PCNE Implementing VPC Instances Practice Question
An organization has multiple VPCs in different projects that need to consume a common internal service hosted in a central project. The service runs on a set of Compute Engine instances with internal IPs. Which architecture allows the consumers to access the service using private IPs without VPC peering?
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 Private Service Connect endpoint in each consumer VPC and publish the service as a Private Service Connect service from the central project.
Private Service Connect allows you to publish internal services via Private Service Connect endpoints in consumer VPCs. Consumers access the service using internal IPs without needing VPC peering or VPNs. This is the recommended architecture for publishing and consuming internal services across projects.
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 Service Connect endpoint in each consumer VPC and publish the service as a Private Service Connect service from the central project.
Why this is correct
Private Service Connect is designed for this use case, providing private IP access without peering.
- ✗
Use Cloud VPN to connect each consumer VPC to the central VPC.
Why it's wrong here
VPN adds complexity and bandwidth limitations.
- ✗
Expose the service through an external IP and use IAM to restrict access.
Why it's wrong here
This goes against the requirement of using private IPs.
- ✗
Set up VPC peering between each consumer VPC and the central VPC.
Why it's wrong here
VPC peering works but requires transitive peering limitations and management of many peerings.
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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.