Your network team is assessing options available to translate IPv6 address to IPv4 addresses. Which of the following is an advantage of NAT64 over NAT-PT as a translation option?

Last Updated on August 1, 2021 by Admin 1

Your network team is assessing options available to translate IPv6 address to IPv4 addresses.

Which of the following is an advantage of NAT64 over NAT-PT as a translation option?

  • DNS64 and NAT64 functions are completely separated
  • DNS64 and NAT64 functions are completely integrated
  • NAT64 only works over an Ethernet network
  • NAT64 will be unable to reconstruct fragments packets if they are fragmented by an intermediate IPv4 router
Explanation:
DNS64 and NAT64 functions are completely separated when using NAT64. In NAT-PT these two functions are tightly coupled, which reduces flexibility and is why NAT-PT has been deprecated, with the IETF proposing NAT64 as its viable successor.

DNS64 and NAT64 functions are not completely integrated in NAT64, so this is not an advantage of NAT64 over NAT-PT as a translation option.

NAT64 works over non- Ethernet networks. It is NAT-PT that does only works on Ethernet networks. Therefore, this is not an advantage of NAT 64 over NAT-PT.

NAT64 can reconstruct fragments packets if they are fragmented by an intermediate IPv4 router. It is NAT-PT that will be unable to reconstruct fragments packets if they are fragmented by an intermediate IPv4 router, so this is not an advantage of NAT 64 over NAT-PT.

Objective:
Infrastructure Services
Sub-Objective:
Describe IPv6 NAT

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