How is internet access provided to a WAN edge router that is connected to a MPLS transport link?

Drag and Drop Question
Drag and drop the steps WAN Edge performs when on-boarded into the Cisco SD-WAN overlay from the left into the order they are completed on the right.

Which two Cisco ISE use cases typically involve the highest level of implementation complexity?
(Choose two.)

A customer has several remote sites connected with their headquarters through microwave links. An engineer must propose a backup WAN solution based on these conditions:

Which backup WAN link type the engineer recommend?

Which are two Cisco recommendations that demonstrates SDA? (Choose two.)