acronyms.comp revision 1.376
1$NetBSD: acronyms.comp,v 1.376 2023/10/26 13:43:17 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 71APFS Apple file system 72API application programming interface 73APEI ACPI platform error interface 74APIC advanced programmable interrupt controller 75APIPA automatic private IP addressing 76APM advanced power management 77APM application performance management 78APU accelerated processing unit 79APT advanced persistent threat 80AQM active queue management 81ARAT always running APIC timer 82ARC adaptive replacement cache 83ARC Advanced RISC Computing 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 address space register 108ASR Apple software restore 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 162BMP basic multilingual plane 163BMP bitmap image file 164BMIC bus master interface controller 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 205BW bandwidth 206BWM block-write mode 207BUAG big ugly ASCII graphic 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 239CER canonical encoding rules 240CERT computer emergency response team 241CE customer edge 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 chassis management controller 277CMC corrected machine check 278CMC certificate management over CMS 279CMS {configuration,content,course} management system 280CMS cryptographic message syntax 281CMI control {management,method} interface 282CMOS complementary metal-oxide-semiconductor 283CMP chip multi-processing 284CMS content 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 321CRQC cryptanalytically relevant quantum computer 322CRLF carriage return line feed 323CSIRT computer security incident response team 324CSPM cloud security posture management 325CSRF cross-site request forgery 326CSU C start up 327CRT cathode ray tube 328CRTP curiously recurring template pattern 329CRUD create, read, update, and delete 330CS cable select 331CS chip select 332CS code segment 333CS computer science 334CSDL {common,conceptual} schema definition language 335CSI channel state information 336CSI common system interface 337CSMA carrier sense multiple access 338CSMA/CA carrier sense multiple access with collision avoidance 339CSMA/CD carrier sense multiple access with collision detection 340CSP communicating sequential processes 341CSP content security policy 342CSP constrain satisfaction problems 343CSP cryptographic service provider 344CSR control [and] status registers 345CSRG Computer Systems Research Group 346CSS cascading style sheets 347CST common spanning tree 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 421DGL data generation language 422DGEMM double precision general matrix multiply 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 double-sideband modulation 485DSB data synchronization barrier (Arm) 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 device independent 512DVI Digital Visual Interface 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 541EdDSA Edwards curve digital signature algorithm 542EDGE explicit data graph execution 543EDID extended display identification data 544EDO extended data out 545EDS electronical data sheet 546EDSAC electronic delay storage automatic calculator 547EDVAC electronic discrete variable automatic computer 548EEE energy efficient ethernet 549EEE embrace, extend, extinguish 550EEPROM electrically erasable programmable read only memory 551EFI extensible firmware interface 552EFL emitter follower logic 553EFM eight to fourteen modulation 554EFS extent file system 555EGA Enhanced Graphics Adapter 556EGP exterior gateway protocol 557EH extension header 558EIDE enhanced IDE 559EISA extended industry standard architecture 560EINJ error injection table 561ELF executable and linking format 562ELS entry level system 563EMI electro-magnetic interference 564EMP electro-magnetic pulse 565EMR electro-magnetic radiation 566EMACS Editor MACroS 567ENIAC electronic numerical integrator and computer 568EOF end of file 569EOI end of interrupt 570EOIS end of interactive support 571EOL end of life 572EOL end of line 573EOT end of transmission 574EPIC explicitly parallel instruction computing 575EPP enhanced parallel port 576EPP extensible provisioning protocol (RFC5730) 577EPRML extended partial response, maximum likelihood 578EPROM erasable programmable read only memory 579EPT extended page tables 580ERC error recovery control 581ERD emergency recovery disk 582ERD entity relationship diagram 583ERE extended regular expression 584ERST error record serialization table 585ESAN Efficiency Sanitizer 586ESB enterprise service bus 587ESDI enhanced small disk interface 588ESDRAM enhanced synchronous dynamic random access