Which two protocols are used in a server-based AAA deployment? (Choose two.)

A.
RADIUS

B.
TACACS+

C.
HTTPS

D.
WCCP

E.
HTTP

Explanation:
Remote Security Database Standards Supported by Cisco
Several remote security database standards have been written to provide uniform access control
for network equipment and users. A variety of applications have been developed as shareware
and as commercial products to conform to the standards.
Cisco network equipment supports the three primary security server protocols: TACACS+,
RADIUS, and Kerberos. TACACS+ and RADIUS are the predominant security server protocols
used for AAA with network access servers, routers, and firewalls. These protocols are used to
communicate access control information between the security server and the network equipment.
Cisco has also developed the CiscoSecure ACS family of remote security databases to support
the TACACS+ and RADIUS protocols.
Reference: http://www.ciscopress.com/articles/article.asp?p=25471&seqNum=6