acronyms.comp revision 1.179
1$NetBSD: acronyms.comp,v 1.179 2017/03/24 12:49:43 ginsbach 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 8ABR available bit rate 9AC alternating current 10ACI adjacent channel interferer 11ACID atomicity, consistency, isolation, durability 12ACK Amsterdam compiler kit 13ACK acknowledgement 14ACL access control list 15ACL active current loop 16ACP auxillary control {process,program} 17ACPI advanced configuration and power interface 18ACS access control set 19ACU automatic calling unit 20ADB Apple desktop bus 21ADC analog [to] digital converter 22ADD acronym driven development 23ADO active data objects 24ADP automatic data processing 25ADPCM adaptive differential pulse code modulation 26ADS alternate data stream 27ADSL asymmetric digital subscriber line 28ADT abstract data type 29AES Advanced Encryption Standard 30AFS Andrew File System 31AGC automatic gain control 32AGP accelerated graphics port 33AI analog input 34AI artificial intelligence 35AL access list 36AL active link 37ALE address latch enable 38ALS ambient light sensor 39ALU arithmetic and logical unit 40ALUA asymmetric logical unit access 41AM access method 42AM alignment mask 43AM amplitude modulation 44AMI alternate mark inversion 45AMP asymmetric multiprocessing 46AMQP advanced message queuing protocol 47AMT active management technology 48AN Arabic number 49ANSI American National Standards Institute 50AO analog output 51AOL Alert-on-LAN 52AOS add or subtract 53AP access point 54AP application processor 55API application programming interface 56APIC advanced programmable interrupt controller 57APIPA automatic private IP addressing 58APT advanced persistent threat 59AQM active queue management 60ARAT always running APIC timer 61ARC adaptive replacement cache 62ARM Advanced RISC Machines 63ARP Address Resolution Protocol 64ARPA Advanced Research Projects Agency 65ARQ automatic repeat request 66ARR address range register 67ARU audio response unit 68AS autonomous system 69ASC advanced smart cache 70ASCII American Standard Code for Information Interchange 71ASD agile software development 72ASE advanced software environment 73ASIC application-specific integrated circuit 74ASK amplitude shif keying 75ASLR address space layout randomization 76ASN autonomous system number 77ASPM active state power management 78ASQ automated software quality 79ASR address space register 80AST abstract syntax tree 81AST asynchronous trap 82AT access time 83AT advanced technology 84ATA advanced technology attachment 85ATAPI advanced technology attachment packet interface 86ATC address translation cache 87ATM asynchronous transfer mode 88ATX advanced technology extended 89AV anti virus 90AVL Adelson-Velsky-Landis 91AVX advanced vector extensions 92BA byte align 93BAL basic assembly language 94BAR base address register 95BBS bulletin board system 96BCC blind carbon copy 97BCD binary coded decimal 98BCR byte count register 99BCS base configuration space 100BD baud 101BDD binary decision diagram 102BDI bit deinterleave 103BDUF big design up front 104BEDO burst extended data output 105BER basic encoding rules 106BER bit error {rate,ratio} 107BFD binary {file,format} descriptor 108BFKL big fscking kernel lock 109BFS breadth-first search 110BFT binary file transfer 111BGA ball grid array 112BGP Border Gateway Protocol 113BGPSEC BGP Security 114BIND Berkeley Internet Name Daemon 115BIOS Basic Input/Output System 116BIOS built-in operating system 117BIST built-in self-test 118BIU bus interface unit 119BKDG BIOS and kernel developer's guide 120BLAS basic linear algebra subprograms 121BLC back light control 122BLOB binary large object 123BM bus master 124BMC baseboard management controller 125BMIC bus master interface controller 126BN boundary neutral 127BNF Backus-Naur form 128BO binary output 129BOF beginning of file 130BOM beginning of message 131BOM byte order mark 132BP base pointer 133BP boot processor 134BPB BIOS parameter block 135BPDU bridge protocol data unit 136BPF Berkeley Packet Filter 137BPI bits per inch 138BPM business process modelling 139BPS bits per second 140BPSK binary phase shift keying 141BQS Berkeley quality software 142BRE basic regular expression 143BS backspace 144BS binary sequence 145BSA basic service area 146BSD Berkeley Software Distribution 147BSF bit scan forward 148BSOD blue screen of death 149BSP binary space partition 150BSP bootstrap processor 151BSR bit scan reverse 152BSS basic service set 153BSS block started by symbol 154BSSID basic service set identifier 155BT BitTorrent 156BT Bluetooth 157BT bit test 158BTC bit test [and] complement 159BTR bit test [and] reset 160BTS bit test [and] set 161BTS bug tracking system 162BW bandwidth 163BWM block-write mode 164CA certificate authority 165CAD computer-aided design 166CAM computer assisted manufacturing 167CAM conditional access module 168CAM content addressable memory 169CARP Common Address Redundancy Protocol 170CAS column address strobe 171CAS compare and swap 172CAS computer algebra system 173CASE computer aided software engineering 174CAU control access unit 175CAV constant angular velocity 176CBC cipher block chaining 177CBR constant bit rate 178CC carbon coby 179CCD charge coupled device 180CCI co-channel interferer 181CD cache disable 182CD compact disc 183CDDA compact disc digital audio 184CDMA code division multiple access 185CDP Cisco Discovery Protocol 186CDRAM cache dynamic random access memory 187CER canonical encoding rules 188CF compact flash 189CFB cipher feedback 190CFG context-free grammar 191CFG control-flow graph 192CG control gate 193CGA Color Graphics Adapter 194CGI common gateway interface 195CGN Carrier-Grade NAT 196CHAP Challenge-Handshake