acronyms.comp revision 1.258
1$NetBSD: acronyms.comp,v 1.258 2019/06/04 17:46:28 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 44ALU arithmetic and logical unit 45ALUA asymmetric logical unit access 46AM access method 47AM alignment mask 48AM amplitude modulation 49AMD Advanced Micro Devices Inc 50AMDD Agile model-driven development 51AMI alternate mark inversion 52AMP asymmetric multiprocessing 53AMQP advanced message queuing protocol 54AMT active management technology 55AN Arabic number 56ANR application not responding 57ANSI American National Standards Institute 58AO analog output 59AOL Alert-on-LAN 60AOS add or subtract 61AP access point 62AP application processor 63API application programming interface 64APEI ACPI platform error interface 65APIC advanced programmable interrupt controller 66APIPA automatic private IP addressing 67APM advanced power management 68APM application performance management 69APU accelerated processing unit 70APT advanced persistent threat 71AQM active queue management 72ARAT always running APIC timer 73ARC adaptive replacement cache 74ARC Advanced RISC Computing 75ARC automatic reference counting 76ARM Advanced RISC Machines 77ARP Address Resolution Protocol 78ARPA Advanced Research Projects Agency 79ARQ automatic repeat request 80ARR address range register 81ARU audio response unit 82AS autonomous system 83ASA Adaptive Security Appliance 84ASAN Address Sanitizer 85ASC advanced smart cache 86ASCII American Standard Code for Information Interchange 87ASD agile software development 88ASE advanced software environment 89ASF alert standard format 90ASIC application-specific integrated circuit 91ASK amplitude shift keying 92ASLR address space layout randomization 93ASN autonomous system number 94ASP active server pages 95ASP auxiliary storage pool 96ASPM active state power management 97ASQ automated software quality 98ASR address space register 99AST abstract syntax tree 100AST asynchronous system trap 101AT access time 102AT advanced technology 103ATA advanced technology attachment 104ATAPI advanced technology attachment packet interface 105ATC address translation cache 106ATM asynchronous transfer mode 107ATX advanced technology extended 108AV anti virus 109AVB audio video bridging 110AVL Adelson-Velsky-Landis 111AVX advanced vector extensions 112BA byte align 113BAL basic assembly language 114BAR base address register 115BBS bulletin board system 116BCC blind carbon copy 117BCD binary coded decimal 118BCH boot console handler 119BCR byte count register 120BCS base configuration space 121BD baud 122BDD binary decision diagram 123BDI bit deinterleave 124BDUF big design up front 125BEDO burst extended data output 126BER basic encoding rules 127BER bit error {rate,ratio} 128BERT boot error record table 129BFD binary {file,format} descriptor 130BFKL big fscking kernel lock 131BFS breadth-first search 132BFT binary file transfer 133BGA ball grid array 134BGP Border Gateway Protocol 135BGPSEC BGP Security 136BIND Berkeley Internet Name Daemon 137BIOS Basic Input/Output System 138BIOS built-in operating system 139BIST built-in self-test 140BIU bus interface unit 141BKDG BIOS and kernel developer's guide 142BLAS basic linear algebra subprograms 143BLC back light control 144BLOB binary large object 145BM bus master 146BMC baseboard management controller 147BMIC bus master interface controller 148BN boundary neutral 149BNF Backus-Naur form 150BO binary output 151BOF beginning of file 152BOM beginning of message 153BOM byte order mark 154BP base pointer 155BP boot processor 156BPB BIOS parameter block 157BPDU bridge protocol data unit 158BPF Berkeley Packet Filter 159BPI bits per inch 160BPM business process modelling 161BPS bits per second 162BPSK binary phase shift keying 163BQS Berkeley quality software 164BRE basic regular expression 165BS backspace 166BS binary sequence 167BSA basic service area 168BSD Berkeley Software Distribution 169BSDP Boot Service Discovery Protocol 170BSF bit scan forward 171BSOD blue screen of death 172BSP binary space partition 173BSP board support package 174BSP bootstrap processor 175BSR bit scan reverse 176BSS basic service set 177BSS block started by symbol 178BSSID basic service set identifier 179BT BitTorrent 180BT Bluetooth 181BT bit test 182BTC bit test [and] complement 183BTM bus transport mechanism 184BTR bit test [and] reset 185BTS bit test [and] set 186BTS bug tracking system 187BW bandwidth 188BWM block-write mode 189BUAG big ugly ASCII graphic 190CA certificate authority 191CAD computer-aided design 192CAM computer assisted manufacturing 193CAM conditional access module 194CAM content addressable memory 195CARP Common Address Redundancy Protocol 196CAS column address strobe 197CAS compare and swap 198CAS computer algebra system 199CASE computer aided software engineering 200CAU control access unit 201CAV constant angular velocity 202CBC cipher block chaining 203CBR constant bit rate 204CC carbon copy 205CCD charge coupled device 206CCI co-channel interferer 207CCNUMA cache-coherent non-uniform memory access 208CCTL command completion time limit 209CD cache disable 210CD compact disc 211CDDA compact disc digital audio 212CDL compiler description language 213CDMA code division multiple access 214CDP Cisco Discovery Protocol 215CDRAM cache dynamic random access memory 216CER canonical encoding rules 217CE customer edge 218CF compact flash 219CFB cipher feedback 220CFG context-free grammar 221CFG control-flow graph 222CFI control-flow integrity sanitizer 223CG control gate 224CGA Color Graphics Adapter 225CGI common gateway interface 226CGN Carrier-Grade NAT 227CHAP Challenge-Handshake Authentication Protocol 228CHS cylinder/head/sector 229CI continuous integration 230CI {common,component} interface 231CIDR Classless Inter-Domain Routing 232CIF common intermediate format 233CIFS Common Internet File System 234CIL common intermediate language 235CIR carrier-to-interference ratio 236CIS contact image sensor 237CISC complex instruction set {computer,computing} 238CJK Chinese, Japanese, [and] Korean 239CLF common log format 240CLI command line interface 241CLR common language runtime 242CLTT closed loop thermal throttling 243CLUT color look-up table 244CLV constant linear velocity 245CM configuration management 246CMA concert multithread architecture 247CMC chassis management controller 248CMC corrected machine check 249CMS {configuration,content,course} management system 250CMI control {management,method} interface 251CMOS complementary metal-oxide-semiconductor 252CMP chip multi-processing 253CMS content management system 254CMYK cyan magenta yellow black 255CN {common,canonical} name 256CNC computer