lempel Ziv Welch 943MAB MAC authentication bypass 944MAC mandatory access control 945MAC {media,medium} access control 946MAC message authentication {check,code} 947MADT multiple APIC descriptor table 948MAMR microwave-assisted magnetic recording 949MB megabyte 950MBA multi-boot agent 951MBR master boot record 952MBS megabits per second 953MC memory controller 954MCA machine check architecture 955MCA MicroChannel architecture 956MCC multiversion concurrency control 957MCE machine check exception 958MCGA Multi-Color Graphics Array 959MCH memory controller hub 960MCLAG multi-chassis link aggregation group 961MCM multi-chip module 962MCQ memory controlled queue 963MD machine-dependent 964MD MiniDisc 965MD-SAL model-driven service abstraction layer 966MDA mail delivery agent 967MDA Monochrome Display Adapter 968MDC Management Data Clock 969MDI Medium Dependent Interface 970MDI-X Medium Dependent Interface Crossover 971MDIO Management Data Input/Output 972MDMX MIPS Digital Media eXtension 973MDRAM multibank dynamic random access memory 974MESI modified, exclusive, shared, invalid 975MFC merge from current 976MFC Microsoft Foundation Classes 977MFM modified frequency modulation 978MFU most frequently used 979MGCP media gateway control protocol 980MHU message handling unit 981MI machine-independent 982MI machine interface 983MIB management information base 984MIC message integrity {check,code} 985MID mobile Internet device 986MIDI musical instrument digital interface 987MIF management information format 988MII media independent interface 989MIM man in the middle 990MIMD multiple instruction, multiple data 991MIME Multipurpose Internet Mail Extensions 992MIMO multiple input multiple output 993MIPS million instructions per second 994MIPS Microprocessor without Interlocked Pipeline Stages 995MISD multiple instruction, single data 996MIT Massachusetts Institute of Technology 997MITM man in the middle 998ML machine language 999ML machine learning 1000ML mailing list 1001ML markup language 1002ML maximum likelihood 1003MLAG multi-chassis link aggregation group 1004MLC multi-level cell 1005MLD multicast listener discovery 1006MLHP micro loop heat pipe 1007MLIR multi-level intermediate representation 1008MMF multi-mode fiber 1009MMIC monolithic microwave integrated circuit 1010MMIO memory mapped input/output 1011MMORPG massive multiplayer online role playing game 1012MMRP multiple MAC registration protocol 1013MMU memory management unit 1014MMX matrix math extension 1015MMX multimedia extension 1016MMX multiple math extension 1017MO magneto-optical 1018MOESI modified, owned, exclusive, shared, invalid 1019MOF maximum operating frequency 1020MOSFET metal-oxide-semiconductor field-effect transistor 1021MOSI modified, owned, shared, invalid 1022MP multi-platform 1023MP multiplayer 1024MP {multiprocessing,multiprocessor} 1025MPEG moving picture experts group 1026MPI message passing interface 1027MPLS Multiprotocol Label Switching 1028MPP massively parallel processor 1029MPS memory pool system 1030MPS multiprocessor specification 1031MQTT Message Queuing Telemetry Transport 1032MR modem ready 1033MRO method resolution order 1034MRP multiple registration protocol 1035MRU most recently used 1036MS Microsoft 1037MSAN Memory Sanitizer 1038MSB most significant {bit,byte} 1039MSC message sequence chart 1040MSE mean square error 1041MSF minutes seconds frames 1042MSI message signaled interrupt 1043MSI modified, shared, invalid 1044MSR {machine state,model-specific} register 1045MSS maximum segment size 1046MSTP Multiple Spanning Tree Protocol 1047MT machine translation 1048MTA mail transfer agent 1049MTBF mean time between failures 1050MTP media transfer protocol 1051MTRR memory type range register 1052MTTF mean time to failure 1053MTU maximum transmission unit 1054MUA mail user agent 1055MUD multi-user domain 1056MVCC multiversion concurrency control 1057MVR multicast VLAN registration 1058MVRP