Authentication Protocol 197CHS cylinder/head/sector 198CI continuous integration 199CI {common,component} interface 200CIDR Classless Inter-Domain Routing 201CIFS Common Internet File System 202CIL common intermediate language 203CIR carrier-to-interference ratio 204CIS contact image sensor 205CISC complex instruction set {computer,computing} 206CJK Chinese, Japanese, [and] Korean 207CLF common log format 208CLI command line interface 209CLR common language runtime 210CLTT closed loop thermal throttling 211CLUT color look-up table 212CLV constant linear velocity 213CM configuration management 214CMA concert multithread architecture 215CMI control management interface 216CMI control method interface 217CMOS complementary metal-oxide-semiconductor 218CMP chip multi-processing 219CMS content management system 220CMYK cyan magenta yellow black 221CN {common,canonical} name 222CNC computer numerical control 223CNR carrier-to-noise ratio 224COF current operating frequency 225COFDM coded orthogonal frequency division multiplexing 226COFF common object file format 227COM component object model 228COMA cache-only memory architecture 229CORBA common object request broker architecture 230COW copy-on-write 231CP continuous pilot 232CPB core performance boost 233CPE common phase error 234CPG clock pulse generator 235CPL current privilege level 236CPLD complex programmable logic device 237CPP C preprocessor 238CPS characters per second 239CPT command pass through 240CPU central processing unit 241CR carriage return 242CRC cyclic redundancy check 243CRL carrier recovery loop 244CRLF carriage return line feed 245CRT cathode ray tube 246CS cable select 247CS chip select 248CS code segment 249CS computer science 250CSI channel state information 251CSI common system interface 252CSMA carrier sense multiple access 253CSMA/CA carrier sense multiple access with collision avoidance 254CSMA/CD carrier sense multiple access with collision detection 255CSR control [and] status registers 256CSRG Computer Systems Research Group 257CSS cascading style sheets 258CSV comma-separated values 259CTM close to metal 260CTR counter [mode] 261CTS clear to send 262CUA common user access 263CUT coordinated universal time 264CV control voltage 265CVE common vulnerabilities and exposures 266CVS Concurrent Versions System 267DA destination address 268DAA distributed application architecture 269DAB digital audio broadcasting 270DAC digital [to] analog converter 271DAC discretionary access control 272DAD duplicate address detection 273DANE DNS-based Authentication of Named Entities 274DAO disk at once 275DAP Directory Access Protocol 276DAT digital audio tape 277DAT dynamic acceleration technology 278DB database 279DBA database administrator 280DBA dynamic bandwidth allocation 281DBB data bus buffer 282DBC design by contract 283DBL dynamic buffer limiting 284DBMS database management system 285DBS database server 286DC direct current 287DCC Direct Client-to-Client 288DCC direct cable connect 289DCD data carrier detect 290DCE data control equipment 291DCE distributed computing environment 292DCOM distributed component object model 293DCOP Desktop COmmunication Protocol 294DCS data collection systems 295DCT discrete cosine transform 296DCU data cache unit 297DDC display data channel 298DDE dynamic data exchange 299DDK device driver kit 300DDL data description language 301DDR double data rate 302DDS direct digital sound 303DDWG Digital Display Working Group 304DE debugging extensions 305DE desktop environment 306DEA data encryption algorithm 307DEK data encryption key 308DEP data execution prevention 309DER distinguished encoding rules 310DES Data Encryption Standard 311DF don't fragment 312DFA deterministic finite automaton 313DFC data flow control 314DFS depth first search 315DFS distributed file system 316DFT diagnostic function test 317DFT discrete Fourier transform 318DGL data generation language 319DH Diffie-Hellman 320DHCP Dynamic Host Configuration Protocol 321DIFS distributed inter-frame space 322DIMM dual inline memory module 323DIRT design in real time 324DL diode logic 325DL discrete logarithm 326DL download 327DLE data link escape 328DLL dynamic link library 329DLP discrete logarithm problem 330DMA direct memory access 331DMI desktop management interface 332DMS document management system 333DMT discrete multitone modulation 334DNARD Digital network appliance reference design 335DND drag and drop 336DNS Domain Name System 337DNSSEC DNS Security Extensions 338DOE distributed object environment 339DOF data over fibre 340DOM document object model 341DOS denial of service 342DOS disk operating system 343DP DisplayPort 344DPC deferred procedure call 345DPCM differential pulse code modulation 346DPD dead peer detection 347DPI deep packet inspection 348DPI dots per inch 349DPL descriptor privilege level 350DPS Display PostScript 351DPST display power savings technology 352DRAM dynamic random access memory 353DRBG deterministic random bit generator 354DRI direct rendering infrastructure 355DRM digital rights management 356DRRS display refresh rate switching 357DS debug store 358DSA digital signature algorithm 359DSAP destination service access point 360DSB double-sideband modulation 361DSDT differentiated system descriptor table 362DSL digital subscriber line 363DSL domain specific language 364DSLAM digital subscriber line access multiplexer 365DSN delivery status notification 366DSO dynamic shared object 367DSP digital signal processor 368DSSS direct sequence spread spectrum 369DTD document type definition 370DTE data terminal equipment 371DTE dumb terminal emulator 372DTL diode-transistor logic 373DTLS datagram transport layer security 374DTS digital thermal