A service to map fully qualified domain names to IP addresses and vice versa. [2382-pt.35]

1. The set of databases that performs the correspondence between an IP address and the fully qualified domain name.
Note: The domain name system contains a kind of naming tree for IP addresses, hosts, and domains, identifying each Internet node unambiguously. [2382-pt.35]
2. The online distributed database system that (a) is used to map human-readable addresses into Internet Protocol (IP)… (Read More →)

A fixed service, the stations of which are open to public correspondence, for radiocommunications originating and terminating solely at points all of which lie within [. . . the entire United States and certain other geographic areas as specified in 47CFR]. [47CFR]

The land mobile and domestic fixed public services, the stations of which are open to public correspondence. [47CFR]

Term used to describe the relationship between security clearances and security classes or between different security classes. Access rights are normally only granted when a subject dominates an object; information flow is allowed only to a receiving object that dominates the source object [CESG]. See also: Lattice.

In a waveguide that can support more than one propagation mode, the mode that propagates with the minimum degradation, i.e., the mode with the lowest cutoff frequency.
Note: Designations for the dominant mode are TE10 for rectangular waveguides and TE11 for circular waveguides.

1. An implementation-defined relation between the values of MAC labels or Information Labels which satisfies partial order algebraic property [POSIX.6].
2. Security level S1 is said to dominate security level S2 if the hierarchical classification of S1 is greater than or equal to that of S2 and the non-hierarchical categories of S1 include all those of S2 as a subset… (Read More →)

The switch or network from which the subscriber has ported. If the subscriber has ported more than once, the first switch or network to release the subscriber is referred to as the original donor switch or donor network. The original donor switch is the switch to which the call will be routed in the absence of number portability information, as… (Read More →)

An impurity added to an optical medium to change its optical properties.
Note: Dopants are used in optical fibers to control the refractive index profile and other refractive properties of the fiber. [FAA]

The change in the observed frequency (or wavelength) of a wave, caused by a time rate of change in the effective path length between the source and the point of observation.