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Trademarks
Any trademarks are acknowledged to be the property of the trademark owners.
Glossary
10BASE-T
Networking standard for twisted-pair cabling capable of carrying data at 10 Mbps.
100BASE-TX
Networking standard for two pairs of high-quality twisted-pair wires carrying data at 100 Mbps.
100BASE-FX
Networking standard for fiber-optic cabling capable of carrying data at 100 Mbps.
auto-
negotiation
Two-part process by which a network device automatically senses the speed and duplex capability of another
device.
Category 5
Networking standard certifying that a copper wire cable can carry data at up to 100 Mbps.
collision
Concurrent Ethernet transmissions from two or more devices on the same segment.
Ethernet
Networking standard for transmitting data at 10 Mbps.
Fast Ethernet
Networking standard for transmitting data at 100 Mbps.
fiber-optic
cable
Cable made of thin glass threads that carry data in the form of light pulses.
full-duplex
A communications technique that allows bi-directional, simultaneous transmission between two devices on a single
segment.
half-duplex
A communications technique in which one device on a segment transmits while the other receives, then the process
is reversed.
IEEE 802
Set of Institute of Electrical and Electronic Engineers standards for defining methods of access and control on
LANs.
LAN
Local area network. A network where computers are connected in close proximity, such as in the same building or
office park. A system of LANs connected at a distance is called a wide-area network (WAN).
MAC address
Media access control address. A hardware address that uniquely identifies each node of a network.
Mbps
Millions of bits per second.
segment
Section of a network bounded by bridges, routers, hubs, or switches. Dividing an Ethernet into multiple segments is
a common way to increase bandwidth on a LAN.
store-and-
forward
Switching feature where the port receives the entire incoming frame and stores it in the buffers while checking for
runts and error frames before forwarding it to the destination port.
switch
Device that filters and forwards packets between LAN segments.
UTP
Unshielded twisted pair; cabling with wires that are twisted around each other. The individual wires are not
insulated.
wire speed
The ability to handle the fastest rate of traffic that a generator can deliver without dropping packets. On a 100 Mbps
connection, wire-speed traffic is 148,809 packets per second using 64-byte frames or 8,127 pac
kets per second using
1,518-byte frames.