| (I) Security usage: An environment or context that is defined by a
security policy, security model, or security architecture to
include a set of system resources and the set of system entities
that have the right to access the resources. (See: domain of
interpretation, security perimeter.)
(I) Internet usage: That part of the Internet domain name space
tree [R1034] that is at or below the name the specifies the
domain. A domain is a subdomain of another domain if it is
contained within that domain. For example, D.C.B.A is a subdomain
of C.B.A. (See: Domain Name System.)
(O) MISSI usage: The domain of a MISSI CA is the set of MISSI
users whose certificates are signed by the CA.
(O) OSI usage: An administrative partition of a complex
distributed OSI system.
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