acronyms.comp revision 1.380
1$NetBSD: acronyms.comp,v 1.380 2023/11/20 21:16:41 jschauma Exp $ 23WHS three-way handshake 38VSB 8-state vestigial side band modulation 4AA anti-aliasing 5AAA authentication, authorization, [and] accounting 6AAT average access time 7ABE attribute-based encryption 8ABI application binary interface 9ABNF augmented backus-naur form 10ABR available bit rate 11ABRT automatic bug reporting tool 12AC alternating current 13ACI adjacent channel interferer 14ACID atomicity, consistency, isolation, durability 15ACK Amsterdam compiler kit 16ACK acknowledgement 17ACL access control list 18ACL active current loop 19ACL asynchronous connection less 20ACP auxiliary control {process,program} 21ACPI advanced configuration and power interface 22ACS access control set 23ACU automatic calling unit 24ADB Apple desktop bus 25ADC analog [to] digital converter 26ADD acronym driven development 27ADDDC adaptive double DRAM device correction 28ADO active data objects 29ADP automatic data processing 30ADPCM adaptive differential pulse code modulation 31ADS alternate data stream 32ADSL asymmetric digital subscriber line 33ADT abstract data type 34AEAD authenticated encryption with associated data 35AEDC advanced error detection and correction 36AER advanced error reporting 37AES Advanced Encryption Standard 38AFP Apple Filing Protocol 39AFS Andrew File System 40AGC automatic gain control 41AGP accelerated graphics port 42AI analog input 43AI artificial intelligence 44AL access list 45AL active link 46ALE address latch enable 47ALPN application-layer protocol negotiation 48ALS ambient light sensor 49ALSA advanced Linux sound architecture 50ALU arithmetic and logical unit 51ALUA asymmetric logical unit access 52AM access method 53AM alignment mask 54AM amplitude modulation 55AMD Advanced Micro Devices Inc 56AMDD Agile model-driven development 57AMI alternate mark inversion 58AMP asymmetric multiprocessing 59AMQP advanced message queuing protocol 60AMT active management technology 61AN Arabic number 62ANR application not responding 63ANSI American National Standards Institute 64AO analog output 65AOC add-on card 66AOL Alert-on-LAN 67AOS add or subtract 68AOT ahead of time 69AP access point 70AP application processor 71APEI ACPI platform error interface 72APFS Apple file system 73API application programming interface 74APIC advanced programmable interrupt controller 75APIPA automatic private IP addressing 76APM advanced power management 77APM application performance management 78APT advanced persistent threat 79APU accelerated processing unit 80AQM active queue management 81ARAT always running APIC timer 82ARC Advanced RISC Computing 83ARC adaptive replacement cache 84ARC automatic reference counting 85ARM Advanced RISC Machines 86ARP Address Resolution Protocol 87ARPA Advanced Research Projects Agency 88ARQ automatic repeat request 89ARR address range register 90ARU audio response unit 91AS autonomous system 92ASA Adaptive Security Appliance 93ASAN Address Sanitizer 94ASC advanced smart cache 95ASCII American Standard Code for Information Interchange 96ASD agile software development 97ASE advanced software environment 98ASF alert standard format 99ASIC application-specific integrated circuit 100ASK amplitude shift keying 101ASLR address space layout randomization 102ASN autonomous system number 103ASP active server pages 104ASP auxiliary storage pool 105ASPM active state power management 106ASQ automated software quality 107ASR Apple software restore 108ASR address space register 109AST abstract syntax tree 110AST asynchronous system trap 111AT access time 112AT advanced technology 113ATA advanced technology attachment 114ATAPI advanced technology attachment packet interface 115ATC address translation cache 116ATF ARM trusted firmware 117ATF automated testing framework 118ATM asynchronous transfer mode 119ATX advanced technology extended 120AV anti virus 121AVB audio video bridging 122AVL Adelson-Velsky-Landis 123AVX advanced vector extensions 124AWDL Apple wireless direct link 125BA byte align 126BAL basic assembly language 127BAR base address register 128BBS bulletin board system 129BCC blind carbon copy 130BCD binary coded decimal 131BCH boot console handler 132BCR byte count register 133BCS base configuration space 134BD baud 135BDD binary decision diagram 136BDI bit deinterleave 137BDUF big design up front 138BEDO burst extended data output 139BER basic encoding rules 140BER bit error {rate,ratio} 141BERT boot error record table 142BFD bidirectional forwarding detection 143BFD binary {file,format} descriptor 144BFKL big fscking kernel lock 145BFS breadth-first search 146BFT binary file transfer 147BGA ball grid array 148BGP Border Gateway Protocol 149BGPSEC BGP Security 150BIND Berkeley Internet Name Daemon 151BIOS Basic Input/Output System 152BIOS built-in operating system 153BIST built-in self-test 154BIU bus interface unit 155BKDG BIOS and kernel developer's guide 156BLAS basic linear algebra subprograms 157BLC back light control 158BLE Bluetooth low energy 159BLOB binary large object 160BM bus master 161BMC baseboard management controller 162BMIC bus master interface controller 163BMP basic multilingual plane 164BMP bitmap image file 165BN boundary neutral 166BNF Backus-Naur form 167BO binary output 168BOF beginning of file 169BOM beginning of message 170BOM byte order mark 171BP base pointer 172BP boot processor 173BPB BIOS parameter block 174BPDU bridge protocol data unit 175BPF Berkeley Packet Filter 176BPI bits per inch 177BPM business process modelling 178BPS bits per second 179BPSK binary phase shift keying 180BQP bounded-error quantum polynomial time 181BQS Berkeley quality software 182BRE basic regular expression 183BS backspace 184BS binary sequence 185BSA basic service area 186BSD Berkeley Software Distribution 187BSDP Boot Service Discovery Protocol 188BSF bit scan forward 189BSOD blue screen of death 190BSP binary space partition 191BSP board support package 192BSP bootstrap processor 193BSR bit scan reverse 194BSS basic service set 195BSS block started by symbol 196BSSID basic service set identifier 197BT BitTorrent 198BT Bluetooth 199BT bit test 200BTC bit test [and] complement 201BTM bus transport mechanism 202BTR bit test [and] reset 203BTS bit test [and] set 204BTS bug tracking system 205BUAG big ugly ASCII graphic 206BW bandwidth 207BWM block-write mode 208CA certificate authority 209CAC cryptographic access control 210CACLS change access control lists 211CAD computer-aided design 212CAM computer assisted manufacturing 213CAM conditional access module 214CAM content addressable memory 215CAN controller area network 216CARP Common Address Redundancy Protocol 217CAS column address strobe 218CAS compare and swap 219CAS computer algebra system 220CASE computer aided software engineering 221CAU control access unit 222CAV constant angular velocity 223CBC cipher block chaining 224CBR constant bit rate 225CC carbon copy 226CCC Chaos Computer Club 227CCD charge coupled device 228CCI co-channel interferer 229CCNUMA cache-coherent non-uniform memory access 230CCTL command completion time limit 231CD cache disable 232CD compact disc 233CDDA compact disc digital audio 234CDL compiler description language 235CDMA code division multiple access 236CDN content delivery network 237CDP Cisco Discovery Protocol 238CDRAM cache dynamic random access memory 239CE customer edge 240CER canonical encoding rules 241CERT computer emergency response team 242CET control flow enforcement technology 243CF compact flash 244CFB cipher feedback 245CFG context-free grammar 246CFG control-flow graph 247CFI control-flow integrity 248CG control gate 249CGA Color Graphics Adapter 250CGI common gateway interface 251CGN Carrier-Grade NAT 252CHAP Challenge-Handshake Authentication Protocol 253CHFS chip file system 254CHS cylinder/head/sector 255CI continuous integration 256CI {common,component} interface 257CIA confidentiality, integrity, availability 