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2. What does Peer to Peer communication involve?
A. Each layer communication with the layer below it
B. Each layer communication with layer above it
C. Each layer communicating with adjacent layer in another system
D. Each layer communication with it s corresponding layer in another system
Answer D. Answer C sounds correct also, but adjacent and corresponding are two
different things. The session layer can only communicate with the session layer in
another system for example.
3. Why does the industry use a layered model? Choose all correct
A. When you enhance one layer it doesn t affect the other layers
B. Design and development can be made in a modular fashion
C. Network operations can be simplified
D. Troubleshooting can be simplified.
Answer C D.
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