acronyms.comp revision 1.338
1$NetBSD: acronyms.comp,v 1.338 2023/02/28 19:08:37 fcambus 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 47ALS ambient light sensor 48ALSA advanced Linux sound architecture 49ALU arithmetic and logical unit 50ALUA asymmetric logical unit access 51AM access method 52AM alignment mask 53AM amplitude modulation 54AMD Advanced Micro Devices Inc 55AMDD Agile model-driven development 56AMI alternate mark inversion 57AMP asymmetric multiprocessing 58AMQP advanced message queuing protocol 59AMT active management technology 60AN Arabic number 61ANR application not responding 62ANSI American National Standards Institute 63AO analog output 64AOC add-on card 65AOL Alert-on-LAN 66AOS add or subtract 67AOT ahead of time 68AP access point 69AP application processor 70APFS Apple file system 71API application programming interface 72APEI ACPI platform error interface 73APIC advanced programmable interrupt controller 74APIPA automatic private IP addressing 75APM advanced power management 76APM application performance management 77APU accelerated processing unit 78APT advanced persistent threat 79AQM active queue management 80ARAT always running APIC timer 81ARC adaptive replacement cache 82ARC Advanced RISC Computing 83ARC automatic reference counting 84ARM Advanced RISC Machines 85ARP Address Resolution Protocol 86ARPA Advanced Research Projects Agency 87ARQ automatic repeat request 88ARR address range register 89ARU audio response unit 90AS autonomous system 91ASA Adaptive Security Appliance 92ASAN Address Sanitizer 93ASC advanced smart cache 94ASCII American Standard Code for Information Interchange 95ASD agile software development 96ASE advanced software environment 97ASF alert standard format 98ASIC application-specific integrated circuit 99ASK amplitude shift keying 100ASLR address space layout randomization 101ASN autonomous system number 102ASP active server pages 103ASP auxiliary storage pool 104ASPM active state power management 105ASQ automated software quality 106ASR address space register 107ASR Apple software restore 108AST abstract syntax tree 109AST asynchronous system trap 110AT access time 111AT advanced technology 112ATA advanced technology attachment 113ATAPI advanced technology attachment packet interface 114ATC address translation cache 115ATF ARM trusted firmware 116ATF automated testing framework 117ATM asynchronous transfer mode 118ATX advanced technology extended 119AV anti virus 120AVB audio video bridging 121AVL Adelson-Velsky-Landis 122AVX advanced vector extensions 123AWDL Apple wireless direct link 124BA byte align 125BAL basic assembly language 126BAR base address register 127BBS bulletin board system 128BCC blind carbon copy 129BCD binary coded decimal 130BCH boot console handler 131BCR byte count register 132BCS base configuration space 133BD baud 134BDD binary decision diagram 135BDI bit deinterleave 136BDUF big design up front 137BEDO burst extended data output 138BER basic encoding rules 139BER bit error {rate,ratio} 140BERT boot error record table 141BFD bidirectional forwarding detection 142BFD binary {file,format} descriptor 143BFKL big fscking kernel lock 144BFS breadth-first search 145BFT binary file transfer 146BGA ball grid array 147BGP Border Gateway Protocol 148BGPSEC BGP Security 149BIND Berkeley Internet Name Daemon 150BIOS Basic Input/Output System 151BIOS built-in operating system 152BIST built-in self-test 153BIU bus interface unit 154BKDG BIOS and kernel developer's guide 155BLAS basic linear algebra subprograms 156BLC back light control 157BLE Bluetooth low energy 158BLOB binary large object 159BM bus master 160BMC baseboard management controller 161BMP basic multilingual plane 162BMP bitmap image file 163BMIC bus master interface controller 164BN boundary neutral 165BNF Backus-Naur form 166BO binary output 167BOF beginning of file 168BOM beginning of message 169BOM byte order mark 170BP base pointer 171BP boot processor 172BPB BIOS parameter block 173BPDU bridge protocol data unit 174BPF Berkeley Packet Filter 175BPI bits per inch 176BPM business process modelling 177BPS bits per second 178BPSK binary phase shift keying 179BQS Berkeley quality software 180BRE basic regular expression 181BS backspace 182BS binary sequence 183BSA basic service area 184BSD Berkeley Software Distribution 185BSDP Boot Service Discovery Protocol 186BSF bit scan forward 187BSOD blue screen of death 188BSP binary space partition 189BSP board support package 190BSP bootstrap processor 191BSR bit scan reverse 192BSS basic service set 193BSS block started by symbol 194BSSID basic service set identifier 195BT BitTorrent 196BT Bluetooth 197BT bit test 198BTC bit test [and] complement 199BTM bus transport mechanism 200BTR bit test [and] reset 201BTS bit test [and] set 202BTS bug tracking system 203BW bandwidth 204BWM block-write mode 205BUAG big ugly ASCII graphic 206CA certificate authority 207CACLS change access control lists 208CAD computer-aided design 209CAM computer assisted manufacturing 210CAM conditional access module 211CAM content addressable memory 212CARP Common Address Redundancy Protocol 213CAS column address strobe 214CAS compare and swap 215CAS computer algebra system 216CASE computer aided software engineering 217CAU control access unit 218CAV constant angular velocity 219CBC cipher block chaining 220CBR constant bit rate 221CC carbon copy 222CCC Chaos Computer Club 223CCD charge coupled device 224CCI co-channel interferer 225CCNUMA cache-coherent non-uniform memory access 226CCTL command completion time limit 227CD cache disable 228CD compact disc 229CDDA compact disc digital audio 230CDL compiler description language 231CDMA code division multiple access 232CDN content delivery network 233CDP Cisco Discovery Protocol 234CDRAM cache dynamic random access memory 235CER canonical encoding rules 236CE customer edge 237CF compact flash 238CFB cipher feedback 239CFG context-free grammar 240CFG control-flow graph 241CFI control-flow integrity 242CG control gate 243CGA Color Graphics Adapter 244CGI common gateway interface 245CGN Carrier-Grade NAT 246CHAP Challenge-Handshake Authentication Protocol 247CHFS chip file system 248CHS cylinder/head/sector 249CI continuous integration 250CI {common,component} interface 251CIA confidentiality, integrity, availability 252CIDR Classless Inter-Domain Routing 253CIF common intermediate format 254CIFS Common Internet File System 255CIL common intermediate language 256CIR carrier-to-interference ratio 257CIS contact image sensor 258CISC complex instruction set {computer,computing} 259CJK Chinese, Japanese, [and] Korean 260CLF common log format 261CLI command line interface 262CLI common language infrastructure 263CLR common language runtime 264CLS common language specification 265CLTT closed loop thermal throttling 266CLUT color look-up table 267CLV constant linear velocity 268CM configuration management 269CMA concert multithread architecture 270CMC chassis management controller 271CMC corrected machine check 272CMS {configuration,content,course} management system 273CMI control {management,method} interface 274CMOS complementary metal-oxide-semiconductor 275CMP chip multi-processing 276CMS content management system 277CMYK cyan magenta yellow black 278CN {common,canonical} name 279CNC computer numerical control 280CNR carrier-to-noise ratio 281COA change of authority 282COF current operating frequency 283COFDM coded