PCA 試験問題を無料オンラインアクセス

Which of the following PromQL queries is invalid?

• A.max without (instance, job) up
• B.max by (instance) up
• C.max without (instance) up
• D.max on (instance) (up)

What's "wrong" with the myapp_filG_uploads_total{userid=,,5123",status="failed"} metric?

• A.The status should not be exposed as a label.
• B.The userid should not be exposed as a label.
• C.The metric name should consist of dashes instead of underscores.
• D.The _total suffix should be omitted.

How would you name a metric that tracks HTTP request duration?

• A.request_duration_seconds
• B.http.request_latency
• C.http_request_duration
• D.http_request_duration_seconds

With the following metrics over the last 5 minutes:
up{instance="localhost"} 1 1 1 1 1
up{instance="server1"} 1 0 0 0 0
What does the following query return:
min_over_time(up[5m])

• A.{instance="server1"} 0
• B.{instance="localhost"} 1 {instance="server1"} 0

What is the maximum number of Alertmanagers that can be added to a Prometheus instance?

• A.2
• B.3
• C.1
• D.More than 3