acronyms.comp revision 1.337
1$NetBSD: acronyms.comp,v 1.337 2023/02/28 16:48:00 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 1204PEAP Protected EAP 1205PECI platform environment control interface 1206PEP protocol extension protocol 1207PER packed encoding rules 1208PFS perfect forward secrecy 1209PGAS partitioned global address space 1210PGE page global enable 1211PGO profile guided optimization 1212PGP Pretty Good Privacy 1213PHB PCI host bridge 1214PHP PHP: Hypertext Preprocessor 1215PIC performance instrumentation counters 1216PIC position independent code 1217PIC programmable interrupt controller 1218PICNIC problem in chair, not in computer 1219PID process id 1220PIE position independent executable 1221PIL Priority Interrupt Level 1222PIM personal information manager 1223PIM platform-independent model 1224PIO programmed input/output 1225PIPT physically indexed, physically tagged 1226PIQ prefetch input queue 1227PIT programmable interrupt timer 1228PIV personal identity verification 1229PIX Private Internet eXchange 1230PKCS public-key cryptography standards 1231PKI public key infrastructure 1232PLC programmable logic controller 1233PLD programmable logic device 1234PLL phase locked loop 1235PLRU pseudo LRU 1236PLT procedure linkage table 1237PLTM package level thermal management 1238PM power management 1239PM {phase,pulse} modulation 1240PMC performance monitoring counters 1241PME power management event 1242PMEG page map entry group 1243PMI performance monitoring infrastructure 1244PMI platform management interrupt 1245PMIC power management integrated circuit 1246PMIO port-mapped input/output 1247PMT photo-multiplier tube 1248PMU performance monitoring units 1249PMU power management unit 1250PNG portable network graphics 1251PNP plug and play 1252POE power over ethernet 1253POF probability of failure 1254POP Post Office Protocol 1255POP power on password 1256POR plan of record 1257POSIX Portable Operating System Interface [for Unix] 1258POST power on self test 1259POTS plain old telephone system 1260POWER Performance Optimization With Enhanced RISC 1261POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1262PP pair programming 1263PPB PCI [to] PCI bridge 1264PPC PowerPC 1265PPC Power Performance Computing 1266PPI pixels per inch 1267PPM pages per minute 1268PPP Point-to-Point Protocol 1269PPPOA Point-to-Point Protocol over ATM 1270PPPOE Point-to-Point Protocol over Ethernet 1271PPR processor programming reference 1272PPT powerpoint 1273PPT punched paper tape 1274PPU physics processing unit 1275PRAM Parameter RAM 1276PRBS pseudorandom bit sequence 1277PRG pseudorandom generator 1278PRF pseudorandom function [family] 1279PRML partial response, maximum likelihood 1280PRN pseudorandom {noise,number} 1281PRNG pseudorandom number generator 1282PROM programmable read only memory 1283PRP pseudorandom permutation 1284PRU Programmable Realtime Unit 1285PS PostScript 1286PSD power spectral density 1287PSE page size extensions 1288PSK phase shift keying 1289PSK pre-shared key 1290PSTN public switched telephone network 1291PSW program status word 1292PTE page table entry 1293PTLA pseudo top level aggregator 1294PTP page table page 1295PTV perceived target value 1296PU processing unit 1297PUC personal unblocking code 1298PUN physical unit number 1299PV physical volume 1300PVC permanent virtual circuit 1301PVG physical volume group 1302PVI protected-mode virtual interrupt 1303PVRST Per-VLAN rapid spanning tree 1304PVST Per-VLAN Spanning Tree 1305PWM pulse width modulation 1306PXE preboot execution environment 1307QA quality assurance 1308QAM quadrature amplitude modulation 1309QAM quality assurance management 1310QBE query by example 1311QC quality control 1312QDI quasi delay insensitive 1313QCIF quarter common intermediate format 1314QOI quality of implementation 1315QOI quick order interface 1316QOS quality of service 1317QVL qualified vendor list 1318R/O read only 1319R/W read/write 1320RA receiver address 1321RA remote assistance 1322RA resource affinity 1323RA router advertisement 1324RAD rapid application development 1325RADIUS remote authentication dial-in user service 1326RAID redundant array of {independent,inexpensive} disks 1327RAM random access memory 1328RAS reliability, availability and serviceability 1329RAS remote access service 1330RAS restartable atomic sequence 1331RAS row address