acronyms.comp revision 1.275
1$NetBSD: acronyms.comp,v 1.275 2019/07/02 15:53:50 sevan Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABI application binary interface 8ABNF augmented backus-naur form 9ABR available bit rate 10ABRT automatic bug reporting tool 11AC alternating current 12ACI adjacent channel interferer 13ACID atomicity, consistency, isolation, durability 14ACK Amsterdam compiler kit 15ACK acknowledgement 16ACL access control list 17ACL active current loop 18ACL asynchronous connection less 19ACP auxiliary control {process,program} 20ACPI advanced configuration and power interface 21ACS access control set 22ACU automatic calling unit 23ADB Apple desktop bus 24ADC analog [to] digital converter 25ADD acronym driven development 26ADO active data objects 27ADP automatic data processing 28ADPCM adaptive differential pulse code modulation 29ADS alternate data stream 30ADSL asymmetric digital subscriber line 31ADT abstract data type 32AER advanced error reporting 33AES Advanced Encryption Standard 34AFP Apple Filing Protocol 35AFS Andrew File System 36AGC automatic gain control 37AGP accelerated graphics port 38AI analog input 39AI artificial intelligence 40AL access list 41AL active link 42ALE address latch enable 43ALS ambient light sensor 44ALSA advanced Linux sound architecture 45ALU arithmetic and logical unit 46ALUA asymmetric logical unit access 47AM access method 48AM alignment mask 49AM amplitude modulation 50AMD Advanced Micro Devices Inc 51AMDD Agile model-driven development 52AMI alternate mark inversion 53AMP asymmetric multiprocessing 54AMQP advanced message queuing protocol 55AMT active management technology 56AN Arabic number 57ANR application not responding 58ANSI American National Standards Institute 59AO analog output 60AOC add-on card 61AOL Alert-on-LAN 62AOS add or subtract 63AP access point 64AP application processor 65APFS Apple file system 66API application programming interface 67APEI ACPI platform error interface 68APIC advanced programmable interrupt controller 69APIPA automatic private IP addressing 70APM advanced power management 71APM application performance management 72APU accelerated processing unit 73APT advanced persistent threat 74AQM active queue management 75ARAT always running APIC timer 76ARC adaptive replacement cache 77ARC Advanced RISC Computing 78ARC automatic reference counting 79ARM Advanced RISC Machines 80ARP Address Resolution Protocol 81ARPA Advanced Research Projects Agency 82ARQ automatic repeat request 83ARR address range register 84ARU audio response unit 85AS autonomous system 86ASA Adaptive Security Appliance 87ASAN Address Sanitizer 88ASC advanced smart cache 89ASCII American Standard Code for Information Interchange 90ASD agile software development 91ASE advanced software environment 92ASF alert standard format 93ASIC application-specific integrated circuit 94ASK amplitude shift keying 95ASLR address space layout randomization 96ASN autonomous system number 97ASP active server pages 98ASP auxiliary storage pool 99ASPM active state power management 100ASQ automated software quality 101ASR address space register 102ASR Apple software restore 103AST abstract syntax tree 104AST asynchronous system trap 105AT access time 106AT advanced technology 107ATA advanced technology attachment 108ATAPI advanced technology attachment packet interface 109ATC address translation cache 110ATM asynchronous transfer mode 111ATX advanced technology extended 112AV anti virus 113AVB audio video bridging 114AVL Adelson-Velsky-Landis 115AVX advanced vector extensions 116BA byte align 117BAL basic assembly language 118BAR base address register 119BBS bulletin board system 120BCC blind carbon copy 121BCD binary coded decimal 122BCH boot console handler 123BCR byte count register 124BCS base configuration space 125BD baud 126BDD binary decision diagram 127BDI bit deinterleave 128BDUF big design up front 129BEDO burst extended data output 130BER basic encoding rules 131BER bit error {rate,ratio} 132BERT boot error record table 133BFD bidirectional forwarding detection 134BFD binary {file,format} descriptor 135BFKL big fscking kernel lock 136BFS breadth-first search 137BFT binary file transfer 138BGA ball grid array 139BGP Border Gateway Protocol 140BGPSEC BGP Security 141BIND Berkeley Internet Name Daemon 142BIOS Basic Input/Output System 143BIOS built-in operating system 144BIST built-in self-test 145BIU bus interface unit 146BKDG BIOS and kernel developer's guide 147BLAS basic linear algebra subprograms 148BLC back light control 149BLOB binary large object 150BM bus master 151BMC baseboard management controller 152BMIC bus master interface controller 153BN boundary neutral 154BNF Backus-Naur form 155BO binary output 156BOF beginning of file 157BOM beginning of message 158BOM byte order mark 159BP base pointer 160BP boot processor 161BPB BIOS parameter block 162BPDU bridge protocol data unit 163BPF Berkeley Packet Filter 164BPI bits per inch 165BPM business process modelling 166BPS bits per second 167BPSK binary phase shift keying 168BQS Berkeley quality software 169BRE basic regular expression 170BS backspace 171BS binary sequence 172BSA basic service area 173BSD Berkeley Software Distribution 174BSDP Boot Service Discovery Protocol 175BSF bit scan forward 176BSOD blue screen of death 177BSP binary space partition 178BSP board support package 179BSP bootstrap processor 180BSR bit scan reverse 181BSS basic service set 182BSS block started by symbol 183BSSID basic service set identifier 184BT BitTorrent 185BT Bluetooth 186BT bit test 187BTC bit test [and] complement 188BTM bus transport mechanism 189BTR bit test [and] reset 190BTS bit test [and] set 191BTS bug tracking system 192BW bandwidth 193BWM block-write mode 194BUAG big ugly ASCII graphic 195CA certificate authority 196CAD computer-aided design 197CAM computer assisted manufacturing 198CAM conditional access module 199CAM content addressable memory 200CARP Common Address Redundancy Protocol 201CAS column address strobe 202CAS compare and swap 203CAS computer algebra system 204CASE computer aided software engineering 205CAU control access unit 206CAV constant angular velocity 207CBC cipher block chaining 208CBR constant bit rate 209CC carbon copy 210CCD charge coupled device 211CCI co-channel interferer 212CCNUMA cache-coherent non-uniform memory access 213CCTL command completion time limit 214CD cache disable 215CD compact disc 216CDDA compact disc digital audio 217CDL compiler description language 218CDMA code division multiple access 219CDP Cisco Discovery Protocol 220CDRAM cache dynamic random access memory 221CER canonical encoding rules 222CE customer edge 223CF compact flash 224CFB cipher feedback 225CFG context-free grammar 226CFG control-flow graph 227CFI control-flow integrity sanitizer 228CG control gate 229CGA Color Graphics Adapter 230CGI common gateway interface 231CGN Carrier-Grade NAT 232CHAP Challenge-Handshake Authentication Protocol 233CHFS chip file system 234CHS cylinder/head/sector 235CI continuous integration 236CI {common,component} interface 237CIDR