orthogonal frequency division multiplexing 284COFF common object file format 285COM component object model 286COM computer on module 287COMA cache-only memory architecture 288CORBA common object request broker architecture 289COS class of service 290COW copy-on-write 291CP continuous pilot 292CPA chosen-plaintext attack 293CPB core performance boost 294CPC central processor complex 295CPC cpu performance counters 296CPE common phase error 297CPE common platform enumeration 298CPER common platform error record 299CPG clock pulse generator 300CPI cycles per instruction 301CPL current privilege level 302CPLD complex programmable logic device 303CPP C preprocessor 304CPS characters per second 305CPS continuation-passing style 306CPT command pass through 307CPU central processing unit 308CR carriage return 309CRC cyclic redundancy check 310CRL carrier recovery loop 311CRLF carriage return line feed 312CSPM cloud security posture management 313CSU C start up 314CRT cathode ray tube 315CRTP curiously recurring template pattern 316CRUD create, read, update, and delete 317CS cable select 318CS chip select 319CS code segment 320CS computer science 321CSDL {common,conceptual} schema definition language 322CSI channel state information 323CSI common system interface 324CSMA carrier sense multiple access 325CSMA/CA carrier sense multiple access with collision avoidance 326CSMA/CD carrier sense multiple access with collision detection 327CSP communicating sequential processes 328CSP content security policy 329CSP constrain satisfaction problems 330CSP cryptographic service provider 331CSR control [and] status registers 332CSRG Computer Systems Research Group 333CSS cascading style sheets 334CST common spanning tree 335CSV comma-separated values 336CTF compact c type format 337CTM close to metal 338CTR counter [mode] 339CTS clear to send 340CTS common type system 341CUA common user access 342CUT coordinated universal time 343CV control voltage 344CVE common vulnerabilities and exposures 345CVS Concurrent Versions System 346DA destination address 347DAA distributed application architecture 348DAAP digital audio access protocol 349DAB digital audio broadcasting 350DAC digital [to] analog converter 351DAC discretionary access control 352DAD duplicate address detection 353DANE DNS-based Authentication of Named Entities 354DAO disk at once 355DAP Directory Access Protocol 356DAT digital audio tape 357DAT dynamic acceleration technology 358DB database 359DBA database administrator 360DBA dynamic bandwidth allocation 361DBB data bus buffer 362DBC design by contract 363DBL dynamic buffer limiting 364DBMS database management system 365DBS database server 366DC data center 367DC direct current 368DCC Direct Client-to-Client 369DCC direct cable connect 370DCD data carrier detect 371DCE data control equipment 372DCE distributed computing environment 373DCIM data center infrastructure management 374DCIM digital camera images 375DCL Digital Command Language 376DCOM distributed component object model 377DCOP Desktop COmmunication Protocol 378DCS data collection systems 379DCT discrete cosine transform 380DCU data cache unit 381DDC display data channel 382DDE dynamic data exchange 383DDI device drivers interface 384DDK device driver kit 385DDL data description language 386DDR double data rate 387DDS direct digital sound 388DDWG Digital Display Working Group 389DE debugging extensions 390DE desktop environment 391DEA data encryption algorithm 392DEC Digital Equipment Corporation 393DEK data encryption key 394DEP data execution prevention 395DER distinguished encoding rules 396DES Data Encryption Standard 397DF don't fragment 398DFA deterministic finite automaton 399DFC data flow control 400DFS depth first search 401DFS distributed file system 402DFSAN Data Flow Sanitizer 403DFT diagnostic function test 404DFT discrete Fourier transform 405DGL data generation language 406DGEMM double precision general matrix multiply 407DH Diffie-Hellman 408DHCP Dynamic Host Configuration Protocol 409DIA dedicated Internet access 410DIB device independent bitmap 411DIFS distributed inter-frame space 412DIMM dual inline memory module 413DIRT design in real time 414DKI driver/kernel interface 415DL diode logic 416DL discrete logarithm 417DL download 418DLCI data link connection identifier 419DLE data link escape 420DLL dynamic link library 421DLNA digital living network alliance 422DLP discrete logarithm problem 423DMA direct memory access 424DMI desktop management interface 425DMS document management system 426DMT discrete multitone modulation 427DMU data management layer 428DNARD Digital network appliance reference design 429DND drag and drop 430DNLC directory name lookup cache 431DNS Domain Name System 432DNSSEC DNS Security Extensions 433DOE distributed object environment 434DOF data over fibre 435DOM document object model 436DOS denial of service 437DOS disk operating system 438DP DisplayPort 439DPC deferred procedure call 440DPCM differential pulse code modulation 441DPD dead peer detection 442DPI deep packet inspection 443DPI dots per inch 444DPL descriptor privilege level 445DPS Display PostScript 446DPST display power savings technology 447DRAAS disaster recovery as a service 448DRAM dynamic random access memory 449DRBG deterministic random bit generator 450DRI direct rendering infrastructure 451DRM digital rights management 452DRM direct rendering manager 453DRRS display refresh rate switching 454DS debug store 455DS differentiated services 456DS9000 DeathStation 9000 457DS9K DeathStation 9000 458DSA digital signature algorithm 459DSAP destination service access point 460DSB double-sideband modulation 461DSCP differentiated services code point 462DSDT differentiated system descriptor table 463DSF device special file 464DSL dataset and snapshot layer 465DSL digital subscriber line 466DSL domain specific language 467DSLAM digital subscriber line access multiplexer 468DSN delivery status notification 469DSO dynamic shared object 470DSP digital signal processor 471DSSS direct sequence spread spectrum 472DTB device tree blob 473DTC device tree compiler 474DTD document type definition 475DTE data terminal equipment 476DTE dumb terminal emulator 477DTL diode-transistor logic 478DTLS datagram transport layer security 479DTS device tree source 480DTS digital thermal sensor 481DUT device under test 482DVB digital video broadcasting 483DVCS distributed version control system 484DVD digital versatile disc 485DVFS dynamic voltage and frequency scaling 486DVI device independent 487DVI Digital Visual Interface 488DVR digital video recorder 489E-XER extended XML encoding rules 490EABI embedded-application binary interface 491EAI Email Address Internationalization 492EAI Enterprise Application Integration 493EAP Extensible Authentication Protocol 494EAPOL EAP over Lan 495EAV entity-attribute-value model 496EAV ethernet audio/video bridging 497EBCDIC Extended Binary Coded Decimal Interchange Code 498EBDA Extended BIOS Data Area 499EBNF extended backus-naur form 500EBR extended boot record 501EC elliptic curve 502ECC elliptic curve cryptography 503ECC error correction code 504ECDH elliptic curve Diffie-Hellman 505ECDL elliptic curve discrete logarithm 506ECDLP elliptic curve discrete logarithm problem 507ECDSA elliptic curve digital signature algorithm 508ECL emitter-coupled logic 509ECN explicit congestion notification 510ECP enhanced capability port 511ECS enhanced chip set 