numerical control 257CNR carrier-to-noise ratio 258COF current operating frequency 259COFDM coded orthogonal frequency division multiplexing 260COFF common object file format 261COM component object model 262COM computer on module 263COMA cache-only memory architecture 264CORBA common object request broker architecture 265COS class of service 266COW copy-on-write 267CP continuous pilot 268CPB core performance boost 269CPC central processor complex 270CPC cpu performance counters 271CPE common phase error 272CPE common platform enumeration 273CPER common platform error record 274CPG clock pulse generator 275CPI cycles per instruction 276CPL current privilege level 277CPLD complex programmable logic device 278CPP C preprocessor 279CPS characters per second 280CPS continuation-passing style 281CPT command pass through 282CPU central processing unit 283CR carriage return 284CRC cyclic redundancy check 285CRL carrier recovery loop 286CRLF carriage return line feed 287CRT cathode ray tube 288CRUD create, read, update, and delete 289CS cable select 290CS chip select 291CS code segment 292CS computer science 293CSDL {common,conceptual} schema definition language 294CSI channel state information 295CSI common system interface 296CSMA carrier sense multiple access 297CSMA/CA carrier sense multiple access with collision avoidance 298CSMA/CD carrier sense multiple access with collision detection 299CSP communicating sequential processes 300CSP content security policy 301CSP constrain satisfaction problems 302CSP cryptographic service provider 303CSR control [and] status registers 304CSRG Computer Systems Research Group 305CSS cascading style sheets 306CSV comma-separated values 307CTF compact c type format 308CTM close to metal 309CTR counter [mode] 310CTS clear to send 311CUA common user access 312CUT coordinated universal time 313CV control voltage 314CVE common vulnerabilities and exposures 315CVS Concurrent Versions System 316DA destination address 317DAA distributed application architecture 318DAB digital audio broadcasting 319DAC digital [to] analog converter 320DAC discretionary access control 321DAD duplicate address detection 322DANE DNS-based Authentication of Named Entities 323DAO disk at once 324DAP Directory Access Protocol 325DAT digital audio tape 326DAT dynamic acceleration technology 327DB database 328DBA database administrator 329DBA dynamic bandwidth allocation 330DBB data bus buffer 331DBC design by contract 332DBL dynamic buffer limiting 333DBMS database management system 334DBS database server 335DC direct current 336DCC Direct Client-to-Client 337DCC direct cable connect 338DCD data carrier detect 339DCE data control equipment 340DCE distributed computing environment 341DCIM data center infrastructure management 342DCIM digital camera images 343DCL Digital Command Language 344DCOM distributed component object model 345DCOP Desktop COmmunication Protocol 346DCS data collection systems 347DCT discrete cosine transform 348DCU data cache unit 349DDC display data channel 350DDE dynamic data exchange 351DDK device driver kit 352DDL data description language 353DDR double data rate 354DDS direct digital sound 355DDWG Digital Display Working Group 356DE debugging extensions 357DE desktop environment 358DEA data encryption algorithm 359DEC Digital Equipment Corporation 360DEK data encryption key 361DEP data execution prevention 362DER distinguished encoding rules 363DES Data Encryption Standard 364DF don't fragment 365DFA deterministic finite automaton 366DFC data flow control 367DFS depth first search 368DFS distributed file system 369DFSAN Data Flow Sanitizer 370DFT diagnostic function test 371DFT discrete Fourier transform 372DGL data generation language 373DH Diffie-Hellman 374DHCP Dynamic Host Configuration Protocol 375DIFS distributed inter-frame space 376DIMM dual inline memory module 377DIRT design in real time 378DL diode logic 379DL discrete logarithm 380DL download 381DLCI data link connection identifier 382DLE data link escape 383DLL dynamic link library 384DLP discrete logarithm problem 385DMA direct memory access 386DMI desktop management interface 387DMS document management system 388DMT discrete multitone modulation 389DMU data management layer 390DNARD Digital network appliance reference design 391DND drag and drop 392DNLC directory name lookup cache 393DNS Domain Name System 394DNSSEC DNS Security Extensions 395DOE distributed object environment 396DOF data over fibre 397DOM document object model 398DOS denial of service 399DOS disk operating system 400DP DisplayPort 401DPC deferred procedure call 402DPCM differential pulse code modulation 403DPD dead peer detection 404DPI deep packet inspection 405DPI dots per inch 406DPL descriptor privilege level 407DPS Display PostScript 408DPST display power savings technology 409DRAAS disaster recovery as a service 410DRAM dynamic random access memory 411DRBG deterministic random bit generator 412DRI direct rendering infrastructure 413DRM digital rights management 414DRRS display refresh rate switching 415DS debug store 416DSA digital signature algorithm 417DSAP destination service access point 418DSB double-sideband modulation 419DSDT differentiated system descriptor table 420DSF device special file 421DSL dataset and snapshot layer 422DSL digital subscriber line 423DSL domain specific language 424DSLAM digital subscriber line access multiplexer 425DSN delivery status notification 426DSO dynamic shared object 427DSP digital signal processor 428DSSS direct sequence spread spectrum 429DTD document type definition 430DTE data terminal equipment 431DTE dumb terminal emulator 432DTL diode-transistor logic 433DTLS datagram transport layer security 434DTS digital thermal sensor 435DUT device under test 436DVB digital video broadcasting 437DVCS distributed version control system 438DVD digital versatile disc 439DVFS dynamic voltage and frequency scaling 440DVI device independent 441DVI Digital Visual Interface 442DVR digital video recorder 443E-XER extended XML encoding rules 444EABI embedded-application binary interface 445EAI Email Address Internationalization 446EAI Enterprise Application Integration 447EAP Extensible Authentication Protocol 448EAPOL EAP over Lan 449EBCDIC Extended Binary Coded Decimal Interchange Code 450EBDA Extended BIOS Data Area 451EBNF extended backus-naur form 452EBR extended boot record 453EC elliptic curve 454ECC elliptic curve cryptography 455ECC error correction code 456ECDH elliptic curve Diffie-Hellman 457ECDL elliptic curve discrete logarithm 458ECDLP elliptic curve discrete logarithm problem 459ECDSA elliptic curve digital signature algorithm 460ECL emitter-coupled logic 461ECN