Which statement about data center access layer design modes is correct?
A.
The access layer is the first oversubscription point in a data center design.
B.
When using a Layer 2 loop-free design, VLANs are extended into the aggregation layer.
C.
When using a Layer 2 looped design, VLANs are not extended into the aggregation layer.
D.
When using a Layer 3 design, stateful services requiring Layer 2 connectivity are provisioned
from the aggregation layer.
E.
The data center access layer provides the physical-level connections to the server resources
and only operates at Layer 3.