- 업종: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
1. A fundamental operation in an information system (IS) that results only in the flow of information from an object to a subject. 2. A fundamental operation that results only in the flow of information from an object to a subject. 3. A fundamental operation that results only in the flow of information from an object to a subject.
Industry:Telecommunications
1. A functional unit that can only process data of a single security level at a particular time. 2. An information system (IS) device not trusted to properly maintain and separate data to different security levels. 3. A device that is used to process data of a single security level at any one time. Since the device need not be trusted to separate data of different security levels, sensitivity labels do not have to be stored with the data being processed.
Industry:Telecommunications
1. A functional unit in which two or more different technologies are combined to satisfy a given requirement. Note: Examples of hybrids include (a) an electronic circuit having both vacuum tubes and transistors, (b) a mixture of thin-film and discrete integrated circuits, and (c) a computer that has both analog and digital capability. 2. A resistance hybrid. 3. A hybrid coil.
Industry:Telecommunications
1. A formalized set of software calls and routines that can be referenced by an application program in order to access supporting network services. 2. The interface between the application software and the application platform, across which all services are provided. The application program interface is primarily in support of application portability, but system and application interoperability are also supported by a communication API.
Industry:Telecommunications
1. A formal state-transition model of a computer security policy that describes a formal set of access controls based on information sensitivity and subject authorizations. . 2. A formal state transition model of computer security policy that describes a set of access control rules. In this formal model, the entities in a computer system are divided into abstract sets of subjects and objects. The notion of a secure state is defined and it is proven that each state transition preserves security by moving from secure state to secure state; thus, inductively proving that the system is secure. A system state is defined to be "secure" if the only permitted access modes of subjects to objects are in accordance with a specific security policy. In order to determine whether or not a specific access mode is allowed, the clearance of a subject is compared to the classification of the object and a determination is made as to whether the subject is authorized for the specific access mode. The clearance/classification scheme is expressed in terms of a lattice. See also: Lattice, Simple Security Property, *-Property.
Industry:Telecommunications
1. A formal set of conventions governing the format and control of interaction among communicating functional units. Note: Protocols may govern portions of a network, types of service, or administrative procedures. For example, a data link protocol is the specification of methods whereby data communications over a data link are performed in terms of the particular transmission mode, control procedures, and recovery procedures. 2. In layered communications system architecture, a formal set of procedures that are adopted to facilitate functional interoperation within the layered hierarchy. 3. A set of rules and formats, semantic and syntactic, permitting information systems (IS's) to exchange information. 4. A set of semantic and syntactic rules that determine the behavior of entities in performing communication functions.
Industry:Telecommunications
1. A file system that is distributed over a computer network. 2. A file system, on a single computer, that contains the low-level networking files for an entire network.
Industry:Telecommunications
1. A field with certain signaling network management messages, which indicates the particular signaling link to which the message refers among those interconnecting the two involved signaling points. 2. A field in signaling link test message as well as in some signaling network management messages that indicates the particular signaling link, interconnecting the two involved signaling points, to which the message refers.
Industry:Telecommunications
1. A duplicate copy made in the same format from one recording medium to another. 2. See audio dubbing.
Industry:Telecommunications
1. A document represented by a software file that is composed of more than one element; e.g., text, graphics, voice, video. 2. The software file itself.
Industry:Telecommunications
