Exam AWS Certified Advanced Networking - Specialty ANS-C01 topic 1 question 218 discussion

Exam question from Amazon's AWS Certified Advanced Networking - Specialty ANS-C01

Question #: 218
Topic #: 1

[All AWS Certified Advanced Networking - Specialty ANS-C01 Questions]

A company has a VPC in the AWS Cloud. The company recently acquired a competitor that also has a VPC the AWS Cloud. A network engineer discovers an IP address overlap between the two VPCs. Both VPCs require access to an AWS Marketplace partner service.

Which solution will ensure interoperability among the VPC hosted services and the AWS Markelplace partner service?

A. Configure VPC peering with static routing between the VPCs. Configure an AWS Site-to-Site VPN connection with static routing to the partner service.
B. Configure a NAT gateway in the VPCs. Configure default routes in each VPC to point to the local NAT gateway. Attach each NAT gateway to a transit gateway. Configure an AWS Site-to-Site VPN connection with static routing to the partner service.
C. Configure AWS PrivateLink to facilitate connectivity between the VPCs and the partner service. Use the DNS name that is created with the associated interface endpoints to route traffic between the VPCs and the partner service.
D. Configure a NAT instance in the VPCs. Configure default routes in each VPC to point to the local NAT instance. Configure an interface endpoint in each VPC to connect to the partner service. Use the DNS name that is created with the associated interface endpoints to route traffic between the VPCs and the partner service.

Show Suggested Answer

Suggested Answer: C 🗳️

by qomtodie at Aug. 27, 2024, 12:34 p.m.

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AzureDP900

6 months ago

C is right This solution will ensure interoperability among the VPC hosted services and the AWS Marketplace partner service while avoiding any IP address conflicts. By using AWS PrivateLink, both VPCs can connect directly to the partner service without exposing their private IP addresses to the internet. The interface endpoints created for each VPC will have unique, private DNS names that can be used to route traffic between the VPCs and the partner service. This solution does not require any additional network configurations or routing changes, as traffic will be automatically routed through AWS PrivateLink.

upvoted 2 times

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woorkim

6 months, 2 weeks ago

C is right! A. VPC peering does not support overlapping IP address ranges. B. A transit gateway does not resolve IP overlap issues. The partner service requires a direct interface endpoint (e.g., via PrivateLink) rather than routing through NAT gateways. D.NAT instances do not solve the overlapping IP address problem between VPCs.

upvoted 1 times

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ArunRav

7 months, 1 week ago

Selected Answer: C

Since the ips are overlapping, VPC peering is out and also TGW is also. Nat instance option is not preferred when you considered IP overlaps. Hence C is the correct answer

upvoted 2 times

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