Ads (728x90)

The physical layer Transmission of an unstructured bit stream over a physical link between end systems.
Electrical, mechanical,
procedural and functional specifications,
Physical data rate Distances,
Physical connector,


The lowest, bottom, layer – responsible for the physical connection between devices.
The NIC converts the data (bits) in to transmission signals.
Transmissions may be analogue or digital.
Responsible for the rate of transmission.
Includes all components such as the type of connector (RJ-45, Token Ring, BNC, SC connector)

Devices at this level include NICs, repeaters, hubs and concentrators, Oscilloscope.

Post a Comment