Refer to the exhibit. A tunnel was implemented between routers R1 and R2. Which two conclusions can be drawn from the R1 command output? (Choose two.)
- The data that is sent across this tunnel is not secure.
- This tunnel mode is not the default tunnel interface mode for Cisco IOS software.
- This tunnel mode provides encryption.
- A GRE tunnel is being used.
- This tunnel mode does not support IP multicast tunneling.
Explanation: According to the R1 output, a GRE tunnel mode was specified as the tunnel interface mode. GRE is the default tunnel interface mode for Cisco IOS software. GRE does not provide encryption or any other security mechanisms. Therefore, data that is sent across a GRE tunnel is not secure. GRE supports IP multicast tunneling.
Exam with this question: Quiz - Overlay Tunnels
Exam with this question: CCNA 4 Chapter 3 Exam Answers
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