Spring Boot Actuator - health checks, metrics, custom endpoints Mock Test

Question 1: CORE SPRING BOOT - Actuator Purpose

What is the primary purpose of Spring Boot Actuator?

Question 2: CORE SPRING BOOT - Enabling Actuator Endpoints

How do you enable Spring Boot Actuator endpoints?

Question 3: CORE SPRING BOOT - Default Actuator Endpoints

Which of the following is a default Spring Boot Actuator endpoint?

Question 4: CORE SPRING BOOT - Health Endpoint Check

Which of the following statements about the `/health` endpoint is correct?

Question 5: CORE SPRING BOOT - Code Snippet (Custom Health Indicator)

What will the following code do in a Spring Boot application?

@Component
public class CustomHealthIndicator implements HealthIndicator {
    @Override
    public Health health() {
        return Health.up().withDetail("customCheck", "All good!").build();
    }
}

Question 6: CORE SPRING BOOT - Code Snippet (Custom Metrics)

What does the following code achieve?

@Component
public class CustomMetrics {
    @Autowired
    private MeterRegistry registry;

    public void incrementRequests() {
        registry.counter("custom.requests").increment();
    }
}

Question 7: CORE SPRING BOOT - Management Port

How can you expose Actuator endpoints on a separate port than the application itself?

Question 8: CORE SPRING BOOT - Code Snippet (Custom Endpoint)

What will this code create in a Spring Boot application?

@Component
@Endpoint(id = "custom")
public class CustomEndpoint {
    @ReadOperation
    public String info() {
        return "Custom Endpoint Info";
    }
}

Question 9: CORE SPRING BOOT - Exposing All Endpoints

By default, which Actuator endpoints are not exposed over HTTP?

Question 10: CORE SPRING BOOT - Best Practices for Actuator

Which of the following is considered a best practice when using Spring Boot Actuator?