sensor 375DUT device under test 376DVB digital video broadcasting 377DVCS distributed version control system 378DVD digital versatile disc 379DVFS dynamic voltage and frequency scaling 380DVI device independent 381DVI Digital Visual Interface 382DVR digital video recorder 383E-XER extended XML encoding rules 384EABI embedded-application binary interface 385EAI Email Address Internationalization 386EAI Enterprise Application Integration 387EAP Extensible Authentication Protocol 388EAPOL EAP over Lan 389EBCDIC Extended Binary Coded Decimal Interchange Code 390EBR extended boot record 391EC elliptic curve 392ECC elliptic curve cryptography 393ECC error correction code 394ECDH elliptic curve Diffie-Hellman 395ECDL elliptic curve discrete logarithm 396ECDLP elliptic curve discrete logarithm problem 397ECDSA elliptic curve digital signature algorithm 398ECL emitter-coupled logic 399ECN explicit congestion notification 400ECP enhanced capability port 401ECS enhanced chip set 402ECS extended configuration space 403EDAT enhanced dynamic acceleration technology 404EdDSA Edwards curve digital signature algorithm 405EDGE explicit data graph execution 406EDID extended display identification data 407EDO extended data out 408EDS electronical data sheet 409EEPROM electrically erasable programmable read only memory 410EFI extensible firmware interface 411EFL emitter follower logic 412EFM eight to fourteen modulation 413EGA Enhanced Graphics Adapter 414EGP exterior gateway protocol 415EH extension header 416EIDE enhanced IDE 417EISA extended industry standard architecture 418ELF executable and linking format 419ELS entry level system 420EMI electro-magnetic interference 421EMP electro-magnetic pulse 422EMR electro-magnetic radiation 423EOF end of file 424EOI end of interrupt 425EOL end of line 426EOT end of transmission 427EPIC explicitly parallel instruction computing 428EPP enhanced parallel port 429EPRML extended partial response, maximum likelihood 430EPROM erasable programmable read only memory 431ERD emergency recovery disk 432ERD entity relationship diagram 433ERE extended regular expression 434ESDRAM enhanced synchronous dynamic random access memory 435ESS electronic switching system 436ESS extended service set 437ESSID extended service set identifier 438EST enhanced speedstep 439ETL extract, transform, load 440EU execution unit 441EULA end user license agreement 442FAT file allocation table 443FBRAM frame buffer random access memory 444FCL fiber channel loop 445FCS frame check sequence 446FDC floppy disk controller 447FDD floppy disk drive 448FDDI fiber distributed data interface 449FDE full disk encryption 450FEA finite element analysis 451FEC forward error correction 452FET field-effect transistor 453FF finite field 454FF form feed 455FFDH finite-field Diffie-Hellman 456FFH functional fixed hardware 457FFI foreign function interface 458FFM focus follows mouse 459FFS Fast File System 460FFS find first set 461FFT fast Fourier transform 462FG floating gate 463FHSS frequency hop spread spectrum 464FID frequency identifier 465FIFO first in, first out 466FILO first in, last out 467FIPS Federal Information Processing Standards 468FIR fast infrared 469FLOPS floating [point] operations per second 470FLOSS free/libre/open source software 471FM frequency modulation 472FMR false match rate 473FOSS free/open source software 474FPGA field programmable gate array 475FPM fast page mode 476FPR floating point register 477FPU floating point unit 478FQDN fully qualified domain name 479FRR false rejection rate 480FRU field replaceable unit 481FS file system 482FSB front side bus 483FSCK file system check 484FSF Free Software Foundation 485FSK frequency shift keying 486FSM finite-state machine 487FTA fault tree analysis 488FTL flash translation layer 489FTP File Transfer Protocol 490FTPS File Transfer Protocol Secure 491FUS fast user switching 492FWH firmware hub 493FWS folding white space 494GAL generic array logic 495GAS generic address structure 496GC garbage collector 497GCM Galois counter mode 498GCR group-coded recording 499GDT global descriptor table 500GEM graphics environment manager 501GEM graphics execution manager 502GENA general event notification architecture 503GHC Glasgow Haskell compiler 504GID group identifier 505GIF graphics interchange format 506GMCH graphics and memory controller hub 507GNU GNU's Not Unix 508GOP graphics output protocol 509GOT global offset table 510GPE general purpose event 511GPF general protection fault 512GPG GNU Privacy Guard 513GPL [GNU] General Public License 514GPR general purpose register 515GPS generalized processor sharing 516GPT GUID partition table 517GPU graphics processing unit 518GR golden ratio 519GRE generic routing encapsulation 520GSI global system interrupt 521GUI graphical user interface 522GUID globally unique identifier 523HA high availability 524HAL hardware abstraction layer 525HAT hashed array tree 526HBA host bus adapter 527HCF halt and catch fire 528HCI host controller interface 529HCI human-computer interaction 530HCL hardware compatibility list 531HDCP High-bandwidth Digital Content Protection 532HDD hard disk drive 533HDL hardware description language 534HDMI High-Definition Multimedia Interface 535HDTV high-definition television 536HF high frequency 537HFM highest frequency mode 538HID human interface device 539HLL high-level language 540HMA high memory area 541HMI human-machine interface 542HOOD hierarchical object oriented design 543HP Hewlett-Packard 544HPC high performance computing 545HPET high precision event timer 546HSM hardware security module 547HSM hierarchical storage management 548HT hyper-threading 549HTC hardware thermal control 550HTCC high temperature