strobe 1332RBF radial basis function 1333RBNF routing backus-naur form 1334RBT red-black tree 1335RC release candidate 1336RC remote control 1337RC run commands 1338RCS Revision Control System 1339RCU read, copy, update 1340RDB Rigid Disk Block 1341RDBMS relational database management system 1342RDF Resource Description Framework 1343RDM relational data model 1344RDMA remote direct memory access 1345RDP remote desktop protocol 1346RDRAM Rambus DRAM 1347RE regular expression 1348REPL read, evaluate, print, loop 1349REST representational state transfer 1350RF radio frequency 1351RFB remote frame buffer 1352RFI radio frequency interference 1353RFO request for ownership 1354RFU reserved for future use 1355RGB red green blue 1356RGBA red green blue alpha 1357RGMII reduced gigabit media independent interface 1358RH read hit 1359RHEL Red Hat Enterprise Linux 1360RHL Red Hat Linux 1361RIB routing information base 1362RIFF Resource Interchange File Format 1363RIP Raster Image Processor 1364RIP Routing Information Protocol 1365RIR regional Internet registry 1366RISC reduced instruction set {computer,computing} 1367RKM ROM Kernel Manual 1368RLE run length encoding 1369RLL run length limited 1370RLO right-to-left override 1371RM read miss 1372RMCP Remote Management Control Protocol 1373RMI remote method invocation 1374RMO Relaxed Memory Ordering 1375RMPM rapid memory power management 1376RMS root mean square 1377RMW read, modify, write 1378RNG random number generator 1379ROM read only memory 1380ROP return-oriented programming 1381RPC remote procedure call 1382RPG Report Program Generator 1383RPKI resource PKI 1384RPL requested privilege level 1385RPM revolutions per minute 1386RPN reverse Polish notation 1387RPVST Rapid Per-VLAN Spanning Tree 1388RR random replacement 1389RR round robin 1390RS relay station 1391RSA Rivest, Shamir, [and] Adleman 1392RSIP Realm Specific IP 1393RSN Robust Secure Network 1394RSS really simple syndication 1395RSS Receive Side Scaling 1396RSS residual sum of squares 1397RSTP Rapid Spanning Tree Protocol 1398RT real time 1399RTC real time clock 1400RTC real time computing 1401RTF rich text format 1402RTL register transfer language 1403RTL resistor-transistor logic 1404RTL right to left 1405RTOS real time operating system 1406RTP Real-time Transport Protocol 1407RTS request to send 1408RTT round trip time 1409RUP rational unified process 1410RW Rabin-Williams 1411RWM read-write memory 1412RX {receive,receiver} 1413S/PDIF Sony/Philips Digital Interface Format 1414SA security advisory 1415SA security association 1416SA source address 1417SA structured analysis 1418SAAS software as a service 1419SABRE Semi-automated business research environment 1420SACD super audio compact disc 1421SAD security association database 1422SAF-TE SCSI accessed fault-tolerant enclosure 1423SAGE Semi-automated ground environment 1424SAL {service,system} abstraction layer 1425SAM serial access memory 1426SAM sum addressed memory 1427SAML security assertion markup language 1428SAN storage area network 1429SAP service access point 1430SAPIC streamlined advanced programmable interrupt controller 1431SASD structured analysis, structured design 1432SASI Shugart Associates System Interface 1433SASL simple authentication [and] security layer 1434SATA serial advanced technology attachment 1435SAX simple API for XML 1436SB sound blaster 1437SBSA server base system architecture 1438SBU standard build unit 1439SC store conditional 1440SCA source code analyzer 1441SCADA supervisory control and data acquisition 1442SCC single chip cloud 1443SCC source code control 1444SCCP skinny call control protocol 1445SCCS Source Code Control System 1446SCI scalable coherent interface 1447SCI system control interrupt 1448SCIM smart common input method 1449SCM software configuration management 1450SCM source code management 1451SCM storage-class memory 1452SCO synchronous connection orientated 1453SCP secure copy 1454SCP system control processor 1455SCPI system control and power interface 1456SCSI Small Computer System Interface 1457SCTP Stream Control Transmission Protocol 1458SDDC software defined data center 1459SDEI software delegated exception interface 1460SDI symbol deinterleave 1461SDK software development kit 1462SDL Simple Declarative Language 1463SDL Simple Direct-media Layer 1464SDLC {software,system,systems} development life cycle 