D Delete DA Destination Address DA Directory Agent DA Distribution Automation DA dynamically assigned DAA designated approving authority DAC Destination Address Compression DAC Duplicate Address Confirmation DAC Dynamic Authorization Client DAC discretionary access control DAD Duplicate Address Detection DAG Directed Acyclic Graph DAM Destination Address Mode DAMA Demand Assignment Multiple Access DAO Destination Advertisement Object DAP Directory Access Protocol DAP Division Advisory Panel DAPI Destination Access Point Identifier DAR Duplicate Address Request DARPA Defense Advanced Research Projects Agency DARPA-E Defense Advanced Research Projects Agency -Europe DAS Directory Assistance Service DAS Dynamic Authorization Server DASS Distributed Authentication Security Service DAU DNSSEC Algorithm Understood DBA Dynamic Bandwidth Allocation DBN Domain Border Node DBS direct broadcast satellite DC Data Center DC Disconnect Confirm DC Discontiguous Commands DC Dublin Core DC data-center DCA Defense Communication Agency DCA Defense Communications Agency DCC Data Communications Channel DCCP Datagram Congestion Control Protocol DCCS Distributed Capability Computing System DCD Data Carrier Detect DCE Data Communications Equipment DCE Distributed Computing Environment DCEC Defense Communications Engineering Center DCEP Data Channel Establishment Protocol DCF Dispersion Compensation Fiber DCF Distributed Coordination Function DCIA Distributed Computing Industry Association DCLC delay-constrained lowest-cost DCMI Dublin Core Metadata Initiative DCN Data Communication Network DCO Destination Cleanup Object DCS Digital Command Signal DCS Directly Connected Server DCSC Data Channel Switching Capable DCT Device Control Table DD Discontiguous Data DD Discovery Domain DDA Domain Defined Attribute DDDS Dynamic Delegation Discovery System DDH Decisional Diffie-Hellman DDI Document Delivery Instructions DDN Defense Data Network DDNS Dynamic Domain Name System DDOS distributed denial-of-service DDP Datagram Delivery Protocol DDP Direct Data Placement DDR Data Delivery Ratio DDS Discovery Domain Set DDT Delegated Database Tree DE Designated Expert DE Discard Eligible DEA Data Encryption Algorithm DEA Diameter EAP Answer DEA Diameter-EAP-Answer DEC Digital Equipment Corporation DECT Digital Enhanced Cordless Telecommunications DEI Drop Eligibility Indicator DEK Data Encryption Key DEL Decode Encode Language DEL Decode-Encode Language DELT Dual Ended Loop Test DEN Directory Enabled Networks DER Diameter-EAP-Request DER Distinguished Encoding Rules DES Data Encryption Standard DF Default Forwarding DF Designated Forwarder DF Don't Fragment DFF Depth-First Forwarding DFI DSP Format Identifier DFS Domain Flooding Scope DFZ Default-Free Zone DGE dynamic gain equalization DGIWG Defence Geospatial Information Working Group DH Diffie-Hellman DHAAD Dynamic Home Agent Address Discovery DHCP Dynamic Host Configuration Protocol DHT Distributed Hash Table DHU DS Hash Understood DI Datamover Interface DI Device Identifier DI Direction Indicator DIANA Domain-Insulated Autonomous Network Architecture DIB Directory Information Base DII Defense Information Infrastructure DIO DAG Information Object DIO DODAG Information Object DIO Destination Information Object DIS DODAG Information Solicitation DIS Defense Investigative Service DIS Designated Intermediate System DIS Digital Identification Signal DIS Draft International Standard DIS distributed interactive simulation DISA Data Interchange Standards Association DISA Defense Information System Agency DISA Defense Information Systems Agency DISN Defense Information Systems Network DISP Directory Information Shadowing Protocol DIT Directory Information Tree DJB De-Jitter Buffer DKIM Domain Keys Identified Mail DLC Data Link Connection DLCI Data Link Connection Identifier DLEP Dynamic Link Exchange Protocol DLL Dynamic-Link Libraries DLM Direct Loss Measurement DLP Data loss prevention DLS Data Link Switching DLV DNSSEC Lookaside Validation DM DATA MARK DM Delay Measurement DM Dual Marking DM disconnect mode DMA-PA Dormant Monitoring Agent -Paging Agent DMA-TA Dormant Monitoring Agent -Tracking Agent DMC Disaster Monitoring Constellation DMD Directory Management Domain DMG Default MAC Gateway DMM Delay Measurement Message DMM distributed mobility management DMNP Delegated Mobile Network Prefix DMR Default Mapping Rule DMR Delay Measurement Reply DMS DDoS Mitigation System DMSP Distributed Mail System Protocol DMTF Desktop Management Task Force DMTF Distributed Management Task Force DN Data Network DN distinguished name DN domain name DNA Delivery Network Accelerator DNA Detecting Network Attachment DNA Digital Network Architecture DNA Domain Name