Classless Inter-Domain Routing 238CIF common intermediate format 239CIFS Common Internet File System 240CIL common intermediate language 241CIR carrier-to-interference ratio 242CIS contact image sensor 243CISC complex instruction set {computer,computing} 244CJK Chinese, Japanese, [and] Korean 245CLF common log format 246CLI command line interface 247CLI common language infrastructure 248CLR common language runtime 249CLS common language specification 250CLTT closed loop thermal throttling 251CLUT color look-up table 252CLV constant linear velocity 253CM configuration management 254CMA concert multithread architecture 255CMC chassis management controller 256CMC corrected machine check 257CMS {configuration,content,course} management system 258CMI control {management,method} interface 259CMOS complementary metal-oxide-semiconductor 260CMP chip multi-processing 261CMS content management system 262CMYK cyan magenta yellow black 263CN {common,canonical} name 264CNC computer numerical control 265CNR carrier-to-noise ratio 266COA change of authority 267COF current operating frequency 268COFDM coded orthogonal frequency division multiplexing 269COFF common object file format 270COM component object model 271COM computer on module 272COMA cache-only memory architecture 273CORBA common object request broker architecture 274COS class of service 275COW copy-on-write 276CP continuous pilot 277CPB core performance boost 278CPC central processor complex 279CPC cpu performance counters 280CPE common phase error 281CPE common platform enumeration 282CPER common platform error record 283CPG clock pulse generator 284CPI cycles per instruction 285CPL current privilege level 286CPLD complex programmable logic device 287CPP C preprocessor 288CPS characters per second 289CPS continuation-passing style 290CPT command pass through 291CPU central processing unit 292CR carriage return 293CRC cyclic redundancy check 294CRL carrier recovery loop 295CRLF carriage return line feed 296CRT cathode ray tube 297CRUD create, read, update, and delete 298CS cable select 299CS chip select 300CS code segment 301CS computer science 302CSDL {common,conceptual} schema definition language 303CSI channel state information 304CSI common system interface 305CSMA carrier sense multiple access 306CSMA/CA carrier sense multiple access with collision avoidance 307CSMA/CD carrier sense multiple access with collision detection 308CSP communicating sequential processes 309CSP content security policy 310CSP constrain satisfaction problems 311CSP cryptographic service provider 312CSR control [and] status registers 313CSRG Computer Systems Research Group 314CSS cascading style sheets 315CST common spanning tree 316CSV comma-separated values 317CTF compact c type format 318CTM close to metal 319CTR counter [mode] 320CTS clear to send 321CTS common type system 322CUA common user access 323CUT coordinated universal time 324CV control voltage 325CVE common vulnerabilities and exposures 326CVS Concurrent Versions System 327DA destination address 328DAA distributed application architecture 329DAB digital audio broadcasting 330DAC digital [to] analog converter 331DAC discretionary access control 332DAD duplicate address detection 333DANE DNS-based Authentication of Named Entities 334DAO disk at once 335DAP Directory Access Protocol 336DAT digital audio tape 337DAT dynamic acceleration technology 338DB database 339DBA database administrator 340DBA dynamic bandwidth allocation 341DBB data bus buffer 342DBC design by contract 343DBL dynamic buffer limiting 344DBMS database management system 345DBS database server 346DC direct current 347DCC Direct Client-to-Client 348DCC direct cable connect 349DCD data carrier detect 350DCE data control equipment 351DCE distributed computing environment 352DCIM data center infrastructure management 353DCIM digital camera images 354DCL Digital Command Language 355DCOM distributed component object model 356DCOP Desktop COmmunication Protocol 357DCS data collection systems 358DCT discrete cosine transform 359DCU data cache unit 360DDC display data channel 361DDE dynamic data exchange 362DDI device drivers interface 363DDK device driver kit 364DDL data description language 365DDR double data rate 366DDS direct digital sound 367DDWG Digital Display Working Group 368DE debugging extensions 369DE desktop environment 370DEA data encryption algorithm 371DEC Digital Equipment Corporation 372DEK data encryption key 373DEP data execution prevention 374DER distinguished encoding rules 375DES Data Encryption Standard 376DF don't fragment 377DFA deterministic finite automaton 378DFC data flow control 379DFS depth first search 380DFS distributed file system 381DFSAN Data Flow Sanitizer 382DFT diagnostic function test 383DFT discrete Fourier transform 384DGL data generation language 385DH Diffie-Hellman 386DHCP Dynamic Host Configuration Protocol 387DIFS distributed inter-frame space 388DIMM dual inline memory module 389DIRT design in real time 390DKI driver/kernel interface 391DL diode logic 392DL discrete logarithm 393DL download 394DLCI data link connection identifier 395DLE data link escape 396DLL dynamic link library 397DLP discrete logarithm problem 398DMA direct memory access 399DMI desktop management interface 400DMS document management system 401DMT discrete multitone modulation 402DMU data management layer 403DNARD Digital network appliance reference design 404DND drag and drop 405DNLC directory name lookup cache 406DNS Domain Name System 407DNSSEC DNS Security Extensions 408DOE distributed object environment 409DOF data over fibre 410DOM document object model 411DOS denial of service 412DOS disk operating system 413DP DisplayPort 414DPC deferred procedure call 415DPCM differential pulse code modulation 416DPD dead peer detection 417DPI deep packet inspection 418DPI dots per inch 419DPL descriptor privilege level 420DPS Display PostScript 421DPST display power savings technology 422DRAAS disaster recovery as a service 423DRAM dynamic random access memory 424DRBG deterministic random bit generator 425DRI direct rendering infrastructure 426DRM digital rights management 427DRRS display refresh rate switching 428DS debug store 429DS differentiated services 430DSA digital signature algorithm 431DSAP destination service access point 432DSB double-sideband modulation 433DSCP differentiated services code point 434DSDT differentiated system descriptor table 435DSF device special file 436DSL dataset and snapshot layer 437DSL digital subscriber line 438DSL domain specific language 439DSLAM digital subscriber line access multiplexer 440DSN delivery status notification 441DSO dynamic shared object 442DSP digital signal processor 443DSSS direct sequence spread spectrum 444DTB device tree blob 445DTC device tree compiler 446DTD document type definition 447DTE data terminal equipment 448DTE dumb terminal emulator 449DTL diode-transistor logic 450DTLS datagram transport layer security 451DTS device tree source 452DTS digital thermal sensor 453DUT device under test 454DVB digital video broadcasting 455DVCS distributed version control