acronyms.comp revision 1.246
1$NetBSD: acronyms.comp,v 1.246 2019/04/17 17:44:51 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 755LAMP Linux Apache MySQL {Perl,PHP,Python} 756LAN local area network 757LAPIC local advanced programmable interrupt controller 758LAR load access rights 759LBA logical block addressing 760LBNF labeled backus-naur form 761LBS location-based service 762LCD liquid crystal display 763LCP link control protocol 764LDA local delivery agent 765LDAP Lightweight Directory Access Protocol 766LDR light-dependent resistor 767LDT local descriptor table 768LE logical extent 769LED light emitting diode 770LELL low energy link layer 771LER label edge router 772LF line feed 773LF low frequency 774LFM lowest frequency mode 775LFN long file names 776LFO low-frequency oscillation 777LFS log-structured file system 778LFU least frequently used 779LHP loop heat pipe 780LIF logical interchange format 781LIFO last in, first out 782LILO LInux LOader 783LILO last in, last out 784LINT local interrupt 785LIR local Internet registry 786LISP LISt Processor 787LISP Locator/ID Separation Protocol 788LKM {Linux,loadable} kernel module 789LKML Linux kernel mailing list 790LL load linked 791LL/SC load linked/store conditional 792LLC logical link control 793LLD low-level design 794LLDD low-level design document 795LLDP link layer discovery protocol 796LLF low level format 797LLMNR link-local multicast name resolution 798LLVM Low Level Virtual Machine 799LM long mode 800LMM link management mode 801LMP link management protocol 802LNO loop nest optimization 803LOC lines of code 804LOM lights-out management 805LPE Linux performance events 806LPC low pin count 807LPS local positioning system 808LRC longitudinal redundancy check 809LRM left-to-right mark 810LRO left-to-right override 811LRU least recently used 812LSAN Leak Sanitizer 813LSB Linux standards base 814LSB least significant {bit,byte} 815LSI large scale integration 816LSL load segment limit 817LSM log structured merge 818LSN Large Scale NAT 819LSN log sequence number 820LSR label switch router 821LTCC low temperature co-fired ceramic 822LTO linear tape-open 823LTO link time optimization 824LTR left to right 825LTR load task register 826LTR letter(-sized paper) 827LTS long term support 828LUA Lua Uppercase Accident 829LUN logical unit number 830LV logical volume 831LVM logical volume management 832LVT local vector table 833LVDS Low-Voltage Differential Signaling 834LWP light-weight process 835LZSS Lempel Ziv Storer Szymanski 836LZW Lempel Ziv Welch 837MAC mandatory access control 838MAC {media,medium} access control 839MAC message authentication {check,code} 840MADT multiple APIC descriptor table 841MB megabyte 842MBA multi-boot agent 843MBR master boot record 844MBS megabits per second 845MC memory controller 846MCA machine check architecture 847MCA MicroChannel architecture 848MCC multiversion concurrency control 849MCE machine check exception 850MCGA Multi-Color Graphics Array 851MCH memory controller hub 852MCM multi-chip module 853MCQ memory controlled queue 854MD machine-dependent 855MD-SAL model-driven service abstraction layer 856MDA mail delivery agent 857MDA Monochrome Display Adapter 858MDC Management Data Clock 859MDI Medium Dependent Interface 860MDI-X Medium Dependent Interface Crossover 861MDIO Management Data Input/Output 862MDMX MIPS Digital Media eXtension 863MDRAM multibank dynamic random access memory 864MESI modified, exclusive, shared, invalid 865MFC merge from current 866MFC Microsoft Foundation Classes 867MFM modified frequency modulation 868MFU most frequently used 869MI machine-independent 870MI machine interface 871MIB management information base 872MIC message integrity {check,code} 873MID mobile Internet device 874MIDI musical instrument digital interface 875MIF management information format 876MII media independent interface 877MIM man in the middle 878MIMD multiple instruction, multiple data 879MIME Multipurpose Internet Mail Extensions 880MIMO multiple input multiple output 881MIPS million instructions per second 882MIPS Microprocessor without Interlocked Pipeline Stages 883MISD multiple instruction, single data 884MIT Massachusetts Institute of Technology 885MITM man in