A company is managing a large-scale workload involving thousands of Amazon EC2 instances within a VPC comprising both public and private subnets. The public subnets are configured with a route to an existing internet gateway for 0.0.0.0/0, while the private subnets route 0.0.0.0/0 through an existing NAT gateway. To enhance security and network capabilities, a solutions architect is tasked with transitioning all EC2 instances to utilize IPv6. Importantly, EC2 instances in the private subnets should remain inaccessible from the public internet. What measures should the solutions architect implement to fulfill these objectives? | AWS Certified Solutions Architect - Professional Quiz