You configure and set up a tunnel, and need to ping the host at the remote end of the tunnel to ensure the tunnel will work. The remote end of the tunnel can be pinged without a tunnel in place. What are two good reasons to create a tunnel? (Choose two.)

A.
Tunnelling ensures privacy of data through encryption.

B.
Tunnelling allows Ethernet packets to be encapsulated in IPv6 packets.

C.
Tunnelling allows for IPv6 datagrams to be routed within IPv4 datagrams.

D.
Tunnelling results in faster routing because the router has fewer headers to inspect.

E.
Tunnelling allows for IPv6 networks to be routed over IPv4 network infrastructures.