the middle 886ML machine language 887ML machine learning 888ML mailing list 889ML markup language 890ML maximum likelihood 891MLC multi-level cell 892MLD multicast listener discovery 893MLHP micro loop heat pipe 894MMF multi-mode fiber 895MMIC monolithic microwave integrated circuit 896MMIO memory mapped input/output 897MMORPG massive multiplayer online role playing game 898MMU memory management unit 899MMX matrix math extension 900MMX multimedia extension 901MMX multiple math extension 902MO magneto-optical 903MOESI modified, owned, exclusive, shared, invalid 904MOF maximum operating frequency 905MOSFET metal-oxide-semiconductor field-effect transistor 906MOSI modified, owned, shared, invalid 907MP multi-platform 908MP multiplayer 909MP {multiprocessing,multiprocessor} 910MPEG moving picture experts group 911MPI message passing interface 912MPLS Multiprotocol Label Switching 913MPP massively parallel processor 914MPS memory pool system 915MPS multiprocessor specification 916MQTT Message Queuing Telemetry Transport 917MR modem ready 918MRU most recently used 919MS Microsoft 920MSAN Memory Sanitizer 921MSB most significant {bit,byte} 922MSC message sequence chart 923MSE mean square error 924MSF minutes seconds frames 925MSI message signaled interrupt 926MSI modified, shared, invalid 927MSR {machine state,model-specific} register 928MSS maximum segment size 929MSTP Multiple Spanning Tree Protocol 930MT machine translation 931MTA mail transfer agent 932MTBF mean time between failures 933MTP media transfer protocol 934MTRR memory type range register 935MTTF mean time to failure 936MTU maximum transmission unit 937MUA mail user agent 938MUD multi-user domain 939MVCC multiversion concurrency control 940MWE module width encoding 941MX mail exchange 942NACK negative acknowledgement 943NAK negative acknowledgement 944NAN not a number 945NAPT Network Address Port Translation 946NAS network attached storage 947NAT network address translation 948NAV network allocation vector 949NC numerical control 950NC-SI network controller sideband interface 951NCO numerically-controlled oscillator 952NCP Network Control Protocol 953NCSI network connectivity status indicator 954NCQ native command queuing 955ND neighbor discovery 956NDFA nondeterministic finite automaton 957NE numeric error 958NEWS Network extensible Window System 959NFA nondeterministic finite automaton 960NFC near-field communication 961NFCI no functional change intended 962NFS network file system 963NFV network function virtualization 964NIA next instruction address 965NIC network information center 966NIC network interface card 967NIDS network intrusion detection system 968NIP network interface protocol 969NIPS network intrusion prevention system 970NIS network information service 971NIST National Institute of Standards and Technology 972NLS native language support 973NMI non-maskable interrupt 974NNTP Network News Transfer Protocol 975NOC network operations center 976NOP no operation 977NOS network operating system 978NP nondeterministic polynomial time 979NRND not recommended for new designs 980NRZ non-return to zero 981NSA nation-state adversary 982NSA no such agency 983NSA National Security Agency 984NTM non-deterministic Turing machine 985NTP Network Time Protocol 986NUMA non-uniform memory access 987NVMM NetBSD Virtual Machine Monitor 988NVMM non-volatile main memory 989NVRAM non-volatile random access memory 990NW not write-through 991NX no execute 992OAEP optimal asymmetric encryption padding 993OAM operations, administration, and {management,maintenance} 994OBO off by one 995OBOE off by one error 996OCL object constraint language 997OCR optical character recognition 998ODE offline device environment 999ODM object data manager 1000ODCM on-demand clock modulation 1001ODT on-die termination 1002OEM original equipment manufacturer 1003OFB output feedback 1004OFDM orthogonal frequency division multiplexing 1005OFET organic field-effect transistor 1006OLAP online analytical processing 1007OLE object linking and embedding 1008OLTP online transaction processing 1009ONFI open nand flash interface 1010OO OpenOffice 1011OO object oriented 1012OOB out of band 1013OOE out of order execution 1014OOM out of memory 