Computing Dictionary
physical layer definition
networking Layer one, the lowest layer in the
OSI seven layer model. The physical layer encompasses details such as electrical and mechanical connections to the network, transmission of
binary data as changing voltage levels on wires or similar concepts on other connectors, and
data rates.
The physical layer is used by the
data link layer.
Example physical layer
protocols are
CSMA/CD,
token ring and bus.
(2004-06-29)
