Layer 1 - Physical Layer: defines the transmission media between two connecting devices, specifies the data rate(number of bits sent each second), defines the topology of the network, defines a data transmission mode, defines the type of data encoding used in the transmission, Layer 2 - Data-Link Layer: allows the upper layers to access the media using framing, performs access control of the data using the MAC address, Controls data,

OSI Model - Example sort (Layers 1&2)

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