What are common data center networking issues that are currently experienced in the industry?
(Select two.)

A.
High availability configurations require increasingly diverse geographic locations.

B.
Fibre Channel over Ethernet (FCoE) technology requires extensive administrator training.

C.
Hierarchical networks have limited scalability.

D.
New network switches have limited NPIV support.

E.
Adding, changing, or moving networks are time-consuming tasks.