A solutions architect has an operational workload deployed on Amazon EC2 instances in an Auto Scaling group. The VPC architecture spans two Availability Zones (AZ) with a subnet in each that the Auto Scaling group is targeting. The VPC is connected to an on-premises environment and connectivity cannot be interrupted. The maximum size of the Auto Scaling group is 20 instances in service. The VPC IPv4 addressing is as follows: VPC CIDR: 10.0.0.0/23 AZ1 subnet CIDR: 10.0.0.0/24 AZ2 subnet CIDR: 10.0.1.0/24 Since deployment, a third AZ has become available in the Region. The solutions architect wants to adopt the new AZ without adding additional IPv4 address space and without service downtime. Which solution will meet these requirements?
Select one answer.
Marked answer: D
Community Discussion
Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.
Chose D1
Option D is the best solution as it allows the adoption of the new AZ without adding additional IPv4 address space and without service downtime. It carefully reallocates the existing subnets' address space across the three AZs while ensuring that the Auto Scaling group maintains healthy instances during each step of the process.
1
you cannot edit a subnets cidr block, D is not possible.