multiple VLAN registration protocol 1059MWE module width encoding 1060MX mail exchange 1061NACK negative acknowledgement 1062NAK negative acknowledgement 1063NAN neighbor awareness networking 1064NAN not a number 1065NAPT Network Address Port Translation 1066NAS network attached storage 1067NAT network address translation 1068NAV network allocation vector 1069NC numerical control 1070NC-SI network controller sideband interface 1071NCO numerically-controlled oscillator 1072NCP Network Control Protocol 1073NCSI network connectivity status indicator 1074NCQ native command queuing 1075ND neighbor discovery 1076NDFA nondeterministic finite automaton 1077NDIS network driver interface specification 1078NE numeric error 1079NEWS Network extensible Window System 1080NFA nondeterministic finite automaton 1081NFC near-field communication 1082NFCI no functional change intended 1083NFS network file system 1084NFV network function virtualization 1085NHACP NABU HCCA Application Communication Protocol 1086NIA next instruction address 1087NIC network information center 1088NIC network interface card 1089NIDS network intrusion detection system 1090NIP network interface protocol 1091NIPS network intrusion prevention system 1092NIS network information service 1093NIST National Institute of Standards and Technology 1094NLS native language support 1095NMI non-maskable interrupt 1096NNTP Network News Transfer Protocol 1097NMR nonce-misuse resistance 1098NOC network operations center 1099NOP no operation 1100NOS network operating system 1101NP nondeterministic polynomial time 1102NRND not recommended for new designs 1103NRZ non-return to zero 1104NSA nation-state adversary 1105NSA no such agency 1106NSA National Security Agency 1107NTM non-deterministic Turing machine 1108NTP Network Time Protocol 1109NUMA non-uniform memory access 1110NURBS non-uniform rational basis spline 1111NVMM NetBSD Virtual Machine Monitor 1112NVMM non-volatile main memory 1113NVRAM non-volatile random access memory 1114NW not write-through 1115NX no execute 1116OAEP optimal asymmetric encryption padding 1117OAM operations, administration, and {management,maintenance} 1118OBO off by one 1119OBOE off by one error 1120OCL object constraint language 1121OCR optical character recognition 1122ODE offline device environment 1123ODI open data-link interface 1124ODM object data manager 1125ODCM on-demand clock modulation 1126ODMR on-demand mail relay 1127ODT on-die termination 1128OEM original equipment manufacturer 1129OFB output feedback 1130OFDM orthogonal frequency division multiplexing 1131OFET organic field-effect transistor 1132OLAP online analytical processing 1133OLE object linking and embedding 1134OLTP online transaction processing 1135ONFI open nand flash interface 1136OO OpenOffice 1137OO object oriented 1138OOB out of band 1139OOE out of order execution 1140OOM out of memory 1141OOO OpenOffice.org 1142OOP object oriented programming 1143OOPS object oriented programming systems 1144OOSE object oriented software engineering 1145OPM operations per minute 1146OPS operations per second 1147OQL Object Query Language 1148ORB object request broker 1149ORM object-relational mapping 1150OS operating system 1151OSD object-based storage device 1152OSD open source definition 1153OSF open software foundation 1154OSI Open Source Initiative 1155OSI open systems interconnection 1156OSPF open shortest path first 1157OSPM OS power management 1158OSS open sound system 1159OSS open source software 1160OSVW operating system visible workarounds 1161OTP one time password 1162OTP open telecom platform 1163OU organizational unit 1164OUI organizationally unique identifier 1165OWASP Open Web Application Security Project 1166OWL Web Ontology Language 1167P2P PCI to PCI 1168P2P peer to peer 1169PA phase accumulator 1170PA physical address 1171PAAS platform as a service 1172PAC phase-amplitude converter 1173PAE physical address extension 