In RBAC, which object binds a Role to a user within a namespace?

In RBAC, which object binds a Role to a user within a namespace?

• A. ClusterRoleBinding
• B. RoleBinding
• C. NamespaceBinding
• D. UserRoleBinding

Answer: (B)

RoleBinding is the construct that binds a Role to one or more subjects (such as a user) within a specific namespace. This ties the permissions defined in the Role to those subjects only inside that namespace, making access scoped to that namespace. If you need a binding at the cluster level, you would use a ClusterRoleBinding, which ties a ClusterRole to subjects across all namespaces. The other options aren’t standard RBAC resources in Kubernetes/OpenShift. So, for granting a Role’s permissions to a user inside a namespace, RoleBinding is the correct object.

RoleBinding is the construct that binds a Role to one or more subjects (such as a user) within a specific namespace. This ties the permissions defined in the Role to those subjects only inside that namespace, making access scoped to that namespace. If you need a binding at the cluster level, you would use a ClusterRoleBinding, which ties a ClusterRole to subjects across all namespaces. The other options aren’t standard RBAC resources in Kubernetes/OpenShift. So, for granting a Role’s permissions to a user inside a namespace, RoleBinding is the correct object.