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CNPA — Measuring your Platform

8% of the CNPA exam. Sample questions below; the full library has 9 questions tagged to this domain.

Sample questions on Measuring your Platform

Measuring your Platform

Q1. Which of the following concepts is most directly associated with measuring developer productivity and well-being beyond delivery throughput?

Reveal answer and explanations
  1. A CIDR notation

    Incorrect. CIDR notation is unrelated to productivity measurement.

  2. B SLSA levels

    Incorrect. SLSA measures supply chain integrity, not developer productivity.

  3. C OpenTelemetry semantic conventions

    Incorrect. OpenTelemetry semantic conventions structure telemetry data, not productivity metrics.

  4. D SPACE framework

    Correct. The SPACE framework captures a broad view of developer productivity including satisfaction and well-being.

Measuring your Platform

Q2. Which of the following is the STRONGEST signal that a platform initiative is REDUCING cognitive load on application teams?

Reveal answer and explanations
  1. A Application teams spend more time writing custom Kubernetes controllers than they did before the platform existed at all.

    Incorrect. More custom controller work indicates higher cognitive load.

  2. B Application teams adopt paved roads and self-report less time on undifferentiated infra work on DORA-linked surveys.

    Correct. Paved-road adoption paired with self-reported reduction in undifferentiated infra work is a strong combined signal.

  3. C Application teams open more Jira tickets against the platform team per sprint than they did a year ago at the same time.

    Incorrect. More tickets typically indicate unresolved friction, not reduced load.

  4. D Application teams maintain their own forks of every golden-path template to customize each application independently.

    Incorrect. Forking golden paths replicates complexity and increases cognitive load.

Measuring your Platform

Q3. Which DORA metric most directly measures how quickly a team can restore service after an incident?

Reveal answer and explanations
  1. A Lead time for changes

    Incorrect. Lead time measures commit-to-production duration, not recovery.

  2. B Deployment frequency

    Incorrect. Deployment frequency measures how often code is deployed, not recovery speed.

  3. C Mean time to restore

    Correct. MTTR specifically measures how quickly service is restored after an incident or failure.

  4. D Change failure rate

    Incorrect. Change failure rate measures the proportion of deployments causing failure, not recovery time.

Measuring your Platform

Q4. A platform team measures `change failure rate` and reports 3% over the last quarter. According to DORA, this is MOST consistent with which performer tier?

Reveal answer and explanations
  1. A Low performer, which is characterized by change failure rates roughly in the 46 to 60 percent range historically.

    Incorrect. 3% is far below low-performer ranges.

  2. B Medium performer, which typically reports change failure rates closer to 16 to 30 percent across reporting periods.

    Incorrect. 3% is lower than medium-performer ranges.

  3. C Elite performer, which is typically characterized by a change failure rate of approximately 5 percent or less.

    Correct. Elite performers typically exhibit change failure rates around 5% or less in DORA reports.

  4. D Change failure rate cannot be used to categorize performer tiers in any DORA-published analysis or report.

    Incorrect. Change failure rate is one of the four DORA keys and is used in performer tiering.

Measuring your Platform

Q5. Which of the following is one of the four DORA metrics?

Reveal answer and explanations
  1. A Container image size

    Incorrect. Image size is an operational concern, not a DORA metric.

  2. B Deployment frequency

    Correct. Deployment frequency is one of the four DORA metrics alongside lead time, MTTR, and change failure rate.

  3. C Cluster CPU utilization

    Incorrect. CPU utilization is a capacity metric, not a DORA metric.

  4. D Number of open Kubernetes CVEs

    Incorrect. Open CVEs is a security metric, not part of DORA.

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How this domain is tested

Measuring your Platform accounts for 8% of the CNPA exam. Expect questions that test recall of terminology and the ability to read short scenarios — not deep configuration. Use the sample questions above as difficulty calibration; if any feel hard, the rest of our 9-question domain bank will close those gaps.