A Layered Approach to Computer Networks - nptel - Indian Institute ...
A Layered Approach to Computer Networks - nptel - Indian Institute ...
A Layered Approach to Computer Networks - nptel - Indian Institute ...
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<strong>Computer</strong> <strong>Networks</strong> Prof. Hema A Murthy<br />
<strong>Indian</strong> <strong>Institute</strong> of Technology Madras<br />
Layers and their functions<br />
• Data Link Layer:<br />
– convert it <strong>to</strong> a line that appears free of<br />
undetected transmission errors <strong>to</strong> the layer<br />
above it.<br />
• data frames, ack frames<br />
– handshaking between transmitter, receiver<br />
– control access <strong>to</strong> the shared channel
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