258CIDR Classless Inter-Domain Routing 259CIF common intermediate format 260CIFS Common Internet File System 261CIL common intermediate language 262CIR carrier-to-interference ratio 263CIS contact image sensor 264CISC complex instruction set {computer,computing} 265CJK Chinese, Japanese, [and] Korean 266CLF common log format 267CLI command line interface 268CLI common language infrastructure 269CLR common language runtime 270CLS common language specification 271CLTT closed loop thermal throttling 272CLUT color look-up table 273CLV constant linear velocity 274CM configuration management 275CMA concert multithread architecture 276CMC certificate management over CMS 277CMC chassis management controller 278CMC corrected machine check 279CMI control {management,method} interface 280CMOS complementary metal-oxide-semiconductor 281CMP chip multi-processing 282CMS content management system 283CMS cryptographic message syntax 284CMS {configuration,content,course} management system 285CMYK cyan magenta yellow black 286CN {common,canonical} name 287CNA CVE Numbering Authority 288CNC computer numerical control 289CNR carrier-to-noise ratio 290COA change of authority 291COF current operating frequency 292COFDM coded orthogonal frequency division multiplexing 293COFF common object file format 294COM component object model 295COM computer on module 296COMA cache-only memory architecture 297CORBA common object request broker architecture 298COS class of service 299COW copy-on-write 300CP continuous pilot 301CPA chosen-plaintext attack 302CPB core performance boost 303CPC central processor complex 304CPC cpu performance counters 305CPE common phase error 306CPE common platform enumeration 307CPER common platform error record 308CPG clock pulse generator 309CPI cycles per instruction 310CPL current privilege level 311CPLD complex programmable logic device 312CPP C preprocessor 313CPS characters per second 314CPS continuation-passing style 315CPT command pass through 316CPU central processing unit 317CR carriage return 318CRC cyclic redundancy check 319CRDT conflict-free replicated data type 320CRL carrier recovery loop 321CRLF carriage return line feed 322CRQC cryptanalytically relevant quantum computer 323CRT cathode ray tube 324CRTP curiously recurring template pattern 325CRUD create, read, update, and delete 326CS cable select 327CS chip select 328CS code segment 329CS computer science 330CSDL {common,conceptual} schema definition language 331CSI channel state information 332CSI common system interface 333CSIRT computer security incident response team 334CSMA carrier sense multiple access 335CSMA/CA carrier sense multiple access with collision avoidance 336CSMA/CD carrier sense multiple access with collision detection 337CSP communicating sequential processes 338CSP constrain satisfaction problems 339CSP content security policy 340CSP cryptographic service provider 341CSPM cloud security posture management 342CSR control [and] status registers 343CSRF cross-site request forgery 344CSRG Computer Systems Research Group 345CSS cascading style sheets 346CST common spanning tree 347CSU C start up 348CSV comma-separated values 349CTF compact c type format 350CTM close to metal 351CTR counter [mode] 352CTS clear to send 353CTS common type system 354CUA common user access 355CUT coordinated universal time 356CV control voltage 357CVE common vulnerabilities and exposures 358CVS Concurrent Versions System 359CVSS Common Vulnerability Scoring System 360DA destination address 361DAA distributed application architecture 362DAAP digital audio access protocol 363DAB digital audio broadcasting 364DAC digital [to] analog converter 365DAC discretionary access control 366DAD duplicate address detection 367DAE deterministic authenticated encryption 368DANE DNS-based Authentication of Named Entities 369DAO disk at once 370DAP Directory Access Protocol 371DAT digital audio tape 372DAT dynamic acceleration technology 373DB database 374DBA database administrator 375DBA dynamic bandwidth allocation 376DBB data bus buffer 377DBC design by contract 378DBL dynamic buffer limiting 379DBMS database management system 380DBS database server 381DC data center 382DC direct current 383DCC Direct Client-to-Client 384DCC direct cable connect 385DCD data carrier detect 386DCE data control equipment 387DCE distributed computing environment 388DCIM data center infrastructure management 389DCIM digital camera images 390DCL Digital Command Language 391DCOM distributed component object model 392DCOP Desktop COmmunication Protocol 393DCS data collection systems 394DCT discrete cosine transform 395DCU data cache unit 396DDC display data channel 397DDE dynamic data exchange 398DDI device drivers interface 399DDK device driver kit 400DDL data description language 401DDR double data rate 402DDS direct digital sound 403DDWG Digital Display Working Group 404DE debugging extensions 405DE desktop environment 406DEA data encryption algorithm 407DEC Digital Equipment Corporation 408DEK data encryption key 409DEP data execution prevention 410DER distinguished encoding rules 411DES Data Encryption Standard 412DF don't fragment 413DFA deterministic finite automaton 414DFC data flow control 415DFS depth first search 416DFS distributed file system 417DFSAN Data Flow Sanitizer 418DFT diagnostic function test 419DFT discrete Fourier transform 420DFZ default-free zone 421DGEMM double precision general matrix multiply 422DGL data generation language 423DH Diffie-Hellman 424DHCP Dynamic Host Configuration Protocol 425DIA dedicated Internet access 426DIB device independent bitmap 427DIFS distributed inter-frame space 428DIMM dual inline memory module 429DIRT design in real time 430DKI driver/kernel interface 431DL diode logic 432DL discrete logarithm 433DL download 434DLCI data link connection identifier 435DLE data link escape 436DLL dynamic link library 437DLNA digital living network alliance 438DLP discrete logarithm problem 439DMA direct memory access 440DMB data memory barrier (Arm) 441DMI desktop management interface 442DMS document management system 443DMT discrete multitone modulation 444DMU data management layer 445DNARD Digital network appliance reference design 446DND drag and drop 447DNLC directory name lookup cache 448DNS Domain Name System 449DNSBL Domain Name System Block List 450DNSSEC DNS Security Extensions 451DOE distributed object environment 452DOF data over fibre 453DOH DNS over HTTPS 454DOM document object model 455DOQ DNS over QUIC 456DOS denial of service 457DOS disk operating system 458DOT DNS over TLS 459DP DisplayPort 460DPAA data path acceleration architecture 461DPC deferred procedure call 462DPCM differential pulse code modulation 463DPD dead peer detection 464DPDK data plane development kit 465DPI deep packet inspection 466DPI dots per inch 467DPL descriptor privilege level 468DPS Display PostScript 469DPST display power savings technology 470DRAAS disaster recovery as a service 471DRAM dynamic random access memory 472DRBG deterministic random bit generator 473DRI direct rendering infrastructure 474DRM digital rights management 475DRM direct rendering manager 476DRN Discovery of Network-designated Resolvers 477DRRS display refresh rate switching 478DS debug store 479DS differentiated services 480DS9000 DeathStation 9000 481DS9K DeathStation 9000 482DSA digital signature algorithm 483DSAP destination service access point 484DSB data synchronization barrier (Arm) 485DSB double-sideband modulation 486DSCP differentiated services code point 487DSDT differentiated system descriptor table 488DSF device special file 489DSL dataset and snapshot layer 490DSL digital subscriber line 491DSL domain specific language 492DSLAM digital subscriber line access multiplexer 493DSN delivery status notification 494DSO dynamic shared object 495DSP digital signal processor 496DSSS direct sequence spread spectrum 497DTB device tree blob 498DTC device tree compiler 499DTD document type