1174PAGP port aggregation protocol 1175PAL phase alternating line 1176PAL programmable array logic 1177PAM pluggable authentication modules 1178PAM pulse amplitude modulation 1179PAP password authentication protocol 1180PAT page attribute table 1181PAT port address translation 1182PATA parallel ATA 1183PAX portable archive exchange 1184PBE pending break encoding 1185PBE programming by example 1186PBR partition boot record 1187PBX private branch exchange 1188PC personal computer 1189PC program counter 1190PCB printed circuit board 1191PCB process control block 1192PCB Protocol Control Block 1193PCBC propagating cipher block chaining 1194PCC Portable C Compiler 1195PCD page-level cache disable 1196PCE path computation element 1197PCE performance-monitor counter enable 1198PCEP Path Computation Element Protocol 1199PCH platform controller hub 1200PCI peripheral component interconnect 1201PCM phase change memory 1202PCM pulse code modulation 1203PCMCIA Personal Computer Memory Card International Association 1204PCP Port Control Protocol 1205PD public domain 1206PDA personal digital assistant 1207PDA pushdown automaton 1208PDAG propositional directed acyclic graph 1209PDB power distribution board 1210PDF portable document format 1211PDM pulse-duration modulation 1212PDN pull-down network 1213PDP page {descriptor,directory} page 1214PDS product data sheet 1215PDU protocol data unit 1216PE protection enable 1217PE provider edge 1218PE portable executable 1219PEAP Protected EAP 1220PECI platform environment control interface 1221PEP protocol extension protocol 1222PER packed encoding rules 1223PFS perfect forward secrecy 1224PGAS partitioned global address space 1225PGE page global enable 1226PGO profile guided optimization 1227PGP Pretty Good Privacy 1228PHB PCI host bridge 1229PHP PHP: Hypertext Preprocessor 1230PIC performance instrumentation counters 1231PIC position independent code 1232PIC programmable interrupt controller 1233PICNIC problem in chair, not in computer 1234PID process id 1235PIE position independent executable 1236PIL Priority Interrupt Level 1237PIM personal information manager 1238PIM platform-independent model 1239PIO programmed input/output 1240PIPT physically indexed, physically tagged 1241PIR private information retrieval 1242PIQ prefetch input queue 1243PIT programmable interrupt timer 1244PIV personal identity verification 1245PIX Private Internet eXchange 1246PKCS public-key cryptography standards 1247PKI public key infrastructure 1248PLC programmable logic controller 1249PLD programmable logic device 1250PLL phase locked loop 1251PLRU pseudo LRU 1252PLT procedure linkage table 1253PLTM package level thermal management 1254PM power management 1255PM {phase,pulse} modulation 1256PMC performance monitoring counters 1257PME power management event 1258PMEG page map entry group 1259PMI performance monitoring infrastructure 1260PMI platform management interrupt 1261PMIC power management integrated circuit 1262PMIO port-mapped input/output 1263PMT photo-multiplier tube 1264PMU performance monitoring units 1265PMU power management unit 1266PNG portable network graphics 1267PNP plug and play 1268POE power over ethernet 1269POF probability of failure 1270POP Post Office Protocol 1271POP power on password 1272POR plan of record 1273POSIX Portable Operating System Interface [for Unix] 1274POST power on self test 1275POTS plain old telephone system 1276POWER Performance Optimization With Enhanced RISC 1277POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1278PP pair programming 1279PPB PCI [to] PCI bridge 1280PPC PowerPC 1281PPC Power Performance Computing 1282PPI pixels per inch 1283PPM pages per minute 1284PPP Point-to-Point Protocol 1285PPPOA Point-to-Point Protocol over ATM 1286PPPOE Point-to-Point Protocol over Ethernet 1287PPR processor programming reference 1288PPT powerpoint 1289PPT punched paper tape 1290PPU physics processing unit 1291PQC