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138
G
LOSSARY
broadcast
A message sent to all destination devices on the network.
broadcast storm
Multiple simultaneous broadcasts that typically absorb available
bandwidth and can cause network failure.
cascaded segments
The segments that run up and down the stack by the cascade cables,
to which the Dual Speed Hub 500 units' 10Mbps and 100Mbps
internal segments connect (or are isolated from).
console port
The port on the Dual Speed Hub 500 accepting a terminal or modem
connector. It changes the parallel arrangement of data within
computers to the serial form used on data transmission links. This
port is most often used for dedicated local management.
Ethernet
A LAN specification developed jointly by Xerox, Intel and Digital
Equipment Corporation (DEC). Ethernet networks operate at
10Mbps using CSMA/CD (a collision detection mechanism) to run
over coaxial, twisted pair and fiber optic cabling.
Fast Ethernet
Fast Ethernet operates at 100Mbps and so has 10 times more
bandwidth than Ethernet, enabling it to cope with larger amounts of
traffic; this results in operation 10 times faster than Ethernet. Fast
Ethernet runs over the various 100BASE (cables), such as
100BASE-TX. Fast Ethernet networks operate at 100Mbps and are
based on the 10BASE-T Ethernet CSMA/CD network access method,
an extension to the IEEE 802.3 specification.
full duplex
The ability of a device or line to transmit data simultaneously in both
directions over the same communications link, potentially doubling
the throughput of traffic.
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