What differences exist between IPsec VPNs created with L$2$TP and with IPsec alone?

Each correct answer represents a complete solution. Choose two.

L$2$TP supports more protocols.

Replacing L$2$TP with IKEv$2,$ which is a part of the IPsec framework, increases performance and firewall traversal.

Without L$2$TP$,$ IPsec alone requires a higher number of UDP port numbers to achieve the same functionality.

D $$ IPsec uses RADIUS to replace the authentication features afforded by L$2$TP$.$

E $$ L$2$TP offloads authentication functionality from IPsec, resulting in the ability of IPsec to concentrate only on encryption.