KCNA Cloud Native Application Delivery Practice Question
Which DORA metric measures the percentage of deployments that cause a failure in production?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change Failure Rate
Change Failure Rate is the percentage of changes that result in a failure (e.g., service degradation, rollback). It is one of the four key DORA metrics.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Deployment Frequency
Why it's wrong here
This measures how often deployments occur.
- ✗
Mean Time to Recovery (MTTR)
Why it's wrong here
This measures how long it takes to recover from a failure.
- ✓
Change Failure Rate
Why this is correct
This measures the percentage of changes that result in a failure in production.
- ✗
Lead Time for Changes
Why it's wrong here
This measures the time from commit to deployment in production.
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Same concept, more angles
1 more way this is tested on KCNA
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which DORA metric measures the percentage of deployments that cause a failure in production?
medium- A.Lead time for changes
- B.Mean time to recover (MTTR)
- ✓ C.Change failure rate
- D.Deployment frequency
Why C: Change failure rate is the percentage of deployments that result in degraded service or require remediation.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This KCNA practice question is part of Courseiva's free CNCF certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the KCNA exam.