Linux Foundation Prometheus Certified Associate - PCA 模擬練習

A. Minor alerts are as important as major alerts and should be treated with equal care.

B. Make sure to generate alerts on every metric of every component of the stack.

C. Have as many alerts as possible to catch minor problems before they become outages.

D. Have as few alerts as possible by alerting only when symptoms might become externally visible.

A. avg_over_time(node_filesystem_avail_bytes[1h])

B. sum(node_filesystem_avail_bytes[1h])

C. avg(node_filesystem_avail_bytes[1h])

D. sum_over_time(node_filesystem_avail_bytes[1h])

A. histogram_quantile()

B. avg_over_time()

C. predict_linear()

D. histogram()

A. Histogram

B. Counter

C. Info

D. Gauge

A. 3

B. 1

C. More than 3

D. 2

A. To receive metrics pushed by short-lived batch jobs for later scraping by Prometheus.

B. To scrape short-lived targets directly.

C. To store metrics long-term for historical analysis.

D. To visualize metrics in Grafana.

A. sum by (cloud) (apiserver_request_total{job="kube-apiserver"})

B. rate(sum by (cloud)(apiserver_request_total{job="kube-apiserver"})[5m])

C. rate(apiserver_request_total{job="kube-apiserver"}[5m]) by (cloud)

D. sum by (cloud)(rate(apiserver_request_total{job="kube-apiserver"}[5m]))