Denial of Service |
An attack intended to deny authorized users access to systems by overwhelming the attacked systems resources, making them unavailable |
DHCP and Static IP |
Dynamic Host Configuration Protocol is a protocol for assigning dynamic IP addresses to devices on a network. The IP address is doled out to the user by a server or router upon request. Therefore, each time you boot up or come online, you would get a different IP address to use. Static IP addresses are assigned to each network node and do not change dynamically. |
Digital Imaging Communications in Medicine |
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| DiffServ | Differentiated Services — allows for various control mechanisms like PHB (per hop behavior) assigned to every service class—used to smooth traffic. Also classifies traffic levels by using codes in the IP header. Fairly easy to implement. |
DMZ |
Demilitarized Zone are subnets within an organization's network. |
DNS |
Domain Naming System translates domain names to IP addresses. Every time you use a domain name, the DNS must translate into IP addresses. |
DOCSIS |
Data Over Cable Service Interface Specification |
| Dotsam and Netsam | As bloggers stop blogging and abandon their blog sites, their content remains on the web. This is know as dotsam and netsam or the flotsam and jetsam of the detritus left floating in the blogosphere. |
| DPI | Dots per Inch often refers to the printer resolution. Increasing an image's DPI will depict more shades and pitcture details, but the image's dimensions remain the same. A 600 DPI laser printer can print up to 600 dots of picture information per inch. However, a 600 DPI photograph will look the same when printed by a 300 DPI laser printer as a 300 DPI photo would. The 600 DPI phot, however, will have a larger file size. |
| DRM | Digital Rights Management — an umbrella term for the collection of methods used by publishers or copyright owners to control access to and usage of digital data. |
| DTV | Digital Television using SDTV resolution — not be be confused with HDTV |
DVD |
Digital Video Disk |
Resources: IT World Glossary
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