memory 589ESI enclosure services interface 590ESS electronic switching system 591ESS extended service set 592ESSID extended service set identifier 593EST enhanced speedstep 594ETL extract, transform, load 595EU execution unit 596EULA end user license agreement 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 739HVM hardware virtual machine 740HVDS High-Voltage Differential Signaling 741HWASAN Hardware-assisted Address Sanitizer 742HZ Hertz 743I2O intelligent input/output 744IA information assurance 745IAAS infrastructure as a service 746IANA Internet Assigned Numbers Authority 747IAB Internet Architecture Board 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 791IME input method editor 792IMAP Internet Message Access Protocol 793IMC integrated memory controller 794IMCR interrupt mode configuration register 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 821IRC Internet Relay Chat 822IRDA infrared data association 823IRDP ICMP Router Discovery Protocol 824IR intermediate representation 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) 833ISE instant secure erase 834ISDN integrated services digital network 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 933LPE Linux performance events 934LPC low pin count 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 load task register 957LTR letter(-sized paper) 958LTS long term support 959LUA Lua Uppercase Accident 960LUN logical unit number 961LV logical volume 962LVM logical volume management 963LVT local vector table 964LVDS Low-Voltage Differential Signaling 965LWP light-weight process 966LZSS Lempel Ziv Storer Szymanski 967LZW Lempel Ziv Welch 968MAB MAC authentication bypass 969MAC mandatory access control 970MAC {media,medium} access control 971MAC message authentication {check,code} 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 machine check architecture 980MCA MicroChannel 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 machine-dependent 989MD MiniDisc 990MD-SAL model-driven service abstraction layer 991MDA mail delivery agent 992MDA Monochrome Display Adapter 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 merge from current 1002MFC Microsoft Foundation Classes 1003MFM modified frequency modulation 1004MFU most frequently used 1005MGCP media gateway control protocol 1006MHU message handling unit 1007MI machine-independent 1008MI machine interface 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 million instructions per second 1020MIPS Microprocessor without Interlocked Pipeline Stages 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 1029MLAG multi-chassis link aggregation group 1030MLC multi-level cell 1031MLD multicast listener discovery 1032MLHP micro loop heat pipe 1033MLIR multi-level intermediate representation 1034MLO MMC loader 1035MMC multi-media card 1036MMF multi-mode fiber 1037MMIC monolithic microwave integrated circuit 1038MMIO memory mapped input/output 1039MMORPG massive multiplayer online role playing game 1040MMRP multiple MAC registration protocol 1041MMU memory management unit 1042MMX matrix math extension 1043MMX multimedia extension 1044MMX multiple math extension 1045MO magneto-optical 1046MOESI modified, owned, exclusive, shared, invalid 1047MOF maximum operating frequency 1048MOSFET metal-oxide-semiconductor field-effect transistor 1049MOSI modified, owned, shared, invalid 1050MP multi-platform 1051MP multiplayer 1052MP {multiprocessing,multiprocessor} 1053MPEG moving picture experts group 1054MPI message passing interface 1055MPLS Multiprotocol Label Switching 1056MPP massively parallel processor 1057MPS memory pool system 1058MPS multiprocessor specification 1059MQTT Message Queuing Telemetry Transport 1060MR modem ready 1061MRO method resolution order 1062MRP multiple registration protocol 1063MRU most recently used 1064MS Microsoft 1065MSAN Memory Sanitizer 1066MSB most significant {bit,byte} 1067MSC message sequence chart 1068MSE mean square error 1069MSF minutes seconds frames 1070MSI message signaled interrupt 1071MSI modified, shared, invalid 1072MSR {machine state,model-specific} register 1073MSS maximum segment size 1074MSTP Multiple Spanning Tree Protocol 1075MT machine translation 1076MTA mail transfer agent 1077MTBF mean time between failures 1078MTP media transfer protocol 1079MTRR memory type range register 1080MTTF mean time to failure 1081MTU maximum transmission unit 1082MUA mail user agent 1083MUD multi-user domain 1084MVCC multiversion concurrency control 1085MVR multicast VLAN registration 1086MVRP multiple VLAN registration protocol 1087MWE module width encoding 1088MX mail exchange 1089NACK negative acknowledgement 1090NAK negative acknowledgement 