which vCloud Networking and Security feature will you be setting up to provide the required security?

Your company has just undertaken a new research project where network security is critical. As
you are configuring your private cloud to support this new project, which vCloud Networking and
Security feature will you be setting up to provide the required security?

A.
NAT

B.
Private VLAN

C.
Endpoint

D.
Firewall

Explanation:
http://blogs.vmware.com/vsphere/2013/06/vcloud-networking-and-security-5-1-appfirewall-best-practices.html