system 456DVD digital versatile disc 457DVFS dynamic voltage and frequency scaling 458DVI device independent 459DVI Digital Visual Interface 460DVR digital video recorder 461E-XER extended XML encoding rules 462EABI embedded-application binary interface 463EAI Email Address Internationalization 464EAI Enterprise Application Integration 465EAP Extensible Authentication Protocol 466EAPOL EAP over Lan 467EAV entity-attribute-value model 468EAV ethernet audio/video bridging 469EBCDIC Extended Binary Coded Decimal Interchange Code 470EBDA Extended BIOS Data Area 471EBNF extended backus-naur form 472EBR extended boot record 473EC elliptic curve 474ECC elliptic curve cryptography 475ECC error correction code 476ECDH elliptic curve Diffie-Hellman 477ECDL elliptic curve discrete logarithm 478ECDLP elliptic curve discrete logarithm problem 479ECDSA elliptic curve digital signature algorithm 480ECL emitter-coupled logic 481ECN explicit congestion notification 482ECP enhanced capability port 483ECS enhanced chip set 484ECS extended configuration space 485EDAC error detection and correction 486EDAT enhanced dynamic acceleration technology 487EdDSA Edwards curve digital signature algorithm 488EDGE explicit data graph execution 489EDID extended display identification data 490EDO extended data out 491EDS electronical data sheet 492EDSAC electronic delay storage automatic calculator 493EDVAC electronic discrete variable automatic computer 494EEE energy efficient ethernet 495EEPROM electrically erasable programmable read only memory 496EFI extensible firmware interface 497EFL emitter follower logic 498EFM eight to fourteen modulation 499EFS extent file system 500EGA Enhanced Graphics Adapter 501EGP exterior gateway protocol 502EH extension header 503EIDE enhanced IDE 504EISA extended industry standard architecture 505EINJ error injection table 506ELF executable and linking format 507ELS entry level system 508EMI electro-magnetic interference 509EMP electro-magnetic pulse 510EMR electro-magnetic radiation 511EMACS Editor MACroS 512ENIAC electronic numerical integrator and computer 513EOF end of file 514EOI end of interrupt 515EOIS end of interactive support 516EOL end of life 517EOL end of line 518EOT end of transmission 519EPIC explicitly parallel instruction computing 520EPP enhanced parallel port 521EPRML extended partial response, maximum likelihood 522EPROM erasable programmable read only memory 523ERC error recovery control 524ERD emergency recovery disk 525ERD entity relationship diagram 526ERE extended regular expression 527ERST error record serialization table 528ESAN Efficiency Sanitizer 529ESB enterprise service bus 530ESDI enhanced small disk interface 531ESDRAM enhanced synchronous dynamic random access memory 532ESI enclosure services interface 533ESS electronic switching system 534ESS extended service set 535ESSID extended service set identifier 536EST enhanced speedstep 537ETL extract, transform, load 538EU execution unit 539EULA end user license agreement 540FAT file allocation table 541FBRAM frame buffer random access memory 542FCIF full common intermediate format 543FCL fiber channel loop 544FCS frame check sequence 545FDC floppy disk controller 546FDD floppy disk drive 547FDDI fiber distributed data interface 548FDE full disk encryption 549FDT flattened device tree 550FEA finite element analysis 551FEC forward error correction 552FET field-effect transistor 553FF finite field 554FF form feed 555FFDH finite-field Diffie-Hellman 556FFH functional fixed hardware 557FFI foreign function interface 558FFM focus follows mouse 559FFS Fast File System 560FFS find first set 561FFT fast Fourier transform 562FG floating gate 563FHSS frequency hop spread spectrum 564FID frequency identifier 565FIFO first in, first out 566FILO first in, last out 567FIPS Federal Information Processing Standards 568FIR fast infrared 569FLOPS floating [point] operations per second 570FLOSS free/libre/open source software 571FM frequency modulation 572FMR false match rate 573FOSS free/open source software 574FPGA field programmable gate array 575FPM fast page mode 576FPR floating point register 577FPU floating point unit 578FQDN fully qualified domain name 579FRR false rejection rate 580FRU field replaceable unit 581FS file system 582FSB front side bus 583FSCK file system check 584FSF Free Software Foundation 585FSK frequency shift keying 586FSM finite-state machine 587FTA fault tree analysis 588FTL flash translation layer 589FTP File Transfer Protocol 590FTPS File Transfer Protocol Secure 591FUS fast user switching 592FWH firmware hub 593FWS folding white space 594GAL generic array logic 595GARP generic attribute registration protocol 596GAS generic address structure 597GC garbage collector 598GCM Galois counter mode 599GCR group-coded recording 600GDI Graphics Device Interface 601GDT global descriptor table 602GEM graphics environment manager 603GEM graphics execution manager 604GENA general event notification architecture 605GHC Glasgow Haskell compiler 606GHES generic hardware error source 607GIC generic interrupt controller 608GID group identifier 609GIF graphics interchange format 610GMCH graphics and memory controller hub 611GNU GNU's Not Unix 612GOP graphics output protocol 613GOT global offset table 614GPE general purpose event 615GPF general protection fault 616GPG GNU Privacy Guard 617GPL [GNU] General Public License 618GPR general purpose register 619GPS generalized processor sharing 620GPT GUID partition table 621GPU graphics processing unit 622GR golden ratio 623GRE generic routing encapsulation 624GSI global system interrupt 625GUI graphical user interface 626GUID globally unique identifier 627GVFS git virtual file system 628HA high availability 629HAL hardware abstraction layer 630HAT hashed array tree 631HATEOAS hypermedia as the engine of application state 632HBA host bus adapter 633HCF halt and catch fire 634HCI host controller interface 635HCI human-computer interaction 636HCL hardware compatibility list 637HDCP High-bandwidth Digital Content Protection 638HDD hard disk drive 639HDL hardware description language 640HDMI High-Definition Multimedia Interface 641HDTV high-definition television 642HECI host embedded controller interface 643HEST hardware error source table 644HF high frequency 645HFM highest frequency mode 646HFS hierarchical file system 647HID human interface device 648HKP HTTP Keyserver Protocol 649HLL high-level language 650HMA high memory area 651HMI human-machine interface 652HOOD hierarchical object oriented design 653HP Hewlett-Packard 654HPC high performance computing 655HPET high precision event timer 656HSM hardware security module 657HSM hierarchical storage management 658HT hyper-threading 659HTC hardware thermal control 660HTCC high temperature co-fired ceramic 661HTML HyperText Markup Language 662HTT hyper-threading technology 663HTTP Hypertext Transfer Protocol 664HTTPS Hypertext Transfer Protocol Secure 665HVM hardware virtual machine 666HVDS High-Voltage Differential Signaling 667HWASAN Hardware-assisted Address Sanitizer 668HZ Hertz 669I2O intelligent