AWS Certified Solutions Architect – Associate (SAA-C02) — Question 340

A company hosts its web application on AWS using seven Amazon EC2 instances. The company requires that the IP addresses of all healthy EC2 instances be returned in response to DNS queries.
Which policy should be used to meet this requirement?

Answer options

• A. Simple routing policy
• B. Latency routing policy
• C. Multi-value routing policy
• D. Geolocation routing policy

Correct answer: C

Explanation

A multivalue answer routing policy allows Amazon Route 53 to return multiple values, such as IP addresses for up to eight healthy resources, in response to DNS queries while performing health checks to exclude unhealthy instances. Simple routing can return multiple IP addresses but cannot perform health checks to filter out unhealthy resources. Latency and geolocation routing policies are used to route traffic based on network performance or geographical location rather than returning all healthy IPs.