Glossary: D
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- debAthena — The latest version of the Athena operating environment, based on Ubuntu Linux. Also known as Debathena and Athena 10, although debAthena is the preferred spelling as it emphasizes the Athena part over the Debian part
- Delete (email) — When you delete email it is not immediately erased from the mail server or your local computer. Instead, it is marked for removal. Email marked for removal that has not been purged can be recovered. Deleted email stored on the mail server continues to count towards your until you purge it.
- DHCP — An Internet protocol for automating the configuration of computers that use TCP/IP.
- DID — Direct Inward Dial (DID) number. A DID is a telephone number that can be dialed from outside of MIT, is routed to MIT's telephone network by other carriers on whose network the number may be dialed, and is then connected to an MIT telephone by MIT's voice network. MIT pays for a pool of direct inward dial numbers from outside telecommunications providers.
- DITR — Distributed Information Technology Resources (DITR), MIT IS&T's desk-side support resources
- DITR+ — A VIP help service for senior members of the MIT administration and their staff
- DITR Plus — A VIP help service for senior members of the MIT administration and their staff
- DLC — Departments, Labs, and Centers (DLCs) is used as a catch-all term to indicate an organizational unit at MIT
- DNS — An Internet service that translates domain names into IP addresses.
- DUE — The MIT Dean for Undergraduate Education and associated offices and business units