definition 500DTE data terminal equipment 501DTE dumb terminal emulator 502DTL diode-transistor logic 503DTLS datagram transport layer security 504DTS device tree source 505DTS digital thermal sensor 506DUT device under test 507DVB digital video broadcasting 508DVCS distributed version control system 509DVD digital versatile disc 510DVFS dynamic voltage and frequency scaling 511DVI Digital Visual Interface 512DVI device independent 513DVR digital video recorder 514DWARF Debugging With Attributed Record Formats 515E-XER extended XML encoding rules 516EABI embedded-application binary interface 517EAI Email Address Internationalization 518EAI Enterprise Application Integration 519EAP Extensible Authentication Protocol 520EAPOL EAP over Lan 521EAV entity-attribute-value model 522EAV ethernet audio/video bridging 523EBCDIC Extended Binary Coded Decimal Interchange Code 524EBDA Extended BIOS Data Area 525EBNF extended backus-naur form 526EBR extended boot record 527EC elliptic curve 528ECC elliptic curve cryptography 529ECC error correction code 530ECDH elliptic curve Diffie-Hellman 531ECDL elliptic curve discrete logarithm 532ECDLP elliptic curve discrete logarithm problem 533ECDSA elliptic curve digital signature algorithm 534ECL emitter-coupled logic 535ECN explicit congestion notification 536ECP enhanced capability port 537ECS enhanced chip set 538ECS extended configuration space 539EDAC error detection and correction 540EDAT enhanced dynamic acceleration technology 541EDGE explicit data graph execution 542EDID extended display identification data 543EDO extended data out 544EDS electronical data sheet 545EDSAC electronic delay storage automatic calculator 546EDVAC electronic discrete variable automatic computer 547EEE embrace, extend, extinguish 548EEE energy efficient ethernet 549EEPROM electrically erasable programmable read only memory 550EFI extensible firmware interface 551EFL emitter follower logic 552EFM eight to fourteen modulation 553EFS extent file system 554EGA Enhanced Graphics Adapter 555EGP exterior gateway protocol 556EH extension header 557EIDE enhanced IDE 558EINJ error injection table 559EISA extended industry standard architecture 560ELF executable and linking format 561ELS entry level system 562EMACS Editor MACroS 563EMI electro-magnetic interference 564EMP electro-magnetic pulse 565EMR electro-magnetic radiation 566ENIAC electronic numerical integrator and computer 567EOF end of file 568EOI end of interrupt 569EOIS end of interactive support 570EOL end of life 571EOL end of line 572EOT end of transmission 573EPIC explicitly parallel instruction computing 574EPP enhanced parallel port 575EPP extensible provisioning protocol (RFC5730) 576EPRML extended partial response, maximum likelihood 577EPROM erasable programmable read only memory 578EPT extended page tables 579ERC error recovery control 580ERD emergency recovery disk 581ERD entity relationship diagram 582ERE extended regular expression 583ERST error record serialization table 584ESAN Efficiency Sanitizer 585ESB enterprise service bus 586ESDI enhanced small disk interface 587ESDRAM enhanced synchronous dynamic random access memory 588ESI enclosure services interface 589ESS electronic switching system 590ESS extended service set 591ESSID extended service set identifier 592EST enhanced speedstep 593ETL extract, transform, load 594EU execution unit 595EULA end user license agreement 596EdDSA Edwards curve digital signature algorithm 597FAT file allocation table 598FBRAM frame buffer random access memory 599FCIF full common intermediate format 600FCL fiber channel loop 601FCS frame check sequence 602FDC floppy disk controller 603FDD floppy disk drive 604FDDI fiber distributed data interface 605FDE full disk encryption 606FDT flattened device tree 607FEA finite element analysis 608FEC forward error correction 609FET field-effect transistor 610FF finite field 611FF form feed 612FFDH finite-field Diffie-Hellman 613FFH functional fixed hardware 614FFI foreign function interface 615FFM focus follows mouse 616FFS Fast File System 617FFS find first set 618FFT fast Fourier transform 619FG floating gate 620FHRP first hop redundancy protocol 621FHSS frequency hop spread spectrum 622FID frequency identifier 623FIFO first in, first out 624FILO first in, last out 625FIPS Federal Information Processing Standards 626FIR fast infrared 627FLOPS floating [point] operations per second 628FLOSS free/libre/open source software 629FM frequency modulation 630FMR false match rate 631FOSS free/open source software 632FPGA field programmable gate array 633FPM fast page mode 634FPR floating point register 635FPU floating point unit 636FQDN fully qualified domain name 637FRR false rejection rate 638FRU field replaceable unit 639FS file system 640FSB front side bus 641FSCK file system check 642FSF Free Software Foundation 643FSK frequency shift keying 644FSM finite-state machine 645FTA fault tree analysis 646FTL flash translation layer 647FTP File Transfer Protocol 648FTPS File Transfer Protocol Secure 649FTTH fiber to the home 650FUS fast user switching 651FWH firmware hub 652FWS folding white space 653GAL generic array logic 654GARP generic attribute registration protocol 655GAS generic address structure 656GC garbage collector 657GCC GNU Compiler Collection 658GCM Galois counter mode 659GCR group-coded recording 660GDI Graphics Device Interface 661GDT global descriptor table 662GECOS general comprehensive operating supervisor 663GEM graphics environment manager 664GEM graphics execution manager 665GEMM general matrix multiply 666GENA general event notification architecture 667GHC Glasgow Haskell compiler 668GHES generic hardware error source 669GIC generic interrupt controller 670GID group identifier 671GIF graphics interchange format 672GLBP gateway load balancing protocol 673GMCH graphics and memory controller hub 674GNU GNU's Not Unix 675GOP graphics output protocol 676GOT global offset table 677GPE general purpose event 678GPF general protection fault 679GPG GNU Privacy Guard 680GPL [GNU] General Public License 681GPR general purpose register 682GPS generalized processor sharing 683GPT GUID partition table 684GPU graphics processing unit 685GR golden ratio 686GRE generic routing encapsulation 687GRO generic receive offload 688GSI global system interrupt 689GSO generic send offload 690GUI graphical user interface 691GUID globally unique identifier 692GUS Gravis UltraSound 693GVFS git virtual file system 694HA high availability 695HAL hardware abstraction layer 696HAT hashed array tree 697HATEOAS hypermedia as the engine of application state 698HBA host bus adapter 699HCC Home Cable Computer 700HCCA Home Cable Computer Adaptor 701HCF halt and catch fire 702HCI host controller interface 703HCI human-computer interaction 704HCL hardware compatibility list 705HDCP High-bandwidth Digital Content Protection 706HDD hard disk drive 707HDL hardware description language 708HDMI High-Definition Multimedia Interface 709HDTV high-definition television 710HECI host embedded controller interface 711HEST hardware error source table 712HEVC high efficiency video coding 713HF high frequency 714HFM highest frequency mode 715HFS hierarchical file system 716HID human interface device 717HKDF HMAC-based key derivation function 718HKP HTTP Keyserver Protocol 719HLE hardware lock elision (Intel) 720HLL high-level language 721HMA high memory area 722HMI human-machine interface 723HOOD hierarchical object oriented design 724HOTP HMAC-based one time password 725HP Hewlett-Packard 726HPC high performance computing 727HPD hot plug detection 728HPET high precision event timer 729HSM hardware security module 730HSM hierarchical storage management 731HSRP hot standby router protocol 732HT hyper-threading 733HTC hardware thermal control 734HTCC high temperature co-fired ceramic 735HTML HyperText Markup Language 736HTT hyper-threading technology 737HTTP Hypertext Transfer Protocol 738HTTPS Hypertext Transfer Protocol