How to restrict VPC Service Controls to a specific folder?
You manage a Google Cloud organization with many projects located in various regions around the world. The projects are protected by the same Access Context Manager access policy. You created a new folder that will host two projects that process protected health information (PHI) for US-based customers. The two projects will be separately managed and require stricter protections. You are setting up the VPC Service Controls configuration for the new folder. You must ensure that only US-based personnel can access these projects and restrict Google Cloud API access to only BigQuery and Cloud Storage within these projects. What should you do?
Community Votes
83% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
This question tests the configuration of VPC Service Controls perimeters within an Access Context Manager policy
To enforce stricter access controls like geographic restrictions and limited API access for specific projects
Choosing A (creating a scoped access policy) is a common error because test-takers confuse delegation needs with the fundamental requirement of applying service perimeters for security restrictions.
Community Discussion (7 comments)
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Expert Analysis
Why the Answer Is Correct
Option C is correct because VPC Service Controls are configured within an Access Context Manager access policy. By editing the organization-level policy, you can create a new service perimeter or modify an existing one to specifically include the new folder. This allows you to apply the required US-based IP restrictions and limit API access to only BigQuery and Cloud Storage without impacting the configuration of other projects outside this perimeter.Why the Other Options Are Wrong
Option A is incorrect because creating a scoped access policy is primarily for delegating administration, not strictly necessary for applying VPC Service Controls security rules. Option B is incorrect because Identity Aware Proxy (IAP) manages access to web apps and VMs, not the broad API access restrictions required for BigQuery and Cloud Storage. Option D is incorrect because Cloud Interconnect or VPN provides network connectivity but does not enforce the specific API access or geographic personnel restrictions mandated by the scenario.Community Comment Notes
The community strongly supports Option C, noting that editing the policy allows for the creation of a specific security boundary (service perimeter) around the PHI data. Commenters clarified that adding the folder to the policy does not automatically affect other projects, addressing the misconception raised in Comment [2]. The consensus is that the organization-level policy is the correct place to define these perimeters for centralized control.Official Reference
Exam Strategy
Remember that "editing the access policy" in the context of VPC Service Controls usually means defining or modifying a service perimeter within that policy