- A
Create a private zone in the service project and use an inbound server policy.
Why wrong: Inbound server policy is designed for on-premises DNS resolution, not for cross-project access.
- B
Use VPC peering and allow the service project to manage DNS records.
Why wrong: VPC peering does not automatically enable cross-project DNS resolution.
- C
Grant the service project access to the Shared VPC's private zone via IAM roles.
Why wrong: IAM roles control administrative access, but the zone would still resolve for any VPC in the host project.
- D
Create a DNS response policy in the Shared VPC host project and associate it with the service project's VPC.
Response policies enable selective DNS resolution for specific VPC networks.
Question 406 of 1,000
hardMultiple ChoiceObjective-mapped
Use DNS Response Policy to Restrict Private Zone Access in Shared VPC
This PCNE practice question tests your understanding of a multinational company has a shared vpc…. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 multinational company has a Shared VPC environment with multiple service projects. They need to allow a specific service project to use its own Cloud DNS private zone that resolves to internal IPs in the Shared VPC. Which configuration ensures this without exposing the zone to other projects?
Quick Answer
The correct configuration is to create a DNS response policy in the Shared VPC host project and associate it with the service project's VPC. This works because a DNS response policy acts as a filter that controls which VPC networks can resolve a private zone, allowing you to restrict resolution to a specific service project even when the zone itself is hosted in the shared environment. On the Google Professional Cloud Network Engineer exam, this scenario tests your understanding of how to isolate DNS resolution within a Shared VPC architecture—a common trap is assuming that placing the zone in the service project or using an inbound server policy will suffice, but those options either fail to restrict access or address on-premises forwarding, not VPC-level control. Remember the key distinction: a response policy is for per-VPC access control, while a forwarding policy is for hybrid connectivity. Memory tip: think of a DNS response policy as a bouncer at a private club—it checks the VPC’s ID at the door and only lets the right network in.
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
✓
Create a DNS response policy in the Shared VPC host project and associate it with the service project's VPC.
Option D is correct: DNS response policies allow you to control DNS resolution per VPC in a Shared VPC environment. By creating a response policy in the host project and associating it with the service project's VPC, you enable that service project to use its own private zone without exposing it to other projects. Option A is incorrect because an inbound server policy is used for on-premises DNS resolution, not for granting private zone access to a service project. Option B is incorrect because VPC peering would allow the service project to manage DNS records, but it does not restrict access to the zone; moreover, peering is not the correct approach for selective DNS resolution in a Shared VPC. Option C is incorrect because granting IAM roles alone does not associate the private zone with a specific VPC; it would allow the service project to view or manage the zone, but the zone would still be visible to other projects with access.
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.
- ✗
Create a private zone in the service project and use an inbound server policy.
Why it's wrong here
Inbound server policy is designed for on-premises DNS resolution, not for cross-project access.
- ✗
Use VPC peering and allow the service project to manage DNS records.
Why it's wrong here
VPC peering does not automatically enable cross-project DNS resolution.
- ✗
Grant the service project access to the Shared VPC's private zone via IAM roles.
Why it's wrong here
IAM roles control administrative access, but the zone would still resolve for any VPC in the host project.
- ✓
Create a DNS response policy in the Shared VPC host project and associate it with the service project's VPC.
Why this is correct
Response policies enable selective DNS resolution for specific VPC networks.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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
Quick reference
Common DNS Record Types
| Record | Purpose | Example |
|---|---|---|
| A | IPv4 address mapping | example.com → 93.184.216.34 |
| AAAA | IPv6 address mapping | example.com → 2606:2800::1 |
| CNAME | Alias to another hostname | www → example.com |
| MX | Mail server for domain | example.com → mail.example.com (priority 10) |
| TXT | Text data (SPF, DKIM, verification) | v=spf1 include:_spf.example.com ~all |
| NS | Authoritative name servers | example.com NS ns1.example.com |
| PTR | Reverse DNS (IP → hostname) | 34.216.184.93.in-addr.arpa → example.com |
| SOA | Zone authority record | Primary NS, admin email, serial, TTL defaults |
What to study next
Got this wrong? Here's your next step.
Identify which PCNE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Questions learners often ask
What does this PCNE question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Create a DNS response policy in the Shared VPC host project and associate it with the service project's VPC. — Option D is correct: DNS response policies allow you to control DNS resolution per VPC in a Shared VPC environment. By creating a response policy in the host project and associating it with the service project's VPC, you enable that service project to use its own private zone without exposing it to other projects. Option A is incorrect because an inbound server policy is used for on-premises DNS resolution, not for granting private zone access to a service project. Option B is incorrect because VPC peering would allow the service project to manage DNS records, but it does not restrict access to the zone; moreover, peering is not the correct approach for selective DNS resolution in a Shared VPC. Option C is incorrect because granting IAM roles alone does not associate the private zone with a specific VPC; it would allow the service project to view or manage the zone, but the zone would still be visible to other projects with access.
What should I do if I get this PCNE question wrong?
Identify which PCNE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This PCNE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCNE exam.
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