PCA (Prometheus Certified Associate) sample exam question with answer 576

Question:
Which of the following is NOT an alerting best practice?

1. Reserve page (or similar) notifications for high severity issues
2. Alert on every scraped metric to ensure no incidents are missed
3. Alert on symptoms, not causes
4. Ensure all alerts are actionable

Answer:
B - is the correct answer. This is not an alerting best practice since this would likely lead to a large amount of alert notifications, many of which would not be actionable. This would lead to alert fatigue and potentially missing important notifications among the many others. More at practices
A, C, D - are incorrect as these are the alerting best practices