Cisco NAC Appliance, formerly Cisco Clean Access (CCA) is a network access control solution
developed by Cisco Systems that helps ensure a secure and clean network environment. Which
Cisco NAC Appliance design is the most scalable architecture for campus LANs because it offers
high performance after posture verification?

A.
In-band real-ip gateway

B.
Layer 2 out-of-band

C.
In-band virtual gateway

D.
Layer 3 centraldeployment