acronyms.comp revision 1.249
1$NetBSD: acronyms.comp,v 1.249 2019/04/24 14:15:35 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 208CD cache disable 209CD compact disc 210CDDA compact disc digital audio 211CDL compiler description language 212CDMA code division multiple access 213CDP Cisco Discovery Protocol 214CDRAM cache dynamic random access memory 215CER canonical encoding rules 216CF compact flash 217CFB cipher feedback 218CFG context-free grammar 219CFG control-flow graph 220CFI control-flow integrity sanitizer 221CG control gate 222CGA Color Graphics Adapter 223CGI common gateway interface 224CGN Carrier-Grade NAT 225CHAP Challenge-Handshake Authentication Protocol 226CHS cylinder/head/sector 227CI continuous integration 228CI {common,component} interface 229CIDR Classless Inter-Domain Routing 230CIF common intermediate format 231CIFS Common Internet File System 232CIL common intermediate language 233CIR carrier-to-interference ratio 234CIS contact image sensor 235CISC complex instruction set {computer,computing} 236CJK Chinese, Japanese, [and] Korean 237CLF common log format 238CLI command line interface 239CLR common language runtime 240CLTT closed loop thermal throttling 241CLUT color look-up table 242CLV constant linear velocity 243CM configuration management 244CMA concert multithread architecture 245CMC chassis management controller 246CMC corrected machine check 247CMS {configuration,content,course} management system 248CMI control {management,method} interface 249CMOS complementary metal-oxide-semiconductor 250CMP chip multi-processing 251CMS content management system 252CMYK cyan magenta yellow black 253CN {common,canonical} name 254CNC computer numerical control 255CNR carrier-to-noise ratio 256COF current operating frequency 257COFDM coded orthogonal frequency division multiplexing 258COFF common object file format 259COM component object model 260COM computer on module 261COMA cache-only memory architecture 262CORBA common object request broker architecture 263COS class of service 264COW copy-on-write 265CP continuous pilot 266CPB core performance boost 267CPC central processor complex 268CPC cpu performance counters 269CPE common phase error 270CPE common platform enumeration 271CPER common platform error record 272CPG clock pulse generator 273CPI cycles per instruction 274CPL current privilege level 275CPLD complex programmable logic device 276CPP C preprocessor 277CPS characters per second 278CPT command pass through 279CPU central processing unit 280CR carriage return 281CRC cyclic redundancy check 282CRL carrier recovery loop 283CRLF carriage return line feed 284CRT cathode ray tube 285CRUD create, read, update, and delete 286CS cable select 287CS chip select 288CS code segment 289CS computer science 290CSDL {common,conceptual} schema definition language 291CSI channel state information 292CSI common system interface 293CSMA carrier sense multiple access 294CSMA/CA carrier sense multiple access with collision avoidance 295CSMA/CD carrier sense multiple access with collision detection 296CSR control [and] status registers 297CSRG Computer Systems Research Group 298CSS cascading style sheets 299CSV comma-separated values 300CTF compact c type format 301CTM close to metal 302CTR counter [mode] 303CTS clear to send 304CUA common user access 305CUT coordinated universal time 306CV control voltage 307CVE common vulnerabilities and exposures 308CVS Concurrent Versions System 309DA destination address 310DAA distributed application architecture 311DAB digital audio broadcasting 312DAC digital [to] analog converter 313DAC discretionary access control 314DAD duplicate address detection 315DANE DNS-based Authentication of Named Entities 316DAO disk at once 317DAP Directory Access Protocol 318DAT digital audio tape 319DAT dynamic acceleration technology 320DB database 321DBA database administrator 322DBA dynamic bandwidth allocation 323DBB data bus buffer 324DBC design by contract 325DBL dynamic buffer limiting 326DBMS database management system 327DBS database server 328DC direct current 329DCC Direct Client-to-Client 330DCC direct cable connect 331DCD data carrier detect 332DCE data control equipment 333DCE distributed computing environment 334DCIM data center infrastructure management 335DCIM digital camera images 336DCL Digital Command Language 337DCOM distributed component object model 338DCOP Desktop COmmunication Protocol 339DCS data collection systems 340DCT discrete cosine transform 341DCU data cache unit 342DDC display data channel 343DDE dynamic data exchange 344DDK device driver kit 345DDL data description language 346DDR double data rate 347DDS direct digital sound 348DDWG Digital Display Working Group 349DE debugging extensions 350DE desktop environment 351DEA data encryption algorithm 352DEC Digital Equipment Corporation 353DEK data encryption key 354DEP data execution prevention 355DER distinguished encoding rules 356DES Data Encryption Standard 357DF don't fragment 358DFA deterministic finite automaton 359DFC data flow control 360DFS depth first search 361DFS distributed file system 362DFSAN Data Flow Sanitizer 363DFT diagnostic function test 364DFT discrete Fourier transform 365DGL data generation language 366DH Diffie-Hellman 367DHCP Dynamic Host Configuration Protocol 368DIFS distributed inter-frame space 369DIMM dual inline memory module 370DIRT design in real time 371DL diode logic 372DL discrete logarithm 373DL download 374DLE data link escape 375DLL dynamic link library 376DLP discrete logarithm problem 377DMA direct memory access 378DMI desktop management interface 379DMS document management system 380DMT discrete multitone modulation 381DMU data management layer 382DNARD Digital network appliance reference design 383DND drag and drop 384DNLC directory name lookup cache 385DNS Domain Name System 386DNSSEC DNS Security Extensions 387DOE distributed object environment 388DOF data over fibre 389DOM document object model 