1465SDN software defined networking 1466SDP Session Description Protocol 1467SDR software defined radio 1468SDRAM synchronous dynamic random access memory 1469SDS software defined storage 1470SDT syntax-directed translation 1471SEA synchronous external abort 1472SEGV segmentation violation 1473SED self-encrypting drive 1474SED stream editor 1475SEMB serial ATA enclosure management bridge 1476SEO search engine optimization 1477SES SCSI enclosure services 1478SFC sequential function chart 1479SFI simple firmware interface 1480SFI software fault isolation 1481SFTP SSH File Transfer Protocol 1482SFTP Serial File Transfer Protocol 1483SFTP Simple File Transfer Protocol 1484SGI Silicon Graphics, Inc 1485SGI software generated interrupt 1486SGMII serial gigabit media independent interface 1487SGPIO serial general purpose input/output 1488SGRAM synchronous graphics random access memory 1489SHA secure hash algorithm 1490SICP structure and interpretation of computer programs 1491SIDH supersingular isogeny Diffie-Hellman 1492SIEM security information and event management 1493SIF source input format 1494SIFS short inter-frame space 1495SIM subscriber identity module 1496SIMD single instruction, multiple data 1497SIMM single inline memory module 1498SIP Session Initiation Protocol 1499SIR signal-to-interference ratio 1500SIR slow infrared 1501SISD single instruction, single data 1502SIV synthetic intialization vector 1503SLAAC stateless address auto-configuration 1504SLC single-level cell 1505SLDRAM synchronous-link dynamic random access memory 1506SLED single large expensive disk 1507SLI scalable link interface 1508SLI scan-line interleave 1509SLIC system license internal code 1510SLOC source lines of code 1511SLRU segmented LRU 1512SMA smart memory access 1513SMAF system management action field 1514SMAP Simple Mail Access Protocol 1515SMAP supervisor mode access prevention 1516SMART self-monitoring analysis and reporting technology 1517SMB Server Message Block 1518SMB system management bus 1519SMBIOS System Management BIOS 1520SMC system management controller 1521SMD storage module device 1522SMEP supervisor mode execution protection 1523SMF single mode fiber 1524SMI structure of management information 1525SMI system management interrupt 1526SMM system management mode 1527SMP serial management protocol 1528SMP symmetric multiprocessing 1529SMR shingled magnetic recording 1530SMR state machine replication 1531SMT simultaneous multithreading 1532SMTP Simple Mail Transfer Protocol 1533SMU system management unit 1534SNA systems network architecture 1535SNAP Sub-Network Access Protocol 1536SNIA Storage Networking Industry Association 1537SNMP Simple Network Management Protocol 1538SNR signal-to-noise ratio 1539SOA service oriented architecture 1540SOAP Simple Object Access Protocol 1541SOC system on chip 1542SOF start of frame 1543SOH start of header 1544SOHO small office/home office 1545SOL serial over LAN 1546SOM system on module 1547SP service pack 1548SP stack pointer 1549SPA storage pool allocator 1550SPAN switched port analyzer 1551SPARC scalable processor architecture 1552SPARQL SPARQL Protocol and RDF Query Language 1553SPD security policy database 1554SPD serial presence detect 1555SPDIF Sony/Philips digital interface format 1556SPI serial peripheral interface 1557SPI stateful packet inspection 1558SPL system interrupt priority level 1559SPL spinlock 1560SPMD single process, multiple data 1561SPR special purpose register 1562SPT sectors per track 1563SQA software quality assurance 1564SQCIF sub quarter common intermediate format 1565SQL Structured Query Language 1566SRAM static random access memory 1567SRC sample rate conversion 1568SRP SCSI RDMA protocol 1569SRR shaped round robin 1570SRTP Secure Real-time Transport Protocol 1571SS self-snoop 1572SS stack segment 1573SSA static single assignment 1574SSAP source service access point 1575SSB single-sideband modulation 1576SSC spread spectrum clock 1577SSD solid state drive 1578SSE streaming SIMD extensions 1579SSFDC solid state floppy disc card 1580SSH secure shell 1581SSI server side includes 1582SSID service set identifier 1583SSTP secure socket tunneling protocol 1584SSL secure sockets layer 1585SSP stack smashing protection 1586STC software thermal control 1587STD state transition diagram 1588STM software transactional memory 1589STOMP Streaming Text Oriented