Software
Crestron
e-Control
®
Appendix A: Glossary
10BaseT
- An Ethernet standard that uses twisted wire pairs.
100BaseTX
- IEEE physical layer specification for 100 Mbps over two pairs of
Category 5 UTP or STP wire.
1000BASE-T -
Provides half-duplex (CSMA/CD) and full-duplex 1000 Mbps Ethernet
service over Category 5 links as defined by ANSI/TIA/EIA-568-A. Topology rules for
1000BASE-T are the same as those used for 100BASE-T. Category 5 link lengths are
limited to 100 meters by the ANSI/TIA/EIA-568-A cabling standard. Only one
CSMA/CD repeater will be allowed in a collision domain.
Adapter -
Printed circuit board that plugs into a PC to add to capabilities or
connectivity to a PC. In a networked environment, a network interface card (NIC) is the
typical adapter that allows the PC or server to connect to the intranet and/or Internet.
Auto-negotiate
- The term is used to automatically determine the correct settings. It is
often used with communications and networking. For example, Ethernet 10/100 cards,
hubs, and switches can determine the highest speed of the node they are connected to
and adjust their transmission rate accordingly.
Backbone
– The part of a network that connects most of the systems and networks
together and handles the most data.
Bandwidth
- The transmission capacity of a given facility, in terms of how much data
the facility can transmit in a fixed amount of time; expressed in bits per second (bps).
Bit
– A binary digit. The value—0 or 1—used in the binary numbering system. Also,
the smallest form of data.
Boot
– To cause the computer to start executing instructions. Personal computers
contain built-in instructions in a ROM chip that are automatically executed on startup.
These instructions search for the operating system, load it, and pass control to it.
Bottleneck
– A traffic slowdown that results when too many network nodes try to
access a single node, often a server node, at once.
Bridge
- A device that interconnects different networks together.
Broadband
- A data-transmission scheme in which multiple signals share the
bandwidth of a medium. This allows the transmission of voice, data, and video signals
over a single medium. Cable television uses broadband techniques to deliver dozens of
channels over one cable.
Browser
- A browser is an application program that provides a way to look at and
interact with all the information on the World Wide Web or PC. The word “browser”
seems to have originated prior to the Web as a generic term for user interfaces that let
you browse text files online.
Cable Modem
- A device that connects a computer to the cable television network,
which in turn connects to the Internet. Once connected, cable modem users have a
continuous connection to the Internet. Cable modems feature asymmetric transfer rates:
around 36 Mbps downstream (from the Internet to the computer), and from 200 Kbps
to 2 Mbps upstream (from the computer to the Internet).
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Crestron e-Control®
Reference Guide – DOC. 6052