1091NAN neighbor awareness networking 1092NAN not a number 1093NAPT Network Address Port Translation 1094NAS network attached storage 1095NAT network address translation 1096NAV network allocation vector 1097NC numerical control 1098NC-SI network controller sideband interface 1099NCO numerically-controlled oscillator 1100NCP Network Control Protocol 1101NCSI network connectivity status indicator 1102NCQ native command queuing 1103ND neighbor discovery 1104NDFA nondeterministic finite automaton 1105NDIS network driver interface specification 1106NE numeric error 1107NEWS Network extensible Window System 1108NFA nondeterministic finite automaton 1109NFC near-field communication 1110NFCI no functional change intended 1111NFS network file system 1112NFV network function virtualization 1113NHACP NABU HCCA Application Communication Protocol 1114NIA next instruction address 1115NIC network information center 1116NIC network interface card 1117NIDS network intrusion detection system 1118NIP network interface protocol 1119NIPS network intrusion prevention system 1120NIS network information service 1121NIST National Institute of Standards and Technology 1122NLS native language support 1123NMI non-maskable interrupt 1124NNTP Network News Transfer Protocol 1125NMR nonce-misuse resistance 1126NOC network operations center 1127NOP no operation 1128NOS network operating system 1129NP nondeterministic polynomial time 1130NRND not recommended for new designs 1131NRZ non-return to zero 1132NSA nation-state adversary 1133NSA no such agency 1134NSA National Security Agency 1135NTM non-deterministic Turing machine 1136NTP Network Time Protocol 1137NUMA non-uniform memory access 1138NURBS non-uniform rational basis spline 1139NVMM NetBSD Virtual Machine Monitor 1140NVMM non-volatile main memory 1141NVRAM non-volatile random access memory 1142NW not write-through 1143NX no execute 1144OAEP optimal asymmetric encryption padding 1145OAM operations, administration, and {management,maintenance} 1146OBO off by one 1147OBOE off by one error 1148OCL object constraint language 1149OCR optical character recognition 1150ODBC Open Database Connectivity 1151ODE offline device environment 1152ODI open data-link interface 1153ODM object data manager 1154ODCM on-demand clock modulation 1155ODMR on-demand mail relay 1156ODT on-die termination 1157OEM original equipment manufacturer 1158OFB output feedback 1159OFDM orthogonal frequency division multiplexing 1160OFET organic field-effect transistor 1161OLAP online analytical processing 1162OLE object linking and embedding 1163OLTP online transaction processing 1164ONCE on-{chip,circuit} emulation 1165ONFI open nand flash interface 1166OO OpenOffice 1167OO object oriented 1168OOB out of band 1169OOE out of order execution 1170OOM out of memory 1171OOO OpenOffice.org 1172OOP object oriented programming 1173OOPS object oriented programming systems 1174OOSE object oriented software engineering 1175OPM operations per minute 1176OPS operations per second 1177OQL Object Query Language 1178ORB object request broker 1179ORM object-relational mapping 1180OS operating system 1181OSD object-based storage device 1182OSD open source definition 1183OSF open software foundation 1184OSI Open Source Initiative 1185OSI open systems interconnection 1186OSPF open shortest path first 1187OSPM OS power management 1188OSS open sound system 1189OSS open source software 1190OSVW operating system visible workarounds 1191OTP one time password 1192OTP open telecom platform 1193OU organizational unit 1194OUI organizationally unique identifier 1195OWASP Open Web Application Security Project 1196OWL Web Ontology Language 1197P2P PCI to PCI 1198P2P peer to peer 1199PA phase accumulator 1200PA physical address 1201PAAS platform as a service 1202PAC phase-amplitude converter 1203PAE physical address extension 1204PAGP port aggregation protocol 1205PAL phase alternating line 1206PAL programmable array logic 1207PAM pluggable authentication modules 1208PAM pulse amplitude modulation 1209PAP password authentication protocol 1210PAT page attribute table 1211PAT port address translation 1212PATA parallel ATA 1213PAX portable archive exchange 1214PBE pending break encoding 1215PBE programming by example 1216PBR partition boot record 1217PBX private branch exchange 1218PC personal computer 1219PC program counter 1220PCB printed circuit board 1221PCB process control block 1222PCB Protocol Control Block 1223PCBC propagating cipher block chaining 1224PCC Portable C Compiler 1225PCD page-level cache disable 1226PCE path computation element 1227PCE performance-monitor counter enable 1228PCEP Path Computation Element Protocol 1229PCH