post-quantum cryptography 1292PRAM Parameter RAM 1293PRBS pseudorandom bit sequence 1294PRG pseudorandom generator 1295PRF pseudorandom function [family] 1296PRML partial response, maximum likelihood 1297PRN pseudorandom {noise,number} 1298PRNG pseudorandom number generator 1299PROM programmable read only memory 1300PRP pseudorandom permutation 1301PRU Programmable Realtime Unit 1302PS PostScript 1303PSD power spectral density 1304PSE page size extensions 1305PSK phase shift keying 1306PSK pre-shared key 1307PSTN public switched telephone network 1308PSW program status word 1309PTE page table entry 1310PTLA pseudo top level aggregator 1311PTP page table page 1312PTV perceived target value 1313PU processing unit 1314PUC personal unblocking code 1315PUN physical unit number 1316PV physical volume 1317PVC permanent virtual circuit 1318PVG physical volume group 1319PVI protected-mode virtual interrupt 1320PVRST Per-VLAN rapid spanning tree 1321PVST Per-VLAN Spanning Tree 1322PWM pulse width modulation 1323PXE preboot execution environment 1324QA quality assurance 1325QAM quadrature amplitude modulation 1326QAM quality assurance management 1327QBE query by example 1328QC quality control 1329QDI quasi delay insensitive 1330QCIF quarter common intermediate format 1331QOI quality of implementation 1332QOI quick order interface 1333QOS quality of service 1334QVL qualified vendor list 1335R/O read only 1336R/W read/write 1337RA receiver address 1338RA remote assistance 1339RA resource affinity 1340RA router advertisement 1341RAD rapid application development 1342RADIUS remote authentication dial-in user service 1343RAID redundant array of {independent,inexpensive} disks 1344RAII resource acquisition is initialization 1345RAM random access memory 1346RAS reliability, availability and serviceability 1347RAS remote access service 1348RAS restartable atomic sequence 1349RAS row address strobe 1350RBF radial basis function 1351RBL reputation block list 1352RBL real-time blackhole list 1353RBNF routing backus-naur form 1354RBT red-black tree 1355RC release candidate 1356RC remote control 1357RC run commands 1358RCS Revision Control System 1359RCU read, copy, update 1360RDB Rigid Disk Block 1361RDBMS relational database management system 1362RDF Resource Description Framework 1363RDM relational data model 1364RDMA remote direct memory access 1365RDP remote desktop protocol 1366RDRAM Rambus DRAM 1367RE regular expression 1368REPL read, evaluate, print, loop 1369REST representational state transfer 1370RF radio frequency 1371RFB remote frame buffer 1372RFI radio frequency interference 1373RFO request for ownership 1374RFU reserved for future use 1375RGB red green blue 1376RGBA red green blue alpha 1377RGMII reduced gigabit media independent interface 1378RH read hit 1379RHEL Red Hat Enterprise Linux 1380RHL Red Hat Linux 1381RIB routing information base 1382RIFF Resource Interchange File Format 1383RIP Raster Image Processor 1384RIP Routing Information Protocol 1385RIR regional Internet registry 1386RISC reduced instruction set {computer,computing} 1387RKM ROM Kernel Manual 1388RLE run length encoding 1389RLL run length limited 1390RLO right-to-left override 1391RM read miss 1392RMCP Remote Management Control Protocol 1393RMI remote method invocation 1394RMO Relaxed Memory Ordering 1395RMPM rapid memory power management 1396RMS root mean square 1397RMW read, modify, write 1398RNG random number generator 1399ROM read only memory 1400ROP return-oriented programming 1401RPC remote procedure call 1402RPG Report Program Generator 1403RPKI resource PKI 1404RPL requested privilege level 1405RPM revolutions per minute 1406RPN reverse Polish notation 1407RPVST Rapid Per-VLAN Spanning Tree 1408RR random replacement 1409RR round robin 1410RS relay station 1411RSA Rivest, Shamir, [and] Adleman 1412RSC Receive Segment Coalescing 1413RSIP Realm Specific IP 1414RSN Robust Secure Network 1415RSS really