Secure 739HVDS High-Voltage Differential Signaling 740HVM hardware virtual machine 741HWASAN Hardware-assisted Address Sanitizer 742HZ Hertz 743I2O intelligent input/output 744IA information assurance 745IAAS infrastructure as a service 746IAB Internet Architecture Board 747IANA Internet Assigned Numbers Authority 748IBC iterated block cipher 749IBM International Business Machines 750IBPI international blinking pattern interpretation 751IBS instruction based sampling 752IBSS independent basic service set 753IBT indirect branch tracking 754IC integrated circuit 755ICA independent computer architecture 756ICACLS integrity control access control lists 757ICB Internet Citizen's Band 758ICE in-circuit emulator 759ICE internal compiler error 760ICH I/O controller hub 761ICMP Internet Control Message Protocol 762ICT information and communications technology 763ICW initialization command word 764IDA Intel dynamic acceleration 765IDCMP Intuition direct communication message port 766IDCT inverse discrete cosine transform 767IDE integrated development environment 768IDE integrated drive electronics 769IDPS intrusion detection [and] prevention system 770IDRP inter-domain routing protocol 771IDS intrusion detection system 772IDT interrupt descriptor table 773IE Internet Explorer 774IEC International Electrotechnical Commission 775IEEE Institute of Electrical and Electronics Engineers 776IESG Internet Engineering Steering Group 777IETF Internet Engineering Task Force 778IF intermediate frequency 779IFCM isochronous flow control mode 780IFF Interchange File Format 781IFS internal field separator 782IGD Internet gateway device 783IGMP Internet Group Management Protocol 784IGP interior gateway protocol 785IHV independent hardware vendor 786IKE Internet key exchange 787ILM internal loopback mode 788ILOM integrated lights-out management 789ILP instruction level parallelism 790IM instant messaging 791IMAP Internet Message Access Protocol 792IMC integrated memory controller 793IMCR interrupt mode configuration register 794IME input method editor 795IMR interrupt mask register 796IMS information management system 797IMSI international mobile subscriber identity 798INCITS InterNational Committee for Information Technology Standards 799INODE index node 800IO input/output 801IOCTL input/output control 802IOM input/output managers 803IOMMU input/output memory management unit 804IOT Internet of Things 805IP Internet Protocol 806IP intellectual property 807IPC instructions per cycle 808IPC interprocess communication 809IPCF interprocess communication facility 810IPE integrated programming environment 811IPI intelligent peripheral interface 812IPI interprocessor interrupt 813IPL Initial Program Load 814IPL Interrupt Priority Level 815IPMB Intelligent Platform Management Bus 816IPMI Intelligent Platform Management Interface 817IPNG Internet Protocol, Next Generation 818IPS in-plane switching 819IPS intrusion prevention system 820IPSEC Internet Protocol Security 821IR intermediate representation 822IRC Internet Relay Chat 823IRDA infrared data association 824IRDP ICMP Router Discovery Protocol 825IRQ interrupt request 826IRQL interrupt request level 827IRR interrupt request register 828IRTF Internet Research Task Force 829IS information system 830ISA industry standard architecture 831ISA instruction set architecture 832ISB instruction synchronization barrier (Arm) 833ISDN integrated services digital network 834ISE instant secure erase 835ISI inter-symbol interference 836ISL initial system load 837ISM industrial, scientific, [and] medical 838ISMS information system management system 839ISN initial serial number 840ISO International Standards Organization 841ISOC Internet Society 842ISP Internet service provider 843ISR in-service register 844ISR interrupt service routine 845IST internal spanning tree 846IST interrupt stack table 847ISV independent software vendor 848IT information technology 849ITB Intel Turbo Boost 850ITIL information technology infrastructure library 851ITP in-target probe 852ITSM IT service management 853IV initialization vector 854IVT interrupt vector table 855JBOD just a bunch of disks 856JCL Job Control Language 857JFET junction [gate] field-effect transistor 858JIT just in time 859JPEG Joint Photographic Experts Group 860JRE Java Runtime Environment 861JSON JavaScript Object Notation 862JTAG joint test action group 863KASAN Kernel Address Sanitizer 864KASLR kernel address space layout randomization 865KB keyboard 866KB kilobyte 867KBD keyboard 868KBD kilobaud 869KCS keyboard controller style 870KEK key encryption key 871KEM key encapsulation mechanism 872KLOC thousand lines of code 873KMS kernel-mode setting 874KPI kernel programming interface 875KVA kernel virtual address 876KVM kernel virtual machine 877KVM kernel virtual memory 878KVM keyboard, video, [and] mouse 879L2CAP link layer control and adaptation protocol 880LAG link aggregation group 881LAMP Linux Apache MySQL {Perl,PHP,Python} 882LAN local area network 883LAPIC local advanced programmable interrupt controller 884LAR load access rights 885LBA logical block addressing 886LBNF labeled backus-naur form 887LBS location-based service 888LCD liquid crystal display 889LCP link control protocol 890LDA local delivery agent 891LDAP Lightweight Directory Access Protocol 892LDR light-dependent resistor 893LDT local descriptor table 894LE logical extent 895LED light emitting diode 896LELL low energy link layer 897LER label edge router 898LF line feed 899LF low frequency 900LFM lowest frequency mode 901LFN long file names 902LFO low-frequency oscillation 903LFS log-structured file system 904LFU least frequently used 905LHP loop heat pipe 906LIF logical interchange format 907LIFO last in, first out 908LILO LInux LOader 909LILO last in, last out 910LINT local interrupt 911LIR local Internet registry 912LISP LISt Processor 913LISP Locator/ID Separation Protocol 914LKM {Linux,loadable} kernel module 915LKML Linux kernel mailing list 916LL load linked 917LL/SC load linked/store conditional 918LLC logical link control 919LLD low-level design 920LLDD low-level design document 921LLDP link layer discovery protocol 922LLF low level format 923LLMNR link-local multicast name resolution 924LLVM Low Level Virtual Machine 925LM long mode 926LMCE local machine check exception 927LMI local management interface 928LMM link management mode 929LMP link management protocol 930LNO loop nest optimization 931LOC lines of code 932LOM lights-out management 933LPC low pin count 934LPE Linux performance events 935LPS local positioning system 936LRC longitudinal redundancy check 937LRM left-to-right mark 938LRO Large Receive Offload 939LRO left-to-right override 940LRU least recently used 941LS link state 942LSAN Leak Sanitizer 943LSB Linux standards base 944LSB least significant {bit,byte} 945LSI large scale integration 946LSL load segment limit 947LSM log structured merge 948LSN Large Scale NAT 949LSN log sequence number 950LSO large send offload 951LSR label switch router 952LTCC low temperature co-fired ceramic 953LTO linear tape-open 954LTO link time optimization 955LTR left to right 956LTR letter(-sized paper) 957LTR load task register 958LTS long term support 959LUA Lua Uppercase Accident 960LUN logical unit number 961LV logical volume 962LVDS Low-Voltage Differential Signaling 963LVM logical volume management 964LVT local vector table 965LWP light-weight process 966LZSS Lempel Ziv Storer Szymanski 967LZW Lempel Ziv Welch 968MAB MAC authentication bypass 969MAC mandatory access control 970MAC message authentication {check,code} 971MAC {media,medium} access control 972MADT multiple APIC descriptor table 973MAMR microwave-assisted magnetic recording 974MB megabyte 975MBA multi-boot agent 976MBR master boot record 977MBS megabits per second 978MC memory controller 979MCA MicroChannel architecture 980MCA machine check architecture 981MCC multiversion concurrency control 982MCE machine check exception 983MCGA