Which of the following connects the SDN application layer and SDN controller and allows communication between the network services and business applications?
In the context of Software-Defined Networking (SDN), the Northbound API is the interface that connects the SDN application layer to the SDN controller. It facilitates communication between the network services and business applications. The Northbound API allows applications to communicate their network requirements to the controller, which then translates these requirements into the network configurations necessary to provide the requested services.
References: This information is consistent with the SDN architecture overview provided by the Open Networking Foundation1 and further explained in resources like GeeksforGeeks2 and SDxCentral3, which describe the role of Northbound APIs in SDN environments. These APIs are crucial for enabling the application layer to interact with the control layer, allowing for a dynamic, programmable networking infrastructure.
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