explicit congestion notification 462ECP enhanced capability port 463ECS enhanced chip set 464ECS extended configuration space 465EDAC error detection and correction 466EDAT enhanced dynamic acceleration technology 467EdDSA Edwards curve digital signature algorithm 468EDGE explicit data graph execution 469EDID extended display identification data 470EDO extended data out 471EDS electronical data sheet 472EEE energy efficient ethernet 473EEPROM electrically erasable programmable read only memory 474EFI extensible firmware interface 475EFL emitter follower logic 476EFM eight to fourteen modulation 477EFS extent file system 478EGA Enhanced Graphics Adapter 479EGP exterior gateway protocol 480EH extension header 481EIDE enhanced IDE 482EISA extended industry standard architecture 483EINJ error injection table 484ELF executable and linking format 485ELS entry level system 486EMI electro-magnetic interference 487EMP electro-magnetic pulse 488EMR electro-magnetic radiation 489EMACS Editor MACroS 490EOF end of file 491EOI end of interrupt 492EOIS end of interactive support 493EOL end of life 494EOL end of line 495EOT end of transmission 496EPIC explicitly parallel instruction computing 497EPP enhanced parallel port 498EPRML extended partial response, maximum likelihood 499EPROM erasable programmable read only memory 500ERC error recovery control 501ERD emergency recovery disk 502ERD entity relationship diagram 503ERE extended regular expression 504ERST error record serialization table 505ESAN Efficiency Sanitizer 506ESB enterprise service bus 507ESDI enhanced small disk interface 508ESDRAM enhanced synchronous dynamic random access memory 509ESI enclosure services interface 510ESS electronic switching system 511ESS extended service set 512ESSID extended service set identifier 513EST enhanced speedstep 514ETL extract, transform, load 515EU execution unit 516EULA end user license agreement 517FAT file allocation table 518FBRAM frame buffer random access memory 519FCIF full common intermediate format 520FCL fiber channel loop 521FCS frame check sequence 522FDC floppy disk controller 523FDD floppy disk drive 524FDDI fiber distributed data interface 525FDE full disk encryption 526FDT flattened device tree 527FEA finite element analysis 528FEC forward error correction 529FET field-effect transistor 530FF finite field 531FF form feed 532FFDH finite-field Diffie-Hellman 533FFH functional fixed hardware 534FFI foreign function interface 535FFM focus follows mouse 536FFS Fast File System 537FFS find first set 538FFT fast Fourier transform 539FG floating gate 540FHSS frequency hop spread spectrum 541FID frequency identifier 542FIFO first in, first out 543FILO first in, last out 544FIPS Federal Information Processing Standards 545FIR fast infrared 546FLOPS floating [point] operations per second 547FLOSS free/libre/open source software 548FM frequency modulation 549FMR false match rate 550FOSS free/open source software 551FPGA field programmable gate array 552FPM fast page mode 553FPR floating point register 554FPU floating point unit 555FQDN fully qualified domain name 556FRR false rejection rate 557FRU field replaceable unit 558FS file system 559FSB front side bus 560FSCK file system check 561FSF Free Software Foundation 562FSK frequency shift keying 563FSM finite-state machine 564FTA fault tree analysis 565FTL flash translation layer 566FTP File Transfer Protocol 567FTPS File Transfer Protocol Secure 568FUS fast user switching 569FWH firmware hub 570FWS folding white space 571GAL generic array logic 572GAS generic address structure 573GC garbage collector 574GCM Galois counter mode 575GCR group-coded recording 576GDI Graphics Device Interface 577GDT global descriptor table 578GEM graphics environment manager 579GEM graphics execution manager 580GENA general event notification architecture 581GHC Glasgow Haskell compiler 582GHES generic hardware error source 583GIC generic interrupt controller 584GID group identifier 585GIF graphics interchange format 586GMCH graphics and memory controller hub 587GNU GNU's Not Unix 588GOP graphics output protocol 589GOT global offset table 590GPE general purpose event 591GPF general protection fault 592GPG GNU Privacy Guard 593GPL [GNU] General Public License 594GPR general purpose register 595GPS generalized processor sharing 596GPT GUID partition table 597GPU graphics processing unit 598GR golden ratio 599GRE generic routing encapsulation 600GSI global system interrupt 601GUI graphical user interface 602GUID globally unique identifier 603GVFS git virtual file system 604HA high availability 605HAL hardware abstraction layer 606HAT hashed array tree 607HATEOAS hypermedia as the engine of application state 608HBA host bus adapter 609HCF halt and catch fire 610HCI host controller interface 611HCI human-computer interaction 612HCL hardware compatibility list 613HDCP High-bandwidth Digital Content Protection 614HDD hard disk drive 615HDL hardware description language 616HDMI High-Definition Multimedia Interface 617HDTV high-definition television 618HECI host embedded controller interface 619HEST hardware error source table 620HF high frequency 621HFM highest frequency mode 622HFS hierarchical file system 623HID human interface device 624HKP HTTP Keyserver Protocol 625HLL high-level language 626HMA high memory area 627HMI human-machine interface 628HOOD hierarchical object oriented design 629HP Hewlett-Packard 630HPC high performance computing 631HPET high precision event timer 632HSM hardware security module 633HSM hierarchical storage management 634HT hyper-threading 635HTC hardware thermal control 636HTCC high temperature co-fired ceramic 637HTML HyperText Markup Language 638HTT hyper-threading technology 639HTTP Hypertext Transfer Protocol 640HTTPS Hypertext Transfer Protocol Secure 641HVM hardware virtual machine 642HVDS High-Voltage Differential Signaling 643HWASAN Hardware-assisted Address Sanitizer 644HZ Hertz 645I2O intelligent input/output 646IA information assurance 647IAAS infrastructure as a service 648IANA Internet Assigned Numbers Authority 649IBC iterated block cipher 650IBM International Business Machines 651IBS instruction based sampling 652IBSS independent basic service set 653IC integrated circuit 654ICA independent computer architecture 655ICB Internet Citizen's Band 656ICE in-circuit emulator 657ICE internal compiler error 658ICH I/O controller hub 659ICMP Internet Control Message Protocol 660ICT information and communications technology 661ICW initialization command word 662IDA Intel dynamic acceleration 663IDCMP Intuition direct communication message port 664IDE integrated development environment 665IDE integrated drive electronics 