512ECS extended configuration space 513EDAC error detection and correction 514EDAT enhanced dynamic acceleration technology 515EdDSA Edwards curve digital signature algorithm 516EDGE explicit data graph execution 517EDID extended display identification data 518EDO extended data out 519EDS electronical data sheet 520EDSAC electronic delay storage automatic calculator 521EDVAC electronic discrete variable automatic computer 522EEE energy efficient ethernet 523EEE embrace, extend, extinguish 524EEPROM electrically erasable programmable read only memory 525EFI extensible firmware interface 526EFL emitter follower logic 527EFM eight to fourteen modulation 528EFS extent file system 529EGA Enhanced Graphics Adapter 530EGP exterior gateway protocol 531EH extension header 532EIDE enhanced IDE 533EISA extended industry standard architecture 534EINJ error injection table 535ELF executable and linking format 536ELS entry level system 537EMI electro-magnetic interference 538EMP electro-magnetic pulse 539EMR electro-magnetic radiation 540EMACS Editor MACroS 541ENIAC electronic numerical integrator and computer 542EOF end of file 543EOI end of interrupt 544EOIS end of interactive support 545EOL end of life 546EOL end of line 547EOT end of transmission 548EPIC explicitly parallel instruction computing 549EPP enhanced parallel port 550EPRML extended partial response, maximum likelihood 551EPROM erasable programmable read only memory 552EPT extended page tables 553ERC error recovery control 554ERD emergency recovery disk 555ERD entity relationship diagram 556ERE extended regular expression 557ERST error record serialization table 558ESAN Efficiency Sanitizer 559ESB enterprise service bus 560ESDI enhanced small disk interface 561ESDRAM enhanced synchronous dynamic random access memory 562ESI enclosure services interface 563ESS electronic switching system 564ESS extended service set 565ESSID extended service set identifier 566EST enhanced speedstep 567ETL extract, transform, load 568EU execution unit 569EULA end user license agreement 570FAT file allocation table 571FBRAM frame buffer random access memory 572FCIF full common intermediate format 573FCL fiber channel loop 574FCS frame check sequence 575FDC floppy disk controller 576FDD floppy disk drive 577FDDI fiber distributed data interface 578FDE full disk encryption 579FDT flattened device tree 580FEA finite element analysis 581FEC forward error correction 582FET field-effect transistor 583FF finite field 584FF form feed 585FFDH finite-field Diffie-Hellman 586FFH functional fixed hardware 587FFI foreign function interface 588FFM focus follows mouse 589FFS Fast File System 590FFS find first set 591FFT fast Fourier transform 592FG floating gate 593FHRP first hop redundancy protocol 594FHSS frequency hop spread spectrum 595FID frequency identifier 596FIFO first in, first out 597FILO first in, last out 598FIPS Federal Information Processing Standards 599FIR fast infrared 600FLOPS floating [point] operations per second 601FLOSS free/libre/open source software 602FM frequency modulation 603FMR false match rate 604FOSS free/open source software 605FPGA field programmable gate array 606FPM fast page mode 607FPR floating point register 608FPU floating point unit 609FQDN fully qualified domain name 610FRR false rejection rate 611FRU field replaceable unit 612FS file system 613FSB front side bus 614FSCK file system check 615FSF Free Software Foundation 616FSK frequency shift keying 617FSM finite-state machine 618FTA fault tree analysis 619FTL flash translation layer 620FTP File Transfer Protocol 621FTPS File Transfer Protocol Secure 622FTTH fiber to the home 623FUS fast user switching 624FWH firmware hub 625FWS folding white space 626GAL generic array logic 627GARP generic attribute registration protocol 628GAS generic address structure 629GC garbage collector 630GCC GNU Compiler Collection 631GCM Galois counter mode 632GCR group-coded recording 633GDI Graphics Device Interface 634GDT global descriptor table 635GECOS general comprehensive operating supervisor 636GEM graphics environment manager 637GEM graphics execution manager 638GEMM general matrix multiply 639GENA general event notification architecture 640GHC Glasgow Haskell compiler 641GHES generic hardware error source 642GIC generic interrupt controller 643GID group identifier 644GIF graphics interchange format 645GLBP gateway load balancing protocol 646GMCH graphics and memory controller hub 647GNU GNU's Not Unix 648GOP graphics output protocol 649GOT global offset table 650GPE general purpose event 651GPF general protection fault 652GPG GNU Privacy Guard 653GPL [GNU] General Public License 654GPR general purpose register 655GPS generalized processor sharing 656GPT GUID partition table 657GPU graphics processing unit 658GR golden ratio 659GRE generic routing encapsulation 660GRO generic receive offload 661GSI global system interrupt 662GSO generic send offload 663GUI graphical user interface 664GUID globally unique identifier 665GUS Gravis UltraSound 666GVFS git virtual file system 667HA high availability 668HAL hardware abstraction layer 669HAT hashed array tree 670HATEOAS hypermedia as the engine of application state 671HBA host bus adapter 672HCF halt and catch fire 673HCI host controller interface 674HCI human-computer interaction 675HCL hardware compatibility list 676HDCP High-bandwidth Digital Content Protection 677HDD hard disk drive 678HDL hardware description language 679HDMI High-Definition Multimedia Interface 680HDTV high-definition television 681HECI host embedded controller interface 682HEST hardware error source table 683HEVC high efficiency video coding 684HF high frequency 685HFM highest frequency mode 686HFS hierarchical file system 687HID human interface device 688HKDF HMAC-based key derivation function 689HKP HTTP Keyserver Protocol 690HLL high-level language 691HMA high memory area 692HMI human-machine interface 693HOOD hierarchical object oriented design 694HOTP HMAC-based one time password 695HP Hewlett-Packard 696HPC high performance computing 697HPD hot plug detection 698HPET high precision event timer 699HSM hardware security module 700HSM hierarchical storage management 701HSRP hot standby router protocol 702HT hyper-threading 703HTC hardware thermal control 704HTCC high temperature co-fired ceramic 705HTML HyperText Markup Language 706HTT hyper-threading technology 707HTTP Hypertext Transfer Protocol 708HTTPS Hypertext Transfer Protocol Secure 709HVM hardware virtual machine 710HVDS High-Voltage Differential Signaling 711HWASAN Hardware-assisted Address Sanitizer 712HZ Hertz 713I2O intelligent input/output 714IA information assurance 715IAAS infrastructure as a service 716IANA Internet Assigned Numbers Authority 717IBC iterated block cipher 718IBM International Business Machines 719IBPI international blinking pattern interpretation 720IBS instruction based sampling 721IBSS independent basic service set 722IC integrated circuit 723ICA independent computer architecture 724ICACLS integrity control access control lists 725ICB Internet Citizen's Band 726ICE in-circuit emulator 727ICE internal compiler error 728ICH I/O controller hub 729ICMP Internet Control Message Protocol 730ICT information and communications technology 731ICW initialization command word 732IDA Intel dynamic acceleration 733IDCMP Intuition direct communication message port 734IDCT inverse discrete cosine transform 735IDE integrated development