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Exam AWS Certified Solutions Architect - Professional SAP-C02 All Questions

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Exam AWS Certified Solutions Architect - Professional SAP-C02 topic 1 question 522 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional SAP-C02
Question #: 522
Topic #: 1
[All AWS Certified Solutions Architect - Professional SAP-C02 Questions]

A company in the United States (US) has acquired a company in Europe. Both companies use the AWS Cloud. The US company has built a new application with a microservices architecture. The US company is hosting the application across five VPCs in the us-east-2 Region. The application must be able to access resources in one VPC in the eu-west-1 Region.
However, the application must not be able to access any other VPCs.

The VPCs in both Regions have no overlapping CIDR ranges. All accounts are already consolidated in one organization in AWS Organizations.

Which solution will meet these requirements MOST cost-effectively?

  • A. Create one transit gateway in eu-west-1. Attach the VPCs in us-east-2 and the VPC in eu-west-1 to the transit gateway. Create the necessary route entries in each VPC so that the traffic is routed through the transit gateway.
  • B. Create one transit gateway in each Region. Attach the involved subnets to the regional transit gateway. Create the necessary route entries in the associated route tables for each subnet so that the traffic is routed through the regional transit gateway. Peer the two transit gateways.
  • C. Create a full mesh VPC peering connection configuration between all the VPCs. Create the necessary route entries in each VPC so that the traffic is routed through the VPC peering connection.
  • D. Create one VPC peering connection for each VPC in us-east-2 to the VPC in eu-west-1. Create the necessary route entries in each VPC so that the traffic is routed through the VPC peering connection.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by ahrentom at July 8, 2024, 10:06 a.m.
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ahrentom
Highly Voted 4 months, 2 weeks ago
Selected Answer: D
is most cost-effectively
upvoted 5 times
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AzureDP900
Most Recent 1 week, 1 day ago
D meets the requirements most cost-effectively because: Minimum infrastructure: Creating a single VPC peering connection between each of the five VPCs in us-east-2 and the VPC in eu-west-1 requires minimal infrastructure changes. Simple management: This solution requires only one VPC peering connection, making it easier to manage and monitor network connectivity. No need for transit gateway: Since you already have a dedicated VPC in eu-west-1 that needs to be accessed, creating a VPC peering connection is the most straightforward approach.
upvoted 1 times
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AzureDP900
2 weeks, 2 days ago
D is best in the scnerio.
upvoted 1 times
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liuliangzhou
2 months, 1 week ago
Selected Answer: D
VPC peer-to-peer connection is a free service in AWS used for communication between VPCs. AWS's Transit Gateway is mainly used for connecting across multiple VPCs or accounts and does not directly support cross regional VPC connections.
upvoted 2 times
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GDuque
3 months, 3 weeks ago
Selected Answer: A
Taking into account what solutions are possible, only A or B can do it, because we need a transit gateway to connect VPCs that are in different regions. You cannot peer both vpcs directly. And as for costing, A is more economic.
upvoted 1 times
GDuque
3 months, 3 weeks ago
After reconsidering, the answer is D. With Inter-region VPC peering you can peer 2 VPCs in different regions. So, the most economic solution is D.
upvoted 3 times
...
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