EX280 User And RBAC Management Practice Question
You need to assign a custom ClusterRole named 'operator-viewer' to all authenticated users cluster-wide. Which command accomplishes this?
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 adm policy add-cluster-role-to-group operator-viewer system:authenticated
The 'oc adm policy add-cluster-role-to-group' command binding to the 'system:authenticated' group achieves this.
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 adm policy add-cluster-role-to-group operator-viewer system:authenticated
Why this is correct
Binding the role to the 'system:authenticated' group via a ClusterRoleBinding applies it to all logged-in users cluster-wide.
- ✗
oc adm policy add-cluster-role-to-user operator-viewer --all-users
Why it's wrong here
The '--all-users' flag does not exist for that command.
- ✗
oc set role operator-viewer --cluster --to-all
Why it's wrong here
This command syntax is invalid.
- ✗
oc create clusterrolebinding all-users --clusterrole=operator-viewer --user=system:everyone
Why it's wrong here
'system:everyone' is not a standard group name; 'system:authenticated' is correct.
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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.