What advantages are there in using a hub-and-spoke IPSec VPN configuration instead of a fullymeshed set of IPSec tunnels? (Select all that apply.)

A.
Using a hub and spoke topology is required to achieve full redundancy.

B.
Using a hub and spoke topology simplifies configuration because fewer tunnels are required.

C.
Using a hub and spoke topology provides stronger encryption.

D.
The routing at a spoke is simpler, compared to a meshed node.