co-fired ceramic 551HTML HyperText Markup Language 552HTT hyper-threading technology 553HTTP Hypertext Transfer Protocol 554HTTPS Hypertext Transfer Protocol Secure 555HVM hardware virtual machine 556HZ Hertz 557I2O intelligent input/output 558IA information assurance 559IANA Internet Assigned Numbers Authority 560IBC iterated block cipher 561IBM International Business Machines 562IBS instruction based sampling 563IBSS independent basic service set 564IC integrated circuit 565ICA independent computer architecture 566ICB Internet Citizen's Band 567ICE in-circuit emulator 568ICE internal compiler error 569ICH I/O controller hub 570ICMP Internet Control Message Protocol 571ICT information and communications technology 572ICW initialization command word 573IDA Intel dynamic acceleration 574IDCMP Intuition direct communication message port 575IDE integrated development environment 576IDE integrated drive electronics 577IDPS intrusion detection [and] prevention system 578IDRP inter-domain routing protocol 579IDS intrusion detection system 580IDT interrupt descriptor table 581IE Internet Explorer 582IEC International Electrotechnical Commission 583IEEE Institute of Electrical and Electronics Engineers 584IESG Internet Engineering Steering Group 585IETF Internet Engineering Task Force 586IF intermediate frequency 587IFCM isochronous flow control mode 588IFF Interchange File Format 589IGD Internet gateway device 590IGMP Internet Group Management Protocol 591IGP interior gateway protocol 592IHV independent hardware vendor 593IKE Internet key exchange 594ILM internal loopback mode 595ILOM integrated lights-out management 596ILP instruction level parallelism 597IM instant messaging 598IMAP Internet Message Access Protocol 599IMC integrated memory controller 600IMCR interrupt mode configuration register 601IMR interrupt mask register 602IMS information management system 603INCITS InterNational Committee for Information Technology Standards 604IO input/output 605IOCTL input/output control 606IOMMU input/output memory management unit 607IOT Internet of Things 608IP Internet Protocol 609IP intellectual property 610IPC interprocess communication 611IPE integrated programming environment 612IPI interprocessor interrupt 613IPNG Internet Protocol, Next Generation 614IPS in-plane switching 615IPS intrusion prevention system 616IPSEC Internet Protocol Security 617IRC Internet Relay Chat 618IRDA infrared data association 619IRQ interrupt request 620IRQL interrupt request level 621IRR interrupt request register 622IRTF Internet Research Task Force 623IS information system 624ISA industry standard architecture 625ISA instruction set architecture 626ISDN integrated services digital network 627ISI inter-symbol interference 628ISM industrial, scientific, [and] medical 629ISN initial serial number 630ISO International Standards Organization 631ISOC Internet Society 632ISP Internet service provider 633ISR in-service register 634ISR interrupt service routine 635IST interrupt stack table 636ISV independent software vendor 637IT information technology 638ITB Intel Turbo Boost 639ITIL information technology infrastructure library 640ITSM IT service management 641IV initialization vector 642IVT interrupt vector table 643JBOD just a bunch of disks 644JFET junction [gate] field-effect transistor 645JIT just in time 646JPEG Joint Photographic Experts Group 647JRE Java Runtime Environment 648JTAG joint test action group 649KB keyboard 650KB kilobyte 651KBD keyboard 652KBD kilobaud 653KLOC thousand lines of code 654KMS kernel-mode setting 655KPI kernel programming interface 656KVA kernel virtual address 657KVM kernel virtual machine 658KVM kernel virtual memory 659KVM keyboard, video, [and] mouse 660LAMP Linux Apache MySQL {Perl,PHP,Python} 661LAN local area network 662LAPIC local advanced programmable interrupt controller 663LAR load access rights 664LBA logical block addressing 665LBS location-based service 666LCD liquid crystal display 667LCP link control protocol 668LDA local delivery agent 669LDAP Lightweight Directory Access Protocol 670LDR light-dependent resistor 671LDT local descriptor table 672LE logical extent 673LED light emitting diode 674LER label edge router 675LF line feed 676LF low frequency 677LFM lowest frequency mode 678LFN long file names 679LFO low-frequency oscillation 680LFS log-structured file system 681LFU least frequently used 682LHP loop heat pipe 683LIFO last in, first out 684LILO LInux LOader 685LILO last in, last out 686LINT local interrupt 687LIR local Internet registry 688LKM {Linux,loadable} kernel module 689LKML Linux kernel mailing list 690LL load linked 691LL/SC load linked/store conditional 692LLC logical link control 693LLDP link layer discovery protocol 694LLF low level format 695LLMNR link-local multicast name resolution 696LLVM Low Level Virtual Machine 697LM long mode 698LMM link management mode 699LNO loop nest optimization 700LOC lines of code 701LOM lights-out management 702LPC low pin count 703LPS local positioning system 704LRC longitudinal redundancy check 705LRM left-to-right mark 706LRO left-to-right override 707LRU least recently used 708LSB Linux standards base 709LSB least significant {bit,byte} 710LSI large scale integration 711LSL load segment limit 712LSN Large Scale NAT 713LSN log sequence number 714LSR label switch router 715LTCC low temperature co-fired ceramic 716LTO link time optimization 717LTR left to right 718LTR load task register 719LTR letter(-sized paper) 720LTS long term support 721LUA Lua Uppercase Accident 722LUN logical unit number 723LV logical volume 724LVM logical volume management 725LVT local vector table 726LWP light-weight process 727LZW Lempel Ziv Welch 728MAC mandatory