Exam 300-101 Question id=444 Infrastructure Services

Ipv6 has just been deployed to all of the hosts within a network, but not to the servers. Which feature allows Ipv6 devices to communicate with Ipv4 servers?

A. NAT
B. NATng
C. NAT64
D. dual-stack NAT
E. DNS64
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NAT64 is a mechanism to allow Ipv6 hosts to communicate with Ipv4 servers. The NAT64 server is the endpoint for at least one Ipv4 address and an Ipv6 network segment of 32-bits (for instance 64:ff9b::/96, see RFC 6052, RFC 6146). The Ipv6 client embeds the Ipv4 address it wishes to communicate with using these bits, and sends its packets to the resulting address. The NAT64 server then creates a NAT-mapping between the Ipv6 and the Ipv4 address, allowing them to communicate.

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