666IDPS intrusion detection [and] prevention system 667IDRP inter-domain routing protocol 668IDS intrusion detection system 669IDT interrupt descriptor table 670IE Internet Explorer 671IEC International Electrotechnical Commission 672IEEE Institute of Electrical and Electronics Engineers 673IESG Internet Engineering Steering Group 674IETF Internet Engineering Task Force 675IF intermediate frequency 676IFCM isochronous flow control mode 677IFF Interchange File Format 678IFS internal field separator 679IGD Internet gateway device 680IGMP Internet Group Management Protocol 681IGP interior gateway protocol 682IHV independent hardware vendor 683IKE Internet key exchange 684ILM internal loopback mode 685ILOM integrated lights-out management 686ILP instruction level parallelism 687IM instant messaging 688IMAP Internet Message Access Protocol 689IMC integrated memory controller 690IMCR interrupt mode configuration register 691IMR interrupt mask register 692IMS information management system 693IMSI international mobile subscriber identity 694INCITS InterNational Committee for Information Technology Standards 695IO input/output 696IOCTL input/output control 697IOM input/output managers 698IOMMU input/output memory management unit 699IOT Internet of Things 700IP Internet Protocol 701IP intellectual property 702IPC instructions per cycle 703IPC interprocess communication 704IPCF interprocess communication facility 705IPE integrated programming environment 706IPI intelligent peripheral interface 707IPI interprocessor interrupt 708IPL Initial Program Load 709IPL Interrupt Priority Level 710IPMB Intelligent Platform Management Bus 711IPMI Intelligent Platform Management Interface 712IPNG Internet Protocol, Next Generation 713IPS in-plane switching 714IPS intrusion prevention system 715IPSEC Internet Protocol Security 716IRC Internet Relay Chat 717IRDA infrared data association 718IRQ interrupt request 719IRQL interrupt request level 720IRR interrupt request register 721IRTF Internet Research Task Force 722IS information system 723ISA industry standard architecture 724ISA instruction set architecture 725ISDN integrated services digital network 726ISI inter-symbol interference 727ISL initial system load 728ISM industrial, scientific, [and] medical 729ISN initial serial number 730ISO International Standards Organization 731ISOC Internet Society 732ISP Internet service provider 733ISR in-service register 734ISR interrupt service routine 735IST interrupt stack table 736ISV independent software vendor 737IT information technology 738ITB Intel Turbo Boost 739ITIL information technology infrastructure library 740ITP in-target probe 741ITSM IT service management 742IV initialization vector 743IVT interrupt vector table 744JBOD just a bunch of disks 745JCL Job Control Language 746JFET junction [gate] field-effect transistor 747JIT just in time 748JPEG Joint Photographic Experts Group 749JRE Java Runtime Environment 750JSON JavaScript Object Notation 751JTAG joint test action group 752KASLR kernel address space layout randomization 753KB keyboard 754KB kilobyte 755KBD keyboard 756KBD kilobaud 757KCS keyboard controller style 758KLOC thousand lines of code 759KMS kernel-mode setting 760KPI kernel programming interface 761KVA kernel virtual address 762KVM kernel virtual machine 763KVM kernel virtual memory 764KVM keyboard, video, [and] mouse 765L2CAP link layer control and adaptation protocol 766LAMP Linux Apache MySQL {Perl,PHP,Python} 767LAN local area network 768LAPIC local advanced programmable interrupt controller 769LAR load access rights 770LBA logical block addressing 771LBNF labeled backus-naur form 772LBS location-based service 773LCD liquid crystal display 774LCP link control protocol 775LDA local delivery agent 776LDAP Lightweight Directory Access Protocol 777LDR light-dependent resistor 778LDT local descriptor table 779LE logical extent 780LED light emitting diode 781LELL low energy link layer 782LER label edge router 783LF line feed 784LF low frequency 785LFM lowest frequency mode 786LFN long file names 787LFO low-frequency oscillation 788LFS log-structured file system 789LFU least frequently used 790LHP loop heat pipe 791LIF logical interchange format 792LIFO last in, first out 793LILO LInux LOader 794LILO last in, last out 795LINT local interrupt 796LIR local Internet registry 797LISP LISt Processor 798LISP Locator/ID Separation Protocol 799LKM {Linux,loadable} kernel module 800LKML Linux kernel mailing list 801LL load linked 802LL/SC load linked/store conditional 803LLC logical link control 804LLD low-level design 805LLDD low-level design document 806LLDP link layer discovery protocol 807LLF low level format 808LLMNR link-local multicast name resolution 809LLVM Low Level Virtual Machine 810LM long mode 811LMI local management interface 812LMM link management mode 813LMP link management protocol 814LNO loop nest optimization 815LOC lines of code 816LOM lights-out management 817LPE Linux performance events 818LPC low pin count 819LPS local positioning system 820LRC longitudinal redundancy check 821LRM left-to-right mark 822LRO left-to-right override 823LRU least recently used 824LSAN Leak Sanitizer 825LSB Linux standards base 826LSB least significant {bit,byte} 827LSI large scale integration 828LSL load segment limit 829LSM log structured merge 830LSN Large Scale NAT 831LSN log sequence number 832LSR label switch router 833LTCC low temperature co-fired ceramic 834LTO linear tape-open 835LTO link time optimization 836LTR left to right 837LTR load task register 838LTR letter(-sized paper) 839LTS long term support 840LUA Lua Uppercase Accident 841LUN logical unit number 842LV logical volume 843LVM logical volume management 844LVT local vector table 845LVDS Low-Voltage Differential Signaling 846LWP light-weight process 847LZSS Lempel Ziv Storer Szymanski 848LZW Lempel Ziv Welch 849MAC mandatory access control 850MAC {media,medium} access control 851MAC message authentication {check,code} 852MADT multiple APIC descriptor table 853MB megabyte 854MBA multi-boot agent 855MBR master boot record 856MBS megabits per second 857MC memory controller 858MCA machine check architecture 859MCA MicroChannel architecture 860MCC multiversion concurrency control 861MCE machine check exception 862MCGA Multi-Color Graphics Array 863MCH memory controller hub 864MCM multi-chip module 865MCQ memory controlled queue 866MD machine-dependent 867MD-SAL model-driven service abstraction layer 868MDA mail delivery agent 869MDA Monochrome Display Adapter 870MDC Management Data Clock 871MDI Medium Dependent Interface 872MDI-X Medium Dependent Interface Crossover 873MDIO Management Data Input/Output 874MDMX MIPS Digital