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7. Describe the main role of the communictaion layer, the network-wide state- management layer, and the network-control application layer in an SDN controller Solution 8. Suppose you want to implement a new routing protocol in the SDN control plane. At which layer would you implement the protocol? Explain Solution 9. What are the purposes of the SNMP GetRequest and SetRequest mesages? Solution 10. Define the following terms in the context of SNMP: managing server, managed device, network management agent, and MIB n Base Solution