1015OOO OpenOffice.org 1016OOP object oriented programming 1017OOPS object oriented programming systems 1018OOSE object oriented software engineering 1019OPM operations per minute 1020OPS operations per second 1021OQL Object Query Language 1022ORB object request broker 1023ORM object-relational mapping 1024OS operating system 1025OSD open source definition 1026OSF open software foundation 1027OSI Open Source Initiative 1028OSI open systems interconnection 1029OSPF open shortest path first 1030OSPM OS power management 1031OSS open sound system 1032OSS open source software 1033OSVW operating system visible workarounds 1034OTP one time password 1035OTP open telecom platform 1036OU organizational unit 1037OUI organizationally unique identifier 1038OWL Web Ontology Language 1039P2P PCI to PCI 1040P2P peer to peer 1041PA phase accumulator 1042PA physical address 1043PAAS platform as a service 1044PAC phase-amplitude converter 1045PAE physical address extension 1046PAL phase alternating line 1047PAL programmable array logic 1048PAM pluggable authentication modules 1049PAM pulse amplitude modulation 1050PAP password authentication protocol 1051PAT page attribute table 1052PAT port address translation 1053PATA parallel ATA 1054PAX portable archive exchange 1055PBE pending break encoding 1056PBE programming by example 1057PC personal computer 1058PC program counter 1059PCB printed circuit board 1060PCB process control block 1061PCB Protocol Control Block 1062PCC Portable C Compiler 1063PCD page-level cache disable 1064PCE path computation element 1065PCE performance-monitor counter enable 1066PCEP Path Computation Element Protocol 1067PCH platform controller hub 1068PCI peripheral component interconnect 1069PCM phase change memory 1070PCM pulse code modulation 1071PCMCIA Personal Computer Memory Card International Association 1072PCP Port Control Protocol 1073PD public domain 1074PDA personal digital assistant 1075PDA pushdown automaton 1076PDAG propositional directed acyclic graph 1077PDB power distribution board 1078PDF portable document format 1079PDM pulse-duration modulation 1080PDN pull-down network 1081PDP page {descriptor,directory} page 1082PDS product data sheet 1083PDU protocol data unit 1084PE protection enable 1085PEAP Protected EAP 1086PECI platform environment control interface 1087PEP protocol extension protocol 1088PER packed encoding rules 1089PFS perfect forward secrecy 1090PGAS partitioned global address space 1091PGE page global enable 1092PGP Pretty Good Privacy 1093PHB PCI host bridge 1094PHP PHP: Hypertext Preprocessor 1095PIC performance instrumentation counters 1096PIC position independent code 1097PIC programmable interrupt controller 1098PICNIC problem in chair, not in computer 1099PID process id 1100PIE position independent executable 1101PIL Priority Interrupt Level 1102PIM personal information manager 1103PIM platform-independent model 1104PIO programmed input/output 1105PIPT physically indexed, physically tagged 1106PIQ prefetch input queue 1107PIT programmable interrupt timer 1108PIV personal identity verification 1109PIX Private Internet eXchange 1110PKCS public-key cryptography standards 1111PKI public key infrastructure 1112PLC programmable logic controller 1113PLD programmable logic device 1114PLL phase locked loop 1115PLRU pseudo LRU 1116PLTM package level thermal management 1117PM power management 1118PM {phase,pulse} modulation 1119PMC performance monitoring counters 1120PME power management event 1121PMEG page map entry group 1122PMI performance monitoring infrastructure 1123PMI platform management interrupt 1124PMIC power management integrated circut 1125PMIO port-mapped input/output 1126PMT photo-multiplier tube 1127PMU performance monitoring units 1128PMU power management unit 1129PNG portable network graphics 1130PNP plug and play 1131POE power over ethernet 1132POF probability of failure 1133POP Post Office Protocol 1134POP power on password 1135POSIX Portable Operating System Interface [for Unix] 1136POST power on self test 1137POTS plain old telephone system 1138POWER Performance Optimization With Enhanced RISC 1139POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1140PP pair programming 1141PPB PCI [to] PCI