platform controller hub 1230PCI peripheral component interconnect 1231PCM phase change memory 1232PCM pulse code modulation 1233PCMCIA Personal Computer Memory Card International Association 1234PCP Port Control Protocol 1235PD public domain 1236PDA personal digital assistant 1237PDA pushdown automaton 1238PDAG propositional directed acyclic graph 1239PDB power distribution board 1240PDF portable document format 1241PDM pulse-duration modulation 1242PDN pull-down network 1243PDP page {descriptor,directory} page 1244PDS product data sheet 1245PDU protocol data unit 1246PE protection enable 1247PE provider edge 1248PE portable executable 1249PEAP Protected EAP 1250PECI platform environment control interface 1251PEP protocol extension protocol 1252PER packed encoding rules 1253PFS perfect forward secrecy 1254PGAS partitioned global address space 1255PGE page global enable 1256PGO profile guided optimization 1257PGP Pretty Good Privacy 1258PHB PCI host bridge 1259PHP PHP: Hypertext Preprocessor 1260PIC performance instrumentation counters 1261PIC position independent code 1262PIC programmable interrupt controller 1263PICNIC problem in chair, not in computer 1264PID process id 1265PIE position independent executable 1266PIL Priority Interrupt Level 1267PIM personal information manager 1268PIM platform-independent model 1269PIO programmed input/output 1270PIPT physically indexed, physically tagged 1271PIR private information retrieval 1272PIQ prefetch input queue 1273PIT programmable interrupt timer 1274PIV personal identity verification 1275PIX Private Internet eXchange 1276PKCS public-key cryptography standards 1277PKI public key infrastructure 1278PLC programmable logic controller 1279PLD programmable logic device 1280PLL phase locked loop 1281PLRU pseudo LRU 1282PLT procedure linkage table 1283PLTM package level thermal management 1284PM power management 1285PM {phase,pulse} modulation 1286PMC performance monitoring counters 1287PME power management event 1288PMEG page map entry group 1289PMI performance monitoring infrastructure 1290PMI platform management interrupt 1291PMIC power management integrated circuit 1292PMIO port-mapped input/output 1293PMT photo-multiplier tube 1294PMU performance monitoring units 1295PMU power management unit 1296PNG portable network graphics 1297PNP plug and play 1298POE power over ethernet 1299POF probability of failure 1300POP Post Office Protocol 1301POP power on password 1302POR plan of record 1303POSIX Portable Operating System Interface [for Unix] 1304POST power on self test 1305POTS plain old telephone system 1306POWER Performance Optimization With Enhanced RISC 1307POWERPC Performance Optimization With Enhanced RISC - Performance Computing 1308PP pair programming 1309PPB PCI [to] PCI bridge 1310PPC PowerPC 1311PPC Power Performance Computing 1312PPI pixels per inch 1313PPM pages per minute 1314PPP Point-to-Point Protocol 1315PPPOA Point-to-Point Protocol over ATM 1316PPPOE Point-to-Point Protocol over Ethernet 1317PPR processor programming reference 1318PPT powerpoint 1319PPT punched paper tape 1320PPU physics processing unit 1321PQC post-quantum cryptography 1322PRAM Parameter RAM 1323PRBS pseudorandom bit sequence 1324PRG pseudorandom generator 1325PRF pseudorandom function [family] 1326PRML partial response, maximum likelihood 1327PRN pseudorandom {noise,number} 1328PRNG pseudorandom number generator 1329PROM programmable read only memory 1330PRP pseudorandom permutation 1331PRU Programmable Realtime Unit 1332PS PostScript 1333PSD power spectral density 1334PSE page size extensions 1335PSK phase shift keying 1336PSK pre-shared key 1337PSTN public switched telephone network 1338PSW program status word 1339PTE page table entry 1340PTLA pseudo top level aggregator 1341PTP page table page 1342PTV perceived target value 1343PU processing unit 1344PUC personal unblocking code 1345PUN physical unit number 1346PV physical volume 1347PVC permanent virtual circuit 1348PVG physical volume group 1349PVI protected-mode virtual interrupt 1350PVRST Per-VLAN rapid spanning tree 1351PVST Per-VLAN Spanning Tree 1352PWM pulse width modulation 1353PXE preboot execution environment 1354QA quality assurance 1355QAM quadrature amplitude modulation 1356QAM quality assurance management 1357QBE query by example 1358QC quality control 1359QDI quasi delay insensitive 1360QCIF quarter common intermediate format 1361QOI quality of implementation 1362QOI quick order interface 1363QUIC Quick UDP Internet Connections 1364QOS quality of service 1365QVL qualified vendor list 1366R/O read only 1367R/W read/write 1368RA receiver address 1369RA remote assistance 1370RA resource affinity 1371RA