10 points: Twilight Sparkle is writing a letter to send to Princess Celestia via Pony Express (not dragon). She writes on a scroll, puts the scroll in a case, and writes Celestia's address in Canterlot on the case. Princess Celestia receives the case, opens it up to find the scroll, and reads it. How many layers does their protocol have?

0 points: According to the principles of Protocol Layering, what must be true about two objects under the same layer?

0 points: Pinkie Pie invents a protocol. The protocol consists of taking a letter written on heat-and-moisture-resistant paper and baking it in a cupcake. Naturally, the heat-and-moisture-resistant paper's message is encrypted. The different layers are: Text, Security (handles the encryption), and Baking (bakes the cupcake around the paper). Which layer handles the decrypting?

10 points: Which layer of Pinkie Pie's protocol handles the eating of the cupcake to find the letter?

0 points: Which TCP/IP layer is lowest?

10 points: Which TCP/IP layer is highest?