Media eXtension 875MDRAM multibank dynamic random access memory 876MESI modified, exclusive, shared, invalid 877MFC merge from current 878MFC Microsoft Foundation Classes 879MFM modified frequency modulation 880MFU most frequently used 881MGCP media gateway control protocol 882MI machine-independent 883MI machine interface 884MIB management information base 885MIC message integrity {check,code} 886MID mobile Internet device 887MIDI musical instrument digital interface 888MIF management information format 889MII media independent interface 890MIM man in the middle 891MIMD multiple instruction, multiple data 892MIME Multipurpose Internet Mail Extensions 893MIMO multiple input multiple output 894MIPS million instructions per second 895MIPS Microprocessor without Interlocked Pipeline Stages 896MISD multiple instruction, single data 897MIT Massachusetts Institute of Technology 898MITM man in the middle 899ML machine language 900ML machine learning 901ML mailing list 902ML markup language 903ML maximum likelihood 904MLC multi-level cell 905MLD multicast listener discovery 906MLHP micro loop heat pipe 907MMF multi-mode fiber 908MMIC monolithic microwave integrated circuit 909MMIO memory mapped input/output 910MMORPG massive multiplayer online role playing game 911MMU memory management unit 912MMX matrix math extension 913MMX multimedia extension 914MMX multiple math extension 915MO magneto-optical 916MOESI modified, owned, exclusive, shared, invalid 917MOF maximum operating frequency 918MOSFET metal-oxide-semiconductor field-effect transistor 919MOSI modified, owned, shared, invalid 920MP multi-platform 921MP multiplayer 922MP {multiprocessing,multiprocessor} 923MPEG moving picture experts group 924MPI message passing interface 925MPLS Multiprotocol Label Switching 926MPP massively parallel processor 927MPS memory pool system 928MPS multiprocessor specification 929MQTT Message Queuing Telemetry Transport 930MR modem ready 931MRU most recently used 932MS Microsoft 933MSAN Memory Sanitizer 934MSB most significant {bit,byte} 935MSC message sequence chart 936MSE mean square error 937MSF minutes seconds frames 938MSI message signaled interrupt 939MSI modified, shared, invalid 940MSR {machine state,model-specific} register 941MSS maximum segment size 942MSTP Multiple Spanning Tree Protocol 943MT machine translation 944MTA mail transfer agent 945MTBF mean time between failures 946MTP media transfer protocol 947MTRR memory type range register 948MTTF mean time to failure 949MTU maximum transmission unit 950MUA mail user agent 951MUD multi-user domain 952MVCC multiversion concurrency control 953MWE module width encoding 954MX mail exchange 955NACK negative acknowledgement 956NAK negative acknowledgement 957NAN not a number 958NAPT Network Address Port Translation 959NAS network attached storage 960NAT network address translation 961NAV network allocation vector 962NC numerical control 963NC-SI network controller sideband interface 964NCO numerically-controlled oscillator 965NCP Network Control Protocol 966NCSI network connectivity status indicator 967NCQ native command queuing 968ND neighbor discovery 969NDFA nondeterministic finite automaton 970NE numeric error 971NEWS Network extensible Window System 972NFA nondeterministic finite automaton 973NFC near-field communication 974NFCI no functional change intended 975NFS network file system 976NFV network function virtualization 977NIA next instruction address 978NIC network information center 979NIC network interface card 980NIDS network intrusion detection system 981NIP network interface protocol 982NIPS network intrusion prevention system 983NIS network information service 984NIST National Institute of Standards and Technology 985NLS native language support 986NMI non-maskable interrupt 987NNTP Network News Transfer Protocol 988NOC network operations center 989NOP no operation 990NOS network operating system 991NP nondeterministic polynomial time 992NRND not recommended for new designs 993NRZ non-return to zero 994NSA nation-state adversary 995NSA no such agency 996NSA National Security Agency 997NTM non-deterministic Turing machine 998NTP Network Time Protocol 999NUMA non-uniform memory access 1000NVMM NetBSD Virtual Machine Monitor 1001NVMM non-volatile main memory 1002NVRAM non-volatile random access memory 1003NW not write-through 1004NX no execute 1005OAEP optimal asymmetric encryption padding 1006OAM operations, administration, and {management,maintenance} 1007OBO off by one 1008OBOE off by one error 1009OCL object constraint language 1010OCR optical character recognition 1011ODE offline device environment 1012ODM object data manager 1013ODCM on-demand clock modulation 1014ODT on-die termination 1015OEM original equipment manufacturer 1016OFB output feedback 1017OFDM orthogonal frequency division multiplexing 1018OFET organic field-effect transistor 1019OLAP online analytical processing 1020OLE object linking and embedding 1021OLTP online transaction processing 1022ONFI open nand flash interface 1023OO OpenOffice 1024OO object oriented 1025OOB out of band 1026OOE out of order execution 1027OOM out of memory 1028OOO OpenOffice.org 1029OOP object oriented programming 1030OOPS object oriented programming systems 1031OOSE object oriented software engineering 1032OPM operations per minute 1033OPS operations per second 1034OQL Object Query Language 1035ORB object request broker 1036ORM object-relational mapping 1037OS operating system 1038OSD open source definition 1039OSF open software foundation 1040OSI Open Source Initiative 1041OSI open systems interconnection 1042OSPF open shortest path first 1043OSPM OS power management 1044OSS open sound system 1045OSS open source software 1046OSVW operating system visible workarounds 1047OTP one time password 1048OTP open telecom platform 1049OU organizational unit 1050OUI organizationally unique identifier 1051OWL Web Ontology Language 1052P2P PCI to PCI 1053P2P peer to peer 1054PA phase accumulator 1055PA physical address 1056PAAS platform as a service 1057PAC phase-amplitude converter 1058PAE physical address extension 1059PAL phase alternating line 1060PAL programmable array logic 1061PAM pluggable authentication modules 1062PAM pulse amplitude modulation 1063PAP password authentication protocol 1064PAT page attribute table 1065PAT port address translation 1066PATA parallel ATA 1067PAX portable archive exchange 1068PBE pending break encoding 1069PBE programming by example 1070PC personal computer 1071PC program counter 1072PCB printed circuit board 1073PCB process control block 1074PCB Protocol Control Block 1075PCC Portable C Compiler 1076PCD page-level cache disable 1077PCE path