Exam CNX-001 topic 1 question 40 discussion

Actual exam question from CompTIA's CNX-001

Question #: 40
Topic #: 1

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?

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.

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Suggested Answer: D 🗳️

by SuntzuLegacy at May 19, 2025, 2:48 a.m.

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SuntzuLegacy

1 month, 1 week ago

Selected Answer: D

Answer: D. Implement NAT64 on the router between the screened subnet and the internal network. NAT64 is specifically designed to allow IPv6-only hosts to communicate with IPv4-only servers. It translates IPv6 traffic to IPv4 traffic and vice versa, enabling seamless interoperability without requiring configuration changes on either set of servers.

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