Messaging Protocol 1590STP Spanning Tree Protocol 1591STP shielded twisted pair 1592STRG spanning tree root guard 1593SUN Stanford University Network 1594SUS Single Unix Specification 1595SUT system under test 1596SVC switched virtual circuit 1597SVG scalable vector graphics 1598SVGA Super Video Graphics Array 1599SVI {switch,switched} virtual interface 1600SVM secure virtual machine 1601SVM support vector machine 1602SVR System V Release 1603SVS Separate Virtual Space 1604SWF Shockwave Flash 1605SWIG simplified wrapper [and] interface generator 1606SYR symbol timing recovery 1607TA test assertion 1608TA transmitter address 1609TACACS terminal access controller access-control system 1610TAI international atomic time 1611TAO track at once 1612TAOCP The Art of Computer Programming 1613TAP Test Anything Protocol 1614TAS test and set 1615TB terabyte 1616TBNF transitional backus-naur form 1617TCB trace capture buffer 1618TCB trusted computing base 1619TCC thermal control circuit 1620TCL tool command language 1621TCP Transmission Control Protocol 1622TCQ tagged command queueing 1623TDC time [to] digital converter 1624TDD test-driven development 1625TDD time division duplex 1626TDM time division multiplexing 1627TDMA time division multiple access 1628TDOA time difference of arrival 1629TDP thermal design {point,power} 1630TDR time-domain reflectometry 1631TECO Text Editor and Corrector 1632TEE Trusted Execution Environment 1633TFT thin film transistor 1634TFTP Trivial File Transfer Protocol 1635TIAS try it and see 1636TIFF tagged image file format 1637TITS try it to see 1638TK temporal key 1639TKIP Temporal Key Integrity Protocol 1640TLA top level aggregator 1641TLB translation lookaside buffer 1642TLD top level domain 1643TLER time-limited error recovery 1644TLI transport layer interface 1645TLS thread local storage 1646TLS transport layer security 1647TM Turing machine 1648TM thermal monitor 1649TMG transmogrifier 1650TMDS transition minimized differential signaling 1651TMO timeout 1652TOD time of day 1653TOE TCP offload engine 1654TOFU trust on first use 1655TOS terms of service 1656TOS trusted operating system 1657TOS type of service 1658TOTP time-based one time password 1659TP transaction processing 1660TPI tracks per inch 1661TPM transactions per minute 1662TPM trusted platform module 1663TPR task priority register 1664TPS transactions per second 1665TPS transmission parameters signaling 1666TR task register 1667TR token ring 1668TRL timing recovery loop 1669TRNG true random number generator 1670TS terminal services 1671TS time series 1672TS time stamp 1673TS transport stream 1674TSAN Thread Sanitizer 1675TSC time stamp counter 1676TSD time stamp disable 1677TSDB time series database 1678TSL test, set, lock 1679TSO time sharing option 1680TSO TCP segmentation offload 1681TSO Total Store Ordering 1682TSP Time-Stamp Protocol 1683TSP Tunnel Setup Protocol 1684TSP time synchronization protocol 1685TSP traveling salesman problem 1686TSS task state segment 1687TSV tab-separated values 1688TTL time to live 1689TTL transistor-transistor logic 1690TTM translation table maps 1691TTY teletype 1692TUI {terminal,text-based,textual} user interface 1693TX {transmit out,transmitter} 1694TXG transaction group 1695TZ time zone 1696UAC user {access,account} control 1697UAF use-after-free 1698UART universal asynchronous receiver/transmitter 1699UAT user acceptance testing 1700UB undefined behavior 1701UBSAN Undefined Behavior Sanitizer 1702UC uncacheable 1703UCS uniform-cost search 1704UCS unified computing system 1705UCS universal coded character set 1706UDI uniform driver interface 1707UDMA ultra DMA 1708UDO ultra density optical 1709UDP User Datagram Protocol 1710UEFI unified extensible firmware interface 1711UFO UDP fragmentation offload 1712UFS Unix File System 1713UGA universal graphics adapter 1714UI unit interval 1715UI user interface 1716UICC universal integrated circuit card 1717UID unique identifier 1718UID user identifier 1719UL upload 1720UMA uniform memory access 1721UMA upper memory area 1722UMB upper memory block 1723UML unified modeling language 1724UMPC ultra-mobile PC 1725UPNP universal plug and play 1726UPS uninterruptible power supply 1727URI uniform resource identifier 1728URL uniform resource locator 1729URN uniform resource name 1730USART universal synchronous/asynchronous receiver/transmitter 1731USB