bridge 1142PPC PowerPC 1143PPC Power Performance Computing 1144PPI pixels per inch 1145PPM pages per minute 1146PPP Point-to-Point Protocol 1147PPPOA Point-to-Point Protocol over ATM 1148PPPOE Point-to-Point Protocol over Ethernet 1149PPU physics processing unit 1150PRAM Parameter RAM 1151PRBS pseudorandom bit sequence 1152PRG pseudorandom generator 1153PRF pseudorandom function [family] 1154PRML partial response, maximum likelihood 1155PRN pseudorandom {noise,number} 1156PRNG pseudorandom number generator 1157PROM programmable read only memory 1158PRP pseudorandom permutation 1159PRU Programmable Realtime Unit 1160PS PostScript 1161PSD power spectral density 1162PSE page size extensions 1163PSK phase shift keying 1164PSK pre-shared key 1165PSTN public switched telephone network 1166PSW program status word 1167PTE page table entry 1168PTLA pseudo top level aggregator 1169PTP page table page 1170PTV perceived target value 1171PU processing unit 1172PUC personal unblocking code 1173PUN physical unit number 1174PV physical volume 1175PVG physical volume group 1176PVI protected-mode virtual interrupt 1177PVST Per-VLAN Spanning Tree 1178PWM pulse width modulation 1179PXE preboot execution environment 1180QA quality assurance 1181QAM quadrature amplitude modulation 1182QAM quality assurance management 1183QBE query by example 1184QC quality control 1185QDI quasi delay insensitive 1186QCIF quarter common intermediate format 1187QOS quality of service 1188QVL qualified vendor list 1189R/O read only 1190R/W read/write 1191RA receiver address 1192RA remote assistance 1193RA resource affinity 1194RA router advertisement 1195RAD rapid application development 1196RAID redundant array of {independent,inexpensive} disks 1197RAM random access memory 1198RAS reliability, availability and serviceability 1199RAS remote access service 1200RAS restartable atomic sequence 1201RAS row address strobe 1202RBF radial basis function 1203RBNF routing backus-naur form 1204RBT red-black tree 1205RC release candidate 1206RC remote control 1207RC run commands 1208RCS Revision Control System 1209RCS revision control system 1210RCU read, copy, update 1211RDB Rigid Disk Block 1212RDBMS relational database management system 1213RDF Resource Description Framework 1214RDM relational data model 1215RDMA remote direct memory access 1216RDRAM Rambus DRAM 1217RE regular expression 1218REST representational state transfer 1219RF radio frequency 1220RFI radio frequency interference 1221RFO request for ownership 1222RGB red green blue 1223RGBA red green blue alpha 1224RGMII reduced gigabit media independent interface 1225RH read hit 1226RHEL Red Hat Enterprise Linux 1227RHL Red Hat Linux 1228RIB routing information base 1229RIFF Resource Interchange File Format 1230RIP Raster Image Processor 1231RIP Routing Information Protocol 1232RIR regional Internet registry 1233RISC reduced instruction set {computer,computing} 1234RKM ROM Kernel Manual 1235RLE run length encoding 1236RLL run length limited 1237RLO right-to-left override 1238RM read miss 1239RMCP Remote Management Control Protocol 1240RMI remote method invocation 1241RMO Relaxed Memory Ordering 1242RMPM rapid memory power management 1243RMS root mean square 1244RMW read, modify, write 1245RNG random number generator 1246ROM read only memory 1247RPC remote procedure call 1248RPKI resource PKI 1249RPL requested privilege level 1250RPM revolutions per minute 1251RPN reverse Polish notation 1252RPVST Rapid Per-VLAN Spanning Tree 1253RR random replacement 1254RR round robin 1255RS relay station 1256RSA Rivest, Shamir, [and] Adleman 1257RSIP Realm Specific IP 1258RSN Robust Secure Network 1259RSS really simple syndication 1260RSS residual sum of squares 1261RSTP Rapid Spanning Tree Protocol 1262RT real time 1263RTC real time clock 1264RTC real time computing 1265RTF rich text format 1266RTL register transfer language 1267RTL resistor-transistor logic 1268RTL right to left 1269RTOS real time operating system 1270RTS request to send 1271RTT round trip time 1272RUP rational unified process 1273RW Rabin-Williams 1274RWM read-write memory 1275RX {receive,receiver} 1276S/PDIF Sony/Philips Digital Interface Format 1277SA security advisory 1278SA security