Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 314

Which option is a prerequisite for stateful NAT64?

Answer options

• A. IPsec for IPv6
• B. DNS64
• C. Application Layer Gateway
• D. ICMP64

Correct answer: B

Explanation

The correct answer is B, DNS64, as it is essential for translating DNS queries from IPv6 to IPv4, enabling communication in a stateful NAT64 environment. The other options, while relevant to different networking functions, do not serve as prerequisites for stateful NAT64 specifically.