PCA (Prometheus Certified Associate) sample exam question with answer 247

Question:
Which of the following can be used to apply metadata exposed via the various Prometheus service discovery methods as labels on scraped targets?

1. meta_relabel_configs
2. relabel_configs
3. static_configs
4. metric_relabel_configs

Answer:
B - is the correct answer
A - there is no such thing called meta_relabel_configs in Prometheus
C - static_configs are not a service discovery method and thus do not expose any metadata. Nor can they apply metadata from service discovery methods as labels
D - metric_label_configs operate on metrics, not targets