universal serial bus 1732USWC uncacheable speculative write combining 1733UT unit test 1734UTC coordinated universal time 1735UTF unicode transformation formats 1736UTP unshielded twisted pair 1737UTS UNIX time-sharing 1738UUCP Unix-to-Unix Copy Protocol 1739UUID universally unique identifier 1740UUOC useless use of cat 1741UUT unit under test 1742UX user experience 1743VA vertical alignment 1744VA virtual address 1745VA volt-ampere 1746VAX virtual address extension 1747VB Visual Basic 1748VBR volume boot record 1749VCA variable-gain amplifier 1750VCC common collector voltage 1751VCCP virtual chassis control protocol 1752VCF voltage-controlled filter 1753VCM virtual channel memory 1754VCO voltage-controlled oscillator 1755VCP virtual chassis port 1756VCS version control system 1757VDPAU Video Decode and Presentation API for Unix 1758VES virtual execution system 1759VESA Video Electronics Standards Association 1760VFO variable-frequency oscillator 1761VFS virtual file system 1762VG volume group 1763VGA Video Graphics Array 1764VHDCI very high density cable interconnect 1765VID {VLAN,voltage level} identifier 1766VIM Vi IMproved 1767VIPT virtually indexed, physically tagged 1768VIVT virtually indexed, virtually tagged 1769VLAN virtual local area network 1770VLD variable-length decoding 1771VLIW very long instruction word 1772VLSI very large scale integration 1773VLSM variable length subnet mask 1774VM virtual {machine,memory} 1775VME virtual mode extension 1776VMX vector multimedia extensions 1777VMX virtual machine extensions 1778VNC virtual network computing 1779VOD video on demand 1780VPD vital product data 1781VPN virtual private network 1782VPWS virtual private wire service 1783VR virtual reality 1784VRAM video random access memory 1785VRF virtual routing and forwarding 1786VRM voltage regulator module 1787VROC Virtual RAID On CPU 1788VRRP Virtual Router Redundancy Protocol 1789VSTP VLAN Spanning Tree Protocol 1790VTP VLAN Trunking Protocol 1791VXFS Veritas file system 1792VXVM Veritas volume manager 1793W watt 1794W3C World Wide Web Consortium 1795WAFL write anywhere file layout 1796WAMP Web Application Messaging Protocol 1797WAN wide area network 1798WAP Wireless Application Protocol 1799WAP wireless access point 1800WDM Windows Driver Model 1801WDDM Windows Display Driver Model 1802WDT watchdog timer 1803WEP Wired Equivalent Privacy 1804WFI wait for interrupt 1805WFQ weighted fair queuing 1806WH write hit 1807WHEA Windows hardware error architecture 1808WIFI wireless fidelity 1809WLAN wireless local area network 1810WM write miss 1811WMF Windows meta file 1812WMI Windows Management Instrumentation 1813WOL Wake-on-LAN 1814WOM Wake-on-Modem 1815WOR Wake-on-Ring 1816WORM write once read many 1817WP WordPerfect 1818WP word processor 1819WP write protect 1820WPA Wi-Fi Protected Access 1821WPA2 Wi-Fi Protected Access II 1822WPAD web proxy auto-discovery protocol 1823WPS Wi-Fi Protected Setup 1824WRAM window random access memory 1825WS web services 1826WTC write through caching 1827WTD weighted tail drop 1828WWAN wireless wide area network 1829WWW world wide web 1830WYSIAYG what you see is all you get 1831WYSIWYG what you see is what you get 1832XBAR crossbar 1833XDMCP X Display Manager control protocol 1834XER XML encoding rules 1835XGA Extended Graphics Array 1836XHR XMLHttpRequest 1837XIP execute in place 1838XML Extensible Markup Language 1839XNA XNA's not acronymed 1840XNS Xerox network systems 1841XOR exclusive or 1842XP extreme programming 1843XSI X/Open System Interface 1844XSL extensible stylesheet language 1845XSLT extensible stylesheet language transformations 1846XSS cross site scripting 1847XT extended technology 1848XTACACS extended terminal access controller access-control system 1849XTI X/Open transport interface 1850XUL XML user interface language 1851YACC yet another compiler compiler 1852YAML YAML ain't markup language 1853YANG yet another next generation 1854YAWPFAPR you are welcome; please file a problem report 1855YP Yellow Pages 1856YTD year to date 1857ZAP ZFS attribute processor 1858ZBR zone bit recording 1859ZFOD zero-filled on demand 1860ZFS zettabyte file system 1861ZIF zero insertion force 1862ZIFS zero insertion force socket 1863ZIL ZFS intent log 1864ZMA zone multicast address 1865ZOI zero one infinity 1866ZOI zone of influence 1867ZPL ZFS Posix layer 1868ZVOL ZFS Volume 1869