Multi-Color Graphics Array 984MCH memory controller hub 985MCLAG multi-chassis link aggregation group 986MCM multi-chip module 987MCQ memory controlled queue 988MD MiniDisc 989MD machine-dependent 990MD-SAL model-driven service abstraction layer 991MDA Monochrome Display Adapter 992MDA mail delivery agent 993MDC Management Data Clock 994MDI Medium Dependent Interface 995MDI-X Medium Dependent Interface Crossover 996MDIO Management Data Input/Output 997MDMX MIPS Digital Media eXtension 998MDRAM multibank dynamic random access memory 999MDS microarchitectural data sampling 1000MESI modified, exclusive, shared, invalid 1001MFC Microsoft Foundation Classes 1002MFC merge from current 1003MFM modified frequency modulation 1004MFU most frequently used 1005MGCP media gateway control protocol 1006MHU message handling unit 1007MI machine interface 1008MI machine-independent 1009MIB management information base 1010MIC message integrity {check,code} 1011MID mobile Internet device 1012MIDI musical instrument digital interface 1013MIF management information format 1014MII media independent interface 1015MIM man in the middle 1016MIMD multiple instruction, multiple data 1017MIME Multipurpose Internet Mail Extensions 1018MIMO multiple input multiple output 1019MIPS Microprocessor without Interlocked Pipeline Stages 1020MIPS million instructions per second 1021MISD multiple instruction, single data 1022MIT Massachusetts Institute of Technology 1023MITM man in the middle 1024ML machine language 1025ML machine learning 1026ML mailing list 1027ML markup language 1028ML maximum likelihood 1029ML-KEM module-lattice based key-encapsulation mechanism 1030MLAG multi-chassis link aggregation group 1031MLC multi-level cell 1032MLD multicast listener discovery 1033MLHP micro loop heat pipe 1034MLIR multi-level intermediate representation 1035MLO MMC loader 1036MMC multi-media card 1037MMF multi-mode fiber 1038MMIC monolithic microwave integrated circuit 1039MMIO memory mapped input/output 1040MMORPG massive multiplayer online role playing game 1041MMRP multiple MAC registration protocol 1042MMU memory management unit 1043MMX matrix math extension 1044MMX multimedia extension 1045MMX multiple math extension 1046MO magneto-optical 1047MOESI modified, owned, exclusive, shared, invalid 1048MOF maximum operating frequency 1049MOSFET metal-oxide-semiconductor field-effect transistor 1050MOSI modified, owned, shared, invalid 1051MP multi-platform 1052MP multiplayer 1053MP {multiprocessing,multiprocessor} 1054MPEG moving picture experts group 1055MPI message passing interface 1056MPLS Multiprotocol Label Switching 1057MPP massively parallel processor 1058MPS memory pool system 1059MPS multiprocessor specification 1060MQTT Message Queuing Telemetry Transport 1061MR modem ready 1062MRO method resolution order 1063MRP multiple registration protocol 1064MRU most recently used 1065MS Microsoft 1066MSAN Memory Sanitizer 1067MSB most significant {bit,byte} 1068MSC message sequence chart 1069MSE mean square error 1070MSF minutes seconds frames 1071MSI message signaled interrupt 1072MSI modified, shared, invalid 1073MSR {machine state,model-specific} register 1074MSS maximum segment size 1075MSTP Multiple Spanning Tree Protocol 1076MT machine translation 1077MTA mail transfer agent 1078MTBF mean time between failures 1079MTP media transfer protocol 1080MTRR memory type range register 1081MTTF mean time to failure 1082MTU maximum transmission unit 1083MUA mail user agent 1084MUD multi-user domain 1085MVCC multiversion concurrency control 1086MVR multicast VLAN registration 1087MVRP multiple VLAN registration protocol 1088MWE module width encoding 1089MX mail exchange 1090NACK negative acknowledgement 1091NAK negative acknowledgement 1092NAN neighbor awareness networking 1093NAN not a number 1094NAPT Network Address Port Translation 1095NAS network attached storage 1096NAT network address translation 1097NAV network allocation vector 1098NC numerical control 1099NC-SI network controller sideband interface 1100NCO numerically-controlled oscillator 1101NCP Network Control Protocol 1102NCQ native command queuing 1103NCSI network connectivity status indicator 1104ND neighbor discovery 1105NDFA nondeterministic finite automaton 1106NDIS network driver interface specification 1107NE numeric error 1108NEWS Network extensible Window System 1109NFA nondeterministic finite automaton 1110NFC near-field communication 1111NFCI no functional change intended 1112NFS network file system 1113NFV network function virtualization 1114NHACP NABU HCCA Application Communication Protocol 1115NIA next instruction address 1116NIC network information center 1117NIC network interface card 1118NIDS network intrusion detection system 1119NIP network interface protocol 1120NIPS network intrusion prevention system 1121NIS network information service 1122NIST National Institute of Standards and Technology 1123NLS native language support 1124NMI non-maskable interrupt 1125NMR nonce-misuse resistance 1126NNTP Network News Transfer Protocol 1127NOC network operations center 1128NOP no operation 1129NOS network operating system 1130NP nondeterministic polynomial time 1131NRND not recommended for new designs 1132NRZ non-return to zero 1133NSA National Security Agency 1134NSA nation-state adversary 1135NSA no such agency 1136NTA negative trust anchor 1137NTM non-deterministic Turing machine 1138NTP Network Time Protocol 1139NUMA non-uniform memory access 1140NURBS non-uniform rational basis spline 1141NVMM NetBSD Virtual Machine Monitor 1142NVMM non-volatile main memory 1143NVRAM non-volatile random access memory 1144NW not write-through 1145NX no execute 1146OAEP optimal asymmetric encryption padding 1147OAM operations, administration, and {management,maintenance} 1148OBO off by one 1149OBOE off by one error 1150OCL object constraint language 1151OCR optical character recognition 1152ODBC Open Database Connectivity 1153ODCM on-demand clock modulation 1154ODE offline device environment 1155ODI open data-link interface 1156ODM object data manager 1157ODMR on-demand mail relay 1158ODT on-die termination 1159OEM original equipment manufacturer 1160OFB output feedback 1161OFDM orthogonal frequency division multiplexing 1162OFET organic field-effect transistor 1163OLAP online analytical processing 1164OLE object linking and embedding 1165OLTP online transaction processing 1166ONCE on-{chip,circuit} emulation 1167ONFI open nand flash interface 1168OO OpenOffice 1169OO object oriented 1170OOB out of band 1171OOE out of order execution 1172OOM out of memory 1173OOO OpenOffice.org 1174OOP object oriented programming 1175OOPS object oriented programming systems 1176OOSE object oriented software engineering 1177OPM operations per minute 1178OPS operations per second 1179OQL Object Query Language 1180ORB object request broker 1181ORM object-relational mapping 1182OS operating system 1183OSD object-based storage device 1184OSD open source definition 1185OSF open software foundation 1186OSI Open Source Initiative 1187OSI open systems interconnection 1188OSPF open shortest path first 1189OSPM OS power management 1190OSS open sound system 1191OSS open source software 1192OSVW operating system visible workarounds 1193OTP one time password 1194OTP open telecom platform 1195OU organizational unit 1196OUI organizationally unique identifier 1197OWASP Open Web Application Security Project 1198OWL Web Ontology Language 1199P2P PCI to PCI 1200P2P peer to peer 1201PA phase accumulator 1202PA physical address 1203PAAS platform as a service 1204PAC phase-amplitude converter 1205PAE physical address extension 1206PAGP port aggregation protocol 1207PAL phase alternating line 1208PAL programmable array logic 1209PAM pluggable authentication modules 1210PAM pulse amplitude modulation 1211PAP password authentication protocol 1212PAT page attribute table 1213PAT port address translation 1214PATA parallel ATA 1215PAX portable archive exchange 