what are responsibilities of data link lyer in osi model? explain
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The Data Link layer transforms a raw transmission facility into a line that appears free of undetected transmission errors to the network layer and is responsible for node-to-node delivery. It makes error-free the physical layer appear to the upper layer (network layer).
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The data link layer is the second layer in the OSI Model. The three main functions of the data link layer are to deal with transmission errors, regulate the flow of data, and provide a well-defined interface to the network layer. ... The protocols are the rules required to pass data successfully to the next layer.
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