EX280 Application Deployment And Lifecycle Practice Question
You have modified a set of Kubernetes manifests using Kustomize and want to preview the exact output that will be applied to your OpenShift cluster without actually executing the changes. Which command should you run?
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
✓
oc kustomize .
The 'oc kustomize' command builds the Kustomize overlay and outputs the resulting raw manifests to stdout.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
oc diff -f kustomization.yaml
Why it's wrong here
'oc diff' compares live cluster state against manifests, but requires rendered output when using Kustomize overlays.
- ✓
oc kustomize .
Why this is correct
'oc kustomize' processes the kustomization.yaml file and prints the generated manifests to standard output.
- ✗
oc convert -k .
Why it's wrong here
'oc convert' is used for converting API versions, not for building Kustomize targets.
- ✗
oc apply -k . --dry-run=client
Why it's wrong here
While 'oc apply -k' with dry-run works, 'oc kustomize' is specifically built to output the rendered Kustomize overlay directly.
About these practice questions
This EX280 question is part of Courseiva's 509-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Red Hat exam blueprint
This EX280 practice question is part of Courseiva's free Red Hat 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 EX280 exam.