CompTIA DataX (CNX-001) — Question 36

A network engineer adds a large group of servers to a screened subnet and configures them to use IPv6 only. The servers need to seamlessly communicate with IPv4 servers on the internal networks. Which of the following actions is the best way to achieve this goal?

Answer options

• A. Add IPv6 to the network cards on the internal servers so they can communicate with the screened subnet.
• B. Set up a bridge between the screened subnet and internal networks to handle the conversion.
• C. Change the servers in the screened subnet from IPv6 addresses to IPv4 addresses.
• D. Implement NAT64 on the router between the screened subnet and the internal network.

Correct answer: D

Explanation

The correct answer is D because NAT64 allows IPv6-only clients to communicate with IPv4 servers by translating between the two protocols. Option A is incorrect as it does not facilitate communication with IPv4 servers. Option B would not effectively convert traffic between IPv4 and IPv6. Option C is not viable since it contradicts the requirement of using IPv6 exclusively.