input/output 670IA information assurance 671IAAS infrastructure as a service 672IANA Internet Assigned Numbers Authority 673IBC iterated block cipher 674IBM International Business Machines 675IBS instruction based sampling 676IBSS independent basic service set 677IC integrated circuit 678ICA independent computer architecture 679ICB Internet Citizen's Band 680ICE in-circuit emulator 681ICE internal compiler error 682ICH I/O controller hub 683ICMP Internet Control Message Protocol 684ICT information and communications technology 685ICW initialization command word 686IDA Intel dynamic acceleration 687IDCMP Intuition direct communication message port 688IDE integrated development environment 689IDE integrated drive electronics 690IDPS intrusion detection [and] prevention system 691IDRP inter-domain routing protocol 692IDS intrusion detection system 693IDT interrupt descriptor table 694IE Internet Explorer 695IEC International Electrotechnical Commission 696IEEE Institute of Electrical and Electronics Engineers 697IESG Internet Engineering Steering Group 698IETF Internet Engineering Task Force 699IF intermediate frequency 700IFCM isochronous flow control mode 701IFF Interchange File Format 702IFS internal field separator 703IGD Internet gateway device 704IGMP Internet Group Management Protocol 705IGP interior gateway protocol 706IHV independent hardware vendor 707IKE Internet key exchange 708ILM internal loopback mode 709ILOM integrated lights-out management 710ILP instruction level parallelism 711IM instant messaging 712IMAP Internet Message Access Protocol 713IMC integrated memory controller 714IMCR interrupt mode configuration register 715IMR interrupt mask register 716IMS information management system 717IMSI international mobile subscriber identity 718INCITS InterNational Committee for Information Technology Standards 719IO input/output 720IOCTL input/output control 721IOM input/output managers 722IOMMU input/output memory management unit 723IOT Internet of Things 724IP Internet Protocol 725IP intellectual property 726IPC instructions per cycle 727IPC interprocess communication 728IPCF interprocess communication facility 729IPE integrated programming environment 730IPI intelligent peripheral interface 731IPI interprocessor interrupt 732IPL Initial Program Load 733IPL Interrupt Priority Level 734IPMB Intelligent Platform Management Bus 735IPMI Intelligent Platform Management Interface 736IPNG Internet Protocol, Next Generation 737IPS in-plane switching 738IPS intrusion prevention system 739IPSEC Internet Protocol Security 740IRC Internet Relay Chat 741IRDA infrared data association 742IRDP ICMP Router Discovery Protocol 743IRQ interrupt request 744IRQL interrupt request level 745IRR interrupt request register 746IRTF Internet Research Task Force 747IS information system 748ISA industry standard architecture 749ISA instruction set architecture 750ISE instant secure erase 751ISDN integrated services digital network 752ISI inter-symbol interference 753ISL initial system load 754ISM industrial, scientific, [and] medical 755ISN initial serial number 756ISO International Standards Organization 757ISOC Internet Society 758ISP Internet service provider 759ISR in-service register 760ISR interrupt service routine 761IST internal spanning tree 762IST interrupt stack table 763ISV independent software vendor 764IT information technology 765ITB Intel Turbo Boost 766ITIL information technology infrastructure library 767ITP in-target probe 768ITSM IT service management 769IV initialization vector 770IVT interrupt vector table 771JBOD just a bunch of disks 772JCL Job Control Language 773JFET junction [gate] field-effect transistor 774JIT just in time 775JPEG Joint Photographic Experts Group 776JRE Java Runtime Environment 777JSON JavaScript Object Notation 778JTAG joint test action group 779KASLR kernel address space layout randomization 780KB keyboard 781KB kilobyte 782KBD keyboard 783KBD kilobaud 784KCS keyboard controller style 785KLOC thousand lines of code 786KMS kernel-mode setting 787KPI kernel programming interface 788KVA kernel virtual address 789KVM kernel virtual machine 790KVM kernel virtual memory 791KVM keyboard, video, [and] mouse 792L2CAP link layer control and adaptation protocol 793LAMP Linux Apache MySQL {Perl,PHP,Python} 794LAN local area network 795LAPIC local advanced programmable interrupt controller 796LAR load access rights 797LBA logical block addressing 798LBNF labeled backus-naur form 799LBS location-based service 800LCD liquid crystal display 801LCP link control protocol 802LDA local delivery agent 803LDAP Lightweight Directory Access Protocol 804LDR light-dependent resistor 805LDT local descriptor table 806LE logical extent 807LED light emitting diode 808LELL low energy link layer 809LER label edge router 810LF line feed 811LF low frequency 812LFM lowest frequency mode 813LFN long file names 814LFO low-frequency oscillation 815LFS log-structured file system 816LFU least frequently used 817LHP loop heat pipe 818LIF logical interchange format 819LIFO last in, first out 820LILO LInux LOader 821LILO last in, last out 822LINT local interrupt 823LIR local Internet registry 824LISP LISt Processor 825LISP Locator/ID Separation Protocol 826LKM {Linux,loadable} kernel module 827LKML Linux kernel mailing list 828LL load linked 829LL/SC load linked/store conditional 830LLC logical link control 831LLD low-level design 832LLDD low-level design document 833LLDP link layer discovery protocol 834LLF low level format 835LLMNR link-local multicast name resolution 836LLVM Low Level Virtual Machine 837LM long mode 838LMI local management interface 839LMM link management mode 840LMP link management protocol 841LNO loop nest optimization 842LOC lines of code 843LOM lights-out management 844LPE Linux performance events 845LPC low pin count 846LPS local positioning system 847LRC longitudinal redundancy check 848LRM left-to-right mark 849LRO left-to-right override 850LRU least recently used 851LS link state 852LSAN Leak Sanitizer 853LSB Linux standards base 854LSB least significant {bit,byte} 855LSI large scale integration 856LSL load segment limit 857LSM log structured merge 858LSN Large Scale NAT 859LSN log sequence number 860LSR label switch router 861LTCC low temperature co-fired ceramic 862LTO linear tape-open 863LTO link time optimization 864LTR left to right 865LTR load task register 866LTR letter(-sized paper) 867LTS long term support 868LUA Lua Uppercase Accident 869LUN logical unit number 870LV logical volume 871LVM logical volume management 872LVT local vector table 873LVDS Low-Voltage Differential Signaling 874LWP light-weight process 875LZSS Lempel Ziv Storer Szymanski 876LZW Lempel Ziv Welch 877MAB MAC authentication bypass 878MAC mandatory access control 879MAC {media,medium} access control 880MAC message authentication {check,code} 881MADT multiple APIC descriptor table 882MAMR microwave-assisted magnetic recording 883MB megabyte 884MBA multi-boot agent 885MBR master boot record 886MBS megabits per second 887MC memory controller 888MCA machine check architecture 889MCA MicroChannel