router advertisement 1372RAD rapid application development 1373RADIUS remote authentication dial-in user service 1374RAID redundant array of {independent,inexpensive} disks 1375RAII resource acquisition is initialization 1376RAM random access memory 1377RAS reliability, availability and serviceability 1378RAS remote access service 1379RAS restartable atomic sequence 1380RAS row address strobe 1381RAT register allocation table 1382RAT remote access trojan 1383RBF radial basis function 1384RBL reputation block list 1385RBL real-time blackhole list 1386RBNF routing backus-naur form 1387RBT red-black tree 1388RC release candidate 1389RC remote control 1390RC run commands 1391RCS Revision Control System 1392RCU read, copy, update 1393RDB Rigid Disk Block 1394RDBMS relational database management system 1395RDF Resource Description Framework 1396RDM relational data model 1397RDMA remote direct memory access 1398RDP remote desktop protocol 1399RDRAM Rambus DRAM 1400RE regular expression 1401REPL read, evaluate, print, loop 1402REST representational state transfer 1403RF radio frequency 1404RFB remote frame buffer 1405RFI radio frequency interference 1406RFO request for ownership 1407RFU reserved for future use 1408RGB red green blue 1409RGBA red green blue alpha 1410RGMII reduced gigabit media independent interface 1411RH read hit 1412RHEL Red Hat Enterprise Linux 1413RHL Red Hat Linux 1414RIB routing information base 1415RIFF Resource Interchange File Format 1416RIP Raster Image Processor 1417RIP Routing Information Protocol 1418RIR regional Internet registry 1419RISC reduced instruction set {computer,computing} 1420RKM ROM Kernel Manual 1421RLE run length encoding 1422RLL run length limited 1423RLO right-to-left override 1424RM read miss 1425RMCP Remote Management Control Protocol 1426RMI remote method invocation 1427RMO Relaxed Memory Ordering 1428RMPM rapid memory power management 1429RMS root mean square 1430RMW read, modify, write 1431RNG random number generator 1432ROM read only memory 1433ROP return-oriented programming 1434RPC remote procedure call 1435RPG Report Program Generator 1436RPKI resource PKI 1437RPL requested privilege level 1438RPM revolutions per minute 1439RPN reverse Polish notation 1440RPVST Rapid Per-VLAN Spanning Tree 1441RR random replacement 1442RR round robin 1443RS relay station 1444RSA Rivest, Shamir, [and] Adleman 1445RSC Receive Segment Coalescing 1446RSIP Realm Specific IP 1447RSN Robust Secure Network 1448RSS really simple syndication 1449RSS Receive Side Scaling 1450RSS residual sum of squares 1451RSTP Rapid Spanning Tree Protocol 1452RT real time 1453RTC real time clock 1454RTC real time computing 1455RTF rich text format 1456RTL register transfer language 1457RTL resistor-transistor logic 1458RTL right to left 1459RTM restricted transactional memory (Intel) 1460RTOS real time operating system 1461RTP Real-time Transport Protocol 1462RTS request to send 1463RTT round trip time 1464RTTI run-time type information 1465RUP rational unified process 1466RW Rabin-Williams 1467RWM read-write memory 1468RX {receive,receiver} 1469S/PDIF Sony/Philips Digital Interface Format 1470SA security advisory 1471SA security association 1472SA source address 1473SA structured analysis 1474SAAS software as a service 1475SABRE Semi-automated business research environment 1476SACD super audio compact disc 1477SAD security association database 1478SAF-TE SCSI accessed fault-tolerant enclosure 1479SAGE Semi-automated ground environment 1480SAL {service,system} abstraction layer 1481SAM serial access memory 1482SAM sum addressed memory 1483SAML security assertion markup language 1484SAN storage area network 1485SAP service access point 1486SAPIC streamlined advanced programmable interrupt controller 1487SASD structured analysis, structured design 1488SASI Shugart Associates System Interface 1489SASL simple authentication [and] security layer 1490SATA serial advanced technology attachment 1491SAX simple API for XML 1492SB sound blaster 1493SBSA server base system architecture 1494SBU standard build unit 1495SC store conditional 1496SCA source code analyzer 1497SCADA supervisory control and data acquisition 1498SCC single chip cloud 1499SCC source code control 1500SCCP skinny call control protocol 1501SCCS Source Code Control System 1502SCI scalable coherent interface 1503SCI system control interrupt 1504SCIM smart common input method 1505SCM software configuration management 1506SCM source code management 1507SCM storage-class memory 1508SCO synchronous connection orientated 1509SCP secure copy 1510SCP system control processor 1511SCPI system control and power interface 1512SCSI Small Computer