Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 323

Which method allows IPv4 and IPv6 to work together without requiring both to be used for a single connection during the migration process?

Answer options

• A. dual-stack method
• B. 6to4 tunneling
• C. GRE tunneling
• D. NAT-PT A

Correct answer:

Explanation

The dual-stack method allows devices to maintain both IPv4 and IPv6 protocols simultaneously, facilitating communication during the transition without needing both for a single connection. In contrast, 6to4 tunneling and GRE tunneling are specific techniques for encapsulating one protocol within another, and NAT-PT A is a form of address translation that has been largely deprecated and is not suitable for modern migration strategies.