association 1279SA source address 1280SA structured analysis 1281SAAS software as a service 1282SACD super audio compact disc 1283SAD security association database 1284SAL {service,system} abstraction layer 1285SAM serial access memory 1286SAM sum addressed memory 1287SAML security assertion markup language 1288SAN storage area network 1289SAP service access point 1290SAPIC streamlined advanced programmable interrupt controller 1291SASD structured analysis, structured design 1292SASI Shugart Associates System Interface 1293SASL simple authentication [and] security layer 1294SATA serial advanced technology attachment 1295SAX simple API for XML 1296SB sound blaster 1297SBU standard build unit 1298SC store conditional 1299SCA source code analyzer 1300SCADA supervisory control and data acquisition 1301SCC single chip cloud 1302SCC source code control 1303SCCS Source Code Control System 1304SCI scalable coherent interface 1305SCI system control interrupt 1306SCM software configuration management 1307SCM source code management 1308SCM storage-class memory 1309SCO synchronous connection orientated 1310SCP secure copy 1311SCSI Small Computer System Interface 1312SCTP Stream Control Transmission Protocol 1313SDEI software delegated exception interface 1314SDI symbol deinterleave 1315SDK software development kit 1316SDL Simple Declarative Language 1317SDL Simple Direct-media Layer 1318SDLC {software,system,systems} development life cycle 1319SDN software defined networking 1320SDP Session Description Protocol 1321SDRAM synchronous dynamic random access memory 1322SDS software defined storage 1323SDT syntax-directed translation 1324SEA synchronous external abort 1325SEGV segmentation violation 1326SEO search engine optimization 1327SES SCSI enclosure services 1328SFC sequential function chart 1329SFI simple firmware interface 1330SFI software fault isolation 1331SFTP SSH File Transfer Protocol 1332SFTP Serial File Transfer Protocol 1333SFTP Simple File Transfer Protocol 1334SGMII serial gigabit media independent interface 1335SGRAM synchronous graphics random access memory 1336SHA secure hash algorithm 1337SIDH supersingular isogeny Diffie-Hellman 1338SIEM security information and event management 1339SIF source input format 1340SIFS short inter-frame space 1341SIM subscriber identity module 1342SIMD single instruction, multiple data 1343SIMM single inline memory module 1344SIP Session Initiation Protocol 1345SIR signal-to-interference ratio 1346SIR slow infrared 1347SISD single instruction, single data 1348SLAAC stateless address auto-configuration 1349SLC single-level cell 1350SLDRAM synchronous-link dynamic random access memory 1351SLED single large expensive disk 1352SLI scalable link interface 1353SLI scan-line interleave 1354SLIC system license internal code 1355SLOC source lines of code 1356SLRU segmented LRU 1357SMA smart memory access 1358SMAF system management action field 1359SMAP Simple Mail Access Protocol 1360SMAP supervisor mode access prevention 1361SMART self-monitoring analysis and reporting technology 1362SMB Server Message Block 1363SMB system management bus 1364SMBIOS System Management BIOS 1365SMC system management controller 1366SMD storage module device 1367SMEP supervisor mode execution protection 1368SMF single mode fiber 1369SMI structure of management information 1370SMI system management interrupt 1371SMM system management mode 1372SMP symmetric multiprocessing 1373SMT simultaneous multithreading 1374SMTP Simple Mail Transfer Protocol 1375SMU system management unit 1376SNA systems network architecture 1377SNAP Sub-Network Access Protocol 1378SNIA Storage Networking Industry Association 1379SNMP Simple Network Management Protocol 1380SNR signal-to-noise ratio 1381SOA service oriented architecture 1382SOAP Simple Object Access Protocol 1383SOC system on chip 1384SOF start of frame 1385SOH start of header 1386SOHO small office/home office 1387SOL serial over LAN 1388SOM system on module 1389SP service pack 1390SP stack pointer 1391SPA storage pool allocator 1392SPARC scalable processor architecture 1393SPARQL SPARQL Protocol and RDF Query Language 1394SPD security policy database 1395SPD serial presence detect 1396SPDIF Sony/Philips digital