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Question 485 of 500

Planning and configuring a cloud solution →hardMultiple ChoiceObjective-mapped

Quick Answer

The answer is a single global VPC with subnets in each region, because this design keeps multi-region VPC private traffic entirely on Google’s private backbone without any internet exposure. When you create subnets in different regions within the same global VPC, internal IP addresses communicate directly over Google’s network, eliminating the need for VPNs, peering, or additional gateways. On the Google Associate Cloud Engineer exam, this question tests your understanding of VPC scope and the distinction between global versus regional resources—a common trap is overcomplicating the solution with Cloud VPN or VPC Network Peering when a single VPC already provides private, cross-region connectivity. Remember the memory tip: “One VPC, many regions, zero internet” — if all subnets live in the same VPC, traffic between them never leaves Google’s infrastructure, giving you the least management overhead by default.

Google ACE Planning and configuring a cloud solution Practice Question

This ACE practice question tests your understanding of planning and configuring a cloud solution. 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.

You are planning a GCP network for a company with offices in three regions: `us-central1`, `europe-west1`, and `asia-east1`. All three regions must communicate with each other, and traffic must NOT traverse the public internet. Each region has its own subnet. Which network design achieves this with the least management overhead?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "NOT"
Why it matters: Negative qualifier — you are looking for the one option that does NOT apply. Most options will be true; only one is false for this scenario.
Clue: "least"
Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.

Question 1hardmultiple choice

Review the full subnetting walkthrough →

A
Create three separate VPCs (one per region) and connect them with VPC Network Peering.
Why wrong: Separate VPCs with peering adds administrative overhead (peer each pair, manage peering routes) when a single global VPC achieves the same result automatically.
B
Use a single global VPC with subnets in each region; traffic between subnets stays on Google's private network.
A single GCP VPC is global by design. Subnets in different regions communicate over Google's internal backbone — no special configuration required for private inter-region connectivity.
C
Set up Cloud VPN tunnels between each pair of regions.
Why wrong: Cloud VPN is used to connect external (on-premises or other cloud) networks to GCP, not for connectivity within a single GCP VPC.
D
Use Cloud Interconnect dedicated connections in each region and configure BGP routing between them.
Why wrong: Cloud Interconnect is for on-premises to GCP connectivity, not for inter-region routing within a GCP VPC.

Full breakdown with real-world context →

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

✓

Use a single global VPC with subnets in each region; traffic between subnets stays on Google's private network.

Option B is correct because a single global VPC allows you to create subnets in multiple regions, and traffic between those subnets stays on Google's private backbone network without traversing the public internet. This design requires no additional connectivity configuration, peering, or VPN tunnels, making it the simplest to manage while meeting all requirements.

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.

✗
Create three separate VPCs (one per region) and connect them with VPC Network Peering.
Why it's wrong here
Separate VPCs with peering adds administrative overhead (peer each pair, manage peering routes) when a single global VPC achieves the same result automatically.
✓
Use a single global VPC with subnets in each region; traffic between subnets stays on Google's private network.
Why this is correct
A single GCP VPC is global by design. Subnets in different regions communicate over Google's internal backbone — no special configuration required for private inter-region connectivity.
Clue confirmation
The clue words "NOT", "least" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set up Cloud VPN tunnels between each pair of regions.
Why it's wrong here
Cloud VPN is used to connect external (on-premises or other cloud) networks to GCP, not for connectivity within a single GCP VPC.
✗
Use Cloud Interconnect dedicated connections in each region and configure BGP routing between them.
Why it's wrong here
Cloud Interconnect is for on-premises to GCP connectivity, not for inter-region routing within a GCP VPC.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often overcomplicate the solution by thinking they need separate VPCs or VPNs for each region, not realizing that a single global VPC inherently supports multi-region subnets with private, Google-managed routing.

Detailed technical explanation

How to think about this question

A global VPC uses Google's Andromeda software-defined networking stack to route traffic between subnets using internal IP addresses, leveraging Google's global fiber backbone for low-latency, encrypted transit. This design scales automatically as you add more regions or subnets, and it supports dynamic routing with Cloud Router if needed, but for simple inter-subnet communication, no additional routing configuration is required. In real-world scenarios, this approach is ideal for multi-region applications like global load-balanced services where you want to minimize operational complexity.

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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FAQ

Questions learners often ask

What does this ACE question test?

Planning and configuring a cloud solution — This question tests Planning and configuring a cloud solution — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Use a single global VPC with subnets in each region; traffic between subnets stays on Google's private network. — Option B is correct because a single global VPC allows you to create subnets in multiple regions, and traffic between those subnets stays on Google's private backbone network without traversing the public internet. This design requires no additional connectivity configuration, peering, or VPN tunnels, making it the simplest to manage while meeting all requirements.

What should I do if I get this ACE question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "NOT", "least". Negative qualifier — you are looking for the one option that does NOT apply. Most options will be true; only one is false for this scenario.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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This ACE 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 ACE exam.