You are required to deploy a network service in between two customer sites without modifying IP addresses. You are using Contrail to manage your network services.
How would you accomplish this task?

Which two nodes are part of the Contrail controller role? (Choose two.)

Which two OpenStack components are optional services? (Choose two.)

You have a centrally routed and bridged topology.
In this scenario, routing between subnets would be performed on which two types of devices? (Choose two.)

You are deploying a network infrastructure to provide Network Functions Virtualization to your organization. The architecture must comply with the ETSI NFV framework.
Which two statements are true in this scenario? (Choose two.)