Which three features does Cisco WAAS provide to enable the consolidation of infrastructure from remote offices into the data center? (Choose three.)

A.
policy-based configuration

B.
auto-discovery of CIFS servers

C.
support for multiple virtual contexts

D.
encryption of traffic between WAE appliances

E.
transparent integration into existing networks

F.
encapsulation of traffic between WAE appliances in GRE tunnels