Which of the following can be identified as two key capabilities of the Virtual Topology System?

The identification of flexible overlays as a key capability of the Virtual Topology System highlights an essential feature in network programmability and virtualization. Flexible overlays enable the abstraction of physical network infrastructure, allowing for the creation of virtual networks that can be customized to meet specific application requirements. This flexibility supports the dynamic management of resources and can significantly enhance network utilization and agility, allowing administrators to easily configure and adjust the network according to evolving needs.

Additionally, flexible overlays facilitate multi-tenancy, allowing different tenants to operate independently while sharing the same underlying physical infrastructure. This is particularly important in cloud environments and data centers where scalability and efficient resource allocation are critical.

In contrast, while security and high availability are important components of networking, they are not as directly tied to the capability of a Virtual Topology System. Static overlays and scalable VXLAN management are also relevant but do not encapsulate the broad, adaptive nature that flexible overlays provide in addressing a variety of deployment scenarios and business needs. Therefore, flexible overlays stand out as a fundamental enabling capability of the system.