simple syndication 1416RSS Receive Side Scaling 1417RSS residual sum of squares 1418RSTP Rapid Spanning Tree Protocol 1419RT real time 1420RTC real time clock 1421RTC real time computing 1422RTF rich text format 1423RTL register transfer language 1424RTL resistor-transistor logic 1425RTL right to left 1426RTOS real time operating system 1427RTP Real-time Transport Protocol 1428RTS request to send 1429RTT round trip time 1430RTTI run-time type information 1431RUP rational unified process 1432RW Rabin-Williams 1433RWM read-write memory 1434RX {receive,receiver} 1435S/PDIF Sony/Philips Digital Interface Format 1436SA security advisory 1437SA security association 1438SA source address 1439SA structured analysis 1440SAAS software as a service 1441SABRE Semi-automated business research environment 1442SACD super audio compact disc 1443SAD security association database 1444SAF-TE SCSI accessed fault-tolerant enclosure 1445SAGE Semi-automated ground environment 1446SAL {service,system} abstraction layer 1447SAM serial access memory 1448SAM sum addressed memory 1449SAML security assertion markup language 1450SAN storage area network 1451SAP service access point 1452SAPIC streamlined advanced programmable interrupt controller 1453SASD structured analysis, structured design 1454SASI Shugart Associates System Interface 1455SASL simple authentication [and] security layer 1456SATA serial advanced technology attachment 1457SAX simple API for XML 1458SB sound blaster 1459SBSA server base system architecture 1460SBU standard build unit 1461SC store conditional 1462SCA source code analyzer 1463SCADA supervisory control and data acquisition 1464SCC single chip cloud 1465SCC source code control 1466SCCP skinny call control protocol 1467SCCS Source Code Control System 1468SCI scalable coherent interface 1469SCI system control interrupt 1470SCIM smart common input method 1471SCM software configuration management 1472SCM source code management 1473SCM storage-class memory 1474SCO synchronous connection orientated 1475SCP secure copy 1476SCP system control processor 1477SCPI system control and power interface 1478SCSI Small Computer System Interface 1479SCTP Stream Control Transmission Protocol 1480SDDC software defined data center 1481SDEI software delegated exception interface 1482SDI symbol deinterleave 1483SDK software development kit 1484SDL Simple Declarative Language 1485SDL Simple Direct-media Layer 1486SDLC {software,system,systems} development life cycle 1487SDN software defined networking 1488SDP Session Description Protocol 1489SDR software defined radio 1490SDRAM synchronous dynamic random access memory 1491SDS software defined storage 1492SDT syntax-directed translation 1493SEA synchronous external abort 1494SEGV segmentation violation 1495SED self-encrypting drive 1496SED stream editor 1497SEMB serial ATA enclosure management bridge 1498SEO search engine optimization 1499SES SCSI enclosure services 1500SFC sequential function chart 1501SFI simple firmware interface 1502SFI software fault isolation 1503SFTP SSH File Transfer Protocol 1504SFTP Serial File Transfer Protocol 1505SFTP Simple File Transfer Protocol 1506SGI Silicon Graphics, Inc 1507SGI software generated interrupt 1508SGMII serial gigabit media independent interface 1509SGPIO serial general purpose input/output 1510SGRAM synchronous graphics random access memory 1511SHA secure hash algorithm 1512SICP structure and interpretation of computer programs 1513SIDH supersingular isogeny Diffie-Hellman 1514SIEM security information and event management 1515SIF source input format 1516SIFS short inter-frame space 1517SIM subscriber identity module 1518SIMD single instruction, multiple data 1519SIMM single inline memory module 1520SIP Session Initiation Protocol 1521SIR signal-to-interference ratio 1522SIR slow infrared 1523SISD single instruction, single data 1524SIV synthetic intialization vector 1525SLAAC stateless