Associations DNANS DECnet Network Architecture Naming Service DNCP Distributed Node Consensus Protocol DNF Disjunctive Normal Form DNHR Dynamic non-hierarchical routing DNLC Directory Name Lookup Cache DNP Do Not Publish DNR Do Not Revert DNRD Domain Name Registration Data DNS DNA Naming Service DNS Dependent Neighbor Set DNS Domain Name System DNS Domain Naming System DNT Do Not Track DO DNSSEC OK DO Decompressed Output DOCSIS Data Over Cable Service Interface Specification DOCSIS Data-Over-Cable Service Interface Specifications DOD Department of Defense DODAG Destination-Oriented Directed Acyclic Graph DODIIS Department of Defense Intelligence Information System DOE Department of Energy DOH Destination Option Header DOI Digital Object Identifier DOI Domain of Interpretation DOI Domains of Interpretation DOIC Diameter Overload Indication Conveyance DOIC Diameter Overload Information Conveyance DOM Document Object Model DON Decoding order number DONA Data-Oriented Network Architecture DOS Denial of Service DOS denial-of-service DOTS DDoS Open Threat Signaling DP DNSSEC Policy DP Destination Proxy DPA Disconnect-Peer-Answer DPA Document Printing Application DPD Delegated Path Discovery DPD Duplicate packet detection DPD dead peer detection DPDK Data Plane Development Kit DPI Data Preservation Interest DPI Deep Packet Inspection DPN Data-Plane Node DPNSS Digital Private Network Signaling System DPR Disconnect-Peer-Request DPS DNSSEC Practice Statement DPS distributed programming system DPV Delegated Path Validation DQA Diameter QoS application DQDB Distributed Queue Dual Bus DQDB Distributed-Queue Dual Bus DR Data Receiver DR Delegating Router DR Designated Router DR Discard range DR Disconnect Request DR Disonnect Request DRA DHCPv6 Relay Agent DRARP Dynamic Reverse Address Resolution Protocol DRBG deterministic random-bit generator DRC duplicate request cache DRM Digital Rights Management DRNI Distributed Resilient Network Interconnect DRP DECADE Resource Protocol DRPF Decimal reference publication form DRR Deficit Round Robin DRR Direct Response Routing DRS Digital Reconfiguration Service DS Delay-sensitive DS Delegation Signer DS Differentiated Services DS Directory Synchronisation DS Draft Standard DS data sender DS distribution system DS dual-stack DS0 Digital Signal 0 DSA Digital Signature Algorithm DSA Directory Service Agents DSA Directory System Agent DSAF distribution system access function DSAP Destination Service Access Point DSC Dynamic Service Change DSCP Differentiated Service Code Point DSCP Differentiated Services Code Point DSCP diff-serv code point DSDL Document Schema Definition Language DSE DSA-specific Entry DSE Directory Services Element DSKPP Dynamic Symmetric Key Provisioning Protocol DSL Digital Subscriber Line DSLAM Digital Subscriber Line Access Multiplexer DSLCP Dynamically Switched Link Control Protocol DSLF Digital Subscriber Line Forum DSN Data Sequence Number DSN Delivery Status Notification DSO DNS Stateful Operations DSP Digital Signal Processing DSP Directory System Protocol DSP Domain Specific Part DSR Dynamic Source Routing DSR distributed speech recognition DSRK Domain Specific Root Key DSRK domain-specific root key DSRL Document Schema Renaming Language DSRL Document Semantics Renaming Language DSS Data Sequence Signal DSS Digital Signature Standard DSS Distribution System Service DST Daylight Saving Time DSTM Dual Stack Transition Mechanism DT Decapsulation Throughput DT Discard Type DT Displacement Threshold DTB Delete to Break DTC Digital Transmit Command DTCP Digital Transmission Content Protection DTCP Dynamic Tunnel Configuration Protocol DTD Deactivation Time Delay DTD Document Type Definition DTE Data Terminal Equipment DTI Digital Technology Incorporated DTIC Defense Technical Information Center DTL Designated Transit List DTLS Data Transport Layer Security DTLS Datagram Transport Layer Security DTM Direct Test Mode DTMF Dual Tone Multi Frequency DTMF Dual-Tone Multi Frequency DTMF dual tone multi-frequency DTMF dual-tone multi-frequency DTN Delay Tolerant Networking DTN Delay-Tolerant Networking DTN Delay/Disruption-Tolerant Networking DTN Disruption-Tolerant Networking DTNRG Delay-Tolerant Networking Research Group DTP Data Transfer Protocol DTR Data Terminal Ready DTS DNA Time Service DTS Digital Time Service DUA Directory User Agent DULL Discovery Unsolicited Link-Local DUM Data Use Mine DUPU Destination User Part Unavailable DUT Device Under Test DUY Data Use Yours DVB Digital Video Broadcasting DVE Discrete Voltage Encoding DVMRP Distance Vector Multicast Routing Protocol DVTS Digital Video Transport System DWA Device-Watchdog-Answer DWDM Dense Wavelength Division Multiplexing DWR Device-Watchdog-Request