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CKA study material · question 591 of 1000

You want a RoleBinding to cover every ServiceAccount in the qa namespace. Which subject expresses that?

  1. A User named system:serviceaccount:qa
  2. A ServiceAccount named * in namespace qa
  3. A Group named system:serviceaccounts:qa
  4. A Group named system:authenticated:qa
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Answer: C. A Group named system:serviceaccounts:qa

ServiceAccount usernames use the singular system:serviceaccount: prefix; the groups that cover a whole namespace use the plural system:serviceaccounts: form.

Source: Using RBAC Authorization (Kubernetes) — Referring to subjects

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