1216PBE pending break encoding 1217PBE programming by example 1218PBR partition boot record 1219PBX private branch exchange 1220PC personal computer 1221PC program counter 1222PCB Protocol Control Block 1223PCB printed circuit board 1224PCB process control block 1225PCBC propagating cipher block chaining 1226PCC Portable C Compiler 1227PCD page-level cache disable 1228PCE path computation element 1229PCE performance-monitor counter enable 1230PCEP Path Computation Element Protocol 1231PCH platform controller hub 1232PCI peripheral component interconnect 1233PCM phase change memory 1234PCM pulse code modulation 1235PCMCIA Personal Computer Memory Card International Association 1236PCP Port Control Protocol 1237PD public domain 1238PDA personal digital assistant 1239PDA pushdown automaton 1240PDAG propositional directed acyclic graph 1241PDB power distribution board 1242PDF portable document format 1243PDM pulse-duration modulation 1244PDN pull-down network 1245PDP page {descriptor,directory} page 1246PDS product data sheet 1247PDU protocol data unit 1248PE portable executable 1249PE protection enable 1250PE provider edge 1251PEAP Protected EAP 1252PECI platform environment control interface 1253PEP protocol extension protocol 1254PER packed encoding rules 1255PFS perfect forward secrecy 1256PGAS partitioned global address space 1257PGE page global enable 1258PGO profile guided optimization 1259PGP Pretty Good Privacy 1260PHB PCI host bridge 1261PHP PHP: Hypertext Preprocessor 1262PIC performance instrumentation counters 1263PIC position independent code 1264PIC programmable interrupt controller 1265PICNIC problem in chair, not in computer 1266PID process id 1267PIE position independent executable 1268PIL Priority Interrupt Level 1269PIM personal information manager 1270PIM platform-independent model 1271PIO programmed input/output 1272PIPT physically indexed, physically tagged 1273PIQ prefetch input queue 1274PIR private information retrieval 1275PIT programmable interrupt timer 1276PIV personal identity verification 1277PIX Private Internet eXchange 1278PKCS public-key cryptography standards 1279PKI public key infrastructure 1280PLC programmable logic controller 1281PLD programmable logic device 1282PLL phase locked loop 1283PLRU pseudo LRU 1284PLT procedure linkage table 1285PLTM package level thermal management 1286PM power management 1287PM {phase,pulse} modulation 1288PMC performance monitoring counters 1289PME power management event 1290PMEG page map entry group 1291PMI performance monitoring infrastructure 1292PMI platform management interrupt 1293PMIC power management integrated circuit 1294PMIO port-mapped input/output 1295PMT photo-multiplier tube 1296PMU performance monitoring units 1297PMU power management unit 1298PNG portable network graphics 1299PNP plug and play 1300POE power over ethernet 1301POF probability of failure 1302POP Post Office Protocol 1303POP power on password 1304POR plan of record 1305POSIX Portable Operating System Interface [for Unix] 1306POST power on self test 1307POTS plain old telephone system 1308POWER Performance Optimization With Enhanced RISC 1309POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1310PP pair programming 1311PPB PCI [to] PCI bridge 1312PPC Power Performance Computing 1313PPC PowerPC 1314PPI pixels per inch 1315PPM pages per minute 1316PPP Point-to-Point Protocol 1317PPPOA Point-to-Point Protocol over ATM 1318PPPOE Point-to-Point Protocol over Ethernet 1319PPR processor programming reference 1320PPT powerpoint 1321PPT punched paper tape 1322PPU physics processing unit 1323PQC post-quantum cryptography 1324PRAM Parameter RAM 1325PRBS pseudorandom bit sequence 1326PRF pseudorandom function [family] 1327PRG pseudorandom generator 1328PRML partial response, maximum likelihood 1329PRN pseudorandom {noise,number} 1330PRNG pseudorandom number generator 1331PROM programmable read only memory 1332PRP pseudorandom permutation 1333PRU Programmable Realtime Unit 1334PS PostScript 1335PSD power spectral density 1336PSE page size extensions 1337PSK phase shift keying 1338PSK pre-shared key 1339PSTN public switched telephone network 1340PSW program status word 1341PTE page table entry 1342PTLA pseudo top level aggregator 1343PTP page table page 1344PTV perceived target value 1345PU processing unit 1346PUC personal unblocking code 1347PUN physical unit number 1348PV physical volume 1349PVC permanent virtual circuit 1350PVG physical volume group 1351PVI protected-mode virtual interrupt 1352PVRST Per-VLAN rapid spanning tree 1353PVST Per-VLAN Spanning Tree 1354PWM pulse width modulation 1355PXE preboot execution environment 1356QA quality assurance 1357QAM quadrature amplitude modulation 1358QAM quality assurance management 1359QBE query by example 1360QC quality control 1361QCIF quarter common intermediate format 1362QDI quasi delay insensitive 1363QOI quality of implementation 1364QOI quick order interface 1365QOS quality of service 1366QUIC Quick UDP Internet Connections 1367QVL qualified vendor list 1368R/O read only 1369R/W read/write 1370RA receiver address 1371RA remote assistance 1372RA resource affinity 1373RA router advertisement 1374RAD rapid application development 1375RADIUS remote authentication dial-in user service 1376RAID redundant array of {independent,inexpensive} disks 1377RAII resource acquisition is initialization 1378RAM random access memory 1379RAS reliability, availability and serviceability 1380RAS remote access service 1381RAS restartable atomic sequence 1382RAS row address strobe 1383RAT register allocation table 1384RAT remote access trojan 1385RBF radial basis function 1386RBL real-time blackhole list 1387RBL reputation block list 1388RBNF routing backus-naur form 1389RBT red-black tree 1390RC release candidate 1391RC remote control 1392RC run commands 1393RCS Revision Control System 1394RCU read, copy, update 1395RDB Rigid Disk Block 1396RDBMS relational database management system 1397RDF Resource Description Framework 1398RDM relational data model 1399RDMA remote direct memory access 1400RDP remote desktop protocol 1401RDRAM Rambus DRAM 1402RE regular expression 1403REPL read, evaluate, print, loop 1404REST representational state transfer 1405RF radio frequency 1406RFB remote frame buffer 1407RFI radio frequency interference 1408RFO request for ownership 1409RFU reserved for future use 1410RGB red green blue 1411RGBA red green blue alpha 1412RGMII reduced gigabit media independent interface 1413RH read hit 1414RHEL Red Hat Enterprise Linux 1415RHL Red Hat Linux 1416RIB routing information base 1417RIFF Resource Interchange File Format 1418RIP Raster Image Processor 1419RIP Routing Information Protocol 1420RIR regional Internet registry 1421RISC reduced instruction set {computer,computing} 1422RKM ROM Kernel Manual 1423RLE run length encoding 1424RLL run length limited 1425RLO right-to-left override 1426RM read miss 1427RMCP Remote Management Control Protocol 1428RMI remote method invocation 1429RMO Relaxed Memory Ordering 1430RMPM rapid memory power management 1431RMS root mean square 1432RMW read, modify, write 1433RNG random number generator 1434ROA route origin authorization 1435ROM read only memory 1436ROP return-oriented programming 1437RPC remote procedure call 1438RPG Report Program Generator 1439RPKI resource PKI 1440RPL requested privilege level 1441RPM revolutions per minute 1442RPN reverse Polish notation 1443RPVST Rapid Per-VLAN Spanning Tree 1444RR random replacement 1445RR round robin 1446RS relay station 1447RSA Rivest, Shamir, [and] Adleman 1448RSC Receive Segment Coalescing 1449RSIP Realm Specific IP 1450RSN Robust Secure Network 1451RSS Receive Side Scaling 1452RSS really simple syndication 1453RSS residual sum of squares 1454RSTP Rapid Spanning Tree Protocol 1455RT real time 1456RTC real time clock 1457RTC real time computing 1458RTF rich text format 1459RTL register transfer language 1460RTL resistor-transistor logic 1461RTL right to