PCNE Configuring Network Services Practice Question
An organization is deploying a Shared VPC with one host project and three service projects. Each service project has multiple VPC networks. They want to ensure that only the host project's network admin can create firewall rules affecting the shared VPC network. Which architecture satisfies this requirement?
⚠ Common exam trap
Many candidates confuse VPC Network Peering with Shared VPC, assuming peering provides centralized management, when in fact peering only enables connectivity without any cross-project IAM control over firewall rules.
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 the shared VPC network in the host project and grant the network admin IAM role only to host project users.
In a Shared VPC architecture, the host project owns the shared VPC network, and only IAM roles granted in the host project can manage that network's resources. By creating the shared VPC network in the host project and granting the network admin IAM role exclusively to host project users, you ensure that only those users can create firewall rules for the shared VPC. Service project users cannot modify the shared network's firewall rules because they lack the necessary IAM permissions on the host project.
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 the shared VPC network in the host project and grant the network admin IAM role only to host project users.
Why this is correct
Shared VPC firewall rules are managed in the host project, and IAM restricts who can modify them.
- ✗
Use VPC Network Peering between each service project and the host project, and allow each service project admin to manage their own firewall rules.
Why it's wrong here
Peering does not provide centralized firewall rule management.
- ✗
Assign the network admin role to users in each service project for the shared VPC network.
Why it's wrong here
This would allow them to modify firewall rules, violating the requirement.
- ✗
Create separate VPC networks in each service project and use VPC Network Peering to interconnect them.
Why it's wrong here
This does not provide a single shared network and central control.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.