environment 736IDE integrated drive electronics 737IDPS intrusion detection [and] prevention system 738IDRP inter-domain routing protocol 739IDS intrusion detection system 740IDT interrupt descriptor table 741IE Internet Explorer 742IEC International Electrotechnical Commission 743IEEE Institute of Electrical and Electronics Engineers 744IESG Internet Engineering Steering Group 745IETF Internet Engineering Task Force 746IF intermediate frequency 747IFCM isochronous flow control mode 748IFF Interchange File Format 749IFS internal field separator 750IGD Internet gateway device 751IGMP Internet Group Management Protocol 752IGP interior gateway protocol 753IHV independent hardware vendor 754IKE Internet key exchange 755ILM internal loopback mode 756ILOM integrated lights-out management 757ILP instruction level parallelism 758IM instant messaging 759IME input method editor 760IMAP Internet Message Access Protocol 761IMC integrated memory controller 762IMCR interrupt mode configuration register 763IMR interrupt mask register 764IMS information management system 765IMSI international mobile subscriber identity 766INCITS InterNational Committee for Information Technology Standards 767INODE index node 768IO input/output 769IOCTL input/output control 770IOM input/output managers 771IOMMU input/output memory management unit 772IOT Internet of Things 773IP Internet Protocol 774IP intellectual property 775IPC instructions per cycle 776IPC interprocess communication 777IPCF interprocess communication facility 778IPE integrated programming environment 779IPI intelligent peripheral interface 780IPI interprocessor interrupt 781IPL Initial Program Load 782IPL Interrupt Priority Level 783IPMB Intelligent Platform Management Bus 784IPMI Intelligent Platform Management Interface 785IPNG Internet Protocol, Next Generation 786IPS in-plane switching 787IPS intrusion prevention system 788IPSEC Internet Protocol Security 789IRC Internet Relay Chat 790IRDA infrared data association 791IRDP ICMP Router Discovery Protocol 792IRQ interrupt request 793IRQL interrupt request level 794IRR interrupt request register 795IRTF Internet Research Task Force 796IS information system 797ISA industry standard architecture 798ISA instruction set architecture 799ISE instant secure erase 800ISDN integrated services digital network 801ISI inter-symbol interference 802ISL initial system load 803ISM industrial, scientific, [and] medical 804ISMS information system management system 805ISN initial serial number 806ISO International Standards Organization 807ISOC Internet Society 808ISP Internet service provider 809ISR in-service register 810ISR interrupt service routine 811IST internal spanning tree 812IST interrupt stack table 813ISV independent software vendor 814IT information technology 815ITB Intel Turbo Boost 816ITIL information technology infrastructure library 817ITP in-target probe 818ITSM IT service management 819IV initialization vector 820IVT interrupt vector table 821JBOD just a bunch of disks 822JCL Job Control Language 823JFET junction [gate] field-effect transistor 824JIT just in time 825JPEG Joint Photographic Experts Group 826JRE Java Runtime Environment 827JSON JavaScript Object Notation 828JTAG joint test action group 829KASAN Kernel Address Sanitizer 830KASLR kernel address space layout randomization 831KB keyboard 832KB kilobyte 833KBD keyboard 834KBD kilobaud 835KCS keyboard controller style 836KLOC thousand lines of code 837KMS kernel-mode setting 838KPI kernel programming interface 839KVA kernel virtual address 840KVM kernel virtual machine 841KVM kernel virtual memory 842KVM keyboard, video, [and] mouse 843L2CAP link layer control and adaptation protocol 844LAG link aggregation group 845LAMP Linux Apache MySQL {Perl,PHP,Python} 846LAN local area network 847LAPIC local advanced programmable interrupt controller 848LAR load access rights 849LBA logical block addressing 850LBNF labeled backus-naur form 851LBS location-based service 852LCD liquid crystal display 853LCP link control protocol 854LDA local delivery agent 855LDAP Lightweight Directory Access Protocol 856LDR light-dependent resistor 857LDT local descriptor table 858LE logical extent 859LED light emitting diode 860LELL low energy link layer 861LER label edge router 862LF line feed 863LF low frequency 864LFM lowest frequency mode 865LFN long file names 866LFO low-frequency oscillation 867LFS log-structured file system 868LFU least frequently used 869LHP loop heat pipe 870LIF logical interchange format 871LIFO last in, first out 872LILO LInux LOader 873LILO last in, last out 874LINT local interrupt 875LIR local Internet registry 876LISP LISt Processor 877LISP Locator/ID Separation Protocol 878LKM {Linux,loadable} kernel module 879LKML Linux kernel mailing list 880LL load linked 881LL/SC load linked/store conditional 882LLC logical link control 883LLD low-level design 884LLDD low-level design document 885LLDP link layer discovery protocol 886LLF low level format 887LLMNR link-local multicast name resolution 888LLVM Low Level Virtual Machine 889LM long mode 890LMCE local machine check exception 891LMI local management interface 892LMM link management mode 893LMP link management protocol 894LNO loop nest optimization 895LOC lines of code 896LOM lights-out management 897LPE Linux performance events 898LPC low pin count 899LPS local positioning system 900LRC longitudinal redundancy check 901LRM left-to-right mark 902LRO left-to-right override 903LRU least recently used 904LS link state 905LSAN Leak Sanitizer 906LSB Linux standards base 907LSB least significant {bit,byte} 908LSI large scale integration 909LSL load segment limit 910LSM log structured merge 911LSN Large Scale NAT 912LSN log sequence number 913LSO large send offload 914LSR label switch router 915LTCC low temperature co-fired ceramic 916LTO linear tape-open 917LTO link time optimization 918LTR left to right 919LTR load task register 920LTR letter(-sized paper) 921LTS long term support 922LUA Lua Uppercase Accident 923LUN logical unit number 924LV logical volume 925LVM logical volume management 926LVT local vector table 927LVDS Low-Voltage Differential Signaling 928LWP light-weight process 929LZSS Lempel Ziv Storer Szymanski 930LZW Lempel Ziv Welch 931MAB MAC authentication bypass 932MAC mandatory access control 933MAC {media,medium} access control 934MAC message authentication {check,code} 935MADT multiple APIC descriptor table 936MAMR microwave-assisted magnetic recording 937MB megabyte 938MBA multi-boot agent 939MBR master boot record 940MBS megabits per second 941MC memory controller 942MCA machine check architecture 943MCA MicroChannel architecture 944MCC multiversion concurrency control 945MCE machine check exception 946MCGA Multi-Color Graphics Array 947MCH memory controller hub 948MCLAG multi-chassis link aggregation group 949MCM multi-chip module 950MCQ memory controlled queue 951MD machine-dependent 952MD MiniDisc 953MD-SAL model-driven service abstraction layer 954MDA mail delivery agent 955MDA Monochrome Display Adapter 956MDC Management Data Clock 957MDI Medium Dependent Interface 958MDI-X Medium Dependent Interface Crossover 959MDIO Management Data Input/Output 960MDMX MIPS Digital Media eXtension 961MDRAM multibank dynamic random access memory 962MESI modified, exclusive, shared, invalid 963MFC merge from current 964MFC Microsoft Foundation Classes 965MFM modified frequency modulation 966MFU most frequently