address auto-configuration 1526SLC single-level cell 1527SLDRAM synchronous-link dynamic random access memory 1528SLED single large expensive disk 1529SLI scalable link interface 1530SLI scan-line interleave 1531SLIC system license internal code 1532SLOC source lines of code 1533SLRU segmented LRU 1534SMA smart memory access 1535SMAF system management action field 1536SMAP Simple Mail Access Protocol 1537SMAP supervisor mode access prevention 1538SMART self-monitoring analysis and reporting technology 1539SMB Server Message Block 1540SMB system management bus 1541SMBIOS System Management BIOS 1542SMC system management controller 1543SMD storage module device 1544SMEP supervisor mode execution protection 1545SMF single mode fiber 1546SMI structure of management information 1547SMI system management interrupt 1548SMM system management mode 1549SMP serial management protocol 1550SMP symmetric multiprocessing 1551SMR shingled magnetic recording 1552SMR state machine replication 1553SMT simultaneous multithreading 1554SMTP Simple Mail Transfer Protocol 1555SMU system management unit 1556SNA systems network architecture 1557SNAP Sub-Network Access Protocol 1558SNIA Storage Networking Industry Association 1559SNMP Simple Network Management Protocol 1560SNR signal-to-noise ratio 1561SOA service oriented architecture 1562SOAP Simple Object Access Protocol 1563SOC system on chip 1564SOF start of frame 1565SOH start of header 1566SOHO small office/home office 1567SOL serial over LAN 1568SOM system on module 1569SP service pack 1570SP stack pointer 1571SPA storage pool allocator 1572SPAN switched port analyzer 1573SPARC scalable processor architecture 1574SPARQL SPARQL Protocol and RDF Query Language 1575SPD security policy database 1576SPD serial presence detect 1577SPDIF Sony/Philips digital interface format 1578SPI serial peripheral interface 1579SPI stateful packet inspection 1580SPIR standard portable intermediate representation 1581SPL system interrupt priority level 1582SPL spinlock 1583SPMD single process, multiple data 1584SPR special purpose register 1585SPT sectors per track 1586SQA software quality assurance 1587SQCIF sub quarter common intermediate format 1588SQL Structured Query Language 1589SRAM static random access memory 1590SRC sample rate conversion 1591SRP SCSI RDMA protocol 1592SRR shaped round robin 1593SRTP Secure Real-time Transport Protocol 1594SS self-snoop 1595SS stack segment 1596SSA static single assignment 1597SSAP source service access point 1598SSB single-sideband modulation 1599SSC spread spectrum clock 1600SSD solid state drive 1601SSE streaming SIMD extensions 1602SSFDC solid state floppy disc card 1603SSH secure shell 1604SSI server side includes 1605SSID service set identifier 1606SSTP secure socket tunneling protocol 1607SSL secure sockets layer 1608SSP stack smashing protection 1609STC software thermal control 1610STD state transition diagram 1611STM software transactional memory 1612STOMP Streaming Text Oriented Messaging Protocol 1613STP Spanning Tree Protocol 1614STP shielded twisted pair 1615STRG spanning tree root guard 1616SUN Stanford University Network 1617SUS Single Unix Specification 1618SUT system under test 1619SVC switched virtual circuit 1620SVG scalable vector graphics 1621SVGA Super Video Graphics Array 1622SVI {switch,switched} virtual interface 1623SVM secure virtual machine 1624SVM support vector machine 1625SVR System V Release 1626SVS Separate Virtual Space 1627SWF Shockwave Flash 1628SWIG simplified wrapper [and] interface generator 1629SYR symbol timing recovery 1630TA test assertion 1631TA transmitter address 1632TACACS terminal access controller access-control system 1633TAI international atomic time 1634TAO track at once 1635TAOCP The Art of Computer Programming 1636TAP Test Anything Protocol 1637TAS test and set 1638TB terabyte 1639TBNF transitional backus-naur form 1640TCB trace capture buffer 1641TCB trusted