390DOS denial of service 391DOS disk operating system 392DP DisplayPort 393DPC deferred procedure call 394DPCM differential pulse code modulation 395DPD dead peer detection 396DPI deep packet inspection 397DPI dots per inch 398DPL descriptor privilege level 399DPS Display PostScript 400DPST display power savings technology 401DRAAS disaster recovery as a service 402DRAM dynamic random access memory 403DRBG deterministic random bit generator 404DRI direct rendering infrastructure 405DRM digital rights management 406DRRS display refresh rate switching 407DS debug store 408DSA digital signature algorithm 409DSAP destination service access point 410DSB double-sideband modulation 411DSDT differentiated system descriptor table 412DSF device special file 413DSL dataset and snapshot layer 414DSL digital subscriber line 415DSL domain specific language 416DSLAM digital subscriber line access multiplexer 417DSN delivery status notification 418DSO dynamic shared object 419DSP digital signal processor 420DSSS direct sequence spread spectrum 421DTD document type definition 422DTE data terminal equipment 423DTE dumb terminal emulator 424DTL diode-transistor logic 425DTLS datagram transport layer security 426DTS digital thermal sensor 427DUT device under test 428DVB digital video broadcasting 429DVCS distributed version control system 430DVD digital versatile disc 431DVFS dynamic voltage and frequency scaling 432DVI device independent 433DVI Digital Visual Interface 434DVR digital video recorder 435E-XER extended XML encoding rules 436EABI embedded-application binary interface 437EAI Email Address Internationalization 438EAI Enterprise Application Integration 439EAP Extensible Authentication Protocol 440EAPOL EAP over Lan 441EBCDIC Extended Binary Coded Decimal Interchange Code 442EBDA Extended BIOS Data Area 443EBNF extended backus-naur form 444EBR extended boot record 445EC elliptic curve 446ECC elliptic curve cryptography 447ECC error correction code 448ECDH elliptic curve Diffie-Hellman 449ECDL elliptic curve discrete logarithm 450ECDLP elliptic curve discrete logarithm problem 451ECDSA elliptic curve digital signature algorithm 452ECL emitter-coupled logic 453ECN explicit congestion notification 454ECP enhanced capability port 455ECS enhanced chip set 456ECS extended configuration space 457EDAC error detection and correction 458EDAT enhanced dynamic acceleration technology 459EdDSA Edwards curve digital signature algorithm 460EDGE explicit data graph execution 461EDID extended display identification data 462EDO extended data out 463EDS electronical data sheet 464EEE energy efficient ethernet 465EEPROM electrically erasable programmable read only memory 466EFI extensible firmware interface 467EFL emitter follower logic 468EFM eight to fourteen modulation 469EGA Enhanced Graphics Adapter 470EGP exterior gateway protocol 471EH extension header 472EIDE enhanced IDE 473EISA extended industry standard architecture 474EINJ error injection table 475ELF executable and linking format 476ELS entry level system 477EMI electro-magnetic interference 478EMP electro-magnetic pulse 479EMR electro-magnetic radiation 480EMACS Editor MACroS 481EOF end of file 482EOI end of interrupt 483EOIS end of interactive support 484EOL end of life 485EOL end of line 486EOT end of transmission 487EPIC explicitly parallel instruction computing 488EPP enhanced parallel port 489EPRML extended partial response, maximum likelihood 490EPROM erasable programmable read only memory 491ERD emergency recovery disk 492ERD entity relationship diagram 493ERE extended regular expression 494ERST error record serialization table 495ESAN Efficiency Sanitizer 496ESB enterprise service bus 497ESDI enhanced small disk interface 498ESDRAM enhanced synchronous dynamic random access memory 499ESI enclosure services interface 500ESS electronic switching system 501ESS extended service set 502ESSID extended service set identifier 503EST enhanced speedstep 504ETL extract, transform, load 505EU execution unit 506EULA end user license agreement 507FAT file allocation table 508FBRAM frame buffer random access memory 509FCIF full common intermediate format 510FCL fiber channel loop 511FCS frame check sequence 512FDC floppy disk controller 513FDD floppy disk drive 514FDDI fiber distributed data interface 515FDE full disk encryption 516FDT flattened device tree 517FEA finite element analysis 518FEC forward error correction 519FET field-effect transistor 520FF finite field 521FF form feed 522FFDH finite-field Diffie-Hellman 523FFH functional fixed hardware 524FFI foreign function interface 525FFM focus follows mouse 526FFS Fast File System 527FFS find first set 528FFT fast Fourier transform 529FG floating gate 530FHSS frequency hop spread spectrum 531FID frequency identifier 532FIFO first in, first out 533FILO first in, last out 534FIPS Federal Information Processing Standards 535FIR fast infrared 536FLOPS floating [point] operations per second 537FLOSS free/libre/open source software 538FM frequency modulation 539FMR false match rate 540FOSS free/open source software 541FPGA field programmable gate array 542FPM fast page mode 543FPR floating point register 544FPU floating point unit 545FQDN fully qualified domain name 546FRR false rejection rate 547FRU field replaceable unit 548FS file system 549FSB front side bus 550FSCK file system check 551FSF Free Software Foundation 552FSK frequency shift keying 553FSM finite-state machine 554FTA fault tree analysis 555FTL flash translation layer 556FTP File Transfer Protocol 557FTPS File Transfer Protocol Secure 558FUS fast user switching 559FWH firmware hub 560FWS folding white space 561GAL generic array logic 562GAS generic address structure 563GC garbage collector 564GCM Galois counter mode 565GCR group-coded recording 566GDI Graphics Device Interface 567GDT global descriptor table 568GEM graphics environment manager 569GEM graphics execution manager 570GENA general event notification architecture 