used 967MGCP media gateway control protocol 968MHU message handling unit 969MI machine-independent 970MI machine interface 971MIB management information base 972MIC message integrity {check,code} 973MID mobile Internet device 974MIDI musical instrument digital interface 975MIF management information format 976MII media independent interface 977MIM man in the middle 978MIMD multiple instruction, multiple data 979MIME Multipurpose Internet Mail Extensions 980MIMO multiple input multiple output 981MIPS million instructions per second 982MIPS Microprocessor without Interlocked Pipeline Stages 983MISD multiple instruction, single data 984MIT Massachusetts Institute of Technology 985MITM man in the middle 986ML machine language 987ML machine learning 988ML mailing list 989ML markup language 990ML maximum likelihood 991MLAG multi-chassis link aggregation group 992MLC multi-level cell 993MLD multicast listener discovery 994MLHP micro loop heat pipe 995MMF multi-mode fiber 996MMIC monolithic microwave integrated circuit 997MMIO memory mapped input/output 998MMORPG massive multiplayer online role playing game 999MMRP multiple MAC registration protocol 1000MMU memory management unit 1001MMX matrix math extension 1002MMX multimedia extension 1003MMX multiple math extension 1004MO magneto-optical 1005MOESI modified, owned, exclusive, shared, invalid 1006MOF maximum operating frequency 1007MOSFET metal-oxide-semiconductor field-effect transistor 1008MOSI modified, owned, shared, invalid 1009MP multi-platform 1010MP multiplayer 1011MP {multiprocessing,multiprocessor} 1012MPEG moving picture experts group 1013MPI message passing interface 1014MPLS Multiprotocol Label Switching 1015MPP massively parallel processor 1016MPS memory pool system 1017MPS multiprocessor specification 1018MQTT Message Queuing Telemetry Transport 1019MR modem ready 1020MRO method resolution order 1021MRP multiple registration protocol 1022MRU most recently used 1023MS Microsoft 1024MSAN Memory Sanitizer 1025MSB most significant {bit,byte} 1026MSC message sequence chart 1027MSE mean square error 1028MSF minutes seconds frames 1029MSI message signaled interrupt 1030MSI modified, shared, invalid 1031MSR {machine state,model-specific} register 1032MSS maximum segment size 1033MSTP Multiple Spanning Tree Protocol 1034MT machine translation 1035MTA mail transfer agent 1036MTBF mean time between failures 1037MTP media transfer protocol 1038MTRR memory type range register 1039MTTF mean time to failure 1040MTU maximum transmission unit 1041MUA mail user agent 1042MUD multi-user domain 1043MVCC multiversion concurrency control 1044MVR multicast VLAN registration 1045MVRP multiple VLAN registration protocol 1046MWE module width encoding 1047MX mail exchange 1048NACK negative acknowledgement 1049NAK negative acknowledgement 1050NAN neighbor awareness networking 1051NAN not a number 1052NAPT Network Address Port Translation 1053NAS network attached storage 1054NAT network address translation 1055NAV network allocation vector 1056NC numerical control 1057NC-SI network controller sideband interface 1058NCO numerically-controlled oscillator 1059NCP Network Control Protocol 1060NCSI network connectivity status indicator 1061NCQ native command queuing 1062ND neighbor discovery 1063NDFA nondeterministic finite automaton 1064NDIS network driver interface specification 1065NE numeric error 1066NEWS Network extensible Window System 1067NFA nondeterministic finite automaton 1068NFC near-field communication 1069NFCI no functional change intended 1070NFS network file system 1071NFV network function virtualization 1072NIA next instruction address 1073NIC network information center 1074NIC network interface card 1075NIDS network intrusion detection system 1076NIP network interface protocol 1077NIPS network intrusion prevention system 1078NIS network information service 1079NIST National Institute of Standards and Technology 1080NLS native language support 1081NMI non-maskable interrupt 1082NNTP Network News Transfer Protocol 1083NMR nonce-misuse resistance 1084NOC network operations center 1085NOP no operation 1086NOS network operating system 1087NP nondeterministic polynomial time 1088NRND not recommended for new designs 1089NRZ non-return to zero 1090NSA nation-state adversary 1091NSA no such agency 1092NSA National Security Agency 1093NTM non-deterministic Turing machine 1094NTP Network Time Protocol 1095NUMA non-uniform memory access 1096NURBS non-uniform rational basis spline 1097NVMM NetBSD Virtual Machine Monitor 1098NVMM non-volatile main memory 1099NVRAM non-volatile random access memory 1100NW not write-through 1101NX no execute 1102OAEP optimal asymmetric encryption padding 1103OAM operations, administration, and {management,maintenance} 1104OBO off by one 1105OBOE off by one error 1106OCL object constraint language 1107OCR optical character recognition 1108ODE offline device environment 1109ODI open data-link interface 1110ODM object data manager 1111ODCM on-demand clock modulation 1112ODMR on-demand mail relay 1113ODT on-die termination 1114OEM original equipment manufacturer 1115OFB output feedback 1116OFDM orthogonal frequency division multiplexing 1117OFET organic field-effect transistor 1118OLAP online analytical processing 1119OLE object linking and embedding 1120OLTP online transaction processing 1121ONFI open nand flash interface 1122OO OpenOffice 1123OO object oriented 1124OOB out of band 1125OOE out of order execution 1126OOM out of memory 1127OOO OpenOffice.org 1128OOP object oriented programming 1129OOPS object oriented programming systems 1130OOSE object oriented software engineering 1131OPM operations per minute 1132OPS operations per second 1133OQL Object Query Language 1134ORB object request broker 1135ORM object-relational mapping 1136OS operating system 1137OSD object-based storage device 1138OSD open source definition 1139OSF open software foundation 1140OSI Open Source Initiative 1141OSI open systems interconnection 1142OSPF open shortest path first 1143OSPM OS power management 1144OSS open sound system 1145OSS open source software 1146OSVW operating system visible workarounds 1147OTP one time password 1148OTP open telecom platform 1149OU organizational unit 1150OUI organizationally unique identifier 1151OWASP Open Web Application Security Project 1152OWL Web Ontology Language 1153P2P PCI to PCI 1154P2P peer to peer 1155PA phase accumulator 1156PA physical address 1157PAAS platform as a service 1158PAC phase-amplitude converter 1159PAE physical address extension 1160PAGP port aggregation protocol 1161PAL phase alternating line 1162PAL programmable array logic 1163PAM pluggable authentication modules 1164PAM pulse amplitude modulation 1165PAP password authentication protocol 1166PAT page attribute table 1167PAT port address translation 1168PATA parallel ATA 1169PAX portable archive exchange 1170PBE pending break encoding 1171PBE programming by example 1172PBR partition boot record 1173PBX private branch exchange 1174PC personal computer 1175PC program counter 1176PCB printed circuit board 1177PCB process control block 1178PCB Protocol Control Block 1179PCBC propagating cipher block chaining 1180PCC Portable C Compiler 1181PCD page-level cache disable 1182PCE path computation element 1183PCE performance-monitor counter enable 1184PCEP Path Computation Element Protocol 1185PCH platform controller hub 1186PCI peripheral component interconnect 1187PCM