AKS1: AcrPull; ID1: Contributor

AKS1 needs to pull images from Azure Container Registry, so AcrPull is the least-privilege registry role for the cluster identity. ID1 requires Contributor in the visible answer area because the referenced technical requirement requires resource changes beyond a read-only or pull-only role. The important distinction is scope: AKS image retrieval should not receive Contributor, while the separate managed identity receives the broader role only for its implementation task. This domain is tested through precise scope control: tenant, subscription, resource, application, and data-plane authorization are not interchangeable. The correct choice applies the smallest identity or governance control that enforces the stated requirement. Options that only add users, create registrations, or provide broad administrator access fail because they do not directly enforce the requested access behavior. The result is a direct exam-style implementation choice: it changes the required security behavior without relying on unrelated monitoring, manual cleanup, or excessive privilege. Official Microsoft source/topic: SC-500 Study Guide > AKS and managed identities; Microsoft Learn > ACR pull role and Azure RBAC.

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