AWS Certified SysOps Administrator – Associate (SOA-C03) — Question 11

A company uses Amazon Route 53 with latency-based routing across multiple AWS Regions to provide resiliency. The company uses Route 53 with latency-based routing to direct traffic to the nearest Region. Within each Region, weighted A records distribute traffic across multiple Availability Zones.
During a recent update, some Availability Zone endpoints became unhealthy. Route 53 continued to route traffic to the unhealthy endpoints. The company must prevent this issue from occurring in the future.
Which solution will meet this requirement?

Answer options

• A. Add a Route 53 health check for each of the weighted records that received traffic during the recent update.
• B. Increase the weight of Route 53 records in the Region where traffic must go during updates.
• C. Reconfigure all records to use latency-based routing across all Regions uniformly.
• D. Reduce the TTL value for latency-based routing to detect changes more quickly.

Correct answer: A

Explanation

The correct answer is A because adding health checks for the weighted records allows Route 53 to monitor the health of the endpoints and stop routing traffic to those that are unhealthy. Options B and C do not address the underlying issue of unhealthy endpoints, while option D may help with quicker detection but does not prevent the routing to unhealthy endpoints without health checks.