Assignment
Pick a layer from the OSI Model. Write 2 - 3 paragraphs that include a description of what the layer does, what level it corresponds to in the TCP Model and what it covers in the real world.
I'm sure I don't have to mention it, but I would be remiss if I didn't: As with every assignment I will give, do not cut and paste information from other sources - I always want your view and your words.