System Interface 1513SCTP Stream Control Transmission Protocol 1514SDDC software defined data center 1515SDEI software delegated exception interface 1516SDI symbol deinterleave 1517SDK software development kit 1518SDL Simple Declarative Language 1519SDL Simple Direct-media Layer 1520SDLC {software,system,systems} development life cycle 1521SDN software defined networking 1522SDP Session Description Protocol 1523SDR software defined radio 1524SDRAM synchronous dynamic random access memory 1525SDS software defined storage 1526SDT syntax-directed translation 1527SEA synchronous external abort 1528SEGV segmentation violation 1529SED self-encrypting drive 1530SED stream editor 1531SEMB serial ATA enclosure management bridge 1532SEO search engine optimization 1533SES SCSI enclosure services 1534SFC sequential function chart 1535SFI simple firmware interface 1536SFI software fault isolation 1537SFP small form-factor pluggable 1538SFTP SSH File Transfer Protocol 1539SFTP Serial File Transfer Protocol 1540SFTP Simple File Transfer Protocol 1541SGI Silicon Graphics, Inc 1542SGI software generated interrupt 1543SGMII serial gigabit media independent interface 1544SGPIO serial general purpose input/output 1545SGRAM synchronous graphics random access memory 1546SHA secure hash algorithm 1547SICP structure and interpretation of computer programs 1548SIDH supersingular isogeny Diffie-Hellman 1549SIEM security information and event management 1550SIF source input format 1551SIFS short inter-frame space 1552SIM subscriber identity module 1553SIMD single instruction, multiple data 1554SIMM single inline memory module 1555SIP Session Initiation Protocol 1556SIR signal-to-interference ratio 1557SIR slow infrared 1558SIRT security incident response team 1559SISD single instruction, single data 1560SIV synthetic intialization vector 1561SLAAC stateless address auto-configuration 1562SLC single-level cell 1563SLDRAM synchronous-link dynamic random access memory 1564SLED single large expensive disk 1565SLI scalable link interface 1566SLI scan-line interleave 1567SLIC system license internal code 1568SLOC source lines of code 1569SLRU segmented LRU 1570SMA smart memory access 1571SMAF system management action field 1572SMAP Simple Mail Access Protocol 1573SMAP supervisor mode access prevention 1574SMART self-monitoring analysis and reporting technology 1575SMB Server Message Block 1576SMB system management bus 1577SMBIOS System Management BIOS 1578SMC system management controller 1579SMD storage module device 1580SMEP supervisor mode execution protection 1581SMF single mode fiber 1582SMI structure of management information 1583SMI system management interrupt 1584SMM system management mode 1585SMP serial management protocol 1586SMP symmetric multiprocessing 1587SMR shingled magnetic recording 1588SMR state machine replication 1589SMT simultaneous multithreading 1590SMTP Simple Mail Transfer Protocol 1591SMU system management unit 1592SNA systems network architecture 1593SNAP Sub-Network Access Protocol 1594SNIA Storage Networking Industry Association 1595SNMP Simple Network Management Protocol 1596SNR signal-to-noise ratio 1597SOC security operations center 1598SOA service oriented architecture 1599SOAP Simple Object Access Protocol 1600SOC system on chip 1601SOF start of frame 1602SOH start of header 1603SOHO small office/home office 1604SOL serial over LAN 1605SOM system on module 1606SP service pack 1607SP stack pointer 1608SPA storage pool allocator 1609SPAN switched port analyzer 1610SPARC scalable processor architecture 1611SPARQL SPARQL Protocol and RDF Query Language 1612SPD security policy database 1613SPD serial presence detect 1614SPDIF Sony/Philips digital interface format 1615SPI serial peripheral interface 1616SPI stateful packet inspection 1617SPIR standard portable intermediate representation 1618SPL secondary program loader 1619SPL spinlock 1620SPL system interrupt priority level 1621SPMD single process, multiple data 1622SPR special purpose register 1623SPT sectors per track 1624SQA software quality assurance 1625SQCIF sub quarter common intermediate format 1626SQL Structured Query Language 1627SRAM static random access memory 1628SRC sample rate conversion 1629SRP SCSI RDMA protocol 1630SRR shaped round robin 1631SRTP Secure Real-time Transport Protocol 1632SS self-snoop 1633SS stack segment 1634SSA static single assignment 1635SSAP source service access point 1636SSB single-sideband modulation 1637SSB speculative store bypass 1638SSBB speculative store bypass barrier (Arm) 1639SSBD speculative store bypass disable (Intel) 1640SSC spread spectrum clock 1641SSD solid state drive 1642SSE streaming SIMD extensions 