PCA (Prometheus Certified Associate) sample exam question with answer 439

Question:
What is the instance in Prometheus?

1. To represent a single process that can be scraped by Prometheus
2. To represent a collection of processes with the same purpose
3. To attach labels automatically to scraped time series
4. To store a sample in the up time series for availability monitoring

Answer:
A - is correct answer. In Prometheus terms, an endpoint that can be scraped is called an instance, usually corresponding to a single process. The job is a collection of instances with the same purpose, such as an API server with multiple replicated instances