A company wants to authenticate communications between SDN applications and the HP VAN SDN
Controller using the company’s existing network authentication server. What is one of the components that
the authentication server requires to authenticate these applications?

A.
Terminal Access Controller Access-Control System (TACACS)

B.
RADIUS protocol

C.
X-Auth-Token

D.
LDAP Pluggable Authentication Modules (PAM)

Explanation: