Technology terms starting with D

1,369 terms

  1. Drift See: genetic drift.
  2. drive sanitation The forced recovery of a BitLocker-protected volume through the removal of all the key binary large objects (BLOBs) that could have decrypted the disk.
  3. driver A driver is a computer program that controls various devices such as the keyboard, mouse, monitor, etc.
  4. DRM data reference model - also known as a "data and information reference model" - describes the data and information that support program and line…
  5. droid 1. In the Internet, an intelligent search tool that automatically seeks out relevant online information based on the user's specifications.
  6. Drone A land, sea, or air vehicle that is remotely or automatically controlled. See also Remotely Piloted Vehicle.
  7. Drop The total wagered in a casino.
  8. drop and insert In a multichannel transmission system, a process that diverts (drops) a portion of the multiplexed aggregate signal at an intermediate point, and…
  9. drop channel operation Operation in which one or more channels of a multichannel system are terminated, i.e.
  10. Drop directory In Exchange Server 2007, a directory used by each Foreign connector to send messages to an internal foreign gateway server that does not use the Simple…
  11. drop repeater In a multichannel communications system, a repeater that has the necessary equipment for the local termination, i.e.
  12. Dropout Brief signal loss caused by a tape head clog, defect in the tape, debris, or other feature that causes an increase in the head-to-tape spacing.
  13. DRP (1) Deployment Readiness Plan (US Army term). (2) Deployment Readiness Program.
  14. DRR Digital Receiver Replacement (USN term).
  15. drum factor In facsimile systems in which drums are used, the ratio of drum length to drum diameter. 2.
  16. drum speed In facsimile systems, the rotation rate of the facsimile transmitter or recorder drum. Note: Drum speed is usually expressed in revolutions per minute.
  17. DS Deep Space.
  18. DS-1 Category of telecommunications circuit capability.
  19. DS-3 LAN Category of telecommunications circuit for a Local Area Network.
  20. DS0 Abbreviation for digital signal 0.
  21. DS1 . . . DS4 Abbreviations for digital signal 1. . . digital signal 4.
  22. DS1C Abbreviation for digital signal 1C.
  23. DSA Special Tropical Disturbance Statement
  24. DSA board A local dial office switchboard at which are handled assistance calls, intercepted calls, and calls from miscellaneous lines and trunks.
  25. DSAA Defense Security Assistance Agency (OSD).
  26. DSAccess The Exchange 2000 component that provides directory lookup services for components such as Simple Mail Transfer Protocol (SMTP), Message Transfer Agent…
  27. DSAT Defense Satellite Weapon.
  28. DSB Defense Science Board.
  29. DSB board A switchboard of a dial system for completing incoming calls received from manual offices. [47CFR]
  30. DSB-SC Abbreviation for double-sideband suppressed carrier. See double-sideband suppressed-carrier transmission.
  31. DSC Abbreviation for digital selective calling.
  32. DSCS Defense Satellite Communications Systems.
  33. DSCS-3 Defense Satellite Communications System Three.
  34. DSCSOC Defense Satellite Communications System Ops Center.
  35. DSE Abbreviation for data switching exchange.
  36. DSI Defense Simulation Internet 85
  37. DSIS (1) Defense Special Intelligence System. (2) Defense Simulation Internet System.
  38. DSM Decision Support Matrix
  39. DSMAC Digital Scene-Matching Area Correlation.
  40. DSMC Defense Systems Management College.
  41. DSML See definition for: Directory Services Markup Language (DSML)
  42. DSN (1) Defense Switched Network (formerly AUTOVON). (2) Deep Space Network (NASA term).
  43. DSN (delivery status notification) Notification that reports the result of an attempt to deliver an e-mail message. DSNs are designed so they can be read by humans or computers.