571GHC Glasgow Haskell compiler 572GHES generic hardware error source 573GIC generic interrupt controller 574GID group identifier 575GIF graphics interchange format 576GMCH graphics and memory controller hub 577GNU GNU's Not Unix 578GOP graphics output protocol 579GOT global offset table 580GPE general purpose event 581GPF general protection fault 582GPG GNU Privacy Guard 583GPL [GNU] General Public License 584GPR general purpose register 585GPS generalized processor sharing 586GPT GUID partition table 587GPU graphics processing unit 588GR golden ratio 589GRE generic routing encapsulation 590GSI global system interrupt 591GUI graphical user interface 592GUID globally unique identifier 593GVFS git virtual file system 594HA high availability 595HAL hardware abstraction layer 596HAT hashed array tree 597HATEOAS hypermedia as the engine of application state 598HBA host bus adapter 599HCF halt and catch fire 600HCI host controller interface 601HCI human-computer interaction 602HCL hardware compatibility list 603HDCP High-bandwidth Digital Content Protection 604HDD hard disk drive 605HDL hardware description language 606HDMI High-Definition Multimedia Interface 607HDTV high-definition television 608HECI host embedded controller interface 609HEST hardware error source table 610HF high frequency 611HFM highest frequency mode 612HFS hierarchical file system 613HID human interface device 614HKP HTTP Keyserver Protocol 615HLL high-level language 616HMA high memory area 617HMI human-machine interface 618HOOD hierarchical object oriented design 619HP Hewlett-Packard 620HPC high performance computing 621HPET high precision event timer 622HSM hardware security module 623HSM hierarchical storage management 624HT hyper-threading 625HTC hardware thermal control 626HTCC high temperature co-fired ceramic 627HTML HyperText Markup Language 628HTT hyper-threading technology 629HTTP Hypertext Transfer Protocol 630HTTPS Hypertext Transfer Protocol Secure 631HVM hardware virtual machine 632HVDS High-Voltage Differential Signaling 633HWASAN Hardware-assisted Address Sanitizer 634HZ Hertz 635I2O intelligent input/output 636IA information assurance 637IAAS infrastructure as a service 638IANA Internet Assigned Numbers Authority 639IBC iterated block cipher 640IBM International Business Machines 641IBS instruction based sampling 642IBSS independent basic service set 643IC integrated circuit 644ICA independent computer architecture 645ICB Internet Citizen's Band 646ICE in-circuit emulator 647ICE internal compiler error 648ICH I/O controller hub 649ICMP Internet Control Message Protocol 650ICT information and communications technology 651ICW initialization command word 652IDA Intel dynamic acceleration 653IDCMP Intuition direct communication message port 654IDE integrated development environment 655IDE integrated drive electronics 656IDPS intrusion detection [and] prevention system 657IDRP inter-domain routing protocol 658IDS intrusion detection system 659IDT interrupt descriptor table 660IE Internet Explorer 661IEC International Electrotechnical Commission 662IEEE Institute of Electrical and Electronics Engineers 663IESG Internet Engineering Steering Group 664IETF Internet Engineering Task Force 665IF intermediate frequency 666IFCM isochronous flow control mode 667IFF Interchange File Format 668IFS internal field separator 669IGD Internet gateway device 670IGMP Internet Group Management Protocol 671IGP interior gateway protocol 672IHV independent hardware vendor 673IKE Internet key exchange 674ILM internal loopback mode 675ILOM integrated lights-out management 676ILP instruction level parallelism 677IM instant messaging 678IMAP Internet Message Access Protocol 679IMC integrated memory controller 680IMCR interrupt mode configuration register 681IMR interrupt mask register 682IMS information management system 683IMSI international mobile subscriber identity 684INCITS InterNational Committee for Information Technology Standards 685IO input/output 686IOCTL input/output control 687IOM input/output managers 688IOMMU input/output memory management unit 689IOT Internet of Things 690IP Internet Protocol 691IP intellectual property 692IPC instructions per cycle 693IPC interprocess communication 694IPCF interprocess communication facility 695IPE integrated programming environment 696IPI intelligent peripheral interface 697IPI interprocessor interrupt 698IPL Initial Program Load 699IPL Interrupt Priority Level 700IPMB Intelligent Platform Management Bus 701IPMI Intelligent Platform Management Interface 702IPNG Internet Protocol, Next Generation 703IPS in-plane switching 704IPS intrusion prevention system 705IPSEC Internet Protocol Security 706IRC Internet Relay Chat 707IRDA infrared data association 708IRQ interrupt request 709IRQL interrupt request level 710IRR interrupt request register 711IRTF Internet Research Task Force 712IS information system 713ISA industry standard architecture 714ISA instruction set architecture 715ISDN integrated services digital network 716ISI inter-symbol interference 717ISL initial system load 718ISM industrial, scientific, [and] medical 719ISN initial serial number 720ISO International Standards Organization 721ISOC Internet Society 722ISP Internet service provider 723ISR in-service register 724ISR interrupt service routine 725IST interrupt stack table 726ISV independent software vendor 727IT information technology 728ITB Intel Turbo Boost 729ITIL information technology infrastructure library 730ITP in-target probe 731ITSM IT service management 732IV initialization vector 733IVT interrupt vector table 734JBOD just a bunch of disks 735JCL Job Control Language 736JFET junction [gate] field-effect transistor 737JIT just in time 738JPEG Joint Photographic Experts Group 739JRE Java Runtime Environment 740JSON JavaScript Object Notation 741JTAG joint test action group 742KASLR kernel address space layout randomization 743KB keyboard 744KB kilobyte 745KBD keyboard 746KBD kilobaud 