AWS Certified Solutions Architect Professional SAP-C02 Practice Question

The simple routing policy is the default Route 53 routing type and supports a single record set that can contain multiple IP addresses. Route 53 returns all the values to the resolver in random order, allowing clients to retry other addresses. Because simple routing performs no health checks or weighted logic, it satisfies the requirement to avoid additional DNS features while still providing basic retry-based resilience.

Multivalue answer routing also returns multiple addresses, but it is specifically designed to work with (optional) Route 53 health checks and would require one record per address, adding operational overhead. Weighted routing introduces routing metadata (weights) and normally requires separate records for each target, which conflicts with the single-record requirement. Failover routing inherently depends on Route 53 health checks and supports only primary/secondary records, so it cannot represent three active addresses without extra complexity. Therefore, a single A record that uses the simple routing policy and lists all three IP addresses is the correct solution.