AWS Certified Solutions Architect – Professional — Question 153

To ensure failover capabilities on an elastic network interface (ENI), what should you use for incoming traffic?

Answer options

• A. A Route53 A record
• B. A secondary private IP
• C. A secondary public IP
• D. A secondary ENI

Correct answer: B

Explanation

The correct answer, B (A secondary private IP), allows for seamless failover as it can be associated with the ENI, ensuring that traffic can be redirected without changing the public IP. Options A and C involve DNS records and public IPs, which do not provide the same level of failover capability. Option D, while related, does not specifically address the requirement for incoming traffic management.