AWS Certified Advanced Networking - Specialty
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A company’s development team has developed a new product recommendation web service hosted in a VPC with a CIDR block of 192.168.224.0/19. The service is deployed on Amazon EC2 instances behind an Auto Scaling group, which is configured as the target of a Network Load Balancer (NLB). The company aims to test whether users receiving product recommendations spend more than those who do not, and they need to integrate the recommendation engine with their existing production environment, hosted in a VPC with a CIDR block of 192.168.128.0/17, within 5 days for a major sales event. A network engineer must design a solution to integrate these systems with minimal disruption to the existing environments.
Which solution meets these requirements?
A company’s development team has developed a new product recommendation web service hosted in a VPC with a CIDR block of 192.168.224.0/19. The service is deployed on Amazon EC2 instances behind an Auto Scaling group, which is configured as the target of a Network Load Balancer (NLB). The company aims to test whether users receiving product recommendations spend more than those who do not, and they need to integrate the recommendation engine with their existing production environment, hosted in a VPC with a CIDR block of 192.168.128.0/17, within 5 days for a major sales event. A network engineer must design a solution to integrate these systems with minimal disruption to the existing environments.
Which solution meets these requirements?
Explanation:
The question requires integrating two VPCs with overlapping CIDR blocks (192.168.224.0/19 and 192.168.128.0/17) with minimal disruption. Option A suggests creating a VPC peering connection, which is not possible due to the overlapping CIDR blocks. Option B suggests redeploying the web service into the production VPC, which could be disruptive and time-consuming, especially with a big sales event in 5 days. Option C suggests using a VPC endpoint service, which is not suitable for this scenario as it's typically used for accessing AWS services privately. Option D suggests using a transit gateway, which can handle VPCs with overlapping CIDR blocks by using unique route table entries for each VPC. This solution allows for minimal disruption and quick integration, making it the best choice.