(An endpoint is not responding to a request based on the failure threshold provided. What does Route 53 do once it considers the endpoint unhealthy?)

When Amazon Route 53 determines an endpoint is unhealthy based on a failure threshold (e.g., via

health checks), it terminates the connection attempt to that endpoint and routes traffic to a healthy

alternative, if available. This behavior ensures high availability using routing policies like failover or

latency-based routing. The WGU Cloud Deployment and Operations Study Guide (Section 3.1, Route

53 Health Checks) states, "Route 53 stops routing traffic to an unhealthy endpoint by terminating

connection attempts once the health check failure threshold is exceeded, redirecting to a healthy

resource." Options A, C, and D are not direct actions taken by Route 53 in this scenario.