Google ACE Configuring access and security Practice Question
This ACE practice question tests your understanding of configuring access and security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to ensure that only users from a specific domain (@example.com) can access Cloud Storage buckets in a project. Which two steps should be taken? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Set an organization policy to restrict allowed domains for IAM.
Option C is correct because the organization policy constraint `iam.allowedPolicyMemberDomains` restricts which domains can be used as members in IAM policies across the entire project. This ensures that only principals from @example.com can be granted access to any resource, including Cloud Storage buckets. Option E is correct because a Cloud Identity group containing only @example.com users can be granted IAM roles on the bucket, and membership in the group is controlled by the domain, effectively limiting access to that domain.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use VPC Service Controls to restrict access.
Why it's wrong here
VPC SC controls network perimeter, not user domain.
✗
Enable domain restricted sharing in Cloud Storage settings.
Why it's wrong here
There is no such setting in Cloud Storage.
✓
Set an organization policy to restrict allowed domains for IAM.
Why this is correct
The 'iam.allowedPolicyMemberDomains' policy restricts which domains can be granted roles.
Related concept
Read the scenario before looking for a memorised answer.
✗
Add an IAM condition to the bucket policy to require that the user's domain is @example.com.
Why it's wrong here
While possible, this is not a typical first step and requires careful condition authoring.
✓
Grant access to the bucket to a Cloud Identity group that only includes @example.com users.
Why this is correct
Access to the bucket through a group with domain-restricted membership achieves the goal.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between organization policies (which enforce constraints globally at the resource hierarchy level) and IAM conditions (which are per-binding and evaluated at access time), leading candidates to incorrectly choose IAM conditions as a domain restriction mechanism.
Detailed technical explanation
How to think about this question
The organization policy `iam.allowedPolicyMemberDomains` is evaluated at the resource hierarchy level (organization, folder, project) and rejects any IAM binding that includes a member from a disallowed domain, even if the binding has a condition. This is enforced by the IAM service before any access decision is made. In contrast, IAM conditions using `request.auth.claims.email` or `iam:principalDomain` are evaluated at access time and can be bypassed if the condition is omitted from a binding, making them less robust for domain-wide restrictions.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this ACE question in full detail.
Configuring access and security — This question tests Configuring access and security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set an organization policy to restrict allowed domains for IAM. — Option C is correct because the organization policy constraint `iam.allowedPolicyMemberDomains` restricts which domains can be used as members in IAM policies across the entire project. This ensures that only principals from @example.com can be granted access to any resource, including Cloud Storage buckets. Option E is correct because a Cloud Identity group containing only @example.com users can be granted IAM roles on the bucket, and membership in the group is controlled by the domain, effectively limiting access to that domain.
What should I do if I get this ACE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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