Refer to the exhibit. Which three Cisco IOS features can be used on the VPN gateways (Cisco
IOS routers) to implement high availability for remote-access IPsec VPN? (Choose three.)
A.
Dynamic VTIs
B.
Reverse Route Injection (RRI)
C.
VPN clustering
D.
Dead Peer Detection (DPD)
E.
cooperative key servers
F.
virtual contexts