Which statement describes a difference between RADIUS and TACACS+?
a) RADIUS uses a single-factor authentication, while TACACS+ supports multi-factor authentication.
b) TACACS+ encrypts the entire packet, including the payload, while RADIUS only encrypts the password.
c) RADIUS is primarily used for network access control, while TACACS+ is commonly employed for device administration.
d) TACACS+ is an open standard, whereas RADIUS is a proprietary authentication protocol.
