PCA 試験問題を無料オンラインアクセス

Which metric type uses the delta() function?

• A.Gauge
• B.Info
• C.Histogram
• D.Counter

What is the minimum requirement for an application to expose Prometheus metrics?

• A.It must be compiled for 64-bit architectures.
• B.It must be exposed to the Internet.
• C.It must run on Linux.
• D.It must be able to serve text over HTTP.

How can you select all the up metrics whose instance label matches the regex fe-.*?

• A.up{instance="fe-.*"}
• B.up{instance~"fe-.*"}
• C.up{instance=~"fe-.*"}
• D.up{instance=regexp(fe-.*)}

What is api_http_requests_total in the following metric?
api_http_requests_total{method="POST", handler="/messages"}

• A."api_http_requests_total" is a metric label name.
• B."api_http_requests_total" is a metric type.
• C."api_http_requests_total" is a metric name.
• D."api_http_requests_total" is a metric field.

What is the best way to expose a timestamp from your application?

• A.With a constant metric of value 1 and the timestamp as label.
• B.With a constant metric of value 1 and the timestamp as metric timestamp.
• C.With a gauge that has the timestamp as value.
• D.With a counter that is increased to the correct value.