[单选题]29、 When configuring an AAA server on the ASA, which communication protocol when configured allows for secure(SSL/TLS) communication between the AAA server and the ASA?当在ASA上配置一个AAA服务器的时候，配置的哪种通信协议允许AAA服务器和ASA之间进行安全的(SSLITLS)通信?
A. UDP
B. SCEP
C. SMTP
D. TCP