Whichsite-to-siteVPNsolutionallowsCiscorouters,PIXFirewalls,andCiscohardwareclientstoactasremoteVPNclientsinordertoreceivepredefinedsecuritypoliciesandconfigurationparametersfromtheVPNheadendatthecentralsite?()
A. EasyVPN
B. GREtunneling
C. VirtualTunnelInterfaces
DynamicMultipointVPN
E. GroupEncryptedTransportVPN