747KCS keyboard controller style 748KLOC thousand lines of code 749KMS kernel-mode setting 750KPI kernel programming interface 751KVA kernel virtual address 752KVM kernel virtual machine 753KVM kernel virtual memory 754KVM keyboard, video, [and] mouse 755L2CAP link layer control and adaptation protocol 756LAMP Linux Apache MySQL {Perl,PHP,Python} 757LAN local area network 758LAPIC local advanced programmable interrupt controller 759LAR load access rights 760LBA logical block addressing 761LBNF labeled backus-naur form 762LBS location-based service 763LCD liquid crystal display 764LCP link control protocol 765LDA local delivery agent 766LDAP Lightweight Directory Access Protocol 767LDR light-dependent resistor 768LDT local descriptor table 769LE logical extent 770LED light emitting diode 771LELL low energy link layer 772LER label edge router 773LF line feed 774LF low frequency 775LFM lowest frequency mode 776LFN long file names 777LFO low-frequency oscillation 778LFS log-structured file system 779LFU least frequently used 780LHP loop heat pipe 781LIF logical interchange format 782LIFO last in, first out 783LILO LInux LOader 784LILO last in, last out 785LINT local interrupt 786LIR local Internet registry 787LISP LISt Processor 788LISP Locator/ID Separation Protocol 789LKM {Linux,loadable} kernel module 790LKML Linux kernel mailing list 791LL load linked 792LL/SC load linked/store conditional 793LLC logical link control 794LLD low-level design 795LLDD low-level design document 796LLDP link layer discovery protocol 797LLF low level format 798LLMNR link-local multicast name resolution 799LLVM Low Level Virtual Machine 800LM long mode 801LMM link management mode 802LMP link management protocol 803LNO loop nest optimization 804LOC lines of code 805LOM lights-out management 806LPE Linux performance events 807LPC low pin count 808LPS local positioning system 809LRC longitudinal redundancy check 810LRM left-to-right mark 811LRO left-to-right override 812LRU least recently used 813LSAN Leak Sanitizer 814LSB Linux standards base 815LSB least significant {bit,byte} 816LSI large scale integration 817LSL load segment limit 818LSM log structured merge 819LSN Large Scale NAT 820LSN log sequence number 821LSR label switch router 822LTCC low temperature co-fired ceramic 823LTO linear tape-open 824LTO link time optimization 825LTR left to right 826LTR load task register 827LTR letter(-sized paper) 828LTS long term support 829LUA Lua Uppercase Accident 830LUN logical unit number 831LV logical volume 832LVM logical volume management 833LVT local vector table 834LVDS Low-Voltage Differential Signaling 835LWP light-weight process 836LZSS Lempel Ziv Storer Szymanski 837LZW Lempel Ziv Welch 838MAC mandatory access control 839MAC {media,medium} access control 840MAC message authentication {check,code} 841MADT multiple APIC descriptor table 842MB megabyte 843MBA multi-boot agent 844MBR master boot record 845MBS megabits per second 846MC memory controller 847MCA machine check architecture 848MCA MicroChannel architecture 849MCC multiversion concurrency control 850MCE machine check exception 851MCGA Multi-Color Graphics Array 852MCH memory controller hub 853MCM multi-chip module 854MCQ memory controlled queue 855MD machine-dependent 856MD-SAL model-driven service abstraction layer 857MDA mail delivery agent 858MDA Monochrome Display Adapter 859MDC Management Data Clock 860MDI Medium Dependent Interface 861MDI-X Medium Dependent Interface Crossover 862MDIO Management Data Input/Output 863MDMX MIPS Digital Media eXtension 864MDRAM multibank dynamic random access memory 865MESI modified, exclusive, shared, invalid 866MFC merge from current 867MFC Microsoft Foundation Classes 868MFM modified frequency modulation 869MFU most frequently used 870MI machine-independent 871MI machine interface 872MIB management information base 873MIC message integrity {check,code} 874MID mobile Internet device 875MIDI musical instrument digital interface 876MIF management information format 877MII media independent interface 878MIM man in the middle 879MIMD multiple instruction, multiple data 880MIME Multipurpose Internet Mail Extensions 881MIMO multiple input multiple output 882MIPS million instructions per second 883MIPS Microprocessor without Interlocked Pipeline Stages 884MISD multiple instruction, single data 885MIT Massachusetts Institute of Technology 886MITM man in the middle 887ML machine language 888ML machine learning 889ML mailing list 890ML markup language 891ML maximum likelihood 892MLC multi-level cell 893MLD multicast listener discovery 894MLHP micro loop heat pipe 895MMF multi-mode fiber 896MMIC monolithic microwave integrated circuit 897MMIO memory mapped input/output 898MMORPG massive multiplayer online role playing game 899MMU memory management unit 900MMX matrix math extension 901MMX multimedia extension 902MMX multiple math extension 903MO magneto-optical 904MOESI modified, owned, exclusive, shared, invalid 905MOF maximum operating frequency 906MOSFET metal-oxide-semiconductor field-effect transistor 907MOSI modified, owned, shared, invalid 908MP multi-platform 909MP multiplayer 910MP {multiprocessing,multiprocessor} 911MPEG moving picture experts group 912MPI message passing interface 913MPLS Multiprotocol Label Switching 914MPP massively parallel processor 915MPS memory pool system 916MPS multiprocessor specification 917MQTT Message Queuing Telemetry Transport 918MR modem ready 919MRU most recently used 920MS Microsoft 921MSAN Memory Sanitizer 922MSB most significant {bit,byte} 923MSC message sequence chart 924MSE mean square error 925MSF minutes seconds frames 926MSI message signaled interrupt 927MSI modified, shared, invalid 928MSR {machine state,model-specific} register 929MSS maximum segment size 930MSTP Multiple Spanning Tree Protocol 931MT machine translation 932MTA mail transfer agent 933MTBF mean time between failures 934MTP media transfer protocol 935MTRR memory type range register 