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Physical Layer – (AKA the Hardware Layer)
- This Layer Defines how the Cable is attached to the NIC
- Determines how many pins are used
- Determines function of each pin
- The transmission technique
- The duration of the each impulse
- Responsible for transmitting Bits (zeros and ones) from one computer to another
- Packet sent as an unstructured raw bitstream over physical medium
- Hardware-oriented, establishes and maintains physical link between communication computers
Layer 1