computation element 1078PCE performance-monitor counter enable 1079PCEP Path Computation Element Protocol 1080PCH platform controller hub 1081PCI peripheral component interconnect 1082PCM phase change memory 1083PCM pulse code modulation 1084PCMCIA Personal Computer Memory Card International Association 1085PCP Port Control Protocol 1086PD public domain 1087PDA personal digital assistant 1088PDA pushdown automaton 1089PDAG propositional directed acyclic graph 1090PDB power distribution board 1091PDF portable document format 1092PDM pulse-duration modulation 1093PDN pull-down network 1094PDP page {descriptor,directory} page 1095PDS product data sheet 1096PDU protocol data unit 1097PE protection enable 1098PE provider edge 1099PEAP Protected EAP 1100PECI platform environment control interface 1101PEP protocol extension protocol 1102PER packed encoding rules 1103PFS perfect forward secrecy 1104PGAS partitioned global address space 1105PGE page global enable 1106PGP Pretty Good Privacy 1107PHB PCI host bridge 1108PHP PHP: Hypertext Preprocessor 1109PIC performance instrumentation counters 1110PIC position independent code 1111PIC programmable interrupt controller 1112PICNIC problem in chair, not in computer 1113PID process id 1114PIE position independent executable 1115PIL Priority Interrupt Level 1116PIM personal information manager 1117PIM platform-independent model 1118PIO programmed input/output 1119PIPT physically indexed, physically tagged 1120PIQ prefetch input queue 1121PIT programmable interrupt timer 1122PIV personal identity verification 1123PIX Private Internet eXchange 1124PKCS public-key cryptography standards 1125PKI public key infrastructure 1126PLC programmable logic controller 1127PLD programmable logic device 1128PLL phase locked loop 1129PLRU pseudo LRU 1130PLTM package level thermal management 1131PM power management 1132PM {phase,pulse} modulation 1133PMC performance monitoring counters 1134PME power management event 1135PMEG page map entry group 1136PMI performance monitoring infrastructure 1137PMI platform management interrupt 1138PMIC power management integrated circut 1139PMIO port-mapped input/output 1140PMT photo-multiplier tube 1141PMU performance monitoring units 1142PMU power management unit 1143PNG portable network graphics 1144PNP plug and play 1145POE power over ethernet 1146POF probability of failure 1147POP Post Office Protocol 1148POP power on password 1149POSIX Portable Operating System Interface [for Unix] 1150POST power on self test 1151POTS plain old telephone system 1152POWER Performance Optimization With Enhanced RISC 1153POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1154PP pair programming 1155PPB PCI [to] PCI bridge 1156PPC PowerPC 1157PPC Power Performance Computing 1158PPI pixels per inch 1159PPM pages per minute 1160PPP Point-to-Point Protocol 1161PPPOA Point-to-Point Protocol over ATM 1162PPPOE Point-to-Point Protocol over Ethernet 1163PPU physics processing unit 1164PRAM Parameter RAM 1165PRBS pseudorandom bit sequence 1166PRG pseudorandom generator 1167PRF pseudorandom function [family] 1168PRML partial response, maximum likelihood 1169PRN pseudorandom {noise,number} 1170PRNG pseudorandom number generator 1171PROM programmable read only memory 1172PRP pseudorandom permutation 1173PRU Programmable Realtime Unit 1174PS PostScript 1175PSD power spectral density 1176PSE page size extensions 1177PSK phase shift keying 1178PSK pre-shared key 1179PSTN public switched telephone network 1180PSW program status word 1181PTE page table entry 1182PTLA pseudo top level aggregator 1183PTP page table page 1184PTV perceived target value 1185PU processing unit 1186PUC personal unblocking code 1187PUN physical unit number 1188PV physical volume 1189PVC permanent virtual circuit 1190PVG physical volume group 1191PVI protected-mode virtual interrupt 1192PVST Per-VLAN Spanning Tree 1193PWM pulse width modulation 1194PXE preboot execution environment 1195QA quality assurance 1196QAM quadrature amplitude modulation 1197QAM quality assurance management 1198QBE query by example 1199QC quality control 1200QDI quasi delay insensitive 1201QCIF quarter common intermediate format 1202QOS quality of service 1203QVL qualified vendor list 1204R/O read only 1205R/W read/write 1206RA receiver address 1207RA remote assistance 1208RA resource affinity 1209RA router advertisement 1210RAD rapid application development 1211RAID redundant array of {independent,inexpensive} disks 1212RAM random access memory 1213RAS reliability, availability and serviceability 1214RAS remote access service 1215RAS restartable atomic sequence 1216RAS row address strobe 1217RBF radial basis function 1218RBNF routing backus-naur form 1219RBT red-black tree 1220RC release candidate 1221RC remote control 1222RC run commands 1223RCS Revision Control System 1224RCS revision control system 1225RCU read, copy, update 1226RDB Rigid Disk Block 1227RDBMS relational database management system 1228RDF Resource Description Framework 1229RDM relational data model 1230RDMA remote direct memory access 1231RDRAM Rambus DRAM 1232RE regular expression 1233REST representational state transfer 1234RF radio frequency 1235RFI radio frequency interference 1236RFO request for ownership 1237RFU reserved for future use 1238RGB red green blue 1239RGBA red green blue alpha 1240RGMII reduced gigabit media independent interface 1241RH read hit 1242RHEL Red Hat Enterprise Linux 1243RHL Red Hat Linux 1244RIB routing information base 1245RIFF Resource Interchange File Format 1246RIP Raster Image Processor 1247RIP Routing Information Protocol 1248RIR regional Internet registry 1249RISC reduced instruction set {computer,computing} 1250RKM ROM Kernel Manual 1251RLE run length encoding 1252RLL run length limited 1253RLO right-to-left override 1254RM read miss 1255RMCP Remote Management Control Protocol 1256RMI remote method invocation 1257RMO Relaxed Memory Ordering 1258RMPM rapid memory power management 1259RMS root mean square 1260RMW read, modify, write 1261RNG random number generator 1262ROM read only memory 1263RPC remote procedure call 1264RPKI resource PKI 1265RPL requested privilege level 1266RPM revolutions per minute 1267RPN reverse Polish notation 1268RPVST Rapid Per-VLAN Spanning Tree 1269RR random replacement 1270RR round robin 1271RS relay station 1272RSA Rivest, Shamir, [and] Adleman 1273RSIP Realm Specific IP 1274RSN Robust Secure Network 1275RSS really simple syndication 1276RSS residual sum of squares 1277RSTP Rapid Spanning Tree Protocol 1278RT real time 1279RTC real time clock 1280RTC real time computing 1281RTF rich text format 1282RTL register transfer language 1283RTL resistor-transistor