Defense Advanced Research Projects Agency. The U.S. government agency that funded the DARPA Internet
DAS
Dual Attached Station (an FDDI term)
DASG
Data Analysis Services Group of UCAR
DataTrax
The name of a system used by NCAR to monitor physical parameters in the Mesa Lab computer room.
DAVE
Data Analysis and Visualization Engine
DC
Domain Component
DCAA
Defense Contract Audit Agency
DCE
Data Communications Equipment or Distributed Computing Environment. The former refers to devices and connections of a communications network which connect the communication circuit with the end device (data terminal equipment). A modem can be considered DCE. The latter refers to a standard for distributed computing.
Defense Data Network. Comprises the MILNET and several other DOD networks.
DDR
Dial-on-Demand Routing
DE
discard eligible
DEC
Digital Equipment Corporation.
DECnet
Digital Equipment Corporation's proprietary network architecture. VAX computers can communicate using DECnet, and some Suns and ICM PCs can speak DECnet.
DECserver 200
A terminal server manufactured by Digital Equipment Corporation. It has 8 RS/232 serial ports and one AUI port.
DECT
Digital Enhanced Cordless Telecommunication
DELNI
A multiport transceiver manufactured by Digital Equipment Corporation. It has 9 AUI ports, 8 of which are configured to look like a transceiver. The 9th port plugs into a transceiver. Basically the same device as a Cabletron MT-800.
DEMPER
A repeater manufactured by Digital Equipment Corporation. It has one AUI port to connect to a transceiver and 8 10base-2 (thinwire) ports.
A repeater manufactured by Digital Equipment Corporation. It can have 2 AUI ports or one AUI port and one fiber port.
DES
Data Encryption Standard
DFAR
Defense Federal Acquisition Regulations
DFM
Device Fault Manager
DHCP
Dynamic Host Configuration Protocol
DHHA
Denver Health and Hospital Authority, a member of the UPoP.
DIA
Dedicated Internet Access, a term used by Level 3 to describe the Level 3 product that the FRGP purchased to get Internet access.
DICast
Dynamic, Integrated Forecast
DID
Direct Inward Dial
Diff-Serv
Differentiated Services
DIG
Digital Information Group
DIL
Digital Impairment Learning
DIMM
Dual Inline Memory Module
DIR
NCAR Director's Office
DISL
Dynamic ISL
DLC
Digital Loop Carrier
DLCI
Data-Link Connection Identifier
DLESE
Digital Library for Earth System Education
DLR
Design Layout Record - a Telco term for a document that describes the specifics of the endpoints of a circuit.
DMD
Differential Mode Delay
DMI
Desktop Management Interface
DMM
Dual Modem Module (Cisco); Double-density Modem Module (Cisco); Digital MultiMeter
DMTF
Distributed Management Task Force
DMZ
DeMilitarized Zone
DN
Distinguished Name
DNIS
Dialed Number Information Service
DNS
Domain Name System, described in RFC 1035. The distributed name/address mechanism used in the Internet, usually to translate a name (e.g. niwot.scd.ucar.edu) to a corresponding Internet addresses (e.g. 128.125.8.1).
DNS
Domain Name System
DoD
Department of Defense.
DOI
Domain of Interpretation
domain
In the Internet, a part of a naming hierarchy. Syntactically, an Internet domain name consists of a sequence of names (labels) separated by periods (dots), e.g., "tundra.mpk.ca.us."
DOS
Denial Of Service; Disk Operating System
dotted decimal notation
The syntactic representation for a 32-bit integer that consists of four 8-bit numbers written in base 10 with periods (dots) separating them. Used to represent IP addresses in the Internet as in: 192.67.67.20.
DPA
Digital PBX Adapter
DRAM
Dynamic Random-Access Memory (EDO-RAM=Enhanced Data Output DRAM)
DRIP
Duplicate RIng Protocol
Drupal
A web content management software package used by UCAR CISL.
DS1
1.544Mbits/sec
DS3
44.736Mbits/sec
DS
Differentiated Services
DSAC
Desktop Systems Advisory Committee
DSG
Distributed Services Group; also Distributed Systems Group (now part of USS); also Database Services Group
DSL
Digital Subscriber Line
DSLAM
DSL Access Multiplexer
DSPOP
Data Service Point Of Presence
DSRC
David Scaggs Research Center, the NOAA buildings on Broadway
DSS
Decision Support Services
DSS
Digital Signature Standard
DSSS
Direct Sequence Spread Spectrum
DSU
Data Service Unit
DTC
Distributed Terascale Facility (NSF)
DTC
Developmental Testbed Center, a NOAA/NCAR project to promote rapid tranfer of new weather forecast technology from research into operations. The concept is to connect the NOAA Boulder supercomputer with NCAR storage.
DTE
Data Terminal Equipment. The part of a data station that serves as a data source or destination, or both, and that provides data communication. DTE includes terminals, computers, protocol translators and multiplexers.
DTF
Distributed Terascale Facility
DTP
Dynamic Trunking Protocol
DU
University of Denver
DVB/DAVIC
Digital Video Broadcast/Digital Audio Visual Council
