Glossary
| Term | Main definition |
|---|---|
| IEEE 802.2 Logical Link Control |
The IEEE standard that provides specifications for the
operation of the Logical Link Control (LLC) sublayer of
the OSI data link layer. The LLC sublayer provides an
interface between the MAC sublayer and the Network
layer.
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| IEEE 802.3 CSMA/CD Networking |
The IEEE standard that specifies a network that uses a
logical bus topology, baseband signaling, and a CSMA/
CD network access method. This is the standard that
defines Ethernet networks. See also Carrier Sense
Multiple Access/Collision Detect.
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|
| IEEE 802.4 Token Bus |
The IEEE standard that specifies a physical and logical
bus topology that uses coaxial or fiber-optic cable and
the token-passing media access method.
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| IEEE 802.5 Token Ring |
The IEEE standard that specifies a logical ring, physical
star, and token-passing media access method based on
IBM
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| IEEE 802.6 Distributed Queue Dual Bus (DQDB) |
Metropolitan Area Network
The IEEE standard that provides a definition and criteria
for a metropolitan area network (MAN), also known as a
Distributed Queue Dual Bus (DQDB).
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| IEEE 802.7 Broadband Local Area Networks |
The IEEE standard for developing local area networks
(LANs) using broadband cabling technology.
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| IEEE 802.8 Fiber-Optic LANs and MANs |
The IEEE standard that contains guidelines for the use
of fiber optics on networks, including FDDI and Ethernet
over fiber-optic cable.
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| IEEE 802.9 Integrated Services (IS) LAN Interface |
The IEEE standard that contains guidelines for the integration
of voice and data over the same cable.
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| Impact test |
Used to determine a cable
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| Impedance |
The total opposition (resistance and reactance) a circuit
offers to the flow of alternating current. It is measured in
ohms and designated by the symbol Z.
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| Impedance match |
A condition where the impedance of a particular cable or
component is the same as the impedance of the circuit,
cable, or device to which it is connected.
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| Impedance matching transformer |
A transformer designed to match the impedance of one
circuit to another.
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| Impedance mismatch |
A condition where the impedance of a particular cable or
component is different than the impedance of the device
to which it is connected.
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| Incident angle |
The angle between the subject light wave and a plane
perpendicular to the subject optical surface.
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| Incoherent light |
Light in which the electric and magnetic fields of photons
are completely random in orientation. Incoherent
light is typically emitted from lightbulbs and LEDs.
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