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What are two reasons to create a tunnel?

You are helping a junior network administrator configure and set up a tunnel, and need to ping the remote end of the tunnel to ensure the tunnel will work.

Since the remote end of the tunnel can be pinged without a tunnel in place, the junior network administrator asks why a tunnel needs to be created.

What are two reasons to create a tunnel? (Choose two.)

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

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

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