access control 729MAC {media,medium} access control 730MAC message authentication {check,code} 731MADT multiple APIC descriptor table 732MB megabyte 733MBA multi-boot agent 734MBR master boot record 735MBS megabits per second 736MC memory controller 737MCA machine check architecture 738MCA MicroChannel architecture 739MCC multiversion concurrency control 740MCE machine check exception 741MCGA Multi-Color Graphics Array 742MCH memory controller hub 743MCM multi-chip module 744MCQ memory controlled queue 745MD machine-dependent 746MDA mail delivery agent 747MDA Monochrome Display Adapter 748MDRAM multibank dynamic random access memory 749MESI modified, exclusive, shared, invalid 750MFC merge from current 751MFC Microsoft Foundation Classes 752MFM modified frequency modulation 753MI machine-independent 754MIB management information base 755MIC message integrity {check,code} 756MID mobile Internet device 757MIDI musical instrument digital interface 758MIF management information format 759MIM man in the middle 760MIMD multiple instruction, multiple data 761MIME Multipurpose Internet Mail Extensions 762MIMO multiple input multiple output 763MIPS million instructions per second 764MISD multiple instruction, single data 765MIT Massachusetts Institute of Technology 766MITM man in the middle 767ML machine language 768ML machine learning 769ML mailing list 770ML markup language 771ML maximum likelihood 772MLC multi-level cell 773MLD multicast listener discovery 774MLHP micro loop heat pipe 775MMF multi-mode fiber 776MMIC monolithic microwave integrated circuit 777MMIO memory mapped input/output 778MMORPG massive multiplayer online role playing game 779MMU memory management unit 780MMX matrix math extension 781MMX multimedia extension 782MMX multiple math extension 783MO magneto-optical 784MOESI modified, owned, exclusive, shared, invalid 785MOF maximum operating frequency 786MOSFET metal-oxide-semiconductor field-effect transistor 787MOSI modified, owned, shared, invalid 788MP multi-platform 789MP multiplayer 790MP {multiprocessing,multiprocessor} 791MPEG moving picture experts group 792MPI message passing interface 793MPLS Multiprotocol Label Switching 794MPP massively parallel processor 795MPS memory pool system 796MPS multiprocessor specification 797MR modem ready 798MRU most recently used 799MS Microsoft 800MSB most significant {bit,byte} 801MSE mean square error 802MSF minutes seconds frames 803MSI message signaled interrupt 804MSI modified, shared, invalid 805MSR machine state register 806MSS maximum segment size 807MSTP Multiple Spanning Tree Protocol 808MT machine translation 809MTA mail transfer agent 810MTBF mean time between failures 811MTP media transfer protocol 812MTRR memory type range register 813MTTF mean time to failure 814MTU maximum transmission unit 815MUA mail user agent 816MUD multi-user domain 817MVCC multiversion concurrency control 818MWE module width encoding 819MX mail exchange 820NACK negative acknowledgement 821NAN not a number 822NAPT Network Address Port Translation 823NAS network attached storage 824NAT network address translation 825NAV network allocation vector 826NC numerical control 827NCO numerically-controlled oscillator 828NCP Network Control Protocol 829NCQ native command queuing 830ND neighbor discovery 831NDFA nondeterministic finite automaton 832NE numeric error 833NFA nondeterministic finite automaton 834NFC near-field communication 835NFCI no functional change intended 836NFS network file system 837NIA next instruction address 838NIC network information center 839NIC network interface card 840NIDS network intrusion detection system 841NIP network interface protocol 842NIPS network intrusion prevention system 843NIS network information service 844NIST National Institute of Standards and Technology 845NLS native language support 846NMI non-maskable interrupt 847NNTP Network News Transfer Protocol 848NOC network operations center 849NOP no operation 850NOS network operating system 851NP nondeterministic polynomial time 852NRZ non-return to zero 853NSA nation-state adversary 854NSA no such agency 855NSA National Security Agency 856NTM non-deterministic Turing machine 857NTP Network Time Protocol 858NUMA non-uniform memory access 859NVRAM non-volatile random access memory 860NW not write-through 861NX no execute 862OAEP optimal asymmetric encryption padding 863OBO off by one 864OBOE off by one error 865OCL object constraint language 866OCR optical character recognition 867ODCM on-demand clock modulation 868ODT on-die termination 869OEM original equipment manufacturer 870OFB output feedback 871OFDM orthogonal frequency division multiplexing 872OFET organic field-effect transistor 873OLAP online analytical processing 874OLE object linking and embedding 875OLTP online transaction processing 876ONFI open nand flash interface 877OO OpenOffice 878OO object oriented 879OOB out of band 880OOE out of order execution 881OOM out of memory 882OOO OpenOffice.org 883OOP object oriented programming 884OOPS object oriented programming systems 885OOSE object oriented software engineering 886OPM operations per minute 887OPS operations per second 888OQL Object Query Language 889ORB object request broker 890ORM object-relational mapping 891OS operating system 892OSD open source definition 893OSF open software foundation 894OSI Open Source Initiative 895OSI open systems interconnection 896OSPF open shortest path first 897OSPM OS power management 898OSS open sound system 899OSS open source software 900OSVW operating system visible workarounds 901OTP one time password 902OTP open telecom platform 903OU organizational unit 904OUI organizationally unique identifier 905OWL Web Ontology Language 906P2P PCI to