936MTTF mean time to failure 937MTU maximum transmission unit 938MUA mail user agent 939MUD multi-user domain 940MVCC multiversion concurrency control 941MWE module width encoding 942MX mail exchange 943NACK negative acknowledgement 944NAK negative acknowledgement 945NAN not a number 946NAPT Network Address Port Translation 947NAS network attached storage 948NAT network address translation 949NAV network allocation vector 950NC numerical control 951NC-SI network controller sideband interface 952NCO numerically-controlled oscillator 953NCP Network Control Protocol 954NCSI network connectivity status indicator 955NCQ native command queuing 956ND neighbor discovery 957NDFA nondeterministic finite automaton 958NE numeric error 959NEWS Network extensible Window System 960NFA nondeterministic finite automaton 961NFC near-field communication 962NFCI no functional change intended 963NFS network file system 964NFV network function virtualization 965NIA next instruction address 966NIC network information center 967NIC network interface card 968NIDS network intrusion detection system 969NIP network interface protocol 970NIPS network intrusion prevention system 971NIS network information service 972NIST National Institute of Standards and Technology 973NLS native language support 974NMI non-maskable interrupt 975NNTP Network News Transfer Protocol 976NOC network operations center 977NOP no operation 978NOS network operating system 979NP nondeterministic polynomial time 980NRND not recommended for new designs 981NRZ non-return to zero 982NSA nation-state adversary 983NSA no such agency 984NSA National Security Agency 985NTM non-deterministic Turing machine 986NTP Network Time Protocol 987NUMA non-uniform memory access 988NVMM NetBSD Virtual Machine Monitor 989NVMM non-volatile main memory 990NVRAM non-volatile random access memory 991NW not write-through 992NX no execute 993OAEP optimal asymmetric encryption padding 994OAM operations, administration, and {management,maintenance} 995OBO off by one 996OBOE off by one error 997OCL object constraint language 998OCR optical character recognition 999ODE offline device environment 1000ODM object data manager 1001ODCM on-demand clock modulation 1002ODT on-die termination 1003OEM original equipment manufacturer 1004OFB output feedback 1005OFDM orthogonal frequency division multiplexing 1006OFET organic field-effect transistor 1007OLAP online analytical processing 1008OLE object linking and embedding 1009OLTP online transaction processing 1010ONFI open nand flash interface 1011OO OpenOffice 1012OO object oriented 1013OOB out of band 1014OOE out of order execution 1015OOM out of memory 1016OOO OpenOffice.org 1017OOP object oriented programming 1018OOPS object oriented programming systems 1019OOSE object oriented software engineering 1020OPM operations per minute 1021OPS operations per second 1022OQL Object Query Language 1023ORB object request broker 1024ORM object-relational mapping 1025OS operating system 1026OSD open source definition 1027OSF open software foundation 1028OSI Open Source Initiative 1029OSI open systems interconnection 1030OSPF open shortest path first 1031OSPM OS power management 1032OSS open sound system 1033OSS open source software 1034OSVW operating system visible workarounds 1035OTP one time password 1036OTP open telecom platform 1037OU organizational unit 1038OUI organizationally unique identifier 1039OWL Web Ontology Language 1040P2P PCI to PCI 1041P2P peer to peer 1042PA phase accumulator 1043PA physical address 1044PAAS platform as a service 1045PAC phase-amplitude converter 1046PAE physical address extension 1047PAL phase alternating line 1048PAL programmable array logic 1049PAM pluggable authentication modules 1050PAM pulse amplitude modulation 1051PAP password authentication protocol 1052PAT page attribute table 1053PAT port address translation 1054PATA parallel ATA 1055PAX portable archive exchange 1056PBE pending break encoding 1057PBE programming by example 1058PC personal computer 1059PC program counter 1060PCB printed circuit board 1061PCB process control block 1062PCB Protocol Control Block 1063PCC Portable C Compiler 1064PCD page-level cache disable 1065PCE path computation element 1066PCE performance-monitor counter enable 1067PCEP Path Computation Element Protocol 1068PCH platform controller hub 1069PCI peripheral component interconnect 1070PCM phase change memory 1071PCM pulse code modulation 1072PCMCIA Personal Computer Memory Card International Association 1073PCP Port Control Protocol 1074PD public domain 1075PDA personal digital assistant 1076PDA pushdown automaton 1077PDAG propositional directed acyclic graph 1078PDB power distribution board 1079PDF portable document format 1080PDM pulse-duration modulation 1081PDN pull-down network 1082PDP page {descriptor,directory} page 1083PDS product data sheet 1084PDU protocol data unit 1085PE protection enable 1086PEAP Protected EAP 1087PECI platform environment control interface 1088PEP protocol extension protocol 1089PER packed encoding rules 1090PFS perfect forward secrecy 1091PGAS partitioned global address space 1092PGE page global enable 1093PGP Pretty Good Privacy 1094PHB PCI host bridge 1095PHP PHP: Hypertext Preprocessor 1096PIC performance instrumentation counters 1097PIC position independent code 1098PIC programmable interrupt controller 1099PICNIC problem in chair, not in computer 1100PID process id 1101PIE position independent executable 1102PIL Priority Interrupt Level 1103PIM personal information manager 1104PIM platform-independent model 1105PIO programmed input/output 1106PIPT physically indexed, physically tagged 1107PIQ prefetch input queue 1108PIT programmable interrupt timer 1109PIV personal identity verification 1110PIX Private Internet eXchange 1111PKCS public-key cryptography standards 1112PKI public key infrastructure 1113PLC programmable logic controller 1114PLD programmable logic device 1115PLL phase locked loop 1116PLRU pseudo