PCA (Prometheus Certified Associate) sample exam question with answer 354

Question:
You are responsible for providing monitoring in your organization which leverages two data centers for its operations. You run one instance of Prometheus and one instance of Blackbox Exporter in each data center. You want to configure a Blackbox Exporter probe that continually checks the health of the Prometheus instance in the opposite data center to ensure monitoring stays available.
Which type of probe should you select for this scenario?

1. TCP
2. HTTP
3. ICMP
4. gRPC

Answer:
B - correct answer. For this question it is important to remember that the Prometheus management API (which provides a health check endpoint) is served over HTTP. More at health-check