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You can find the answers in Appendix A.

1. Which layer chooses and determines the availability of communicating partners along with the resources necessary to make the connection, coordinates partnering applications, and forms a consensus on procedures for controlling data integrity and error recovery?

2. Which layer is responsible for converting frames from the Data Link layer into electrical signals?

3. At which layer is routing implemented, enabling connections and path selection between two end systems?

4. Which layer defines how data is formatted, presented, encoded, and converted?

5. Which layer is responsible for creating, managing, and terminating sessions between applications?

6. Which layer manages the transmission of data across a physical link and is primarily concerned with physical addressing and the ordered delivery of frames?

7. Which layer is used for reliable communication between end nodes over the network and provides mechanisms for establishing, maintaining, and terminating virtual circuits as well as controlling the flow of information?

8. Which layer provides logical addressing that routers use for path determination?

9. Which layer specifies voltage, wire speed, and connector pin-outs and moves bits between devices?

10. Which layer combines bits into bytes and bytes into frames and uses MAC addressing?