EX280 Cluster Installation And Management Practice Question
An administrator needs to perform an offline (disconnected) upgrade of an OpenShift 4.14 cluster where nodes have no direct internet access. Which resource must be configured in the cluster to supply the release payload images from a local mirror registry?
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
✓
ImageContentSourcePolicy (or ImageTagMirrorSet)
In a disconnected environment, an ImageContentSourcePolicy (or ImageTagMirrorSet in newer versions) is configured to redirect image pull requests from official repositories to a local mirror registry.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ClusterVersion mirror override parameter
Why it's wrong here
ClusterVersion does not take direct mirror override parameters; registry redirection is handled at the container runtime level via ICSP/ITMS.
- ✗
MachineConfig registry redirection file
Why it's wrong here
While MachineConfig could write files, container runtime image mirroring is natively managed by ICSP/ITMS resources.
- ✓
ImageContentSourcePolicy (or ImageTagMirrorSet)
Why this is correct
ImageContentSourcePolicy / ImageTagMirrorSet maps registry domains to local mirror registries for disconnected environments.
- ✗
OperatorGroup mirror setting
Why it's wrong here
OperatorGroup handles namespace scoping for OLM, not image registry mirroring.
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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.