An administrator is concerned about the security of the control plane connection between an AOS-CX switch and an ArubaMobility Controller (MC) when implementing user-based tunneling.
How should the administrator protect this traffic?
A . GRE with a pre-shared Key
B . IPSec with a pre-shared key
C . IPSec with a digital certificate
D . PAPI with an MD5 pre-shared key
Answer: D