LRU 1117PLTM package level thermal management 1118PM power management 1119PM {phase,pulse} modulation 1120PMC performance monitoring counters 1121PME power management event 1122PMEG page map entry group 1123PMI performance monitoring infrastructure 1124PMI platform management interrupt 1125PMIC power management integrated circut 1126PMIO port-mapped input/output 1127PMT photo-multiplier tube 1128PMU performance monitoring units 1129PMU power management unit 1130PNG portable network graphics 1131PNP plug and play 1132POE power over ethernet 1133POF probability of failure 1134POP Post Office Protocol 1135POP power on password 1136POSIX Portable Operating System Interface [for Unix] 1137POST power on self test 1138POTS plain old telephone system 1139POWER Performance Optimization With Enhanced RISC 1140POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1141PP pair programming 1142PPB PCI [to] PCI bridge 1143PPC PowerPC 1144PPC Power Performance Computing 1145PPI pixels per inch 1146PPM pages per minute 1147PPP Point-to-Point Protocol 1148PPPOA Point-to-Point Protocol over ATM 1149PPPOE Point-to-Point Protocol over Ethernet 1150PPU physics processing unit 1151PRAM Parameter RAM 1152PRBS pseudorandom bit sequence 1153PRG pseudorandom generator 1154PRF pseudorandom function [family] 1155PRML partial response, maximum likelihood 1156PRN pseudorandom {noise,number} 1157PRNG pseudorandom number generator 1158PROM programmable read only memory 1159PRP pseudorandom permutation 1160PRU Programmable Realtime Unit 1161PS PostScript 1162PSD power spectral density 1163PSE page size extensions 1164PSK phase shift keying 1165PSK pre-shared key 1166PSTN public switched telephone network 1167PSW program status word 1168PTE page table entry 1169PTLA pseudo top level aggregator 1170PTP page table page 1171PTV perceived target value 1172PU processing unit 1173PUC personal unblocking code 1174PUN physical unit number 1175PV physical volume 1176PVG physical volume group 1177PVI protected-mode virtual interrupt 1178PVST Per-VLAN Spanning Tree 1179PWM pulse width modulation 1180PXE preboot execution environment 1181QA quality assurance 1182QAM quadrature amplitude modulation 1183QAM quality assurance management 1184QBE query by example 1185QC quality control 1186QDI quasi delay insensitive 1187QCIF quarter common intermediate format 1188QOS quality of service 1189QVL qualified vendor list 1190R/O read only 1191R/W read/write 1192RA receiver address 1193RA remote assistance 1194RA resource affinity 1195RA router advertisement 1196RAD rapid application development 1197RAID redundant array of {independent,inexpensive} disks 1198RAM random access memory 1199RAS reliability, availability and serviceability 1200RAS remote access service 1201RAS restartable atomic sequence 1202RAS row address strobe 1203RBF radial basis function 1204RBNF routing backus-naur form 1205RBT red-black tree 1206RC release candidate 1207RC remote control 1208RC run commands 1209RCS Revision Control System 1210RCS revision control system 1211RCU read, copy, update 1212RDB Rigid Disk Block 1213RDBMS relational database management system 1214RDF Resource Description Framework 1215RDM relational data model 1216RDMA remote direct memory access 1217RDRAM Rambus DRAM 1218RE regular expression 1219REST representational state transfer 1220RF radio frequency 1221RFI radio frequency interference 1222RFO request for ownership 1223RFU reserved for future use 1224RGB red green blue 1225RGBA red green blue alpha 1226RGMII reduced gigabit media independent interface 1227RH read hit 1228RHEL Red Hat Enterprise Linux 1229RHL Red Hat Linux 1230RIB routing information base 1231RIFF Resource Interchange File Format 1232RIP Raster Image Processor 1233RIP Routing Information Protocol 1234RIR regional Internet registry 1235RISC reduced instruction set {computer,computing} 1236RKM ROM Kernel Manual 1237RLE run length encoding 1238RLL run length limited 1239RLO right-to-left override 1240RM read miss 1241RMCP Remote Management Control Protocol 1242RMI remote method invocation 1243RMO Relaxed Memory Ordering 1244RMPM rapid memory power management 1245RMS root mean square 1246RMW read, modify, write 1247RNG random number generator 1248ROM read only memory 1249RPC remote procedure call 1250RPKI resource PKI 1251RPL requested privilege level 1252RPM revolutions per minute 1253RPN reverse Polish notation 1254RPVST Rapid Per-VLAN Spanning Tree 1255RR random replacement 1256RR round robin 1257RS relay station 1258RSA Rivest, Shamir, [and] Adleman 1259RSIP Realm Specific IP 1260RSN Robust Secure Network 1261RSS really simple syndication 1262RSS residual sum of squares 1263RSTP Rapid Spanning Tree Protocol 1264RT real time 1265RTC real time clock 1266RTC real time computing 1267RTF rich text format 1268RTL register transfer language 1269RTL resistor-transistor logic 1270RTL right to left 1271RTOS real time operating system 1272RTS request to send 1273RTT round trip time 1274RUP rational unified process 1275RW Rabin-Williams 1276RWM read-write memory 1277RX {receive,receiver} 1278S/PDIF Sony/Philips Digital Interface Format 1279SA security advisory 1280SA security association 1281SA source address 1282SA structured analysis 1283SAAS software as a service 1284SACD super audio compact disc 1285SAD security association database 1286SAL {service,system} abstraction layer 1287SAM serial access memory 1288SAM sum addressed memory 1289SAML security assertion markup language 1290SAN storage area network 1291SAP service access point 1292SAPIC streamlined advanced programmable interrupt controller 1293SASD structured analysis, structured design 1294SASI Shugart Associates System Interface 1295SASL simple authentication [and] security layer 1296SATA serial advanced technology attachment 1297SAX simple API for XML 1298SB sound blaster 1299SBU standard build unit 1300SC store conditional 1301SCA source code analyzer 1302SCADA supervisory control and data