[&] Which of the following required GRE configuration components can be borrowed from another interface on the same, local router? (Select the best answer)
- Tunnel source address -- Correct
- Tunnel protocol ID
- Tunnel destination address
- Tunnel sequence number

[&] Within a packet capture, where would one typically find the GRE header? (Select the best answer)
- GRE doesn't utilize a unique header
- Directly after the first Layer-3 header -- Correct
- Directly in front of the user data
- Directly after the Layer-2 header
- Just before the Layer-4 header

[&] Which of the following is something that GRE tunnels can natively provide? (Select the best answer)
- Data integrity for both IPv4 and IPv6
- Anti-replay capabilities for IPv4 traffic
- Authentication of IPv6 packets
- Encapsulation of IPv6 packets within IPv4 headers -- Correct
- Encryption of IPv4 packets