Final answer:
In Cisco's SDA, Applications are typically located north of the DNA Center controller. They use the controller's APIs for integration and orchestration. The overlay and underlay networks, as well as the fabric, are part of the managed infrastructure itself.
Step-by-step explanation:
In the context of Cisco's Software-Defined Access (SDA), the DNA Center serves as the central controller, providing a centralized point for managing the network. When discussing components that are typically located 'north' of the DNA Center, this generally refers to higher-level services and systems that integrate or communicate with the DNA Center for network management, monitoring, and automation purposes.
Applications are the correct answer to the question. They typically reside north of the DNA Center and may include various network services and monitoring tools that leverage the API capabilities of the controller for integration and service orchestration.
In contrast, the overlay network, underlay network, and fabric are aspects of the actual network infrastructure being managed. The underlay network refers to the physical infrastructure, the overlay is the virtual network built on top of the underlay, and the fabric is an architectural component within SDA that provides connectivity between network devices.