acquisition 1303SCC single chip cloud 1304SCC source code control 1305SCCS Source Code Control System 1306SCI scalable coherent interface 1307SCI system control interrupt 1308SCM software configuration management 1309SCM source code management 1310SCM storage-class memory 1311SCO synchronous connection orientated 1312SCP secure copy 1313SCSI Small Computer System Interface 1314SCTP Stream Control Transmission Protocol 1315SDEI software delegated exception interface 1316SDI symbol deinterleave 1317SDK software development kit 1318SDL Simple Declarative Language 1319SDL Simple Direct-media Layer 1320SDLC {software,system,systems} development life cycle 1321SDN software defined networking 1322SDP Session Description Protocol 1323SDRAM synchronous dynamic random access memory 1324SDS software defined storage 1325SDT syntax-directed translation 1326SEA synchronous external abort 1327SEGV segmentation violation 1328SEO search engine optimization 1329SES SCSI enclosure services 1330SFC sequential function chart 1331SFI simple firmware interface 1332SFI software fault isolation 1333SFTP SSH File Transfer Protocol 1334SFTP Serial File Transfer Protocol 1335SFTP Simple File Transfer Protocol 1336SGMII serial gigabit media independent interface 1337SGRAM synchronous graphics random access memory 1338SHA secure hash algorithm 1339SIDH supersingular isogeny Diffie-Hellman 1340SIEM security information and event management 1341SIF source input format 1342SIFS short inter-frame space 1343SIM subscriber identity module 1344SIMD single instruction, multiple data 1345SIMM single inline memory module 1346SIP Session Initiation Protocol 1347SIR signal-to-interference ratio 1348SIR slow infrared 1349SISD single instruction, single data 1350SLAAC stateless address auto-configuration 1351SLC single-level cell 1352SLDRAM synchronous-link dynamic random access memory 1353SLED single large expensive disk 1354SLI scalable link interface 1355SLI scan-line interleave 1356SLIC system license internal code 1357SLOC source lines of code 1358SLRU segmented LRU 1359SMA smart memory access 1360SMAF system management action field 1361SMAP Simple Mail Access Protocol 1362SMAP supervisor mode access prevention 1363SMART self-monitoring analysis and reporting technology 1364SMB Server Message Block 1365SMB system management bus 1366SMBIOS System Management BIOS 1367SMC system management controller 1368SMD storage module device 1369SMEP supervisor mode execution protection 1370SMF single mode fiber 1371SMI structure of management information 1372SMI system management interrupt 1373SMM system management mode 1374SMP symmetric multiprocessing 1375SMT simultaneous multithreading 1376SMTP Simple Mail Transfer Protocol 1377SMU system management unit 1378SNA systems network architecture 1379SNAP Sub-Network Access Protocol 1380SNIA Storage Networking Industry Association 1381SNMP Simple Network Management Protocol 1382SNR signal-to-noise ratio 1383SOA service oriented architecture 1384SOAP Simple Object Access Protocol 1385SOC system on chip 1386SOF start of frame 1387SOH start of header 1388SOHO small office/home office 1389SOL serial over LAN 1390SOM system on module 1391SP service pack 1392SP stack pointer 1393SPA storage pool allocator 1394SPARC scalable processor architecture 1395SPARQL SPARQL Protocol and RDF Query Language 1396SPD security policy database 1397SPD serial presence detect 1398SPDIF Sony/Philips digital interface format 1399SPI serial peripheral interface 1400SPI stateful packet inspection 1401SPL system interrupt priority level 1402SPL spinlock 1403SPMD single process, multiple data 1404SPR special purpose register 1405SPT sectors per track 1406SQA software quality assurance 1407SQCIF sub quarter common intermediate format 1408SQL Structured Query Language 1409SRAM static random access memory 1410SRC sample rate conversion 1411SRP SCSI RDMA protocol 1412SS self-snoop 1413SS stack segment 1414SSA static single assignment 1415SSAP source service access point 1416SSB single-sideband modulation 1417SSD solid state drive 1418SSE streaming SIMD extensions 1419SSFDC solid state floppy disc card 1420SSH secure shell 1421SSI server side includes 1422SSID service set identifier 1423SSL secure sockets layer 1424SSP stack smashing protection 1425STC software thermal control 1426STD state transition diagram 1427STOMP Streaming Text Oriented Messaging Protocol 1428STP Spanning Tree Protocol 1429STP shielded twisted pair 1430SUN Stanford University Network 1431SUS Single Unix Specification 1432SUT system under test 1433SVG scalable vector graphics 1434SVGA Super Video Graphics Array 1435SVI {switch,switched} virtual interface 1436SVM secure virtual machine 1437SVM support vector machine 1438SVR System V Release 1439SVS Separate Virtual Space 1440SWF Shockwave Flash 1441SWIG simplified wrapper [and] interface generator 1442SYR symbol timing recovery 1443TA test assertion 1444TA transmitter address 1445TAI international atomic time 1446TAO track at once 1447TAOCP The Art of Computer Programming 1448TAP Test Anything Protocol 1449TAS test and set 1450TB terabyte 1451TBNF transitional backus-naur form 1452TCB trace capture buffer 1453TCB trusted computing base 1454TCC thermal control circuit 1455TCL tool command language 1456TCP Transmission Control Protocol 1457TCQ tagged command queueing 1458TDC time [to] digital converter 1459TDD test-driven development 1460TDD time division duplex 1461TDM time division multiplexing 1462TDMA time division multiple access 1463TDOA time difference of arrival 1464TDP thermal design {point,power} 1465TECO Text Editor and Corrector 1466TFT thin film transistor 1467TFTP Trivial File Transfer Protocol 1468TIAS try it and see 1469TIFF tagged image file format 1470TITS try it to see 1471TK temporal key 1472TKIP Temporal Key Integrity Protocol 1473TLA top level aggregator 1474TLB translation lookaside buffer 1475TLD top level domain 1476TLI transport layer interface 1477TLS thread