PCA (Prometheus Certified Associate) sample exam question with answer 530

Question:
In Grafana, what visualization type would be ideal to display the current scrape status of several servers alongside their attributes (labels)?

1. Heatmap
2. Time Series
3. Gauge
4. Table

Answer:
D - is the correct answer. More at visualizations
A - is incorrect as this is an ideal visualization for Prometheus histogram metrics over time
B - is incorrect as we only want to display the current scrape status. The Time Series visualization should only be used when you want to display data over time
C - is incorrect. While a gauge is ideal for displaying the current value of a bounded metric like scrape status, we wish to display the status of several servers. Though Grafana can draw multiple gauges for such situations, it will result in a messy visualization. Additionally, we want to display the status of the servers alongside their attributes. A table is the ideal format for such data as each row represents a server and each column specifies an attribute (label) or the scrape status