What are two differences of TACACS+ compared to RADIUS?

TACACS+ uses a connectionless transport protocol, whereas RADIUS uses a connection-oriented transport protocol.

TACACS+ encrypts the full packet payload, whereas RADIUS only encrypts the password.

TACACS+ only encrypts the password, whereas RADIUS encrypts the full packet payload.

TACACS+ uses a connection-oriented transport protocol, whereas RADIUS uses a connectionless transport protocol.

TACACS+ supports multiple sessions per user, whereas RADIUS supports one session per user.