Question 557 of 720
CKS Minimize Microservice Vulnerabilities Practice Question
Which command creates a validating webhook configuration that checks all pods in the cluster?
⚠ Common exam trap
The CKS exam often tests the distinction between mutating and validating webhooks. Candidates may confuse `kubectl create mutatingwebhookconfiguration` with the validating variant, or assume `kubectl apply` with a flag can create a validating webhook.
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
✓
kubectl create validatingwebhookconfiguration my-webhook --from-file=webhook.yaml
`kubectl create validatingwebhookconfiguration` is the specific command to create a ValidatingWebhookConfiguration resource from a YAML file, which can be configured to intercept and validate pod creation requests across the cluster. This resource allows you to define a webhook that checks all pods before they are admitted, enforcing custom validation logic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
kubectl create mutatingwebhookconfiguration my-webhook --from-file=webhook.yaml
Why it's wrong here
This creates a mutating webhook, not a validating one.
- ✗
kubectl run webhook --image=webhook
Why it's wrong here
This runs a pod, not a webhook configuration.
- ✓
kubectl create validatingwebhookconfiguration my-webhook --from-file=webhook.yaml
Why this is correct
Correct.
- ✗
kubectl apply -f webhook.yaml --validating
Why it's wrong here
There is no --validating flag.
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Last reviewed: Jul 4, 2026
This CKS 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 CKS exam.
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