architecture 890MCC multiversion concurrency control 891MCE machine check exception 892MCGA Multi-Color Graphics Array 893MCH memory controller hub 894MCLAG multi-chassis link aggregation 895MCM multi-chip module 896MCQ memory controlled queue 897MD machine-dependent 898MD-SAL model-driven service abstraction layer 899MDA mail delivery agent 900MDA Monochrome Display Adapter 901MDC Management Data Clock 902MDI Medium Dependent Interface 903MDI-X Medium Dependent Interface Crossover 904MDIO Management Data Input/Output 905MDMX MIPS Digital Media eXtension 906MDRAM multibank dynamic random access memory 907MESI modified, exclusive, shared, invalid 908MFC merge from current 909MFC Microsoft Foundation Classes 910MFM modified frequency modulation 911MFU most frequently used 912MGCP media gateway control protocol 913MI machine-independent 914MI machine interface 915MIB management information base 916MIC message integrity {check,code} 917MID mobile Internet device 918MIDI musical instrument digital interface 919MIF management information format 920MII media independent interface 921MIM man in the middle 922MIMD multiple instruction, multiple data 923MIME Multipurpose Internet Mail Extensions 924MIMO multiple input multiple output 925MIPS million instructions per second 926MIPS Microprocessor without Interlocked Pipeline Stages 927MISD multiple instruction, single data 928MIT Massachusetts Institute of Technology 929MITM man in the middle 930ML machine language 931ML machine learning 932ML mailing list 933ML markup language 934ML maximum likelihood 935MLC multi-level cell 936MLD multicast listener discovery 937MLHP micro loop heat pipe 938MMF multi-mode fiber 939MMIC monolithic microwave integrated circuit 940MMIO memory mapped input/output 941MMORPG massive multiplayer online role playing game 942MMRP multiple MAC registration protocol 943MMU memory management unit 944MMX matrix math extension 945MMX multimedia extension 946MMX multiple math extension 947MO magneto-optical 948MOESI modified, owned, exclusive, shared, invalid 949MOF maximum operating frequency 950MOSFET metal-oxide-semiconductor field-effect transistor 951MOSI modified, owned, shared, invalid 952MP multi-platform 953MP multiplayer 954MP {multiprocessing,multiprocessor} 955MPEG moving picture experts group 956MPI message passing interface 957MPLS Multiprotocol Label Switching 958MPP massively parallel processor 959MPS memory pool system 960MPS multiprocessor specification 961MQTT Message Queuing Telemetry Transport 962MR modem ready 963MRO method resolution order 964MRP multiple registration protocol 965MRU most recently used 966MS Microsoft 967MSAN Memory Sanitizer 968MSB most significant {bit,byte} 969MSC message sequence chart 970MSE mean square error 971MSF minutes seconds frames 972MSI message signaled interrupt 973MSI modified, shared, invalid 974MSR {machine state,model-specific} register 975MSS maximum segment size 976MSTP Multiple Spanning Tree Protocol 977MT machine translation 978MTA mail transfer agent 979MTBF mean time between failures 980MTP media transfer protocol 981MTRR memory type range register 982MTTF mean time to failure 983MTU maximum transmission unit 984MUA mail user agent 985MUD multi-user domain 986MVCC multiversion concurrency control 987MVR multicast VLAN registration 988MVRP multiple VLAN registration protocol 989MWE module width encoding 990MX mail exchange 991NACK negative acknowledgement 992NAK negative acknowledgement 993NAN not a number 994NAPT Network Address Port Translation 995NAS network attached storage 996NAT network address translation 997NAV network allocation vector 998NC numerical control 999NC-SI network controller sideband interface 1000NCO numerically-controlled oscillator 1001NCP Network Control Protocol 1002NCSI network connectivity status indicator 1003NCQ native command queuing 1004ND neighbor discovery 1005NDFA nondeterministic finite automaton 1006NDIS network driver interface specification 1007NE numeric error 1008NEWS Network extensible Window System 1009NFA nondeterministic finite automaton 1010NFC near-field communication 1011NFCI no functional change intended 1012NFS network file system 1013NFV network function virtualization 1014NIA next instruction address 1015NIC network information center 1016NIC network interface card 1017NIDS network intrusion detection system 1018NIP network interface protocol 1019NIPS network intrusion prevention system 1020NIS network information service 1021NIST National Institute of Standards and Technology 1022NLS native language support 1023NMI non-maskable interrupt 1024NNTP Network News Transfer Protocol 1025NOC network operations center 1026NOP no operation 1027NOS network operating system 1028NP nondeterministic polynomial time 1029NRND not recommended for new designs 1030NRZ non-return to zero 1031NSA nation-state adversary 1032NSA no such agency 1033NSA National Security Agency 1034NTM non-deterministic Turing machine 1035NTP Network Time Protocol 1036NUMA non-uniform memory access 1037NVMM NetBSD Virtual Machine Monitor 1038NVMM non-volatile main memory 1039NVRAM non-volatile random access memory 1040NW not write-through 1041NX no execute 1042OAEP optimal asymmetric encryption padding 1043OAM operations, administration, and {management,maintenance} 1044OBO off by one 1045OBOE off by one error 1046OCL object constraint language 1047OCR optical character recognition 1048ODE offline device environment 1049ODI open data-link interface 1050ODM object data manager 1051ODCM on-demand clock modulation 1052ODT on-die termination 1053OEM original equipment manufacturer 1054OFB output feedback 1055OFDM orthogonal frequency division multiplexing 1056OFET organic field-effect transistor 1057OLAP online analytical processing 1058OLE object linking and embedding 1059OLTP online transaction processing 1060ONFI open nand flash interface 1061OO OpenOffice 1062OO object oriented 1063OOB out of band 1064OOE out of order execution 1065OOM out of memory 1066OOO OpenOffice.org 1067OOP object oriented programming 1068OOPS object oriented programming systems 1069OOSE object oriented software engineering 1070OPM operations per minute 1071OPS operations per second 1072OQL Object Query Language 1073ORB object request broker 1074ORM object-relational mapping 1075OS operating system 1076OSD open source definition 1077OSF open software foundation 1078OSI Open Source Initiative 1079OSI open systems interconnection 1080OSPF open shortest path first 1081OSPM OS power management 1082OSS open sound system 1083OSS open source software 1084OSVW operating system visible workarounds 1085OTP one time password 1086OTP open telecom platform 1087OU organizational unit 1088OUI organizationally unique identifier 1089OWL Web Ontology Language 1090P2P PCI to PCI 1091P2P peer to peer 1092PA phase accumulator 1093PA physical address 1094PAAS platform as a service 1095PAC phase-amplitude converter 1096PAE physical address extension 1097PAGP port aggregation protocol 1098PAL phase alternating line 1099PAL programmable array logic 1100PAM pluggable authentication modules 