Implementing Cisco Collaboration Cloud and Edge Infrastructure (CLCEI) — Question 30

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

Answer options

• A. Internal endpoints cannot use addresses from the private address space.
• B. The NAT ALG cannot inspect the contents of encrypted signaling messages.
• C. NAT ALG introduces jitter in the voice path.
• D. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.

Correct answer: B

Explanation

The correct answer is B because NAT ALG requires access to the signaling information to function properly, but when messages are encrypted, it cannot inspect them. The other options do not accurately describe complications related to NAT ALG and encrypted signaling for voice and video communication.