computing base 1642TCC thermal control circuit 1643TCL tool command language 1644TCP Transmission Control Protocol 1645TCQ tagged command queueing 1646TDC time [to] digital converter 1647TDD test-driven development 1648TDD time division duplex 1649TDM time division multiplexing 1650TDMA time division multiple access 1651TDOA time difference of arrival 1652TDP thermal design {point,power} 1653TDR time-domain reflectometry 1654TECO Text Editor and Corrector 1655TEE Trusted Execution Environment 1656TFT thin film transistor 1657TFTP Trivial File Transfer Protocol 1658TIAS try it and see 1659TIFF tagged image file format 1660TITS try it to see 1661TK temporal key 1662TKIP Temporal Key Integrity Protocol 1663TLA top level aggregator 1664TLB translation lookaside buffer 1665TLD top level domain 1666TLER time-limited error recovery 1667TLI transport layer interface 1668TLS thread local storage 1669TLS transport layer security 1670TM Turing machine 1671TM thermal monitor 1672TMG transmogrifier 1673TMDS transition minimized differential signaling 1674TMO timeout 1675TOD time of day 1676TOE TCP offload engine 1677TOFU trust on first use 1678TOS terms of service 1679TOS trusted operating system 1680TOS type of service 1681TOTP time-based one time password 1682TP transaction processing 1683TPI tracks per inch 1684TPM transactions per minute 1685TPM trusted platform module 1686TPR task priority register 1687TPS transactions per second 1688TPS transmission parameters signaling 1689TR task register 1690TR token ring 1691TRL timing recovery loop 1692TRNG true random number generator 1693TS terminal services 1694TS time series 1695TS time stamp 1696TS transport stream 1697TSAN Thread Sanitizer 1698TSC time stamp counter 1699TSD time stamp disable 1700TSDB time series database 1701TSL test, set, lock 1702TSO time sharing option 1703TSO TCP segmentation offload 1704TSO Total Store Ordering 1705TSP Time-Stamp Protocol 1706TSP Tunnel Setup Protocol 1707TSP time synchronization protocol 1708TSP traveling salesman problem 1709TSS task state segment 1710TSV tab-separated values 1711TTL time to live 1712TTL transistor-transistor logic 1713TTM translation table maps 1714TTY teletype 1715TU translation unit 1716TUI {terminal,text-based,textual} user interface 1717TX {transmit out,transmitter} 1718TXG transaction group 1719TZ time zone 1720UAC user {access,account} control 1721UAF use-after-free 1722UART universal asynchronous receiver/transmitter 1723UAT user acceptance testing 1724UB undefined behavior 1725UBSAN Undefined Behavior Sanitizer 1726UC uncacheable 1727UCS uniform-cost search 1728UCS unified computing system 1729UCS universal coded character set 1730UDI uniform driver interface 1731UDMA ultra DMA 1732UDO ultra density optical 1733UDP User Datagram Protocol 1734UDS Unix Domain Socket 1735UEFI unified extensible firmware interface 1736UFO UDP fragmentation offload 1737UFS Unix File System 1738UGA universal graphics adapter 1739UI unit interval 1740UI user interface 1741UICC universal integrated circuit card 1742UID unique identifier 1743UID user identifier 1744UL upload 1745UMA uniform memory access 1746UMA upper memory area 1747UMB upper memory block 1748UML unified modeling language 1749UMPC ultra-mobile PC 1750UPNP universal plug and play 1751UPS uninterruptible power supply 1752URI uniform resource identifier 1753URL uniform resource locator 1754URN uniform resource name 1755USART universal synchronous/asynchronous receiver/transmitter 1756USB universal serial bus 1757USWC uncacheable speculative write combining 1758UT unit test 1759UTC coordinated universal time 1760UTF unicode transformation formats 1761UTP unshielded twisted pair 1762UTS UNIX time-sharing 1763UUCP Unix-to-Unix Copy Protocol 1764UUID universally unique identifier 1765UUOC useless use of cat 1766UUT unit under test 1767UX user experience 1768VA vertical alignment 1769VA virtual address 1770VA volt-ampere 1771VAX