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Xerox Document Centre Network Installation & Troubleshooting Guide Page 22 - 3
Gl
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ss
a
ry
Glossary
CSMA/CD (Carrier
Sense Multiple
Access/Collision
Detection) Network access method in which nodes contend for the right to send
data. If two or more nodes attempt to transmit at the same time, they
abort their transmission until a random time period of microseconds
has transpired and then attempt to re-send.
DB-9 A standardized connector with 9 pins for Token Ring and serial
connections.
DNS (Domain Name
Service) A TCP/IP protocol for discovering and maintaining network
resource information distributed among different servers.
DOS (Disk
Operating System) The operating system developed by Microsoft and often ported by
computer manufacturers such as IBM to run specifically on their
computers.
EMI/RFI
(Electromagnetic
Interface/Radio
Frequency) A form of “noise” on data transmission mediums that can reduce
data integrity and increase transmission errors.
Ethernet A 10 megabits per second baseband, CSMA/CD network originally
designed by Xerox Corporation.
EtherTalk AppleTalk protocol governing Ethernet transmissions. Also the
Apple Computer Ethernet adapter and drivers. The first
implementation, Phase 1, was replaced by Phase 2 in 1989.
FTP (File Transfer
Protocol) A TCP/IP application protocol governing file transfer.
GUI (Graphical User
Interface) Icon oriented style of screen display designed by Xerox and the
PARC project.
Half Duplex Method of communication where each character sent is echoed back
to its origin.
IEEE (Institute of
Electrical and
Electronics
Engineers) A professional organization within the ISO that assists with the
creation of networking standards.
Internet Connected networks including those of the National Science
Foundation the Advanced Projects Research Agency.