A service provider is offering a QoS-based transport service. Three classes have been defined in the core, including an Expedited Forwarding (EF) class for VoIP traffic. Which tool should be used at the ingress for the EF class?

Refer to the exhibit.

This OSPF network has just been deployed with four areas, but the hub-and-spoke area frequently flaps. You must fix this design failure. Which two reasons describe why the implementation of link-state summarization will minimize the effect of the instability in this network? (Choose two.)

Refer to the exhibit.

What limitations exist in this design, given that the access layer devices are expected to steadily increase by two devices per week for the next year?

Which statement correctly describes Ansible operations and play books?

Which two features can be used to extend VRFs across a campus? (Choose two.)