phase change memory 1188PCM pulse code modulation 1189PCMCIA Personal Computer Memory Card International Association 1190PCP Port Control Protocol 1191PD public domain 1192PDA personal digital assistant 1193PDA pushdown automaton 1194PDAG propositional directed acyclic graph 1195PDB power distribution board 1196PDF portable document format 1197PDM pulse-duration modulation 1198PDN pull-down network 1199PDP page {descriptor,directory} page 1200PDS product data sheet 1201PDU protocol data unit 1202PE protection enable 1203PE provider edge 1204PE portable executable 1205PEAP Protected EAP 1206PECI platform environment control interface 1207PEP protocol extension protocol 1208PER packed encoding rules 1209PFS perfect forward secrecy 1210PGAS partitioned global address space 1211PGE page global enable 1212PGO profile guided optimization 1213PGP Pretty Good Privacy 1214PHB PCI host bridge 1215PHP PHP: Hypertext Preprocessor 1216PIC performance instrumentation counters 1217PIC position independent code 1218PIC programmable interrupt controller 1219PICNIC problem in chair, not in computer 1220PID process id 1221PIE position independent executable 1222PIL Priority Interrupt Level 1223PIM personal information manager 1224PIM platform-independent model 1225PIO programmed input/output 1226PIPT physically indexed, physically tagged 1227PIQ prefetch input queue 1228PIT programmable interrupt timer 1229PIV personal identity verification 1230PIX Private Internet eXchange 1231PKCS public-key cryptography standards 1232PKI public key infrastructure 1233PLC programmable logic controller 1234PLD programmable logic device 1235PLL phase locked loop 1236PLRU pseudo LRU 1237PLT procedure linkage table 1238PLTM package level thermal management 1239PM power management 1240PM {phase,pulse} modulation 1241PMC performance monitoring counters 1242PME power management event 1243PMEG page map entry group 1244PMI performance monitoring infrastructure 1245PMI platform management interrupt 1246PMIC power management integrated circuit 1247PMIO port-mapped input/output 1248PMT photo-multiplier tube 1249PMU performance monitoring units 1250PMU power management unit 1251PNG portable network graphics 1252PNP plug and play 1253POE power over ethernet 1254POF probability of failure 1255POP Post Office Protocol 1256POP power on password 1257POR plan of record 1258POSIX Portable Operating System Interface [for Unix] 1259POST power on self test 1260POTS plain old telephone system 1261POWER Performance Optimization With Enhanced RISC 1262POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1263PP pair programming 1264PPB PCI [to] PCI bridge 1265PPC PowerPC 1266PPC Power Performance Computing 1267PPI pixels per inch 1268PPM pages per minute 1269PPP Point-to-Point Protocol 1270PPPOA Point-to-Point Protocol over ATM 1271PPPOE Point-to-Point Protocol over Ethernet 1272PPR processor programming reference 1273PPT powerpoint 1274PPT punched paper tape 1275PPU physics processing unit 1276PRAM Parameter RAM 1277PRBS pseudorandom bit sequence 1278PRG pseudorandom generator 1279PRF pseudorandom function [family] 1280PRML partial response, maximum likelihood 1281PRN pseudorandom {noise,number} 1282PRNG pseudorandom number generator 1283PROM programmable read only memory 1284PRP pseudorandom permutation 1285PRU Programmable Realtime Unit 1286PS PostScript 1287PSD power spectral density 1288PSE page size extensions 1289PSK phase shift keying 1290PSK pre-shared key 1291PSTN public switched telephone network 1292PSW program status word 1293PTE page table entry 1294PTLA pseudo top level aggregator 1295PTP page table page 1296PTV perceived target value 1297PU processing unit 1298PUC personal unblocking code 1299PUN physical unit number 1300PV physical volume 1301PVC permanent virtual circuit 1302PVG physical volume group 1303PVI protected-mode virtual interrupt 1304PVRST Per-VLAN rapid spanning tree 1305PVST Per-VLAN Spanning Tree 1306PWM pulse width modulation 1307PXE preboot execution environment 1308QA quality assurance 1309QAM quadrature amplitude modulation 1310QAM quality assurance management 1311QBE query by example 1312QC quality control 1313QDI quasi delay insensitive 1314QCIF quarter common intermediate format 1315QOI quality of implementation 1316QOI quick order interface 1317QOS quality of service 1318QVL qualified vendor list 1319R/O read only 1320R/W read/write 1321RA receiver address 1322RA remote assistance 1323RA resource affinity 1324RA router advertisement 1325RAD rapid application development 1326RADIUS remote authentication dial-in user service 1327RAID redundant array of {independent,inexpensive} disks 1328RAM random access memory 1329RAS reliability, availability and serviceability 1330RAS remote access service 1331RAS restartable atomic sequence 1332RAS row address strobe 1333RBF radial basis function 1334RBNF routing backus-naur form 1335RBT red-black tree 1336RC release candidate 1337RC remote control 1338RC run commands 1339RCS Revision Control System 1340RCU read, copy, update 1341RDB Rigid Disk Block 1342RDBMS relational database management system 1343RDF Resource Description Framework 1344RDM relational data model 1345RDMA remote direct memory access 1346RDP remote desktop protocol 1347RDRAM Rambus DRAM 1348RE regular expression 1349REPL read, evaluate, print, loop 1350REST representational state transfer 1351RF radio frequency 1352RFB remote frame buffer 1353RFI radio frequency interference 1354RFO request for ownership 1355RFU reserved for future use 1356RGB red green blue 1357RGBA red green blue alpha 1358RGMII reduced gigabit media independent interface 1359RH read hit 1360RHEL Red Hat Enterprise Linux 1361RHL Red Hat Linux 1362RIB routing information base 1363RIFF Resource Interchange File Format 1364RIP Raster Image Processor 1365RIP Routing Information Protocol 1366RIR regional Internet registry 1367RISC reduced instruction set {computer,computing} 1368RKM ROM Kernel Manual 1369RLE run length encoding 1370RLL run length limited 1371RLO right-to-left override 1372RM read miss 1373RMCP Remote Management Control Protocol 1374RMI remote method invocation 1375RMO Relaxed Memory Ordering 1376RMPM rapid memory power management 1377RMS root mean square 1378RMW read, modify, write 1379RNG random number generator 1380ROM read only memory 1381ROP return-oriented programming 1382RPC remote procedure call 1383RPG Report Program Generator 1384RPKI resource PKI 1385RPL requested privilege level 1386RPM revolutions per minute 1387RPN reverse Polish notation 1388RPVST Rapid Per-VLAN Spanning Tree 1389RR random replacement 1390RR round robin 1391RS relay station 1392RSA Rivest, Shamir, [and] Adleman 1393RSIP Realm Specific IP 1394RSN Robust Secure Network 1395RSS really simple syndication 1396RSS Receive Side Scaling 1397RSS residual sum of squares 1398RSTP Rapid Spanning Tree Protocol 1399RT real time 1400RTC real time clock 1401RTC real time computing 1402RTF rich text format 1403RTL register transfer language 1404RTL resistor-transistor logic 1405RTL right to left 1406RTOS real time operating system 1407RTP Real-time Transport Protocol 1408RTS request to send 1409RTT round trip time 1410RUP rational unified process 1411RW Rabin-Williams 1412RWM read-write memory 1413RX {receive,receiver} 1414S/PDIF Sony/Philips Digital Interface Format 1415SA security advisory 1416SA security association 1417SA source address 1418SA structured analysis 1419SAAS software