What is the main function of the Data Link Layer in the OSI model?

The primary function of the Data Link Layer in the OSI model is to facilitate node-to-node data transfer and perform error correction. This layer ensures that data is transmitted reliably between directly connected nodes on a network. It achieves this by packaging raw bits from the Physical Layer into frames, adding necessary headers and trailers that contain control information such as Frame Check Sequences for error detection.

The Data Link Layer operates effectively to manage logical link control and medium access control, making sure that protocols governing data transmission are followed, allowing devices on the same network segment to communicate without interference. By encapsulating and structuring the data, the Data Link Layer plays a crucial role in maintaining the integrity and accuracy of the data being sent across the network.

This function is critical for ensuring proper communication and reliability, which is why the choice highlighting error correction and node-to-node data transfer accurately describes the main role of this layer in the OSI model.