AWS Certified Solutions Architect – Professional — Question 583

Mike is appointed as Cloud Consultant in ABC.com. ABC has the following VPCs set- up in the US East Region:
A VPC with CIDR block 10.10.0.0/16, a subnet in that VPC with CIDR block 10.10.1.0/24 A VPC with CIDR block 10.40.0.0/16, a subnet in that VPC with CIDR block 10.40.1.0/24 ABC.com is trying to establish network connection between two subnets, a subnet with CIDR block 10.10.1.0/24 and another subnet with CIDR block 10.40.1.0/24.
Which one of the following solutions should Mike recommend to ABC.com?

Answer options

• A. Create 2 Virtual Private Gateways and configure one with each VPC.
• B. Create 2 Internet Gateways, and attach one to each VPC.
• C. Create a VPC Peering connection between both VPCs.
• D. Create one EC2 instance in each subnet, assign Elastic IPs to both instances, and configure a set up Site-to-Site VPN connection between both EC2 instances.

Correct answer: C

Explanation

A VPC Peering connection is the native AWS solution designed to facilitate private, low-latency routing between separate VPCs without routing traffic over the public internet. Other options like using Internet Gateways or Virtual Private Gateways do not natively connect VPCs together, and deploying EC2 instances to establish a Site-to-Site VPN introduces unnecessary architectural complexity, cost, and management overhead.