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CHAPTER 10: COMPLIANCES AND STANDARDS
10.2 STANDARDS (CONTINUED)
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 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, and 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, were using baseband
transmission, CSMA/CD access, logical bus topology, and coaxial cable. The successor IEEE 802.3 standard provides for integration
into the OSI model and extends the physical layer and media with repeaters and implementations that operate on fiber, thin coax
and twisted-pair cable.
Fast Ethernet
: A 100 Mbps network communication system based on Ethernet and the CSMA/ CD access method.
Full-duplex
: Transmission method that allows two network devices to transmit and receive concurrently, effectively doubling the
bandwidth of that link
Gigabit Ethernet
: A 1000 Mbps network communication system based on Ethernet and the CSMA/ CD access method.
IEEE
: Institute of Electrical and Electronic Engineers
IEEE 802.3
: Defines carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer
specifications
IEEE 802.3ab
: Defines CSMA/CD access method and physical layer specifications for 1000BASE-T Gigabit Ethernet. (Now
incorporated in IEEE 802.3-2005.)
IEEE 802.3u
: Defines CSMA/CD access method and physical layer specifications for 100BASE- TX Fast Ethernet. (Now incorporated
in IEEE 802.3-2005.)
IEEE 802.3x
: Defines Ethernet frame start/stop requests and timers used for flow control on full-duplex links. (Now incorporated in
IEEE 802.3-2005.)
IEEE 802.3z
: Defines CSMA/CD access method and physical layer specifications for 1000BASE Gigabit Ethernet. (Now incorporated
in IEEE 802.3-2005.)
LAN Segment
: Separate LAN or collision domain.
LED
: Light emitting diode used for monitoring a device or network condition
Local Area Network (LAN)
: A group of interconnected computer and support devices
Media Access Control (MAC)
: A portion of the networking protocol that governs access to the transmission medium, facilitating the
exchange of data between network nodes.
MIB
: An acronym for Management Information Base. It is a set of database objects that contains information about the device.
Modal Bandwidth
: Bandwidth for multimode fiber is referred to as modal bandwidth because it varies with the modal field (or core
diameter) of the fiber. Modal bandwidth is specified in units of MHz per km, which indicates the amount of bandwidth supported by
the fiber for a one km distance.
Network Diameter
: Wire distance between two end stations in the same collision domain
RJ-45 Connector
: A connector for twisted-pair wiring.
Switched Ports
: Ports that are on separate collision domains or LAN segments.
TIA
: Telecommunications Industry Association.