Practice Test Geeks(PCA) Prometheus Certified Associate Practice Test
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PCA Service Discovery & Configuration Flashcards

6 cards from real PCA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which Prometheus service discovery mechanism discovers targets using Kubernetes API watch calls?

    Answer: kubernetes_sd_config

    `kubernetes_sd_config` uses the Kubernetes API to discover pods, services, endpoints, ingresses, and nodes as scrape targets.

  2. In Prometheus file-based service discovery, what file formats are supported?

    Answer: JSON and YAML

    Prometheus `file_sd_config` accepts target group files written in either JSON or YAML format.

  3. How frequently does Prometheus reload file-based service discovery files by default?

    Answer: Immediately via inotify/fsnotify

    Prometheus uses filesystem notifications (inotify on Linux) to detect file_sd file changes and reloads them immediately without waiting for a timer.

  4. What is the purpose of the `relabel_configs` section in a Prometheus scrape_config?

    Answer: Transform or filter discovered target labels before scraping

    `relabel_configs` runs a pipeline of label transformations on discovered target metadata, controlling which targets are scraped and how they are labeled.

  5. Which relabeling action drops a target so Prometheus does not scrape it?

    Answer: drop

    The `drop` action in relabel_configs causes Prometheus to skip any target whose labels match the configured regex.

  6. What meta-label does Prometheus kubernetes_sd_config expose for a pod's namespace?

    Answer: __meta_kubernetes_pod_namespace

    `__meta_kubernetes_pod_namespace` is the meta-label containing the Kubernetes namespace of a discovered pod target.