- A
compute.networkAdmin on the host project.
Why wrong: Overly broad; only specific permissions are needed.
- B
compute.subnetworks.use on the host project subnet.
Why wrong: Also requires compute.addresses.use on the specific IP address.
- C
compute.instances.create on the service project.
Why wrong: This does not grant access to Shared VPC resources.
- D
compute.subnetworks.use and compute.addresses.use on the subnet and static IP.
These permissions allow using the subnet and reserving the specific IP.
Question 650 of 1,000
Google PCA Manage and provision cloud infrastructure Practice Question
This PCA practice question tests your understanding of manage and provision cloud infrastructure. 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 uses a Shared VPC hosted in a common project (host project) to centralize network management. A service project team needs to create a Compute Engine instance with a specific static internal IP address from the Shared VPC subnet. What IAM permissions should be granted to the service project's Compute Engine default service account?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
compute.subnetworks.use and compute.addresses.use on the subnet and static IP.
Option D is correct because when a service project creates a Compute Engine instance with a specific static internal IP from a Shared VPC subnet, the service project's Compute Engine default service account needs both `compute.subnetworks.use` permission on the subnet (to allow using the subnet) and `compute.addresses.use` permission on the specific static internal IP address (to reserve and use that address). These permissions must be granted at the host project level for the service account.
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.
- ✗
compute.networkAdmin on the host project.
Why it's wrong here
Overly broad; only specific permissions are needed.
- ✗
compute.subnetworks.use on the host project subnet.
Why it's wrong here
Also requires compute.addresses.use on the specific IP address.
- ✗
compute.instances.create on the service project.
Why it's wrong here
This does not grant access to Shared VPC resources.
- ✓
compute.subnetworks.use and compute.addresses.use on the subnet and static IP.
Why this is correct
These permissions allow using the subnet and reserving the specific IP.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume only subnet permission is needed, forgetting that using a specific static internal IP requires an additional `compute.addresses.use` permission on that address resource.
Detailed technical explanation
How to think about this question
In Shared VPC, the service project's Compute Engine default service account must be granted IAM permissions on the host project's subnet and static IP resources, not just on the service project. The `compute.subnetworks.use` permission allows the service account to use the subnet for instance creation, while `compute.addresses.use` allows it to reserve and use a specific internal IP address. These permissions are evaluated at the resource level (subnet and address) in the host project, and without both, the API call to create the instance with a specific static internal IP will return a permission denied error (HTTP 403).
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this PCA question test?
Manage and provision cloud infrastructure — This question tests Manage and provision cloud infrastructure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: compute.subnetworks.use and compute.addresses.use on the subnet and static IP. — Option D is correct because when a service project creates a Compute Engine instance with a specific static internal IP from a Shared VPC subnet, the service project's Compute Engine default service account needs both `compute.subnetworks.use` permission on the subnet (to allow using the subnet) and `compute.addresses.use` permission on the specific static internal IP address (to reserve and use that address). These permissions must be granted at the host project level for the service account.
What should I do if I get this PCA 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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Last reviewed: Jul 4, 2026
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