1101PAM pulse amplitude modulation 1102PAP password authentication protocol 1103PAT page attribute table 1104PAT port address translation 1105PATA parallel ATA 1106PAX portable archive exchange 1107PBE pending break encoding 1108PBE programming by example 1109PC personal computer 1110PC program counter 1111PCB printed circuit board 1112PCB process control block 1113PCB Protocol Control Block 1114PCC Portable C Compiler 1115PCD page-level cache disable 1116PCE path computation element 1117PCE performance-monitor counter enable 1118PCEP Path Computation Element Protocol 1119PCH platform controller hub 1120PCI peripheral component interconnect 1121PCM phase change memory 1122PCM pulse code modulation 1123PCMCIA Personal Computer Memory Card International Association 1124PCP Port Control Protocol 1125PD public domain 1126PDA personal digital assistant 1127PDA pushdown automaton 1128PDAG propositional directed acyclic graph 1129PDB power distribution board 1130PDF portable document format 1131PDM pulse-duration modulation 1132PDN pull-down network 1133PDP page {descriptor,directory} page 1134PDS product data sheet 1135PDU protocol data unit 1136PE protection enable 1137PE provider edge 1138PEAP Protected EAP 1139PECI platform environment control interface 1140PEP protocol extension protocol 1141PER packed encoding rules 1142PFS perfect forward secrecy 1143PGAS partitioned global address space 1144PGE page global enable 1145PGP Pretty Good Privacy 1146PHB PCI host bridge 1147PHP PHP: Hypertext Preprocessor 1148PIC performance instrumentation counters 1149PIC position independent code 1150PIC programmable interrupt controller 1151PICNIC problem in chair, not in computer 1152PID process id 1153PIE position independent executable 1154PIL Priority Interrupt Level 1155PIM personal information manager 1156PIM platform-independent model 1157PIO programmed input/output 1158PIPT physically indexed, physically tagged 1159PIQ prefetch input queue 1160PIT programmable interrupt timer 1161PIV personal identity verification 1162PIX Private Internet eXchange 1163PKCS public-key cryptography standards 1164PKI public key infrastructure 1165PLC programmable logic controller 1166PLD programmable logic device 1167PLL phase locked loop 1168PLRU pseudo LRU 1169PLTM package level thermal management 1170PM power management 1171PM {phase,pulse} modulation 1172PMC performance monitoring counters 1173PME power management event 1174PMEG page map entry group 1175PMI performance monitoring infrastructure 1176PMI platform management interrupt 1177PMIC power management integrated circut 1178PMIO port-mapped input/output 1179PMT photo-multiplier tube 1180PMU performance monitoring units 1181PMU power management unit 1182PNG portable network graphics 1183PNP plug and play 1184POE power over ethernet 1185POF probability of failure 1186POP Post Office Protocol 1187POP power on password 1188POSIX Portable Operating System Interface [for Unix] 1189POST power on self test 1190POTS plain old telephone system 1191POWER Performance Optimization With Enhanced RISC 1192POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1193PP pair programming 1194PPB PCI [to] PCI bridge 1195PPC PowerPC 1196PPC Power Performance Computing 1197PPI pixels per inch 1198PPM pages per minute 1199PPP Point-to-Point Protocol 1200PPPOA Point-to-Point Protocol over ATM 1201PPPOE Point-to-Point Protocol over Ethernet 1202PPU physics processing unit 1203PRAM Parameter RAM 1204PRBS pseudorandom bit sequence 1205PRG pseudorandom generator 1206PRF pseudorandom function [family] 1207PRML partial response, maximum likelihood 1208PRN pseudorandom {noise,number} 1209PRNG pseudorandom number generator 1210PROM programmable read only memory 1211PRP pseudorandom permutation 1212PRU Programmable Realtime Unit 1213PS PostScript 1214PSD power spectral density 1215PSE page size extensions 1216PSK phase shift keying 1217PSK pre-shared key 1218PSTN public switched telephone network 1219PSW program status word 1220PTE page table entry 1221PTLA pseudo top level aggregator 1222PTP page table page 1223PTV perceived target value 1224PU processing unit 1225PUC personal unblocking code 1226PUN physical unit number 1227PV physical volume 1228PVC permanent virtual circuit 1229PVG physical volume group 1230PVI protected-mode virtual interrupt 1231PVRST Per-VLAN rapid spanning tree 1232PVST Per-VLAN Spanning Tree 1233PWM pulse width modulation 1234PXE preboot execution environment 1235QA quality assurance 1236QAM quadrature amplitude modulation 1237QAM quality assurance management 1238QBE query by example 1239QC quality control 1240QDI quasi delay insensitive 1241QCIF quarter common intermediate format 1242QOS quality of service 1243QVL qualified vendor list 1244R/O read only 1245R/W read/write 1246RA receiver address 1247RA remote assistance 1248RA resource affinity 1249RA router advertisement 1250RAD rapid application development 1251RADIUS remote authentication dial-in user service 1252RAID redundant array of {independent,inexpensive} disks 1253RAM random access memory 1254RAS reliability, availability and serviceability 1255RAS remote access service 1256RAS restartable atomic sequence 1257RAS row address strobe 1258RBF radial basis function 1259RBNF routing backus-naur form 1260RBT red-black tree 1261RC release candidate 1262RC remote control 1263RC run commands 1264RCS Revision Control System 1265RCS revision control system 1266RCU read, copy, update 1267RDB Rigid Disk Block 1268RDBMS relational database management system 1269RDF Resource Description Framework 1270RDM relational data model 1271RDMA remote direct memory access 1272RDRAM Rambus DRAM 1273RE regular expression 1274REST representational state transfer 1275RF radio frequency 1276RFI radio frequency interference 1277RFO request for ownership 1278RFU reserved for future use 1279RGB red green blue 1280RGBA red green blue alpha 1281RGMII reduced gigabit media independent interface 1282RH read hit 1283RHEL Red Hat Enterprise Linux 1284RHL Red Hat Linux 1285RIB routing information base 1286RIFF Resource Interchange File Format 1287RIP Raster Image Processor 1288RIP Routing Information Protocol 1289RIR regional Internet registry 1290RISC reduced instruction set {computer,computing} 1291RKM ROM Kernel Manual 1292RLE run length encoding 1293RLL run length limited 1294RLO right-to-left override 1295RM read miss 1296RMCP Remote Management Control Protocol 1297RMI remote method invocation 1298RMO Relaxed Memory Ordering 1299RMPM rapid memory power management 1300RMS root mean square 1301RMW read, modify, write 1302RNG random number generator 1303ROM read only memory 1304RPC remote procedure call 1305RPKI resource PKI 1306RPL requested privilege level 1307RPM revolutions per minute 1308RPN reverse Polish notation 1309RPVST Rapid Per-VLAN Spanning Tree 1310RR random replacement 1311RR round robin 1312RS relay station 1313RSA Rivest, Shamir, [and] Adleman 1314RSIP Realm Specific IP 1315RSN Robust Secure Network 1316RSS really simple syndication 1317RSS residual sum of squares 1318RSTP Rapid Spanning Tree Protocol 1319RT