- A
Attach the hierarchical firewall policy to the organization node or to the folder containing all projects
This ensures the policy applies to all projects under that node and cannot be overridden.
- B
Create a global network firewall policy and attach it to each service project's VPC
Why wrong: Global network firewall policies can be overridden by local firewall rules with higher priority.
- C
Create a hierarchical firewall policy at the organization level with the required rules
Hierarchical firewall policies are inherited and cannot be overridden, providing consistent enforcement.
- D
Use VPC Service Controls to enforce firewall rules across projects
Why wrong: VPC Service Controls is for API access restrictions, not firewall rules.
- E
Attach the hierarchical firewall policy to the shared VPC host project
Why wrong: Hierarchical policies are attached to folders or organization nodes, not projects directly. They apply to all projects under that node.
PCSE Configuring Network Security Practice Question
This PCSE practice question tests your understanding of configuring network security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
You manage a Google Cloud environment using shared VPC with multiple service projects. You need to enforce consistent firewall rules across all projects in the organization, ensuring that certain security rules cannot be overridden by project administrators. Which TWO steps should you take? (Choose 2)
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
Attach the hierarchical firewall policy to the organization node or to the folder containing all projects
Hierarchical firewall policies are inherited down the resource hierarchy and cannot be overridden by lower-level policies. Global network firewall policies can be applied at the VPC level but can be overridden by lower priority rules. The correct approach is to use a hierarchical firewall policy at the organization level, which enforces rules that cannot be overridden.
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.
- ✓
Attach the hierarchical firewall policy to the organization node or to the folder containing all projects
Why this is correct
This ensures the policy applies to all projects under that node and cannot be overridden.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a global network firewall policy and attach it to each service project's VPC
Why it's wrong here
Global network firewall policies can be overridden by local firewall rules with higher priority.
- ✓
Create a hierarchical firewall policy at the organization level with the required rules
Why this is correct
Hierarchical firewall policies are inherited and cannot be overridden, providing consistent enforcement.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use VPC Service Controls to enforce firewall rules across projects
Why it's wrong here
VPC Service Controls is for API access restrictions, not firewall rules.
- ✗
Attach the hierarchical firewall policy to the shared VPC host project
Why it's wrong here
Hierarchical policies are attached to folders or organization nodes, not projects directly. They apply to all projects under that node.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Identify which PCSE 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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Configuring Network Security — study guide chapter
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FAQ
Questions learners often ask
What does this PCSE question test?
Configuring Network Security — This question tests Configuring Network Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Attach the hierarchical firewall policy to the organization node or to the folder containing all projects — Hierarchical firewall policies are inherited down the resource hierarchy and cannot be overridden by lower-level policies. Global network firewall policies can be applied at the VPC level but can be overridden by lower priority rules. The correct approach is to use a hierarchical firewall policy at the organization level, which enforces rules that cannot be overridden.
What should I do if I get this PCSE question wrong?
Identify which PCSE 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.
About these practice questions
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Last reviewed: Jul 4, 2026
This PCSE 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 PCSE exam.
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