The correct answer is to create a Private Service Connect service attachment and publish the service. This is because the producer, which is the organization owning VPC-A, must expose its service by configuring a service attachment that is associated with a regional internal load balancer or a service running behind it. The consumer in VPC-B then creates a Private Service Connect endpoint to connect privately to that published service, without requiring VPC peering or external IP addresses. On the Google Professional Cloud Network Engineer exam, this scenario tests your understanding of the producer-consumer model and the distinction that the service attachment lives in the producer’s VPC, while the endpoint is always in the consumer’s VPC. A common trap is confusing the attachment with the endpoint or assuming VPC peering is needed, but Private Service Connect works across organizations without peering. Memory tip: the producer “attaches” the service to a load balancer, so the attachment stays with the producer.
PCNE Implementing a Virtual Private Cloud Practice Question
This PCNE practice question tests your understanding of implementing a virtual private cloud. 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.
Two organizations have their own GCP projects with VPCs that are peered. They want to allow a service in VPC-A to be consumed by VPC-B using Private Service Connect. What configuration is required in VPC-A?
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 service attachment and publish the service.
Option C is correct because the producer (VPC-A) must create a Private Service Connect service attachment that publishes the service. This attachment is associated with a load balancer or a service. Option A is incorrect because the endpoint is created in the consumer VPC (VPC-B). Option B is incorrect because VPC peering is not used with Private Service Connect (the services can be across organizations without peering). Option D is incorrect because Private Google Access is unrelated to publishing services.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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 VPC-A.
Why it's wrong here
Endpoints are created in the consumer VPC, not the producer.
✗
Enable Private Google Access on the subnet where the service resides.
Why it's wrong here
Private Google Access is for accessing Google APIs, not for publishing services.
✓
Create a Private Service Connect service attachment and publish the service.
Why this is correct
The producer publishes the service via a service attachment.
Private Service Connect does not require VPC peering.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.
TExam Day Tips
→Write the block size before choosing the subnet.
→Check whether the question asks for hosts, subnets or a specific address range.
→Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PCNE subnetting questions on CIDR, address ranges, and subnet selection.
Implementing a Virtual Private Cloud — This question tests Implementing a Virtual Private Cloud — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Create a Private Service Connect service attachment and publish the service. — Option C is correct because the producer (VPC-A) must create a Private Service Connect service attachment that publishes the service. This attachment is associated with a load balancer or a service. Option A is incorrect because the endpoint is created in the consumer VPC (VPC-B). Option B is incorrect because VPC peering is not used with Private Service Connect (the services can be across organizations without peering). Option D is incorrect because Private Google Access is unrelated to publishing services.
What should I do if I get this PCNE question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PCNE subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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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.
Question Discussion
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