PCA (Prometheus Certified Associate) sample exam question with answer 288

Question:
What is a custom exporter in Prometheus?

1. An exporter that exposes Prometheus metrics in a non-standard format
2. An exporter that exposes non-Prometheus metrics in the Prometheus exposition format
3. An exporter that collects and exposes custom metrics that are not available in Prometheus by default
4. An exporter that exposes Prometheus metrics from a remote server

Answer:
C - correct answer
A - is incorrect as the Prometheus exposition format is the standard format for Prometheus metrics
B - is incorrect as Prometheus only supports the exposition format for metrics
D - is incorrect as an exporter that exposes Prometheus metrics from a remote server is called a "remote_write" exporter