ANS-C01 Question 361
Single answerAn organization has a multi-Region architecture with critical applications running in both the us-east-1 and eu-west-1 Regions. They need low-latency, high-bandwidth, and secure communication between the VPCs in these Regions to support real-time data replication. Which of the following options will meet these requirements while minimizing operational overhead?
- A
Establish an inter-Region VPC peering connection between the VPCs in us-east-1 and eu-west-1.
- B
Use AWS Transit Gateway with inter-Region peering enabled between the VPCs in us-east-1 and eu-west-1.
- C
Set up an IPsec VPN connection over the internet between the VPCs in us-east-1 and eu-west-1.
- D
Leverage AWS Direct Connect to establish a private connection between the VPCs in us-east-1 and eu-west-1.
Show answer and explanation
Correct answer: B
Explanation
AWS Transit Gateway with inter-Region peering is the best solution for this use case because it supports low-latency, high-bandwidth communication between VPCs across Regions while minimizing operational complexity. It avoids the scalability challenges of VPC peering and the performance limitations of VPN connections. Direct Connect is not suitable for connecting VPCs across Regions.
- A. Incorrect.
Inter-Region VPC peering provides low-latency communication, but it doesn't scale well for complex architectures, and managing multiple peering connections can increase operational overhead.
- B. Correct.
AWS Transit Gateway with inter-Region peering is ideal for scalable, low-latency, and high-bandwidth communication between VPCs across Regions. It also simplifies network management by centralizing connectivity.
- C. Incorrect.
An IPsec VPN connection over the internet can be used for inter-Region communication, but it introduces higher latency and lower bandwidth compared to AWS-native solutions.
- D. Incorrect.
AWS Direct Connect provides dedicated private connectivity, but it is designed for on-premises to AWS communication, not inter-Region VPC connectivity. It would not meet the requirements in this scenario.