User`s guide

Cayman 3220-H User’s Guide Glossary
December 2000 1
Glossary
10Base2 IEEE 802.3 specification for Ethernet that uses thin coaxial cable to
run at 10 Mbps. Limited to 185 meters per segment. 10Base5 IEEE
802.3 baseband physical layer specification for Ethernet that uses
thick coaxial cable to run at 10 Mbps. Limited to 500 meters per
segment.
10Base-T IEEE 802.3 specification for Ethernet that uses unshielded twisted
pair (UTP) wiring with RJ-45 eight-conductor plugs at each end.
Runs at 10 Mbps.
ACK Acknowledgment. Message sent from one network device to
another to indicate that some event has occurred. See NAK.
access rate Transmission speed, in bits per second, of the circuit between the
end user and the network.
adapter Board installed in a computer system to provide network
communication capability to and from that computer system.
address mask See subnet mask.
ADSL Asymmetric Digital Subscriber Line. Modems attached to twisted
pair copper wiring that transmit 1.5-9 Mbps downstream (to the
subscriber) and 16 -640 kbps upstream, depending on line distance.
ANSI American National Standards Institute.
ASCII American Standard Code for Information Interchange (pronounced
ASK-ee). Code in which numbers from 0 to 255 represent individual
characters, such as letters, numbers, and punctuation marks; used
in text representation and communication protocols.