1643SSFDC solid state floppy disc card 1644SSH secure shell 1645SSI server side includes 1646SSID service set identifier 1647SSRF server-side request forgery 1648SSTP secure socket tunneling protocol 1649SSL secure sockets layer 1650SSP stack smashing protection 1651STC software thermal control 1652STD state transition diagram 1653STM software transactional memory 1654STOMP Streaming Text Oriented Messaging Protocol 1655STP Spanning Tree Protocol 1656STP shielded twisted pair 1657STRG spanning tree root guard 1658SUN Stanford University Network 1659SUS Single Unix Specification 1660SUT system under test 1661SVC switched virtual circuit 1662SVG scalable vector graphics 1663SVGA Super Video Graphics Array 1664SVI {switch,switched} virtual interface 1665SVM secure virtual machine 1666SVM support vector machine 1667SVR System V Release 1668SVS Separate Virtual Space 1669SWF Shockwave Flash 1670SWIG simplified wrapper [and] interface generator 1671SYR symbol timing recovery 1672TA test assertion 1673TA transmitter address 1674TAA transactional asynchronous abort (Intel) 1675TACACS terminal access controller access-control system 1676TAI international atomic time 1677TAO track at once 1678TAOCP The Art of Computer Programming 1679TAP Test Anything Protocol 1680TAS test and set 1681TB terabyte 1682TBNF transitional backus-naur form 1683TCB trace capture buffer 1684TCB trusted computing base 1685TCC thermal control circuit 1686TCL tool command language 1687TCP Transmission Control Protocol 1688TCQ tagged command queueing 1689TDC time [to] digital converter 1690TDD test-driven development 1691TDD time division duplex 1692TDM time division multiplexing 1693TDMA time division multiple access 1694TDOA time difference of arrival 1695TDP thermal design {point,power} 1696TDR time-domain reflectometry 1697TECO Text Editor and Corrector 1698TEE Trusted Execution Environment 1699TFT thin film transistor 1700TFTP Trivial File Transfer Protocol 1701TIAS try it and see 1702TIFF tagged image file format 1703TITS try it to see 1704TK temporal key 1705TKIP Temporal Key Integrity Protocol 1706TLA top level aggregator 1707TLB translation lookaside buffer 1708TLD top level domain 1709TLER time-limited error recovery 1710TLI transport layer interface 1711TLS thread local storage 1712TLS transport layer security 1713TM Turing machine 1714TM thermal monitor 1715TMG transmogrifier 1716TMDS transition minimized differential signaling 1717TMO timeout 1718TOD time of day 1719TOE TCP offload engine 1720TOFU trust on first use 1721TOS terms of service 1722TOS trusted operating system 1723TOS type of service 1724TOTP time-based one time password 1725TP transaction processing 1726TPI tracks per inch 1727TPM transactions per minute 1728TPM trusted platform module 1729TPR task priority register 1730TPS transactions per second 1731TPS transmission parameters signaling 1732TR task register 1733TR token ring 1734TRL timing recovery loop 1735TRNG true random number generator 1736TS terminal services 1737TS time series 1738TS time stamp 1739TS transport stream 1740TSAN Thread Sanitizer 1741TSC time stamp counter 1742TSD time stamp disable 1743TSDB time series database 1744TSL test, set, lock 1745TSO time sharing option 1746TSO TCP segmentation offload 1747TSO Total Store Ordering 1748TSP Time-Stamp Protocol 1749TSP Tunnel Setup Protocol 1750TSP time synchronization protocol 1751TSP traveling salesman problem 1752TSS task state segment 1753TSV tab-separated values 1754TSX transaction synchronization extensions (Intel) 1755TTL time to live 1756TTL transistor-transistor logic 1757TTM translation table maps 1758TTY teletype 1759TU translation unit 1760TUI {terminal,text-based,textual} user interface 1761TX {transmit out,transmitter} 1762TXG transaction group 1763TZ time zone 1764UAC user {access,account} control 1765UAF use-after-free 1766UART universal asynchronous receiver/transmitter 1767UAT user acceptance testing 1768UB undefined behavior 1769UBSAN Undefined Behavior Sanitizer 1770UC uncacheable 1771UCS uniform-cost search 1772UCS unified computing system 1773UCS universal coded character set 1774UDI uniform driver interface 1775UDMA ultra DMA 1776UDO ultra density optical 1777UDP User Datagram Protocol 1778UDS Unix Domain Socket 1779UEFI unified extensible firmware interface 1780UFO UDP fragmentation offload 1781UFS Unix File System 1782UGA universal graphics adapter 1783UI unit interval 1784UI user interface 1785UICC universal integrated circuit card 1786UID unique identifier 1787UID user identifier 1788UL upload 1789UMA uniform memory access 1790UMA upper memory area 1791UMB upper memory block 1792UML unified modeling language 1793UMPC