as a service 1420SABRE Semi-automated business research environment 1421SACD super audio compact disc 1422SAD security association database 1423SAF-TE SCSI accessed fault-tolerant enclosure 1424SAGE Semi-automated ground environment 1425SAL {service,system} abstraction layer 1426SAM serial access memory 1427SAM sum addressed memory 1428SAML security assertion markup language 1429SAN storage area network 1430SAP service access point 1431SAPIC streamlined advanced programmable interrupt controller 1432SASD structured analysis, structured design 1433SASI Shugart Associates System Interface 1434SASL simple authentication [and] security layer 1435SATA serial advanced technology attachment 1436SAX simple API for XML 1437SB sound blaster 1438SBSA server base system architecture 1439SBU standard build unit 1440SC store conditional 1441SCA source code analyzer 1442SCADA supervisory control and data acquisition 1443SCC single chip cloud 1444SCC source code control 1445SCCP skinny call control protocol 1446SCCS Source Code Control System 1447SCI scalable coherent interface 1448SCI system control interrupt 1449SCIM smart common input method 1450SCM software configuration management 1451SCM source code management 1452SCM storage-class memory 1453SCO synchronous connection orientated 1454SCP secure copy 1455SCP system control processor 1456SCPI system control and power interface 1457SCSI Small Computer System Interface 1458SCTP Stream Control Transmission Protocol 1459SDDC software defined data center 1460SDEI software delegated exception interface 1461SDI symbol deinterleave 1462SDK software development kit 1463SDL Simple Declarative Language 1464SDL Simple Direct-media Layer 1465SDLC {software,system,systems} development life cycle 1466SDN software defined networking 1467SDP Session Description Protocol 1468SDR software defined radio 1469SDRAM synchronous dynamic random access memory 1470SDS software defined storage 1471SDT syntax-directed translation 1472SEA synchronous external abort 1473SEGV segmentation violation 1474SED self-encrypting drive 1475SED stream editor 1476SEMB serial ATA enclosure management bridge 1477SEO search engine optimization 1478SES SCSI enclosure services 1479SFC sequential function chart 1480SFI simple firmware interface 1481SFI software fault isolation 1482SFTP SSH File Transfer Protocol 1483SFTP Serial File Transfer Protocol 1484SFTP Simple File Transfer Protocol 1485SGI Silicon Graphics, Inc 1486SGI software generated interrupt 1487SGMII serial gigabit media independent interface 1488SGPIO serial general purpose input/output 1489SGRAM synchronous graphics random access memory 1490SHA secure hash algorithm 1491SICP structure and interpretation of computer programs 1492SIDH supersingular isogeny Diffie-Hellman 1493SIEM security information and event management 1494SIF source input format 1495SIFS short inter-frame space 1496SIM subscriber identity module 1497SIMD single instruction, multiple data 1498SIMM single inline memory module 1499SIP Session Initiation Protocol 1500SIR signal-to-interference ratio 1501SIR slow infrared 1502SISD single instruction, single data 1503SIV synthetic intialization vector 1504SLAAC stateless address auto-configuration 1505SLC single-level cell 1506SLDRAM synchronous-link dynamic random access memory 1507SLED single large expensive disk 1508SLI scalable link interface 1509SLI scan-line interleave 1510SLIC system license internal code 1511SLOC source lines of code 1512SLRU segmented LRU 1513SMA smart memory access 1514SMAF system management action field 1515SMAP Simple Mail Access Protocol 1516SMAP supervisor mode access prevention 1517SMART self-monitoring analysis and reporting technology 1518SMB Server Message Block 1519SMB system management bus 1520SMBIOS System Management BIOS 1521SMC system management controller 1522SMD storage module device 1523SMEP supervisor mode execution protection 1524SMF single mode fiber 1525SMI structure of management information 1526SMI system management interrupt 1527SMM system management mode 1528SMP serial management protocol 1529SMP symmetric multiprocessing 1530SMR shingled magnetic recording 1531SMR state machine replication 1532SMT simultaneous multithreading 1533SMTP Simple Mail Transfer Protocol 1534SMU system management unit 1535SNA systems network architecture 1536SNAP Sub-Network Access Protocol 1537SNIA Storage Networking Industry Association 1538SNMP Simple Network Management Protocol 1539SNR signal-to-noise ratio 1540SOA service oriented architecture 1541SOAP Simple Object Access Protocol 1542SOC system on chip 1543SOF start of frame 1544SOH start of header 1545SOHO small office/home office 1546SOL serial over LAN 1547SOM system on module 1548SP service pack 1549SP stack pointer 1550SPA storage pool allocator 1551SPAN switched port analyzer 1552SPARC scalable processor architecture 1553SPARQL SPARQL Protocol and RDF Query Language 1554SPD security policy database 1555SPD serial presence detect 1556SPDIF Sony/Philips digital interface format 1557SPI serial peripheral interface 1558SPI stateful packet inspection 1559SPL system interrupt priority level 1560SPL spinlock 1561SPMD single process, multiple data 1562SPR special purpose register 1563SPT sectors per track 1564SQA software quality assurance 1565SQCIF sub quarter common intermediate format 1566SQL Structured Query Language 1567SRAM static random access memory 1568SRC sample rate conversion 1569SRP SCSI RDMA protocol 1570SRR shaped round robin 1571SRTP Secure Real-time Transport Protocol 1572SS self-snoop 1573SS stack segment 1574SSA static single assignment 1575SSAP source service access point 1576SSB single-sideband modulation 1577SSC spread spectrum clock 1578SSD solid state drive 1579SSE streaming SIMD extensions 1580SSFDC solid state floppy disc card 1581SSH secure shell 1582SSI server side includes 1583SSID service set identifier 1584SSTP secure socket tunneling protocol 1585SSL secure sockets layer 1586SSP stack smashing protection 1587STC software thermal control 1588STD state transition diagram 1589STM software transactional memory 1590STOMP Streaming Text Oriented Messaging Protocol 1591STP Spanning Tree Protocol 1592STP shielded twisted pair 1593STRG spanning tree root guard 1594SUN Stanford University Network 1595SUS Single Unix Specification 1596SUT system under test 1597SVC switched virtual circuit 1598SVG scalable vector graphics 1599SVGA Super Video Graphics Array 1600SVI {switch,switched} virtual interface 1601SVM secure virtual machine 1602SVM support vector machine 1603SVR System V Release 1604SVS Separate Virtual Space 1605SWF Shockwave Flash 1606SWIG simplified wrapper [and] interface generator 1607SYR symbol timing recovery 1608TA test assertion 1609TA transmitter address 1610TACACS terminal access controller access-control system 1611TAI international atomic time 1612TAO track at once 1613TAOCP The Art of Computer Programming 1614TAP Test Anything Protocol 1615TAS test and set 1616TB terabyte 1617TBNF transitional backus-naur form 1618TCB trace capture buffer 1619TCB trusted computing base 1620TCC thermal control circuit 1621TCL tool command language 1622TCP Transmission Control Protocol 1623TCQ tagged command queueing 1624TDC time [to] digital converter 1625TDD test-driven development 1626TDD time division duplex 1627TDM time division multiplexing 1628TDMA time division multiple access 1629TDOA time difference of arrival 1630TDP thermal design {point,power} 1631TDR time-domain reflectometry 1632TECO Text Editor and Corrector 1633TEE Trusted Execution Environment 1634TFT thin film transistor 1635TFTP Trivial File Transfer Protocol 1636TIAS try it and see 1637TIFF tagged image file format 1638TITS try it to see 1639TK temporal key 1640TKIP Temporal Key Integrity Protocol 1641TLA top level aggregator 1642TLB translation lookaside buffer 1643TLD top level domain 1644TLER time-limited error recovery 1645TLI transport layer interface 1646TLS thread local storage 1647TLS transport layer security 1648TM Turing machine 1649TM thermal monitor 1650TMG transmogrifier 1651TMDS transition minimized differential signaling 1652TMO timeout 1653TOD time of day 1654TOE TCP offload engine 1655TOFU trust on first use 1656TOS terms of service 1657TOS trusted operating system 1658TOS type of service 1659TOTP time-based one time password 1660TP transaction processing 1661TPI tracks per inch 1662TPM transactions per minute 1663TPM trusted platform module 1664TPR task priority register 1665TPS transactions per second 1666TPS transmission parameters signaling 1667TR task register 1668TR token ring 1669TRL timing recovery loop 1670TRNG true random number generator 1671TS terminal services 1672TS time series 1673TS time stamp 1674TS transport stream 1675TSAN Thread Sanitizer 1676TSC time stamp counter 1677TSD time stamp disable 1678TSDB time series database 1679TSL test, set, lock 1680TSO time sharing option 1681TSO TCP segmentation offload 1682TSO Total Store Ordering 1683TSP Time-Stamp Protocol 1684TSP Tunnel Setup Protocol 1685TSP time synchronization protocol 1686TSP traveling salesman problem 1687TSS task state segment 1688TSV tab-separated values 1689TTL time to live 1690TTL transistor-transistor logic 1691TTM translation table maps 1692TTY teletype 1693TUI {terminal,text-based,textual} user interface 1694TX {transmit out,transmitter} 1695TXG transaction group 1696TZ time zone 1697UAC user {access,account} control 1698UAF use-after-free 1699UART universal asynchronous receiver/transmitter 1700UAT user acceptance testing 1701UB undefined behavior 1702UBSAN Undefined Behavior Sanitizer 1703UC uncacheable 1704UCS uniform-cost search 1705UCS unified computing system 1706UCS universal coded character set 1707UDI uniform driver interface 1708UDMA ultra DMA 1709UDO ultra density optical 1710UDP User Datagram Protocol 1711UEFI unified extensible firmware interface 1712UFO UDP fragmentation offload 1713UFS Unix File System 1714UGA universal graphics adapter 1715UI unit interval 1716UI user interface 1717UICC universal integrated circuit card 1718UID unique identifier 1719UID user identifier 1720UL upload 1721UMA uniform memory access 1722UMA upper memory area 1723UMB upper memory block 1724UML unified modeling language 1725UMPC ultra-mobile PC 1726UPNP universal plug and play 1727UPS uninterruptible power supply 1728URI uniform resource identifier 1729URL uniform resource locator 1730URN uniform resource name 1731USART universal synchronous/asynchronous receiver/transmitter 1732USB universal serial bus 1733USWC uncacheable speculative write combining 1734UT unit test 1735UTC coordinated universal time 1736UTF unicode transformation formats 1737UTP unshielded twisted pair 1738UTS UNIX time-sharing 1739UUCP Unix-to-Unix Copy Protocol 1740UUID universally unique identifier 1741UUOC useless use of cat 1742UUT unit under test 1743UX user experience 1744VA vertical alignment 1745VA virtual address 1746VA volt-ampere 1747VAX virtual address extension 1748VB Visual Basic 1749VBR volume boot record 1750VCA variable-gain amplifier 1751VCC common collector voltage 1752VCCP virtual chassis control protocol 1753VCF voltage-controlled filter 1754VCM virtual channel memory 1755VCO voltage-controlled oscillator 1756VCP virtual chassis port 1757VCS version control system 1758VDPAU Video Decode and Presentation API for Unix 1759VES virtual execution system 1760VESA Video Electronics Standards Association 1761VFO variable-frequency oscillator 1762VFS virtual file system 1763VG volume group 1764VGA Video Graphics Array 1765VHDCI very high density cable interconnect 1766VID {VLAN,voltage level} identifier 1767VIM Vi IMproved 1768VIPT virtually indexed, physically tagged 1769VIVT virtually indexed, virtually tagged 1770VLAN virtual local area network 1771VLD variable-length decoding 1772VLIW very long instruction word 1773VLSI very large scale integration 1774VLSM variable length subnet mask 1775VM virtual {machine,memory} 1776VME virtual mode extension 1777VMX vector multimedia extensions 1778VMX virtual machine extensions 1779VNC virtual network computing 1780VOD video on demand 1781VPD vital product data 1782VPN virtual private network 1783VPWS virtual private wire service 1784VR virtual reality 1785VRAM video random access memory 1786VRF virtual routing and forwarding 1787VRM voltage regulator module 1788VROC Virtual RAID On CPU 1789VRRP Virtual Router Redundancy Protocol 1790VSTP VLAN Spanning Tree Protocol 1791VTP VLAN Trunking Protocol 1792VXFS Veritas file system 1793VXVM Veritas volume manager 1794W watt 1795W3C World Wide Web Consortium 1796WAFL write anywhere file layout 1797WAMP Web Application Messaging Protocol 1798WAN wide area network 1799WAP Wireless Application Protocol 1800WAP wireless access point 1801WDM Windows Driver Model 1802WDDM Windows Display Driver Model 1803WDT watchdog timer 1804WEP Wired Equivalent Privacy 1805WFI wait for interrupt 1806WFQ weighted fair queuing 1807WH write hit 1808WHEA Windows hardware error architecture 1809WIFI wireless fidelity 1810WLAN wireless local area network 1811WM write miss 1812WMF Windows meta file 1813WMI Windows Management Instrumentation 1814WOL Wake-on-LAN 1815WOM Wake-on-Modem 1816WOR Wake-on-Ring 1817WORM write once read many 1818WP WordPerfect 1819WP word processor 1820WP write protect 1821WPA Wi-Fi Protected Access 1822WPA2 Wi-Fi Protected Access II 1823WPAD web proxy auto-discovery protocol 1824WPS Wi-Fi Protected Setup 1825WRAM window random access memory 1826WS web services 1827WTC write through caching 1828WTD weighted tail drop 1829WWAN wireless wide area network 1830WWW world wide web 1831WYSIAYG what you see is all you get 1832WYSIWYG what you see is what you get 1833XBAR crossbar 1834XDMCP X Display Manager control protocol 1835XER XML encoding rules 1836XGA Extended Graphics Array 1837XHR XMLHttpRequest 1838XIP execute in place 1839XML Extensible Markup Language 1840XNA XNA's not acronymed 1841XNS Xerox network systems 1842XOR exclusive or 1843XP extreme programming 1844XSI X/Open System Interface 1845XSL extensible stylesheet language 1846XSLT extensible stylesheet language transformations 1847XSS cross site scripting 1848XT extended technology 1849XTACACS extended terminal access controller access-control system 1850XTI X/Open transport interface 1851XUL XML user interface language 1852YACC yet another compiler compiler 1853YAML YAML ain't markup language 1854YANG yet another next generation 1855YAWPFAPR you are welcome; please file a problem report 1856YP Yellow Pages 1857YTD year to date 1858ZAP ZFS attribute processor 1859ZBR zone bit recording 1860ZFOD zero-filled on demand 1861ZFS zettabyte file system 1862ZIF zero insertion force 1863ZIFS zero insertion force socket 1864ZIL ZFS intent log 1865ZMA zone multicast address 1866ZOI zero one infinity 1867ZOI zone of influence 1868ZPL ZFS Posix layer 1869ZVOL ZFS Volume 1870