Implementing Cisco Collaboration Cloud and Edge Infrastructure (CLCEI) — Question 76

Cisco Collaboration endpoints are exchanging encrypted signaling messages. What is one complication in implementing NAT ALG for voice and video devices?

Answer options

• A. NAT ALG is not compatible with the H.323 signaling protocol.
• B. NAT ALG introduces latency in the media path.
• C. The NAT ALG cannot inspect the contents of encrypted signaling messages.
• D. NAT ALG requires the use of NAT reflection, which may not be supported on all firewalls.

Correct answer: C

Explanation

The correct answer is C because NAT ALG is unable to analyze encrypted signaling messages, limiting its functionality in managing NAT for these types of communications. The other options discuss issues that, while potentially relevant, do not specifically pertain to the limitations imposed by encrypted signaling.