AWS Certified Solutions Architect – Associate (SAA-C02) — Question 233

Management has decided to deploy all AWS VPCs with IPv6 enabled. After some time, a solutions architect tries to launch a new instance and receives an error stating that there is not enough IP address space available in the subnet.
What should the solutions architect do to fix this?

Answer options

• A. Check to make sure that only IPv6 was used during the VPC creation.
• B. Create a new IPv4 subnet with a larger range, and then launch the instance.
• C. Create a new IPv6-only subnet with a large range, and then launch the instance.
• D. Disable the IPv4 subnet and migrate all instances to IPv6 only. Once that is complete, launch the instance.

Correct answer: B

Explanation

The correct answer is B because creating a new IPv4 subnet with a larger range will provide additional IP addresses needed for the instance launch. Option A is incorrect as it doesn't address the existing IP address space issue. Option C, while it creates a new subnet, does not solve the immediate problem of needing IPv4 addresses. Option D is not a viable solution as it would require migrating all instances to IPv6, which is unnecessary for this scenario.