PCI 907P2P peer to peer 908PA phase accumulator 909PA physical address 910PAC phase-amplitude converter 911PAE physical address extension 912PAL phase alternating line 913PAL programmable array logic 914PAM pluggable authentication modules 915PAM pulse amplitude modulation 916PAP password authentication protocol 917PAT page attribute table 918PAT port address translation 919PATA parallel ATA 920PAX portable archive exchange 921PBE pending break encoding 922PBE programming by example 923PC personal computer 924PC program counter 925PCB printed circuit board 926PCB process control block 927PCC Portable C Compiler 928PCD page-level cache disable 929PCE performance-monitor counter enable 930PCI peripheral component interconnect 931PCM phase change memory 932PCM pulse code modulation 933PCMCIA Personal Computer Memory Card International Association 934PCP Port Control Protocol 935PD public domain 936PDA personal digital assistant 937PDA pushdown automaton 938PDAG propositional directed acyclic graph 939PDB power distribution board 940PDF portable document format 941PDM pulse-duration modulation 942PDN pull-down network 943PDP page {descriptor,directory} page 944PDS product data sheet 945PDU protocol data unit 946PE protection enable 947PEAP Protected EAP 948PECI platform environment control interface 949PEP protocol extension protocol 950PER packed encoding rules 951PFS perfect forward secrecy 952PGAS partitioned global address space 953PGE page global enable 954PGP Pretty Good Privacy 955PHB PCI host bridge 956PHP PHP: Hypertext Preprocessor 957PIC position independent code 958PIC programmable interrupt controller 959PICNIC problem in chair, not in computer 960PID process id 961PIE position independent executable 962PIM personal information manager 963PIM platform-independent model 964PIO programmed input/output 965PIPT physically indexed, physically tagged 966PIQ prefetch input queue 967PIT programmable interrupt timer 968PIV personal identity verification 969PKCS public-key cryptography standards 970PKI public key infrastructure 971PLC programmable logic controller 972PLD programmable logic device 973PLL phase locked loop 974PLRU pseudo LRU 975PLTM package level thermal management 976PM power management 977PM {phase,pulse} modulation 978PME power management event 979PMI platform management interrupt 980PMIO port-mapped input/output 981PMT photo-multiplier tube 982PMU power management unit 983PNG portable network graphics 984PNP plug and play 985POE power over ethernet 986POF probability of failure 987POP Post Office Protocol 988POP power on password 989POSIX Portable Operating System Interface [for Unix] 990POST power on self test 991POTS plain old telephone system 992PP pair programming 993PPB PCI [to] PCI bridge 994PPC PowerPC 995PPI pixels per inch 996PPM pages per minute 997PPP Point-to-Point Protocol 998PPPOA Point-to-Point Protocol over ATM 999PPPOE Point-to-Point Protocol over Ethernet 1000PPU physics processing unit 1001PRBS pseudorandom bit sequence 1002PRG pseudorandom generator 1003PRF pseudorandom function [family] 1004PRML partial response, maximum likelihood 1005PRN pseudorandom {noise,number} 1006PRNG pseudorandom number generator 1007PROM programmable read only memory 1008PRP pseudorandom permutation 1009PSD power spectral density 1010PSE page size extensions 1011PSK phase shift keying 1012PSK pre-shared key 1013PSTN public switched telephone network 1014PSW program status word 1015PTE page table entry 1016PTLA pseudo top level aggregator 1017PTP page table page 1018PTV perceived target value 1019PU processing unit 1020PUN physical unit number 1021PV physical volume 1022PVG physical volume group 1023PVI protected-mode virtual interrupt 1024PVST Per-VLAN Spanning Tree 1025PWM pulse width modulation 1026PXE preboot execution environment 1027QA quality assurance 1028QAM quadrature amplitude modulation 1029QAM quality assurance management 1030QBE query by example 1031QC quality control 1032QDI quasi delay insensitive 1033QOS quality of service 1034QVL qualified vendor list 1035R/O read only 1036R/W read/write 1037RA receiver address 1038RA remote assistance 1039RA resource affinity 1040RA router advertisement 1041RAD rapid application development 1042RAID redundant array of {independent,inexpensive} disks 1043RAM random access memory 1044RAS reliability, availability and serviceability 1045RAS remote access service 1046RAS restartable atomic sequence 1047RAS row address strobe 1048RBF radial basis function 1049RBT red-black tree 1050RC release candidate 1051RC remote control 1052RCS Revision Control System 1053RCS revision control system 1054RCU read, copy, update 1055RDB Rigid Disk Block 1056RDBMS relational database management system 1057RDF Resource Description Framework 1058RDM relational data model 1059RDMA remote direct memory access 1060RE regular expression 1061REST representational state transfer 1062RF radio frequency 1063RFI radio frequency interference 1064RFO request for ownership 1065RGB red green blue 1066RGBA red green blue alpha 1067RH read hit 1068RHEL Red Hat Enterprise Linux 1069RHL Red Hat Linux 1070RIB routing information base 1071RIFF Resource Interchange File Format 1072RIP Routing Information Protocol 1073RIR regional Internet registry 1074RISC reduced instruction set {computer,computing} 1075RKM ROM Kernel Manual 1076RLE run length encoding 1077RLL run length limited 1078RLO right-to-left override 1079RM read miss 1080RMI remote method invocation 1081RMPM rapid memory power management 1082RMS root mean square 1083RMW read, modify, write 1084RNG random number generator 1085ROM read only memory 1086RPC remote procedure call 1087RPKI resource PKI 1088RPL requested privilege level 