How is an EPG extended outside of the ACI fabric?

An engineer needs to deploy a leaf access port policy group in ACI Fabric to support the following requirements:
* Control the amount of application data flowing into the system
* Allow the newly connected device to auto-negotiate link speed with the leaf switch Which two ACI policies must be configured to achieve these requirements? (Choose two.)

On which two interface types should a user configure storm control to protect against broadcast traffic? (Choose two.)

A network engineer demonstrates Cisco ACI to a customer. One of the test cases is to validate a disaster recovery event by resetting the ACI fabric to factory and then restoring the fabric to the state it was in before the event. Which setting must be enabled on ACI to export all configuration parameters that are necessary to meet these requirements?

When Cisco ACI connects to an outside Layers 2 network, where does the ACI fabric flood the STP BPDU frame?