real time 1320RTC real time clock 1321RTC real time computing 1322RTF rich text format 1323RTL register transfer language 1324RTL resistor-transistor logic 1325RTL right to left 1326RTOS real time operating system 1327RTS request to send 1328RTT round trip time 1329RUP rational unified process 1330RW Rabin-Williams 1331RWM read-write memory 1332RX {receive,receiver} 1333S/PDIF Sony/Philips Digital Interface Format 1334SA security advisory 1335SA security association 1336SA source address 1337SA structured analysis 1338SAAS software as a service 1339SABRE Semi-automated business research environment 1340SACD super audio compact disc 1341SAD security association database 1342SAGE Semi-automated ground environment 1343SAL {service,system} abstraction layer 1344SAM serial access memory 1345SAM sum addressed memory 1346SAML security assertion markup language 1347SAN storage area network 1348SAP service access point 1349SAPIC streamlined advanced programmable interrupt controller 1350SASD structured analysis, structured design 1351SASI Shugart Associates System Interface 1352SASL simple authentication [and] security layer 1353SATA serial advanced technology attachment 1354SAX simple API for XML 1355SB sound blaster 1356SBSA server base system architecture 1357SBU standard build unit 1358SC store conditional 1359SCA source code analyzer 1360SCADA supervisory control and data acquisition 1361SCC single chip cloud 1362SCC source code control 1363SCCP skinny call control protocol 1364SCCS Source Code Control System 1365SCI scalable coherent interface 1366SCI system control interrupt 1367SCM software configuration management 1368SCM source code management 1369SCM storage-class memory 1370SCO synchronous connection orientated 1371SCP secure copy 1372SCSI Small Computer System Interface 1373SCTP Stream Control Transmission Protocol 1374SDEI software delegated exception interface 1375SDI symbol deinterleave 1376SDK software development kit 1377SDL Simple Declarative Language 1378SDL Simple Direct-media Layer 1379SDLC {software,system,systems} development life cycle 1380SDN software defined networking 1381SDP Session Description Protocol 1382SDRAM synchronous dynamic random access memory 1383SDS software defined storage 1384SDT syntax-directed translation 1385SEA synchronous external abort 1386SEGV segmentation violation 1387SED self-encrypting drive 1388SED stream editor 1389SEO search engine optimization 1390SES SCSI enclosure services 1391SFC sequential function chart 1392SFI simple firmware interface 1393SFI software fault isolation 1394SFTP SSH File Transfer Protocol 1395SFTP Serial File Transfer Protocol 1396SFTP Simple File Transfer Protocol 1397SGMII serial gigabit media independent interface 1398SGRAM synchronous graphics random access memory 1399SHA secure hash algorithm 1400SIDH supersingular isogeny Diffie-Hellman 1401SIEM security information and event management 1402SIF source input format 1403SIFS short inter-frame space 1404SIM subscriber identity module 1405SIMD single instruction, multiple data 1406SIMM single inline memory module 1407SIP Session Initiation Protocol 1408SIR signal-to-interference ratio 1409SIR slow infrared 1410SISD single instruction, single data 1411SLAAC stateless address auto-configuration 1412SLC single-level cell 1413SLDRAM synchronous-link dynamic random access memory 1414SLED single large expensive disk 1415SLI scalable link interface 1416SLI scan-line interleave 1417SLIC system license internal code 1418SLOC source lines of code 1419SLRU segmented LRU 1420SMA smart memory access 1421SMAF system management action field 1422SMAP Simple Mail Access Protocol 1423SMAP supervisor mode access prevention 1424SMART self-monitoring analysis and reporting technology 1425SMB Server Message Block 1426SMB system management bus 1427SMBIOS System Management BIOS 1428SMC system management controller 1429SMD storage module device 1430SMEP supervisor mode execution protection 1431SMF single mode fiber 1432SMI structure of management information 1433SMI system management interrupt 1434SMM system management mode 1435SMP serial management protocol 1436SMP symmetric multiprocessing 1437SMT simultaneous multithreading 1438SMTP Simple Mail Transfer Protocol 1439SMU system management unit 1440SNA systems network architecture 1441SNAP Sub-Network Access Protocol 1442SNIA Storage Networking Industry Association 1443SNMP Simple Network Management Protocol 1444SNR signal-to-noise ratio 1445SOA service oriented architecture 1446SOAP Simple Object Access Protocol 1447SOC system on chip 1448SOF start of frame 1449SOH start of header 1450SOHO small office/home office 1451SOL serial over LAN 1452SOM system on module 1453SP service pack 1454SP stack pointer 1455SPA storage pool allocator 1456SPAN switched port analyzer 1457SPARC scalable processor architecture 1458SPARQL SPARQL Protocol and RDF Query Language 1459SPD security policy database 1460SPD serial presence detect 1461SPDIF Sony/Philips digital interface format 1462SPI serial peripheral interface 1463SPI stateful packet inspection 1464SPL system interrupt priority level 1465SPL spinlock 1466SPMD single process, multiple data 1467SPR special purpose register 1468SPT sectors per track 1469SQA software quality assurance 1470SQCIF sub quarter common intermediate format 1471SQL Structured Query Language 1472SRAM static random access memory 1473SRC sample rate conversion 1474SRP SCSI RDMA protocol 1475SRR shaped round robin 1476SS self-snoop 1477SS stack segment 1478SSA static single assignment 1479SSAP source service access point 1480SSB single-sideband modulation 1481SSD solid state drive 1482SSE streaming SIMD extensions 1483SSFDC solid state floppy disc card 1484SSH secure shell 1485SSI server side includes 1486SSID service set identifier 1487SSL secure sockets layer 1488SSP stack smashing protection 1489STC software thermal control 1490STD state transition diagram 1491STOMP Streaming Text Oriented Messaging Protocol 1492STP Spanning Tree Protocol 1493STP shielded twisted pair 1494STRG spanning tree root guard 1495SUN Stanford University Network 1496SUS Single Unix Specification 1497SUT system under test 1498SVC switched virtual circuit 1499SVG scalable vector graphics 1500SVGA Super Video Graphics Array 1501SVI {switch,switched} virtual interface 1502SVM secure virtual machine 1503SVM support vector machine 1504SVR System V Release 1505SVS Separate Virtual Space 1506SWF Shockwave Flash 1507SWIG simplified wrapper [and] interface generator 1508SYR symbol timing recovery 1509TA test assertion 1510TA transmitter address 1511TACACS terminal access controller access-control system 1512TAI international atomic time 1513TAO track at once 1514TAOCP The Art of Computer Programming 1515TAP Test Anything Protocol 1516TAS test and set 1517TB terabyte 1518TBNF transitional backus-naur form 1519TCB trace capture buffer 1520TCB trusted computing base 1521TCC thermal control circuit 1522TCL tool command language 1523TCP Transmission Control Protocol 1524TCQ tagged command queueing 1525TDC time [to] digital converter 1526TDD test-driven