フリー問題

問題文

A load balancer sits in front of three Mule workers and has to stop sending traffic to a worker whose database connection is broken. What does the application expose so that the balancer can tell them apart?

選択肢

1. A health check endpoint that reports a failing status while the database connection is unreachable.
2. An alert in Anypoint Monitoring that notifies the team while the database connection stays unreachable.
3. A scheduled flow that retries the connection every minute until the database becomes reachable again.
4. A logger component that records a failing entry while the database connection stays unreachable.