Observability Concepts Questions
Practice questions for Observability Concepts topic in Prometheus Certified Associate. 36 questions covering this domain.
An SRE wants a monitoring system that still gives useful answers during an outage even if remote storage is unavailable. Which Prometheus trait suppor...
An operator wants a simple built-in signal showing whether each target was reachable on its last scrape before writing more advanced alerts. Which aut...
A service starts adding the label `environment='prod'` to a metric that previously had no `environment` label. What happens in Prometheus?
An application currently exposes separate metrics named `http_responses_200_total` and `http_responses_500_total`. Which redesign follows Prometheus g...
A finance team asks whether Prometheus should be the source of truth for exact per-request billing. What do the official docs say?
A team runs four identical API processes on four scrapeable endpoints. In Prometheus terminology, what is each individual endpoint called?
A mentor explains that Prometheus distinguishes one time series from another even when both use the same metric name. What combination uniquely identi...
A platform team monitors many short-lived and rapidly changing microservice instances. Which Prometheus strength best matches that environment?
A service-level batch job finishes before Prometheus can scrape it directly. Which Prometheus ecosystem component is intended as the intermediary in t...
In Prometheus, "cardinality" refers to:
Where does Prometheus store scraped metric data by default?
When `sum()` aggregates time series that have different label sets — one series has a `region` label and the other does not — what is the result?
Prometheus hierarchical federation allows:
Label names beginning with `__` (double underscore) in Prometheus are:
In Prometheus, a stale marker is:
A Prometheus counter is best described as:
A process exporting `errors_total` restarted, resetting the counter to zero. Which PromQL function correctly accounts for this reset when calculating ...
When a previously scraped target is removed from the Prometheus configuration, what happens to its time series?
Why is Prometheus described as a reliable system to consult during an outage?
A platform team wants to follow one customer request across several services and see each child operation along the path. Which observability signal i...
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