interface format 1397SPI serial peripheral interface 1398SPI stateful packet inspection 1399SPL system interrupt priority level 1400SPL spinlock 1401SPMD single process, multiple data 1402SPR special purpose register 1403SPT sectors per track 1404SQA software quality assurance 1405SQCIF sub quarter common intermediate format 1406SQL Structured Query Language 1407SRAM static random access memory 1408SRC sample rate conversion 1409SRP SCSI RDMA protocol 1410SS self-snoop 1411SS stack segment 1412SSA static single assignment 1413SSAP source service access point 1414SSB single-sideband modulation 1415SSD solid state drive 1416SSE streaming SIMD extensions 1417SSFDC solid state floppy disc card 1418SSH secure shell 1419SSI server side includes 1420SSID service set identifier 1421SSL secure sockets layer 1422SSP stack smashing protection 1423STC software thermal control 1424STD state transition diagram 1425STOMP Streaming Text Oriented Messaging Protocol 1426STP Spanning Tree Protocol 1427STP shielded twisted pair 1428SUN Stanford University Network 1429SUS Single Unix Specification 1430SUT system under test 1431SVG scalable vector graphics 1432SVGA Super Video Graphics Array 1433SVI {switch,switched} virtual interface 1434SVM secure virtual machine 1435SVM support vector machine 1436SVR System V Release 1437SVS Separate Virtual Space 1438SWF Shockwave Flash 1439SWIG simplified wrapper [and] interface generator 1440SYR symbol timing recovery 1441TA test assertion 1442TA transmitter address 1443TAI international atomic time 1444TAO track at once 1445TAOCP The Art of Computer Programming 1446TAP Test Anything Protocol 1447TAS test and set 1448TB terabyte 1449TBNF transitional backus-naur form 1450TCB trace capture buffer 1451TCB trusted computing base 1452TCC thermal control circuit 1453TCL tool command language 1454TCP Transmission Control Protocol 1455TCQ tagged command queueing 1456TDC time [to] digital converter 1457TDD test-driven development 1458TDD time division duplex 1459TDM time division multiplexing 1460TDMA time division multiple access 1461TDOA time difference of arrival 1462TDP thermal design {point,power} 1463TECO Text Editor and Corrector 1464TFT thin film transistor 1465TFTP Trivial File Transfer Protocol 1466TIAS try it and see 1467TIFF tagged image file format 1468TITS try it to see 1469TK temporal key 1470TKIP Temporal Key Integrity Protocol 1471TLA top level aggregator 1472TLB translation lookaside buffer 1473TLD top level domain 1474TLI transport layer interface 1475TLS thread local storage 1476TLS transport layer security 1477TM Turing machine 1478TM thermal monitor 1479TMDS transition minimized differential signaling 1480TMO timeout 1481TOD time of day 1482TOS terms of service 1483TOS trusted operating system 1484TOS type of service 1485TP transaction processing 1486TPI tracks per inch 1487TPM transactions per minute 1488TPM trusted platform module 1489TPR task priority register 1490TPS transactions per second 1491TPS transmission parameters signaling 1492TR task register 1493TR token ring 1494TRL timing recovery loop 1495TRNG true random number generator 1496TS terminal services 1497TS time series 1498TS time stamp 1499TS transport stream 1500TSAN Thread Sanitizer 1501TSC time stamp counter 1502TSD time stamp disable 1503TSDB time series database 1504TSL test, set, lock 1505TSO time sharing option 1506TSO Total Store Ordering 1507TSP Time-Stamp Protocol 1508TSP Tunnel Setup Protocol 1509TSP time synchronization protocol 1510TSP traveling salesman problem 1511TSS task state segment 1512TTL time to live 1513TTL transistor-transistor logic 1514TTM translation table maps 1515TTY teletype 1516TUI {terminal,text-based,textual} user interface 1517TX {transmit out,transmitter} 1518TXG transaction group 1519TZ time zone 1520UAC user {access,account} control 1521UAF use-after-free 1522UART universal asynchronous receiver/transmitter 1523UAT user acceptance testing 1524UB undefined behavior 1525UBSAN Undefined Behavior Sanitizer 1526UC uncacheable 1527UCS uniform-cost search 1528UDMA ultra DMA 1529UDO ultra density optical 1530UDP User Datagram Protocol 1531UEFI unified extensible firmware interface 1532UFS Unix File System 1533UGA universal