left 1462RTM restricted transactional memory (Intel) 1463RTOS real time operating system 1464RTP Real-time Transport Protocol 1465RTS request to send 1466RTT round trip time 1467RTTI run-time type information 1468RUP rational unified process 1469RW Rabin-Williams 1470RWM read-write memory 1471RX {receive,receiver} 1472S/PDIF Sony/Philips Digital Interface Format 1473SA security advisory 1474SA security association 1475SA source address 1476SA structured analysis 1477SAAS software as a service 1478SABRE Semi-automated business research environment 1479SACD super audio compact disc 1480SAD security association database 1481SAF-TE SCSI accessed fault-tolerant enclosure 1482SAGE Semi-automated ground environment 1483SAL {service,system} abstraction layer 1484SAM serial access memory 1485SAM sum addressed memory 1486SAML security assertion markup language 1487SAN storage area network 1488SAP service access point 1489SAPIC streamlined advanced programmable interrupt controller 1490SASD structured analysis, structured design 1491SASI Shugart Associates System Interface 1492SASL simple authentication [and] security layer 1493SATA serial advanced technology attachment 1494SAX simple API for XML 1495SB sound blaster 1496SBSA server base system architecture 1497SBU standard build unit 1498SC store conditional 1499SCA source code analyzer 1500SCADA supervisory control and data acquisition 1501SCC single chip cloud 1502SCC source code control 1503SCCP skinny call control protocol 1504SCCS Source Code Control System 1505SCI scalable coherent interface 1506SCI system control interrupt 1507SCIM smart common input method 1508SCM software configuration management 1509SCM source code management 1510SCM storage-class memory 1511SCO synchronous connection orientated 1512SCP secure copy 1513SCP system control processor 1514SCPI system control and power interface 1515SCSI Small Computer System Interface 1516SCTP Stream Control Transmission Protocol 1517SDDC software defined data center 1518SDEI software delegated exception interface 1519SDI symbol deinterleave 1520SDK software development kit 1521SDL Simple Declarative Language 1522SDL Simple Direct-media Layer 1523SDLC {software,system,systems} development life cycle 1524SDN software defined networking 1525SDP Session Description Protocol 1526SDR software defined radio 1527SDRAM synchronous dynamic random access memory 1528SDS software defined storage 1529SDT syntax-directed translation 1530SEA synchronous external abort 1531SED self-encrypting drive 1532SED stream editor 1533SEGV segmentation violation 1534SEMB serial ATA enclosure management bridge 1535SEO search engine optimization 1536SES SCSI enclosure services 1537SFC sequential function chart 1538SFI simple firmware interface 1539SFI software fault isolation 1540SFP small form-factor pluggable 1541SFTP SSH File Transfer Protocol 1542SFTP Serial File Transfer Protocol 1543SFTP Simple File Transfer Protocol 1544SGI Silicon Graphics, Inc 1545SGI software generated interrupt 1546SGMII serial gigabit media independent interface 1547SGPIO serial general purpose input/output 1548SGRAM synchronous graphics random access memory 1549SHA secure hash algorithm 1550SICP structure and interpretation of computer programs 1551SIDH supersingular isogeny Diffie-Hellman 1552SIEM security information and event management 1553SIF source input format 1554SIFS short inter-frame space 1555SIM subscriber identity module 1556SIMD single instruction, multiple data 1557SIMM single inline memory module 1558SIP Session Initiation Protocol 1559SIR signal-to-interference ratio 1560SIR slow infrared 1561SIRT security incident response team 1562SISD single instruction, single data 1563SIV synthetic intialization vector 1564SLAAC stateless address auto-configuration 1565SLC single-level cell 1566SLDRAM synchronous-link dynamic random access memory 1567SLED single large expensive disk 1568SLI scalable link interface 1569SLI scan-line interleave 1570SLIC system license internal code 1571SLOC source lines of code 1572SLRU segmented LRU 1573SMA smart memory access 1574SMAF system management action field 1575SMAP Simple Mail Access Protocol 1576SMAP supervisor mode access prevention 1577SMART self-monitoring analysis and reporting technology 1578SMB Server Message Block 1579SMB system management bus 1580SMBIOS System Management BIOS 1581SMC system management controller 1582SMD storage module device 1583SMEP supervisor mode execution protection 1584SMF single mode fiber 1585SMI structure of management information 1586SMI system management interrupt 1587SMM system management mode 1588SMP serial management protocol 1589SMP symmetric multiprocessing 1590SMR shingled magnetic recording 1591SMR state machine replication 1592SMT simultaneous multithreading 1593SMTP Simple Mail Transfer Protocol 1594SMU system management unit 1595SNA systems network architecture 1596SNAP Sub-Network Access Protocol 1597SNIA Storage Networking Industry Association 1598SNMP Simple Network Management Protocol 1599SNR signal-to-noise ratio 1600SOA service oriented architecture 1601SOAP Simple Object Access Protocol 1602SOC security operations center 1603SOC system on chip 1604SOF start of frame 1605SOH start of header 1606SOHO small office/home office 1607SOL serial over LAN 1608SOM system on module 1609SP service pack 1610SP stack pointer 1611SPA storage pool allocator 1612SPAN switched port analyzer 1613SPARC scalable processor architecture 1614SPARQL SPARQL Protocol and RDF Query Language 1615SPD security policy database 1616SPD serial presence detect 1617SPDIF Sony/Philips digital interface format 1618SPI serial peripheral interface 1619SPI stateful packet inspection 1620SPIR standard portable intermediate representation 1621SPL secondary program loader 1622SPL spinlock 1623SPL system interrupt priority level 1624SPMD single process, multiple data 1625SPR special purpose register 1626SPT sectors per track 1627SQA software quality assurance 1628SQCIF sub quarter common intermediate format 1629SQL Structured Query Language 1630SRAM static random access memory 1631SRC sample rate conversion 1632SRP SCSI RDMA protocol 1633SRR shaped round robin 1634SRTP Secure Real-time Transport Protocol 1635SS self-snoop 1636SS stack segment 1637SSA static single assignment 1638SSAP source service access point 1639SSB single-sideband modulation 1640SSB speculative store bypass 1641SSBB speculative store bypass barrier (Arm) 1642SSBD speculative store bypass disable (Intel) 1643SSC spread spectrum clock 1644SSD solid state drive 1645SSE streaming SIMD extensions 1646SSFDC solid state floppy disc card 1647SSH secure shell 1648SSI server side includes 1649SSID service set identifier 1650SSL secure sockets layer 1651SSP stack smashing protection 1652SSRF server-side request forgery 1653SSTP secure socket tunneling protocol 1654STC software thermal control 1655STD state transition diagram 1656STM software transactional memory 1657STOMP Streaming Text Oriented Messaging Protocol 1658STP Spanning Tree Protocol 1659STP shielded twisted pair 1660STRG spanning tree root guard 1661SUN Stanford University Network 1662SUS Single Unix Specification 1663SUT system under test 1664SVC switched virtual circuit 1665SVG scalable vector graphics 1666SVGA Super Video Graphics Array 1667SVI {switch,switched} virtual interface 1668SVM secure virtual machine 1669SVM support vector machine 1670SVR System V Release 1671SVS Separate Virtual Space 1672SWF Shockwave Flash 1673SWIG simplified wrapper [and] interface generator 1674SYR symbol timing recovery 1675TA test assertion 1676TA transmitter address 1677TAA transactional asynchronous abort (Intel) 1678TACACS terminal access controller access-control system 1679TAI international atomic time 1680TAO track at once 1681TAOCP The Art of Computer Programming 1682TAP Test Anything Protocol 1683TAS test and set 1684TB terabyte 1685TBNF transitional backus-naur form 1686TCB trace capture buffer 1687TCB trusted