virtual address extension 1772VB Visual Basic 1773VBR volume boot record 1774VCA variable-gain amplifier 1775VCC common collector voltage 1776VCCP virtual chassis control protocol 1777VCF voltage-controlled filter 1778VCM virtual channel memory 1779VCO voltage-controlled oscillator 1780VCP virtual chassis port 1781VCS version control system 1782VDPAU Video Decode and Presentation API for Unix 1783VES virtual execution system 1784VESA Video Electronics Standards Association 1785VFO variable-frequency oscillator 1786VFS virtual file system 1787VG volume group 1788VGA Video Graphics Array 1789VHDCI very high density cable interconnect 1790VID {VLAN,voltage level} identifier 1791VIM Vi IMproved 1792VIPT virtually indexed, physically tagged 1793VIVT virtually indexed, virtually tagged 1794VLAN virtual local area network 1795VLD variable-length decoding 1796VLIW very long instruction word 1797VLSI very large scale integration 1798VLSM variable length subnet mask 1799VM virtual {machine,memory} 1800VME virtual mode extension 1801VMX vector multimedia extensions 1802VMX virtual machine extensions 1803VNC virtual network computing 1804VOD video on demand 1805VPD vital product data 1806VPN virtual private network 1807VPWS virtual private wire service 1808VR virtual reality 1809VRAM video random access memory 1810VRF virtual routing and forwarding 1811VRM voltage regulator module 1812VROC Virtual RAID On CPU 1813VRRP Virtual Router Redundancy Protocol 1814VSTP VLAN Spanning Tree Protocol 1815VTP VLAN Trunking Protocol 1816VXFS Veritas file system 1817VXVM Veritas volume manager 1818W watt 1819W3C World Wide Web Consortium 1820WAFL write anywhere file layout 1821WAMP Web Application Messaging Protocol 1822WAN wide area network 1823WAP Wireless Application Protocol 1824WAP wireless access point 1825WDM Windows Driver Model 1826WDDM Windows Display Driver Model 1827WDT watchdog timer 1828WEP Wired Equivalent Privacy 1829WFI wait for interrupt 1830WFQ weighted fair queuing 1831WH write hit 1832WHEA Windows hardware error architecture 1833WIFI wireless fidelity 1834WLAN wireless local area network 1835WM write miss 1836WMF Windows meta file 1837WMI Windows Management Instrumentation 1838WOL Wake-on-LAN 1839WOM Wake-on-Modem 1840WOR Wake-on-Ring 1841WORM write once read many 1842WP WordPerfect 1843WP word processor 1844WP write protect 1845WPA Wi-Fi Protected Access 1846WPA2 Wi-Fi Protected Access II 1847WPAD web proxy auto-discovery protocol 1848WPS Wi-Fi Protected Setup 1849WRAM window random access memory 1850WS web services 1851WTC write through caching 1852WTD weighted tail drop 1853WWAN wireless wide area network 1854WWW world wide web 1855WYSIAYG what you see is all you get 1856WYSIWYG what you see is what you get 1857XBAR crossbar 1858XDMCP X Display Manager control protocol 1859XER XML encoding rules 1860XGA Extended Graphics Array 1861XHR XMLHttpRequest 1862XIP execute in place 1863XML Extensible Markup Language 1864XNA XNA's not acronymed 1865XNS Xerox network systems 1866XOR exclusive or 1867XP extreme programming 1868XSI X/Open System Interface 1869XSL extensible stylesheet language 1870XSLT extensible stylesheet language transformations 1871XSS cross site scripting 1872XT extended technology 1873XTACACS extended terminal access controller access-control system 1874XTI X/Open transport interface 1875XUL XML user interface language 1876YACC yet another compiler compiler 1877YAML YAML ain't markup language 1878YANG yet another next generation 1879YAWPFAPR you are welcome; please file a problem report 1880YP Yellow Pages 1881YTD year to date 1882ZAP ZFS attribute processor 1883ZBR zone bit recording 1884ZFOD zero-filled on demand 1885ZFS zettabyte file system 1886ZIF zero insertion force 1887ZIFS zero insertion force socket 1888ZIL ZFS intent log 1889ZMA zone multicast address 1890ZOI zero one infinity 1891ZOI zone of influence 1892ZPL ZFS Posix layer 1893ZVOL ZFS Volume 1894