  44. DSP (1) Defense Support Program. (2) Defense Standardization Program.
  45. DSProxy The Exchange 2000 component that can proxy (and refer) Messaging Application Programming Interface (MAPI) directory service requests from Outlook clients…
  46. DSPRTM Defense Support Program Real-Time Model.
  47. DSR Data Set Ready ( TelComm /Computer term).
  48. DSRCE Down Scooped Radio Control Equipment ( TelComms term).
  49. DSS (1) Defense Supply Service. (2) Digital Signature Standard.
  50. DST Defense Suppression Threat.
  51. DSTAR Defense Strategic and Tactical Array Reproducibility.
  52. DSTO Defence Science Technology Organization (Australia).
  53. DSU Digital Service Unit (Telecomm/Computer term).
  54. DSWA Defense Special Weapons Agency, Alexandria, VA. DSWA is the successor to the DNA.
  55. DT (1) Discrimination Technique. (2) Development Testing. (3) See Development Test I, II, III. (4) Down Time (ILS term). (5) Depressed Trajectory.
  56. DT&E Development Test and Evaluation.
  57. DT/OA Development Test/Operational Assessment.
  58. DT/OT Developmental Test/Operational Test.
  59. DTAP Defense Technology Area Plan.
  60. DTC Design-to-Cost.
  61. DTD document type definition - a format specification file that accompanies documents prepared according to SGML (standard generalized markup language)…
  62. DTE Data Terminal Equipment ( TelComm /Computer term).
  63. DTE clear signal A call control signal sent by data terminal equipment (DTE) to initiate clearing.
  64. DTE waiting signal A call control signal, sent by the data-circuit-terminating-equipment/data-terminal-equipment (DCE/DTE) interface, that indicates that the DTE is waiting…
  65. DTED Digital Terrain Elevation Data.
  66. DTIC Defense Technical Information Center, Alexandria, VA. 86
  67. DTIS Defense Technical Information Services (now DEIS).
  68. DTLCC Design to Life-Cycle Cost.
  69. DTLOMS Doctrine, Training, Leadership, Organization, Material, and Soldiers (USA BCBL term).
  70. DTLS Descriptive Top-Level Specification.
  71. DTMF Data Tone Multiple Frequency ( TelComm /Computer term).
  72. DTO Defense Technology Objectives.
  73. DTOC Division Tactical Operations Center.
  74. DTP 1. Detailed Test Plan. 2. Desktop Publishing.
  75. DTR (1) Demonstration Test Round. (2) Development Test Round.
  76. DTRM Dual Thrust Rocket Motor.
  77. DTSA Defense Technology Security Administration.
  78. DTSE&E Director, Test Systems Engineering and Evaluation.
  79. DTST Defensive Technologies Study Team.
  80. DTT Design-To Threat
  81. DTWT Dual Traveling Wave Tube (Electronics Engineering term).
  82. DU Depleted Uranium.
  83. DUA Design Upgrade Assessment.
  84. dual access The connection of a user to two switching centers by separate access lines using a single message routing indicator or telephone number. 2.
  85. dual bus A pair of parallel buses arranged such that the direction of data flow in one bus is opposite to the direction of data flow in the other bus.
  86. dual channel protocol [fixme - this term does not appear anywhere in the gridftp docs] GridFTP uses two channels: One of the channels, called the control channel, is used for…
  87. dual control In security systems, a process of using two or more separate individuals (or entities), operating together (but with split knowledge) to protect sensitive…
  88. dual diversity The simultaneous combining of (or selection from) two independently fading signals, so that the resultant signal can be detected through the use of space…
  89. dual homing The connection of a terminal so that it is served by either of two switching centers.
  90. dual in-line package (DIP) An electronic package with a rectangular housing and a row of pins along each of two opposite sides.
  91. dual in-line package switch See DIP switch.
  92. dual seizure The condition that occurs when, in both-way operation, two exchanges attempt to seize the same circuit at approximately the same time. [T1.
  93. Dual Source Two contractors producing the same components or end items for the same program.
  94. dual-homed gateway Synonym dual-homed host.
  95. dual-homed Host A general-purpose computer system that has at least two network interfaces.
  96. dual-precedence message A message that contains two precedence designations. Note: Usually the higher precedence message is for all action addressees and the lower for all…
  97. dual-tone multifrequency (DTMF) signaling In telephone systems, multifrequency signaling in which standard set combinations of two specific voice band frequencies, one from a group of four low…
  98. dual-use access line A user access line normally used for analog voice communication, but which has special conditioning for use as a digital transmission circuit.
  99. Dual-Use Certificate A certificate that is intended for use with both digital signature and data encryption services.
  100. dub 1. A duplicate copy made in the same format from one recording medium to another. 2. See audio dubbing.