Yaskawa SmartTrac Ethernet Card - Manual (Page 40)

SMART TRAC Ethernet Card
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Glossary of Terms Technical Manual Smart Trac Ethernet Card
Compact Embedded PC Modules, the PC/104 Specification, Version 2.1, July
1994, PC Consortium.
The first layer of the OSI networking model. This layer provides a physical
connection for transmission of data bits over the network media and between
devices.The layer also maintains data integrity as it moves from source to
destination.
The sixth layer of the OSI network model. This layer translates and converts
data from one format to another as the data moves from one device to another
(i.e. ASCII to EBCDIC).
A device used to regenerate a signal's voltage and retransmit it, allowing longer
network lengths. Unlike bridges, a router does not have the intelligence to
distinguish signals directed to a device on the same segment and instead
retransmits it to all segments on the network. This generates more traffic on the
network than if a bridge were used.
The fifth layer of the OSI networking model. The layer manages connections
between two devices while they are communicating. It has built-in error
correction and recovery. It determines whether all information has been sent or
received between two networked devices.
The manner in which a network is configured, usually one or a combination of
bus, star, ring.
The fourth layer of the OSI networking model. This layer concerns itself with
the delivery of packets transmitted by the Network Layer. This may involve
error control of data to guarantee delivery of the packets.
Acronym for Unshielded Twisted Pair. UTP is a type of cable containing a pair
of wires that are twisted at regular intervals to prevent signal interference with
electrical noise. UTP is commonly used with 10Base-T Ethernet networks.
Physical Layer
Presentation Layer
router
Session Layer
topology
Transport Layer
UTP