1089RPM revolutions per minute 1090RPN reverse Polish notation 1091RPVST Rapid Per-VLAN Spanning Tree 1092RR random replacement 1093RR round robin 1094RS relay station 1095RSA Rivest, Shamir, [and] Adleman 1096RSIP Realm Specific IP 1097RSN Robust Secure Network 1098RSS really simple syndication 1099RSS residual sum of squares 1100RSTP Rapid Spanning Tree Protocol 1101RT real time 1102RTC real time clock 1103RTC real time computing 1104RTF rich text format 1105RTL register transfer language 1106RTL resistor-transistor logic 1107RTL right to left 1108RTOS real time operating system 1109RTS request to send 1110RTT round trip time 1111RUP rational unified process 1112RW Rabin-Williams 1113RWM read-write memory 1114RX {receive,receiver} 1115S/PDIF Sony/Philips Digital Interface Format 1116SA security advisory 1117SA security association 1118SA source address 1119SA structured analysis 1120SAAS software as a service 1121SACD super audio compact disc 1122SAD security association database 1123SAL system abstraction layer 1124SAM serial access memory 1125SAM sum addressed memory 1126SAN storage area network 1127SAP service access point 1128SAPIC streamlined advanced programmable interrupt controller 1129SASD structured analysis, structured design 1130SASI Shugart Associates System Interface 1131SASL simple authentication [and] security layer 1132SATA serial advanced technology attachment 1133SB sound blaster 1134SBU standard build unit 1135SC store conditional 1136SCA source code analyzer 1137SCADA supervisory control and data acquisition 1138SCC single chip cloud 1139SCC source code control 1140SCCS Source Code Control System 1141SCI scalable coherent interface 1142SCI system control interrupt 1143SCM software configuration management 1144SCM source code management 1145SCM storage-class memory 1146SCP secure copy 1147SCSI Small Computer System Interface 1148SCTP Stream Control Transmission Protocol 1149SDI symbol deinterleave 1150SDK software development kit 1151SDL Simple Declarative Language 1152SDL Simple Direct-media Layer 1153SDRAM synchronous dynamic random access memory 1154SDT syntax-directed translation 1155SEGV segmentation violation 1156SEO search engine optimization 1157SFC sequential function chart 1158SFI simple firmware interface 1159SFI software fault isolation 1160SFTP SSH File Transfer Protocol 1161SFTP Serial File Transfer Protocol 1162SFTP Simple File Transfer Protocol 1163SGRAM synchronous graphics random access memory 1164SHA secure hash algorithm 1165SIDH supersingular isogeny Diffie-Hellman 1166SIEM security information and event management 1167SIFS short inter-frame space 1168SIMD single instruction, multiple data 1169SIMM single inline memory module 1170SIP Session Initiation Protocol 1171SIR signal-to-interference ratio 1172SIR slow infrared 1173SISD single instruction, single data 1174SLC single-level cell 1175SLDRAM synchronous-link dynamic random access memory 1176SLED single large expensive disk 1177SLI scalable link interface 1178SLI scan-line interleave 1179SLOC source lines of code 1180SLRU segmented LRU 1181SMA smart memory access 1182SMAF system management action field 1183SMAP Simple Mail Access Protocol 1184SMAP supervisor mode access prevention 1185SMART self-monitoring analysis and reporting technology 1186SMBIOS System Management BIOS 1187SMC system management controller 1188SMF single mode fiber 1189SMI structure of management information 1190SMI system management interrupt 1191SMM system management mode 1192SMP symmetric multiprocessing 1193SMT simultaneous multithreading 1194SMTP Simple Mail Transfer Protocol 1195SMU system management unit 1196SNAP Sub-Network Access Protocol 1197SNMP Simple Network Management Protocol 1198SNR signal-to-noise ratio 1199SOA service oriented architecture 1200SOAP Simple Object Access Protocol 1201SOC system on chip 1202SOF start of frame 1203SOH start of header 1204SOHO small office/home office 1205SOL serial over LAN 1206SP service pack 1207SP stack pointer 1208SPARC scalable processor architecture 1209SPARQL SPARQL Protocol and RDF Query Language 1210SPD security policy database 1211SPD serial presence detect 1212SPDIF Sony/Philips digital interface format 1213SPI serial peripheral interface 1214SPI stateful packet inspection 1215SPMD single process, multiple data 1216SPR special purpose register 1217SPT sectors per track 1218SQA software quality assurance 1219SQL Structured Query Language 1220SRAM static random access memory 1221SRC sample rate conversion 1222SS self-snoop 1223SS stack segment 1224SSA static single assignment 1225SSAP source service access point 1226SSB single-sideband modulation 1227SSD solid state drive 1228SSE streaming SIMD extensions 1229SSFDC solid state floppy disc card 1230SSH secure shell 1231SSI server side includes 1232SSID service set identifier 1233SSL secure sockets layer 1234SSP stack smashing protection 1235STC software thermal control 1236STD state transition diagram 1237STP Spanning Tree Protocol 1238STP shielded twisted pair 1239SUS Single Unix Specification 1240SUT system under test 1241SVG scalable vector graphics 1242SVGA Super Video Graphics Array 1243SVM secure virtual machine 1244SVM support vector machine 1245SVR System V Release 1246SWF Shockwave Flash 1247SWIG simplified wrapper [and] interface generator 1248SYR symbol timing recovery 1249TA test assertion 1250TA transmitter address 1251TAI international atomic time 1252TAO track at once 1253TAOCP The Art of Computer Programming 1254TAP Test Anything Protocol 1255TAS test and set 1256TB terabyte 1257TCB trace capture buffer 1258TCB trusted computing base 1259TCC thermal control circuit 1260TCL tool command language 1261TCP Transmission Control