Question

Difficulty: EasyConfiguring Storage Access Controls and Uniform Bucket-Level Access

A cloud administrator is configuring access controls for a Google Cloud Storage bucket and needs to enforce Uniform Bucket-Level Access (UBLA) to meet security compliance standards. Which TWO statements accurately describe the behavior and enforcement when Uniform Bucket-Level Access is enabled on a Cloud Storage bucket?

  1. Access to all objects in the bucket is controlled exclusively through IAM permissions, disabling Object ACLs.Answer
  2. B
    Users can continue to set fine-grained ACL permissions on individual objects within the bucket.
  3. Existing individual object ACL settings are ignored and ACL access requests are revoked in favor of IAM policy evaluations.Answer
  4. D
    Primitive roles such as Owner or Editor must be granted on individual objects to override bucket-level restrictions.

Answer

Access to all objects in the bucket is controlled exclusively through IAM permissions, disabling Object ACLs, and existing individual object ACL settings are ignored in favor of IAM policy evaluations.
Uniform Bucket-Level Access (UBLA) ensures that Cloud Storage evaluates access permissions using Cloud IAM exclusively. When UBLA is enabled, per-object ACL access lists are disabled and ignored, standardizing security management across all objects in the bucket.

Step-by-Step Solution

1
Understand Uniform Bucket-Level Access (UBLA)
Recognize that UBLA unifies access control across Cloud Storage resources to use IAM exclusively.
UBLA disables object-level Access Control Lists (ACLs) to ensure consistent permission management.
2
Evaluate the impact on object ACLs
Identify that object-level ACLs are ignored and cannot be applied when UBLA is active.
This guarantees that access is evaluated solely by IAM roles assigned at the bucket, folder, or project level.

Key Concept

Uniform Bucket-Level Access (UBLA) enforcement and IAM access control
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