local storage 1478TLS transport layer security 1479TM Turing machine 1480TM thermal monitor 1481TMDS transition minimized differential signaling 1482TMO timeout 1483TOD time of day 1484TOS terms of service 1485TOS trusted operating system 1486TOS type of service 1487TP transaction processing 1488TPI tracks per inch 1489TPM transactions per minute 1490TPM trusted platform module 1491TPR task priority register 1492TPS transactions per second 1493TPS transmission parameters signaling 1494TR task register 1495TR token ring 1496TRL timing recovery loop 1497TRNG true random number generator 1498TS terminal services 1499TS time series 1500TS time stamp 1501TS transport stream 1502TSAN Thread Sanitizer 1503TSC time stamp counter 1504TSD time stamp disable 1505TSDB time series database 1506TSL test, set, lock 1507TSO time sharing option 1508TSO Total Store Ordering 1509TSP Time-Stamp Protocol 1510TSP Tunnel Setup Protocol 1511TSP time synchronization protocol 1512TSP traveling salesman problem 1513TSS task state segment 1514TTL time to live 1515TTL transistor-transistor logic 1516TTM translation table maps 1517TTY teletype 1518TUI {terminal,text-based,textual} user interface 1519TX {transmit out,transmitter} 1520TXG transaction group 1521TZ time zone 1522UAC user {access,account} control 1523UAF use-after-free 1524UART universal asynchronous receiver/transmitter 1525UAT user acceptance testing 1526UB undefined behavior 1527UBSAN Undefined Behavior Sanitizer 1528UC uncacheable 1529UCS uniform-cost search 1530UDMA ultra DMA 1531UDO ultra density optical 1532UDP User Datagram Protocol 1533UEFI unified extensible firmware interface 1534UFS Unix File System 1535UGA universal graphics adapter 1536UI unit interval 1537UI user interface 1538UICC universal integrated circuit card 1539UID unique identifier 1540UID user identifier 1541UL upload 1542UMA uniform memory access 1543UMA upper memory area 1544UMB upper memory block 1545UML unified modeling language 1546UMPC ultra-mobile PC 1547UPNP universal plug and play 1548UPS uninterruptible power supply 1549URI uniform resource identifier 1550URL uniform resource locator 1551URN uniform resource name 1552USART universal synchronous/asynchronous receiver/transmitter 1553USB universal serial bus 1554USWC uncacheable speculative write combining 1555UT unit test 1556UTC coordinated universal time 1557UTP unshielded twisted pair 1558UUCP Unix-to-Unix Copy Protocol 1559UUID universally unique identifier 1560UUOC useless use of cat 1561UUT unit under test 1562UX user experience 1563VA vertical alignment 1564VA virtual address 1565VA volt-ampere 1566VAX virtual address extension 1567VB Visual Basic 1568VCA variable-gain amplifier 1569VCC common collector voltage 1570VCF voltage-controlled filter 1571VCM virtual channel memory 1572VCO voltage-controlled oscillator 1573VCS version control system 1574VESA Video Electronics Standards Association 1575VFO variable-frequency oscillator 1576VFS virtual file system 1577VG volume group 1578VGA Video Graphics Array 1579VHDCI very high density cable interconnect 1580VID {VLAN,voltage level} identifier 1581VIM Vi IMproved 1582VIPT virtually indexed, physically tagged 1583VIVT virtually indexed, virtually tagged 1584VLAN virtual local area network 1585VLIW very long instruction word 1586VLSI very large scale integration 1587VLSM variable length subnet mask 1588VM virtual {machine,memory} 1589VME virtual mode extension 1590VMX vector multimedia extensions 1591VMX virtual machine extensions 1592VOD video on demand 1593VPD vital product data 1594VPN virtual private network 1595VR virtual reality 1596VRAM video random access memory 1597VRF virtual routing and forwarding 1598VRM voltage regulator module 1599VRRP Virtual Router Redundancy Protocol 1600VSTP VLAN Spanning Tree Protocol 1601VTP VLAN Trunking Protocol 1602VXFS Veritas file sytem 1603VXVM Veritas volume manager 1604W watt 1605W3C World Wide Web Consortium 1606WAFL write anywhere file layout 1607WAMP Web Application Messaging Protocol 1608WAN wide area network 1609WAP Wireless Application Protocol 1610WAP wireless access point 1611WDM Windows Driver Model 1612WDDM Windows Display Driver Model 1613WDT watchdog timer 1614WEP Wired Equivalent Privacy 1615WFI wait for interrupt 1616WFQ weighted fair queuing 1617WH write hit 1618WIFI wireless fidelity 1619WLAN wireless local area network 1620WM write miss 1621WMI Windows Management Instrumentation 1622WOL Wake-on-LAN 1623WOM Wake-on-Modem 1624WOR Wake-on-Ring 1625WORM write once read many 1626WP WordPerfect 1627WP word processor 1628WP write protect 1629WPA Wi-Fi Protected Access 1630WPA2 Wi-Fi Protected Access II 1631WPS Wi-Fi Protected Setup 1632WRAM window random access memory 1633WS web services 1634WTC write through caching 1635WWAN wireless wide area network 1636WWW world wide web 1637WYSIAYG what you see is all you get 1638WYSIWYG what you see is what you get 1639XBAR crossbar 1640XDMCP X Display Manager control protocol 1641XER XML encoding rules 1642XGA Extended Graphics Array 1643XHR XMLHttpRequest 1644XIP execute in place 1645XML Extensible Markup Language 1646XNA XNA's not acronymed 1647XNS Xerox network systems 1648XOR exclusive or 1649XP extreme programming 1650XSI X/Open System Interface 1651XSL extensible stylesheet language 1652XSS cross site scripting 1653XT extended technology 1654XTI X/Open transport interface 1655XUL XML user interface language 1656YACC yet another compiler compiler 1657YAML YAML ain't markup language 1658YANG yet another next generation 1659YAWPFAPR you are welcome; please file a problem report 1660YP Yellow Pages 1661YTD year to date 1662ZAP ZFS attribute processor 1663ZBR zone bit recording 1664ZFOD zero-filled on demand 1665ZFS zettabyte file system 1666ZIF zero insertion force 1667ZIFS zero insertion force socket 1668ZIL ZFS intent log 1669ZMA zone multicast address 1670ZOI zero one infinity 1671ZOI zone of influence 1672ZPL ZFS Posix layer 1673ZVOL ZFS Volume 1674