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NetComm NCT240 Management Guide Release 1.0
6. Glossary
10BASE-T
IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5
UTP cable.
100BASE-TX
IEEE 802.3u specification for 100 Mbps Fast Ethernet over two pairs of Category 5
UTP cable.
100BASE-FX
IEEE 802.3u specification for 100 Mbps Fast Ethernet over two strands of 50/125,
62.5/125 or 9/125 micron core fiber cable.
1000BASE-T
IEEE 802.3ab specification for Gigabit Ethernet over 100-ohm Category 5 or 5e
twisted-pair cable (using all four wire pairs).
Auto-Negotiation
Signalling method allowing each node to select its optimum operational mode (e.g.,
10 Mbps or 100 Mbps and half or full duplex) based on the capabilities of the node to
which it is connected.
Bandwidth
The difference between the highest and lowest frequencies available for network
signals. Also synonymous with wire speed, the actual speed of the data transmission
along the cable.
Collision
A condition in which packets transmitted over the cable interfere with each other.
Their interference makes both signals unintelligible.
Collision Domain
Single CSMA/CD LAN segment.
CSMA/CD
CSMA/CD (Carrier Sense Multiple Access/Collision Detect) is the communication
method employed by Ethernet, Fast Ethernet, or Gigabit
Ethernet.
End Station
A workstation, server, or other device that does not forward traffic.
Ethernet
A network communication system developed and standardized by DEC, Intel, and
Xerox, using baseband transmission, CSMA/CD access, logical bus topology, and
coaxial cable. The successor IEEE 802.3 standard provides for integration into the
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