- A
You can export custom routes to a peered VPC.
Custom route export is supported.
- B
Peering is non-transitive.
Correct: peering is non-transitive.
- C
Peering supports global routing mode.
Why wrong: Peering uses the routing mode of each VPC, but doesn't have its own.
- D
Peering is transitive by default.
Why wrong: Peering is non-transitive.
- E
Peered VPCs can have overlapping IP ranges.
Why wrong: Overlapping ranges are not allowed.
Question 444 of 1,000
PCNE Practice Question: Designing, Planning, and Prototyping a GCP Network
This PCNE practice question tests your understanding of designing, planning, and prototyping a gcp network. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which TWO statements are true about VPC Network Peering? (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
✓
You can export custom routes to a peered VPC.
Option A is correct because VPC Network Peering allows you to export custom routes (including static and dynamically learned routes) to a peered VPC. This is done by enabling the 'Export custom routes' option on the VPC peering connection, which then advertises those routes to the peer, enabling traffic to be directed through the peering link for custom destinations.
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.
- ✓
You can export custom routes to a peered VPC.
Why this is correct
Custom route export is supported.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Peering is non-transitive.
Why this is correct
Correct: peering is non-transitive.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Peering supports global routing mode.
Why it's wrong here
Peering uses the routing mode of each VPC, but doesn't have its own.
- ✗
Peering is transitive by default.
Why it's wrong here
Peering is non-transitive.
- ✗
Peered VPCs can have overlapping IP ranges.
Why it's wrong here
Overlapping ranges are not allowed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume peering is transitive (like in traditional network routing) or that overlapping IP ranges are allowed, but GCP enforces non-transitivity and strict IP uniqueness to prevent routing loops and conflicts.
Detailed technical explanation
How to think about this question
Under the hood, VPC Network Peering uses the Cloud Router's BGP sessions to exchange routes, but unlike VPN-based peering, it does not require a separate VPN gateway. Custom route export is implemented by adding the exported routes to the VPC's route table and then advertising them to the peer via the internal peering infrastructure. A real-world scenario is when you have a centralized inspection VPC with a firewall appliance and you want to export a default route (0.0.0.0/0) to peered VPCs so all internet-bound traffic is routed through the inspection VPC.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Designing, Planning, and Prototyping a GCP Network — study guide chapter
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FAQ
Questions learners often ask
What does this PCNE question test?
Designing, Planning, and Prototyping a GCP Network — This question tests Designing, Planning, and Prototyping a GCP Network — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: You can export custom routes to a peered VPC. — Option A is correct because VPC Network Peering allows you to export custom routes (including static and dynamically learned routes) to a peered VPC. This is done by enabling the 'Export custom routes' option on the VPC peering connection, which then advertises those routes to the peer, enabling traffic to be directed through the peering link for custom destinations.
What should I do if I get this PCNE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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 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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