development 1527TDD time division duplex 1528TDM time division multiplexing 1529TDMA time division multiple access 1530TDOA time difference of arrival 1531TDP thermal design {point,power} 1532TDR time-domain reflectometry 1533TECO Text Editor and Corrector 1534TFT thin film transistor 1535TFTP Trivial File Transfer Protocol 1536TIAS try it and see 1537TIFF tagged image file format 1538TITS try it to see 1539TK temporal key 1540TKIP Temporal Key Integrity Protocol 1541TLA top level aggregator 1542TLB translation lookaside buffer 1543TLD top level domain 1544TLER time-limited error recovery 1545TLI transport layer interface 1546TLS thread local storage 1547TLS transport layer security 1548TM Turing machine 1549TM thermal monitor 1550TMG transmogrifier 1551TMDS transition minimized differential signaling 1552TMO timeout 1553TOD time of day 1554TOS terms of service 1555TOS trusted operating system 1556TOS type of service 1557TP transaction processing 1558TPI tracks per inch 1559TPM transactions per minute 1560TPM trusted platform module 1561TPR task priority register 1562TPS transactions per second 1563TPS transmission parameters signaling 1564TR task register 1565TR token ring 1566TRL timing recovery loop 1567TRNG true random number generator 1568TS terminal services 1569TS time series 1570TS time stamp 1571TS transport stream 1572TSAN Thread Sanitizer 1573TSC time stamp counter 1574TSD time stamp disable 1575TSDB time series database 1576TSL test, set, lock 1577TSO time sharing option 1578TSO Total Store Ordering 1579TSP Time-Stamp Protocol 1580TSP Tunnel Setup Protocol 1581TSP time synchronization protocol 1582TSP traveling salesman problem 1583TSS task state segment 1584TTL time to live 1585TTL transistor-transistor logic 1586TTM translation table maps 1587TTY teletype 1588TUI {terminal,text-based,textual} user interface 1589TX {transmit out,transmitter} 1590TXG transaction group 1591TZ time zone 1592UAC user {access,account} control 1593UAF use-after-free 1594UART universal asynchronous receiver/transmitter 1595UAT user acceptance testing 1596UB undefined behavior 1597UBSAN Undefined Behavior Sanitizer 1598UC uncacheable 1599UCS uniform-cost search 1600UCS unified computing system 1601UCS universal coded character set 1602UDI uniform driver interface 1603UDMA ultra DMA 1604UDO ultra density optical 1605UDP User Datagram Protocol 1606UEFI unified extensible firmware interface 1607UFS Unix File System 1608UGA universal graphics adapter 1609UI unit interval 1610UI user interface 1611UICC universal integrated circuit card 1612UID unique identifier 1613UID user identifier 1614UL upload 1615UMA uniform memory access 1616UMA upper memory area 1617UMB upper memory block 1618UML unified modeling language 1619UMPC ultra-mobile PC 1620UPNP universal plug and play 1621UPS uninterruptible power supply 1622URI uniform resource identifier 1623URL uniform resource locator 1624URN uniform resource name 1625USART universal synchronous/asynchronous receiver/transmitter 1626USB universal serial bus 1627USWC uncacheable speculative write combining 1628UT unit test 1629UTC coordinated universal time 1630UTF unicode transformation formats 1631UTP unshielded twisted pair 1632UUCP Unix-to-Unix Copy Protocol 1633UUID universally unique identifier 1634UUOC useless use of cat 1635UUT unit under test 1636UX user experience 1637VA vertical alignment 1638VA virtual address 1639VA volt-ampere 1640VAX virtual address extension 1641VB Visual Basic 1642VCA variable-gain amplifier 1643VCC common collector voltage 1644VCCP virtual chassis control protocol 1645VCF voltage-controlled filter 1646VCM virtual channel memory 1647VCO voltage-controlled oscillator 1648VCP virtual chassis port 1649VCS version control system 1650VES virtual execution system 1651VESA Video Electronics Standards Association 1652VFO variable-frequency oscillator 1653VFS virtual file system 1654VG volume group 1655VGA Video Graphics Array 1656VHDCI very high density cable interconnect 1657VID {VLAN,voltage level} identifier 1658VIM Vi IMproved 1659VIPT virtually indexed, physically tagged 1660VIVT virtually indexed, virtually tagged 1661VLAN virtual local area network 1662VLIW very long instruction word 1663VLSI very large scale integration 1664VLSM variable length subnet mask 1665VM virtual {machine,memory} 1666VME virtual mode extension 1667VMX vector multimedia extensions 1668VMX virtual machine extensions 1669VOD video on demand 1670VPD vital product data 1671VPN virtual private network 1672VPWS virtual private wire service 1673VR virtual reality 1674VRAM video random access memory 1675VRF virtual routing and forwarding 1676VRM voltage regulator module 1677VROC Virtual RAID On CPU 1678VRRP Virtual Router Redundancy Protocol 1679VSTP VLAN Spanning Tree Protocol 1680VTP VLAN Trunking Protocol 1681VXFS Veritas file sytem 1682VXVM Veritas volume manager 1683W watt 1684W3C World Wide Web Consortium 1685WAFL write anywhere file layout 1686WAMP Web Application Messaging Protocol 1687WAN wide area network 1688WAP Wireless Application Protocol 1689WAP wireless access point 1690WDM Windows Driver Model 1691WDDM Windows Display Driver Model 1692WDT watchdog timer 1693WEP Wired Equivalent Privacy 1694WFI wait for interrupt 1695WFQ weighted fair queuing 1696WH write hit 1697WIFI wireless fidelity 1698WLAN wireless local area network 1699WM write miss 1700WMI Windows Management Instrumentation 1701WOL Wake-on-LAN 1702WOM Wake-on-Modem 1703WOR Wake-on-Ring 1704WORM write once read many 1705WP WordPerfect 1706WP word processor 1707WP write protect 1708WPA Wi-Fi Protected Access 1709WPA2 Wi-Fi Protected Access II 1710WPS Wi-Fi Protected Setup 1711WRAM window random access memory 1712WS web services 1713WTC write through caching 1714WTD weighted tail drop 1715WWAN wireless wide area network 1716WWW world wide web 1717WYSIAYG what you see is all you get 1718WYSIWYG what you see is what you get 1719XBAR crossbar 1720XDMCP X Display Manager control protocol 1721XER XML encoding rules 1722XGA Extended Graphics Array 1723XHR XMLHttpRequest 1724XIP execute in place 1725XML Extensible Markup Language 1726XNA XNA's not acronymed 1727XNS Xerox network systems 1728XOR exclusive or 1729XP extreme programming 1730XSI X/Open System Interface 1731XSL extensible stylesheet language 1732XSLT extensible stylesheet language transformations 1733XSS cross site scripting 1734XT extended technology 1735XTACACS extended terminal access controller access-control system 1736XTI X/Open transport interface 1737XUL XML user interface language 1738YACC yet another compiler compiler 1739YAML YAML ain't markup language 1740YANG yet another next generation 1741YAWPFAPR you are welcome; please file a problem report 1742YP Yellow Pages 1743YTD year to date 1744ZAP ZFS attribute processor 1745ZBR zone bit recording 1746ZFOD zero-filled on demand 1747ZFS zettabyte file system 1748ZIF zero insertion force 1749ZIFS zero insertion force socket 1750ZIL ZFS intent log 1751ZMA zone multicast address 1752ZOI zero one infinity 1753ZOI zone of influence 1754ZPL ZFS Posix layer 1755ZVOL ZFS Volume 1756