AWS Certified Solutions Architect – Professional — Question 200

In Amazon ElastiCache, which of the following statements is correct?

Answer options

• A. When you launch an ElastiCache cluster into an Amazon VPC private subnet, every cache node is assigned a public IP address within that subnet.
• B. You cannot use ElastiCache in a VPC that is configured for dedicated instance tenancy.
• C. If your AWS account supports only the EC2-VPC platform, ElastiCache will never launch your cluster in a VPC.
• D. ElastiCache is not fully integrated with Amazon Virtual Private Cloud (VPC).

Correct answer: B

Explanation

Option B is correct because ElastiCache cannot operate in a VPC that has dedicated instance tenancy settings. The other options are incorrect as they misrepresent how ElastiCache works with VPCs and their configurations, such as public IP assignments and EC2-VPC platform support.