logic 1284RTL right to left 1285RTOS real time operating system 1286RTS request to send 1287RTT round trip time 1288RUP rational unified process 1289RW Rabin-Williams 1290RWM read-write memory 1291RX {receive,receiver} 1292S/PDIF Sony/Philips Digital Interface Format 1293SA security advisory 1294SA security association 1295SA source address 1296SA structured analysis 1297SAAS software as a service 1298SACD super audio compact disc 1299SAD security association database 1300SAL {service,system} abstraction layer 1301SAM serial access memory 1302SAM sum addressed memory 1303SAML security assertion markup language 1304SAN storage area network 1305SAP service access point 1306SAPIC streamlined advanced programmable interrupt controller 1307SASD structured analysis, structured design 1308SASI Shugart Associates System Interface 1309SASL simple authentication [and] security layer 1310SATA serial advanced technology attachment 1311SAX simple API for XML 1312SB sound blaster 1313SBU standard build unit 1314SC store conditional 1315SCA source code analyzer 1316SCADA supervisory control and data acquisition 1317SCC single chip cloud 1318SCC source code control 1319SCCS Source Code Control System 1320SCI scalable coherent interface 1321SCI system control interrupt 1322SCM software configuration management 1323SCM source code management 1324SCM storage-class memory 1325SCO synchronous connection orientated 1326SCP secure copy 1327SCSI Small Computer System Interface 1328SCTP Stream Control Transmission Protocol 1329SDEI software delegated exception interface 1330SDI symbol deinterleave 1331SDK software development kit 1332SDL Simple Declarative Language 1333SDL Simple Direct-media Layer 1334SDLC {software,system,systems} development life cycle 1335SDN software defined networking 1336SDP Session Description Protocol 1337SDRAM synchronous dynamic random access memory 1338SDS software defined storage 1339SDT syntax-directed translation 1340SEA synchronous external abort 1341SEGV segmentation violation 1342SED self-encrypting drive 1343SED stream editor 1344SEO search engine optimization 1345SES SCSI enclosure services 1346SFC sequential function chart 1347SFI simple firmware interface 1348SFI software fault isolation 1349SFTP SSH File Transfer Protocol 1350SFTP Serial File Transfer Protocol 1351SFTP Simple File Transfer Protocol 1352SGMII serial gigabit media independent interface 1353SGRAM synchronous graphics random access memory 1354SHA secure hash algorithm 1355SIDH supersingular isogeny Diffie-Hellman 1356SIEM security information and event management 1357SIF source input format 1358SIFS short inter-frame space 1359SIM subscriber identity module 1360SIMD single instruction, multiple data 1361SIMM single inline memory module 1362SIP Session Initiation Protocol 1363SIR signal-to-interference ratio 1364SIR slow infrared 1365SISD single instruction, single data 1366SLAAC stateless address auto-configuration 1367SLC single-level cell 1368SLDRAM synchronous-link dynamic random access memory 1369SLED single large expensive disk 1370SLI scalable link interface 1371SLI scan-line interleave 1372SLIC system license internal code 1373SLOC source lines of code 1374SLRU segmented LRU 1375SMA smart memory access 1376SMAF system management action field 1377SMAP Simple Mail Access Protocol 1378SMAP supervisor mode access prevention 1379SMART self-monitoring analysis and reporting technology 1380SMB Server Message Block 1381SMB system management bus 1382SMBIOS System Management BIOS 1383SMC system management controller 1384SMD storage module device 1385SMEP supervisor mode execution protection 1386SMF single mode fiber 1387SMI structure of management information 1388SMI system management interrupt 1389SMM system management mode 1390SMP serial management protocol 1391SMP symmetric multiprocessing 1392SMT simultaneous multithreading 1393SMTP Simple Mail Transfer Protocol 1394SMU system management unit 1395SNA systems network architecture 1396SNAP Sub-Network Access Protocol 1397SNIA Storage Networking Industry Association 1398SNMP Simple Network Management Protocol 1399SNR signal-to-noise ratio 1400SOA service oriented architecture 1401SOAP Simple Object Access Protocol 1402SOC system on chip 1403SOF start of frame 1404SOH start of header 1405SOHO small office/home office 1406SOL serial over LAN 1407SOM system on module 1408SP service pack 1409SP stack pointer 1410SPA storage pool allocator 1411SPARC scalable processor architecture 1412SPARQL SPARQL Protocol and RDF Query Language 1413SPD security policy database 1414SPD serial presence detect 1415SPDIF Sony/Philips digital interface format 1416SPI serial peripheral interface 1417SPI stateful packet inspection 1418SPL system interrupt priority level 1419SPL spinlock 1420SPMD single process, multiple data 1421SPR special purpose register 1422SPT sectors per track 1423SQA software quality assurance 1424SQCIF sub quarter common intermediate format 1425SQL Structured Query Language 1426SRAM static random access memory 1427SRC sample rate conversion 1428SRP SCSI RDMA protocol 1429SS self-snoop 1430SS stack segment 1431SSA static single assignment 1432SSAP source service access point 1433SSB single-sideband modulation 1434SSD solid state drive 1435SSE streaming SIMD extensions 1436SSFDC solid state floppy disc card 1437SSH secure shell 1438SSI server side includes 1439SSID service set identifier 1440SSL secure sockets layer 1441SSP stack smashing protection 1442STC software thermal control 1443STD state transition diagram 1444STOMP Streaming Text Oriented Messaging Protocol 1445STP Spanning Tree Protocol 1446STP shielded twisted pair 1447SUN Stanford University Network 1448SUS Single Unix Specification 1449SUT system under test 1450SVC switched virtual circuit 1451SVG scalable vector graphics 1452SVGA Super Video Graphics Array 1453SVI {switch,switched} virtual interface 1454SVM secure virtual machine 1455SVM support vector machine 1456SVR System V Release 1457SVS Separate Virtual Space 1458SWF Shockwave Flash 1459SWIG simplified wrapper [and] interface generator 1460SYR symbol timing recovery 1461TA test assertion 1462TA transmitter address 1463TAI international atomic time 1464TAO track at once 1465TAOCP The Art of Computer Programming 1466TAP Test Anything Protocol 1467TAS test and set 1468TB terabyte 1469TBNF transitional backus-naur form 1470TCB trace capture buffer 1471TCB trusted computing base 1472TCC thermal control circuit 1473TCL tool command language 1474TCP Transmission Control Protocol 1475TCQ tagged command queueing 1476TDC time [to] digital converter 1477TDD test-driven development 1478TDD time division duplex 1479TDM time division