A. Data is accessed using NFS or CIFS.
B. Data is accessed at the block level.
C. NAS is referred to as captive storage.
D. Storage devices can be shared between users.
E. A NAS implementation is not as fast as a DAS implementation.

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 provisionedfrom the aggregation layer.
E. The data center access layer provides the physical-level connections to the server resourcesand only operates at Layer 3.