Which feature of Cisco SD-WAN Secure Direct Cloud Access divides user traffic into different zones and VPNs or VRFs?

Refer to the exhibit. An engineer is designing an OSPF solution for a customer. The design must take into consideration:
* Application load balancers D. E. and F are in different geographical locations and are OSPF-enabled.
* Hosts A, B. and C connect to an application through the load balancers using IP address 10.1.1.1/32.
* In the event of a failure of one of the load balancers, hosts must still have access to the application.
Which solution must the engineer choose?
A client is moving to Model-Driven Telemetry and requires periodic updates. What must the network architect consider with this design?
A company uses cloud-based applications for voice and video calls, file sharing, content sharing, and messaging. During business hours, these applications randomly become slow and unresponsive. However, other applications work smoothly with the current applied QoS polices. Which solution must the company choose to resolve the issue?
A company wants to switch from static routing to a dynamic routing protocol to ease the administrative and operational overhead. The network topology is hub and spoke, and the branches use DMVPN back to the hub using two 100 Mbps internet connections. Both links must be used due to spikes in traffic, and routing must take traffic utilization of the links into account.
Also, the branch routers have limited memory and CPU resources.
Which routing protocol and design solution must the company choose?