computing base 1688TCC thermal control circuit 1689TCL tool command language 1690TCP Transmission Control Protocol 1691TCQ tagged command queueing 1692TDC time [to] digital converter 1693TDD test-driven development 1694TDD time division duplex 1695TDM time division multiplexing 1696TDMA time division multiple access 1697TDOA time difference of arrival 1698TDP thermal design {point,power} 1699TDR time-domain reflectometry 1700TECO Text Editor and Corrector 1701TEE Trusted Execution Environment 1702TFT thin film transistor 1703TFTP Trivial File Transfer Protocol 1704TIAS try it and see 1705TIFF tagged image file format 1706TITS try it to see 1707TK temporal key 1708TKIP Temporal Key Integrity Protocol 1709TLA top level aggregator 1710TLB translation lookaside buffer 1711TLD top level domain 1712TLER time-limited error recovery 1713TLI transport layer interface 1714TLS thread local storage 1715TLS transport layer security 1716TM Turing machine 1717TM thermal monitor 1718TMDS transition minimized differential signaling 1719TMG transmogrifier 1720TMO timeout 1721TOD time of day 1722TOE TCP offload engine 1723TOFU trust on first use 1724TOS terms of service 1725TOS trusted operating system 1726TOS type of service 1727TOTP time-based one time password 1728TP transaction processing 1729TPI tracks per inch 1730TPM transactions per minute 1731TPM trusted platform module 1732TPR task priority register 1733TPS transactions per second 1734TPS transmission parameters signaling 1735TR task register 1736TR token ring 1737TRL timing recovery loop 1738TRNG true random number generator 1739TS terminal services 1740TS time series 1741TS time stamp 1742TS transport stream 1743TSAN Thread Sanitizer 1744TSC time stamp counter 1745TSD time stamp disable 1746TSDB time series database 1747TSL test, set, lock 1748TSO TCP segmentation offload 1749TSO Total Store Ordering 1750TSO time sharing option 1751TSP Time-Stamp Protocol 1752TSP Tunnel Setup Protocol 1753TSP time synchronization protocol 1754TSP traveling salesman problem 1755TSS task state segment 1756TSV tab-separated values 1757TSX transaction synchronization extensions (Intel) 1758TTL time to live 1759TTL transistor-transistor logic 1760TTM translation table maps 1761TTY teletype 1762TU translation unit 1763TUI {terminal,text-based,textual} user interface 1764TX {transmit out,transmitter} 1765TXG transaction group 1766TZ time zone 1767UAC user {access,account} control 1768UAF use-after-free 1769UART universal asynchronous receiver/transmitter 1770UAT user acceptance testing 1771UB undefined behavior 1772UBSAN Undefined Behavior Sanitizer 1773UC uncacheable 1774UCS unified computing system 1775UCS uniform-cost search 1776UCS universal coded character set 1777UDI uniform driver interface 1778UDMA ultra DMA 1779UDO ultra density optical 1780UDP User Datagram Protocol 1781UDS Unix Domain Socket 1782UEFI unified extensible firmware interface 1783UFO UDP fragmentation offload 1784UFS Unix File System 1785UGA universal graphics adapter 1786UI unit interval 1787UI user interface 1788UICC universal integrated circuit card 1789UID unique identifier 1790UID user identifier 1791UL upload 1792UMA uniform memory access 1793UMA upper memory area 1794UMB upper memory block 1795UML unified modeling language 1796UMPC ultra-mobile PC 1797UPNP universal plug and play 1798UPS uninterruptible power supply 1799URI uniform resource identifier 1800URL uniform resource locator 1801URN uniform resource name 1802USART universal synchronous/asynchronous receiver/transmitter 1803USB universal serial bus 1804USWC uncacheable speculative write combining 1805UT unit test 1806UTC coordinated universal time 1807UTF unicode transformation formats 1808UTP unshielded twisted pair 1809UTS UNIX time-sharing 1810UUCP Unix-to-Unix Copy Protocol 1811UUID universally unique identifier 1812UUOC useless use of cat 1813UUT unit under test 1814UX user experience 1815VA vertical alignment 1816VA virtual address 1817VA volt-ampere 1818VAX virtual address extension 1819VB Visual Basic 1820VBR volume boot record 1821VCA variable-gain amplifier 1822VCC common collector voltage 1823VCCP virtual chassis control protocol 1824VCF voltage-controlled filter 1825VCM virtual channel memory 1826VCO voltage-controlled oscillator 1827VCP virtual chassis port 1828VCS version control system 1829VDP vulnerability disclosure policy 1830VDPAU Video Decode and Presentation API for Unix 1831VES virtual execution system 1832VESA Video Electronics Standards Association 1833VFO variable-frequency oscillator 1834VFS virtual file system 1835VG volume group 1836VGA Video Graphics Array 1837VHDCI very high density cable interconnect 1838VID {VLAN,voltage level} identifier 1839VIM Vi IMproved 1840VIPT virtually indexed, physically tagged 1841VIVT virtually indexed, virtually tagged 1842VLAN virtual local area network 1843VLD variable-length decoding 1844VLIW very long instruction word 1845VLSI very large scale integration 1846VLSM variable length subnet mask 1847VM virtual {machine,memory} 1848VME virtual mode extension 1849VMX vector multimedia extensions 1850VMX virtual machine extensions 1851VNC virtual network computing 1852VOD video on demand 1853VPD vital product data 1854VPN virtual private network 1855VPWS virtual private wire service 1856VR virtual reality 1857VRAM video random access memory 1858VRF virtual routing and forwarding 1859VRM voltage regulator module 1860VROC Virtual RAID On CPU 1861VRRP Virtual Router Redundancy Protocol 1862VSTP VLAN Spanning Tree Protocol 1863VTP VLAN Trunking Protocol 1864VXFS Veritas file system 1865VXVM Veritas volume manager 1866W watt 1867W3C World Wide Web Consortium 1868WAFL write anywhere file layout 1869WAMP Web Application Messaging Protocol 1870WAN wide area network 1871WAP Wireless Application Protocol 1872WAP wireless access point 1873WDDM Windows Display Driver Model 1874WDM Windows Driver Model 1875WDT watchdog timer 1876WEP Wired Equivalent Privacy 1877WFI wait for interrupt 1878WFQ weighted fair queuing 1879WH write hit 1880WHEA Windows hardware error architecture 1881WIFI wireless fidelity 1882WLAN wireless local area network 1883WM write miss 1884WMF Windows meta file 1885WMI Windows Management Instrumentation 1886WOL Wake-on-LAN 1887WOM Wake-on-Modem 1888WOR Wake-on-Ring 1889WORM write once read many 1890WP WordPerfect 1891WP word processor 1892WP write protect 1893WPA Wi-Fi Protected Access 1894WPA2 Wi-Fi Protected Access II 1895WPAD web proxy auto-discovery protocol 1896WPS Wi-Fi Protected Setup 1897WRAM window random access memory 1898WS web services 1899WTC write through caching 1900WTD weighted tail drop 1901WWAN wireless wide area network 1902WWW world wide web 1903WYSIAYG what you see is all you get 1904WYSIWYG what you see is what you get 1905XBAR crossbar 1906XDMCP X Display Manager control protocol 1907XER XML encoding rules 1908XGA Extended Graphics Array 1909XHR XMLHttpRequest 1910XIP execute in place 1911XML Extensible Markup Language 1912XNA XNA's not acronymed 1913XNS Xerox network systems 1914XOR exclusive or 1915XP extreme programming 1916XSI X/Open System Interface 1917XSL extensible stylesheet language 1918XSLT extensible stylesheet language transformations 1919XSS cross site scripting 1920XT extended technology 1921XTACACS extended terminal access controller access-control system 1922XTI X/Open transport interface 1923XUL XML user interface language 1924YACC yet another compiler compiler 1925YAML YAML ain't markup language 1926YANG yet another next generation 1927YAWPFAPR you are welcome; please file a problem report 1928YP Yellow Pages 1929YTD year to date 1930ZAP ZFS attribute processor 1931ZBR zone bit recording 1932ZFOD zero-filled on demand 1933ZFS zettabyte file system 1934ZIF zero insertion force 1935ZIFS zero insertion force socket 1936ZIL ZFS intent log 1937ZMA zone multicast address 1938ZOI zero one infinity 1939ZOI zone of influence 1940ZPL ZFS Posix layer 1941ZVOL ZFS Volume 1942