multiplexing 1480TDMA time division multiple access 1481TDOA time difference of arrival 1482TDP thermal design {point,power} 1483TECO Text Editor and Corrector 1484TFT thin film transistor 1485TFTP Trivial File Transfer Protocol 1486TIAS try it and see 1487TIFF tagged image file format 1488TITS try it to see 1489TK temporal key 1490TKIP Temporal Key Integrity Protocol 1491TLA top level aggregator 1492TLB translation lookaside buffer 1493TLD top level domain 1494TLER time-limited error recovery 1495TLI transport layer interface 1496TLS thread local storage 1497TLS transport layer security 1498TM Turing machine 1499TM thermal monitor 1500TMG transmogrifier 1501TMDS transition minimized differential signaling 1502TMO timeout 1503TOD time of day 1504TOS terms of service 1505TOS trusted operating system 1506TOS type of service 1507TP transaction processing 1508TPI tracks per inch 1509TPM transactions per minute 1510TPM trusted platform module 1511TPR task priority register 1512TPS transactions per second 1513TPS transmission parameters signaling 1514TR task register 1515TR token ring 1516TRL timing recovery loop 1517TRNG true random number generator 1518TS terminal services 1519TS time series 1520TS time stamp 1521TS transport stream 1522TSAN Thread Sanitizer 1523TSC time stamp counter 1524TSD time stamp disable 1525TSDB time series database 1526TSL test, set, lock 1527TSO time sharing option 1528TSO Total Store Ordering 1529TSP Time-Stamp Protocol 1530TSP Tunnel Setup Protocol 1531TSP time synchronization protocol 1532TSP traveling salesman problem 1533TSS task state segment 1534TTL time to live 1535TTL transistor-transistor logic 1536TTM translation table maps 1537TTY teletype 1538TUI {terminal,text-based,textual} user interface 1539TX {transmit out,transmitter} 1540TXG transaction group 1541TZ time zone 1542UAC user {access,account} control 1543UAF use-after-free 1544UART universal asynchronous receiver/transmitter 1545UAT user acceptance testing 1546UB undefined behavior 1547UBSAN Undefined Behavior Sanitizer 1548UC uncacheable 1549UCS uniform-cost search 1550UCS unified computing system 1551UCS universal coded character set 1552UDMA ultra DMA 1553UDO ultra density optical 1554UDP User Datagram Protocol 1555UEFI unified extensible firmware interface 1556UFS Unix File System 1557UGA universal graphics adapter 1558UI unit interval 1559UI user interface 1560UICC universal integrated circuit card 1561UID unique identifier 1562UID user identifier 1563UL upload 1564UMA uniform memory access 1565UMA upper memory area 1566UMB upper memory block 1567UML unified modeling language 1568UMPC ultra-mobile PC 1569UPNP universal plug and play 1570UPS uninterruptible power supply 1571URI uniform resource identifier 1572URL uniform resource locator 1573URN uniform resource name 1574USART universal synchronous/asynchronous receiver/transmitter 1575USB universal serial bus 1576USWC uncacheable speculative write combining 1577UT unit test 1578UTC coordinated universal time 1579UTF unicode transformation formats 1580UTP unshielded twisted pair 1581UUCP Unix-to-Unix Copy Protocol 1582UUID universally unique identifier 1583UUOC useless use of cat 1584UUT unit under test 1585UX user experience 1586VA vertical alignment 1587VA virtual address 1588VA volt-ampere 1589VAX virtual address extension 1590VB Visual Basic 1591VCA variable-gain amplifier 1592VCC common collector voltage 1593VCF voltage-controlled filter 1594VCM virtual channel memory 1595VCO voltage-controlled oscillator 1596VCS version control system 1597VESA Video Electronics Standards Association 1598VFO variable-frequency oscillator 1599VFS virtual file system 1600VG volume group 1601VGA Video Graphics Array 1602VHDCI very high density cable interconnect 1603VID {VLAN,voltage level} identifier 1604VIM Vi IMproved 1605VIPT virtually indexed, physically tagged 1606VIVT virtually indexed, virtually tagged 1607VLAN virtual local area network 1608VLIW very long instruction word 1609VLSI very large scale integration 1610VLSM variable length subnet mask 1611VM virtual {machine,memory} 1612VME virtual mode extension 1613VMX vector multimedia extensions 1614VMX virtual machine extensions 1615VOD video on demand 1616VPD vital product data 1617VPN virtual private network 1618VPWS virtual private wire service 1619VR virtual reality 1620VRAM video random access memory 1621VRF virtual routing and forwarding 1622VRM voltage regulator module 1623VRRP Virtual Router Redundancy Protocol 1624VSTP VLAN Spanning Tree Protocol 1625VTP VLAN Trunking Protocol 1626VXFS Veritas file sytem 1627VXVM Veritas volume manager 1628W watt 1629W3C World Wide Web Consortium 1630WAFL write anywhere file layout 1631WAMP Web Application Messaging Protocol 1632WAN wide area network 1633WAP Wireless Application Protocol 1634WAP wireless access point 1635WDM Windows Driver Model 1636WDDM Windows Display Driver Model 1637WDT watchdog timer 1638WEP Wired Equivalent Privacy 1639WFI wait for interrupt 1640WFQ weighted fair queuing 1641WH write hit 1642WIFI wireless fidelity 1643WLAN wireless local area network 1644WM write miss 1645WMI Windows Management Instrumentation 1646WOL Wake-on-LAN 1647WOM Wake-on-Modem 1648WOR Wake-on-Ring 1649WORM write once read many 1650WP WordPerfect 1651WP word processor 1652WP write protect 1653WPA Wi-Fi Protected Access 1654WPA2 Wi-Fi Protected Access II 1655WPS Wi-Fi Protected Setup 1656WRAM window random access memory 1657WS web services 1658WTC write through caching 1659WWAN wireless wide area network 1660WWW world wide web 1661WYSIAYG what you see is all you get 1662WYSIWYG what you see is what you get 1663XBAR crossbar 1664XDMCP X Display Manager control protocol 1665XER XML encoding rules 1666XGA Extended Graphics Array 1667XHR XMLHttpRequest 1668XIP execute in place 1669XML Extensible Markup Language 1670XNA XNA's not acronymed 1671XNS Xerox network systems 1672XOR exclusive or 1673XP extreme programming 1674XSI X/Open System Interface 1675XSL extensible stylesheet language 1676XSS cross site scripting 1677XT extended technology 1678XTI X/Open transport interface 1679XUL XML user interface language 1680YACC yet another compiler compiler 1681YAML YAML ain't markup language 1682YANG yet another next generation 1683YAWPFAPR you are welcome; please file a problem report 1684YP Yellow Pages 1685YTD year to date 1686ZAP ZFS attribute processor 1687ZBR zone bit recording 1688ZFOD zero-filled on demand 1689ZFS zettabyte file system 1690ZIF zero insertion force 1691ZIFS zero insertion force socket 1692ZIL ZFS intent log 1693ZMA zone multicast address 1694ZOI zero one infinity 1695ZOI zone of influence 1696ZPL ZFS Posix layer 1697ZVOL ZFS Volume 1698