Protocol 1262TCQ tagged command queueing 1263TDC time [to] digital converter 1264TDD test driven development 1265TDD time division duplex 1266TDM time division multiplexing 1267TDMA time division multiple access 1268TDOA time difference of arrival 1269TDP thermal design {point,power} 1270TECO Text Editor and Corrector 1271TFT thin film transistor 1272TFTP Trivial File Transfer Protocol 1273TIAS try it and see 1274TIFF tagged image file format 1275TITS try it to see 1276TK temporal key 1277TKIP Temporal Key Integrity Protocol 1278TLA top level aggregator 1279TLB translation lookaside buffer 1280TLD top level domain 1281TLS thread local storage 1282TLS transport layer security 1283TM Turing machine 1284TM thermal monitor 1285TMDS transition minimized differential signaling 1286TMO timeout 1287TOD time of day 1288TOS terms of service 1289TOS trusted operating system 1290TOS type of service 1291TP transaction processing 1292TPI tracks per inch 1293TPM transactions per minute 1294TPM trusted platform module 1295TPR task priority register 1296TPS transactions per second 1297TPS transmission parameters signaling 1298TR task register 1299TR token ring 1300TRL timing recovery loop 1301TRNG true random number generator 1302TS terminal services 1303TS time series 1304TS time stamp 1305TS transport stream 1306TSC time stamp counter 1307TSD time stamp disable 1308TSL test, set, lock 1309TSO time sharing option 1310TSP Time-Stamp Protocol 1311TSP Tunnel Setup Protocol 1312TSP time synchronization protocol 1313TSP traveling salesman problem 1314TSS task state segment 1315TTL time to live 1316TTL transistor-transistor logic 1317TTM translation table maps 1318TTY teletype 1319TUI {terminal,text-based,textual} user interface 1320TX {transmit out,transmitter} 1321TZ time zone 1322UAC user {access,account} control 1323UAF use-after-free 1324UART universal asynchronous receiver/transmitter 1325UAT user acceptance testing 1326UB undefined behavior 1327UC uncacheable 1328UCS uniform-cost search 1329UDMA ultra DMA 1330UDO ultra density optical 1331UDP User Datagram Protocol 1332UEFI unified extensible firmware interface 1333UFS Unix File System 1334UGA universal graphics adapter 1335UI unit interval 1336UI user interface 1337UID unique identifier 1338UID user identifier 1339UL upload 1340UMA uniform memory access 1341UMA upper memory area 1342UMB upper memory block 1343UML unified modeling language 1344UMPC ultra-mobile PC 1345UPNP universal plug and play 1346UPS uninterruptible power supply 1347URI uniform resource identifier 1348URL uniform resource locator 1349URN uniform resource name 1350USART universal synchronous/asynchronous receiver/transmitter 1351USB universal serial bus 1352USWC uncacheable speculative write combining 1353UT unit test 1354UTC coordinated universal time 1355UTP unshielded twisted pair 1356UUCP Unix-to-Unix Copy Protocol 1357UUID universally unique identifier 1358UUOC useless use of cat 1359UUT unit under test 1360UX user experience 1361VA vertical alignment 1362VA virtual address 1363VA volt-ampere 1364VAX virtual address extension 1365VB Visual Basic 1366VCA variable-gain amplifier 1367VCC common collector voltage 1368VCF voltage-controlled filter 1369VCM virtual channel memory 1370VCO voltage-controlled oscillator 1371VCS version control system 1372VESA Video Electronics Standards Association 1373VFO variable-frequency oscillator 1374VG volume group 1375VGA Video Graphics Array 1376VHDCI very high density cable interconnect 1377VID voltage level identifier 1378VIPT virtually indexed, physically tagged 1379VIVT virtually indexed, virtually tagged 1380VLAN virtual local area network 1381VLIW very long instruction word 1382VLSI very large scale integration 1383VLSM variable length subnet mask 1384VM virtual {machine,memory} 1385VME virtual mode extension 1386VMX vector multimedia extensions 1387VMX virtual machine extensions 1388VOD video on demand 1389VPN virtual private network 1390VR virtual reality 1391VRAM video random access memory 1392VRF virtual routing and forwarding 1393VRM voltage regulator module 1394VRRP Virtual Router Redundancy Protocol 1395VSTP VLAN Spanning Tree Protocol 1396VTP VLAN Trunking Protocol 1397W watt 1398W3C World Wide Web Consortium 1399WAN wide area network 1400WAP Wireless Application Protocol 1401WAP wireless access point 1402WDT watchdog timer 1403WEP Wired Equivalent Privacy 1404WFI wait for interrupt 1405WFQ weighted fair queuing 1406WH write hit 1407WIFI wireless fidelity 1408WLAN wireless local area network 1409WM write miss 1410WMI Windows Management Instrumentation 1411WOL Wake-on-LAN 1412WOM Wake-on-Modem 1413WOR Wake-on-Ring 1414WORM write once read many 1415WP WordPerfect 1416WP word processor 1417WP write protect 1418WPA Wi-Fi Protected Access 1419WPA2 Wi-Fi Protected Access II 1420WPS Wi-Fi Protected Setup 1421WRAM window random access memory 1422WS web services 1423WTC write through caching 1424WWAN wireless wide area network 1425WWW world wide web 1426WYSIWYG what you see is what you get 1427XBAR crossbar 1428XDMCP X Display Manager control protocol 1429XER XML encoding rules 1430XGA Extended Graphics Array 1431XIP execute in place 1432XML Extensible Markup Language 1433XOR exclusive or 1434XP extreme programming 1435XSI X/Open System Interface 1436XSL extensible stylesheet language 1437XSS cross site scripting 1438XT extended technology 1439XUL XML user interface language 1440YACC yet another compiler compiler 1441YAWPFAPR you are welcome; please file a problem report 1442YP Yellow Pages 1443YTD year to date 1444ZBR zone bit recording 1445ZFOD zero-filled on demand 1446ZIF zero insertion force 1447ZIFS zero insertion force socket 1448ZMA zone multicast address 1449