Data-Link layer

The Data-Link layer contains two sublayers that are described in the IEEE-802 LAN standards:

• Media Access Control (MAC)
• Logical Link Control (LLC)

The Data-Link layer ensures that an initial connection has been set up, divides output data into data frames, and handles the acknowledgements from a receiver that the data arrived successfully. It also ensures that incoming data has been received successfully by analyzing bit patterns at special places in the frames.

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