ultra-mobile PC 1794UPNP universal plug and play 1795UPS uninterruptible power supply 1796URI uniform resource identifier 1797URL uniform resource locator 1798URN uniform resource name 1799USART universal synchronous/asynchronous receiver/transmitter 1800USB universal serial bus 1801USWC uncacheable speculative write combining 1802UT unit test 1803UTC coordinated universal time 1804UTF unicode transformation formats 1805UTP unshielded twisted pair 1806UTS UNIX time-sharing 1807UUCP Unix-to-Unix Copy Protocol 1808UUID universally unique identifier 1809UUOC useless use of cat 1810UUT unit under test 1811UX user experience 1812VA vertical alignment 1813VA virtual address 1814VA volt-ampere 1815VAX virtual address extension 1816VB Visual Basic 1817VBR volume boot record 1818VCA variable-gain amplifier 1819VCC common collector voltage 1820VCCP virtual chassis control protocol 1821VCF voltage-controlled filter 1822VCM virtual channel memory 1823VCO voltage-controlled oscillator 1824VCP virtual chassis port 1825VCS version control system 1826VDP vulnerability disclosure policy 1827VDPAU Video Decode and Presentation API for Unix 1828VES virtual execution system 1829VESA Video Electronics Standards Association 1830VFO variable-frequency oscillator 1831VFS virtual file system 1832VG volume group 1833VGA Video Graphics Array 1834VHDCI very high density cable interconnect 1835VID {VLAN,voltage level} identifier 1836VIM Vi IMproved 1837VIPT virtually indexed, physically tagged 1838VIVT virtually indexed, virtually tagged 1839VLAN virtual local area network 1840VLD variable-length decoding 1841VLIW very long instruction word 1842VLSI very large scale integration 1843VLSM variable length subnet mask 1844VM virtual {machine,memory} 1845VME virtual mode extension 1846VMX vector multimedia extensions 1847VMX virtual machine extensions 1848VNC virtual network computing 1849VOD video on demand 1850VPD vital product data 1851VPN virtual private network 1852VPWS virtual private wire service 1853VR virtual reality 1854VRAM video random access memory 1855VRF virtual routing and forwarding 1856VRM voltage regulator module 1857VROC Virtual RAID On CPU 1858VRRP Virtual Router Redundancy Protocol 1859VSTP VLAN Spanning Tree Protocol 1860VTP VLAN Trunking Protocol 1861VXFS Veritas file system 1862VXVM Veritas volume manager 1863W watt 1864W3C World Wide Web Consortium 1865WAFL write anywhere file layout 1866WAMP Web Application Messaging Protocol 1867WAN wide area network 1868WAP Wireless Application Protocol 1869WAP wireless access point 1870WDM Windows Driver Model 1871WDDM Windows Display Driver Model 1872WDT watchdog timer 1873WEP Wired Equivalent Privacy 1874WFI wait for interrupt 1875WFQ weighted fair queuing 1876WH write hit 1877WHEA Windows hardware error architecture 1878WIFI wireless fidelity 1879WLAN wireless local area network 1880WM write miss 1881WMF Windows meta file 1882WMI Windows Management Instrumentation 1883WOL Wake-on-LAN 1884WOM Wake-on-Modem 1885WOR Wake-on-Ring 1886WORM write once read many 1887WP WordPerfect 1888WP word processor 1889WP write protect 1890WPA Wi-Fi Protected Access 1891WPA2 Wi-Fi Protected Access II 1892WPAD web proxy auto-discovery protocol 1893WPS Wi-Fi Protected Setup 1894WRAM window random access memory 1895WS web services 1896WTC write through caching 1897WTD weighted tail drop 1898WWAN wireless wide area network 1899WWW world wide web 1900WYSIAYG what you see is all you get 1901WYSIWYG what you see is what you get 1902XBAR crossbar 1903XDMCP X Display Manager control protocol 1904XER XML encoding rules 1905XGA Extended Graphics Array 1906XHR XMLHttpRequest 1907XIP execute in place 1908XML Extensible Markup Language 1909XNA XNA's not acronymed 1910XNS Xerox network systems 1911XOR exclusive or 1912XP extreme programming 1913XSI X/Open System Interface 1914XSL extensible stylesheet language 1915XSLT extensible stylesheet language transformations 1916XSS cross site scripting 1917XT extended technology 1918XTACACS extended terminal access controller access-control system 1919XTI X/Open transport interface 1920XUL XML user interface language 1921YACC yet another compiler compiler 1922YAML YAML ain't markup language 1923YANG yet another next generation 1924YAWPFAPR you are welcome; please file a problem report 1925YP Yellow Pages 1926YTD year to date 1927ZAP ZFS attribute processor 1928ZBR zone bit recording 1929ZFOD zero-filled on demand 1930ZFS zettabyte file system 1931ZIF zero insertion force 1932ZIFS zero insertion force socket 1933ZIL ZFS intent log 1934ZMA zone multicast address 1935ZOI zero one infinity 1936ZOI zone of influence 1937ZPL ZFS Posix layer 1938ZVOL ZFS Volume 1939