graphics adapter 1534UI unit interval 1535UI user interface 1536UICC universal integrated circuit card 1537UID unique identifier 1538UID user identifier 1539UL upload 1540UMA uniform memory access 1541UMA upper memory area 1542UMB upper memory block 1543UML unified modeling language 1544UMPC ultra-mobile PC 1545UPNP universal plug and play 1546UPS uninterruptible power supply 1547URI uniform resource identifier 1548URL uniform resource locator 1549URN uniform resource name 1550USART universal synchronous/asynchronous receiver/transmitter 1551USB universal serial bus 1552USWC uncacheable speculative write combining 1553UT unit test 1554UTC coordinated universal time 1555UTP unshielded twisted pair 1556UUCP Unix-to-Unix Copy Protocol 1557UUID universally unique identifier 1558UUOC useless use of cat 1559UUT unit under test 1560UX user experience 1561VA vertical alignment 1562VA virtual address 1563VA volt-ampere 1564VAX virtual address extension 1565VB Visual Basic 1566VCA variable-gain amplifier 1567VCC common collector voltage 1568VCF voltage-controlled filter 1569VCM virtual channel memory 1570VCO voltage-controlled oscillator 1571VCS version control system 1572VESA Video Electronics Standards Association 1573VFO variable-frequency oscillator 1574VFS virtual file system 1575VG volume group 1576VGA Video Graphics Array 1577VHDCI very high density cable interconnect 1578VID {VLAN,voltage level} identifier 1579VIM Vi IMproved 1580VIPT virtually indexed, physically tagged 1581VIVT virtually indexed, virtually tagged 1582VLAN virtual local area network 1583VLIW very long instruction word 1584VLSI very large scale integration 1585VLSM variable length subnet mask 1586VM virtual {machine,memory} 1587VME virtual mode extension 1588VMX vector multimedia extensions 1589VMX virtual machine extensions 1590VOD video on demand 1591VPD vital product data 1592VPN virtual private network 1593VR virtual reality 1594VRAM video random access memory 1595VRF virtual routing and forwarding 1596VRM voltage regulator module 1597VRRP Virtual Router Redundancy Protocol 1598VSTP VLAN Spanning Tree Protocol 1599VTP VLAN Trunking Protocol 1600VXFS Veritas file sytem 1601VXVM Veritas volume manager 1602W watt 1603W3C World Wide Web Consortium 1604WAFL write anywhere file layout 1605WAMP Web Application Messaging Protocol 1606WAN wide area network 1607WAP Wireless Application Protocol 1608WAP wireless access point 1609WDM Windows Driver Model 1610WDDM Windows Display Driver Model 1611WDT watchdog timer 1612WEP Wired Equivalent Privacy 1613WFI wait for interrupt 1614WFQ weighted fair queuing 1615WH write hit 1616WIFI wireless fidelity 1617WLAN wireless local area network 1618WM write miss 1619WMI Windows Management Instrumentation 1620WOL Wake-on-LAN 1621WOM Wake-on-Modem 1622WOR Wake-on-Ring 1623WORM write once read many 1624WP WordPerfect 1625WP word processor 1626WP write protect 1627WPA Wi-Fi Protected Access 1628WPA2 Wi-Fi Protected Access II 1629WPS Wi-Fi Protected Setup 1630WRAM window random access memory 1631WS web services 1632WTC write through caching 1633WWAN wireless wide area network 1634WWW world wide web 1635WYSIAYG what you see is all you get 1636WYSIWYG what you see is what you get 1637XBAR crossbar 1638XDMCP X Display Manager control protocol 1639XER XML encoding rules 1640XGA Extended Graphics Array 1641XHR XMLHttpRequest 1642XIP execute in place 1643XML Extensible Markup Language 1644XNA XNA's not acronymed 1645XNS Xerox network systems 1646XOR exclusive or 1647XP extreme programming 1648XSI X/Open System Interface 1649XSL extensible stylesheet language 1650XSS cross site scripting 1651XT extended technology 1652XTI X/Open transport interface 1653XUL XML user interface language 1654YACC yet another compiler compiler 1655YAML YAML ain't markup language 1656YANG yet another next generation 1657YAWPFAPR you are welcome; please file a problem report 1658YP Yellow Pages 1659YTD year to date 1660ZAP ZFS attribute processor 1661ZBR zone bit recording 1662ZFOD zero-filled on demand 1663ZFS zettabyte file system 1664ZIF zero insertion force 1665ZIFS zero insertion force socket 1666ZIL ZFS intent log 1667ZMA zone multicast address 1668ZPL ZFS Posix layer 1669ZVOL ZFS Volume 1670