Google PCA Manage and provision cloud infrastructure Practice Question
This PCA practice question tests your understanding of manage and provision cloud infrastructure. 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.
A company needs to connect two VPC networks in different Google Cloud regions. The VPCs are in separate projects under the same organization. The connection must use private IP addresses and support high throughput. Which TWO options meet these requirements? (Choose 2.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
VPC Network Peering
VPC Network Peering works across regions and projects within the same organization, using private IPs and supporting high throughput. Cloud VPN also works across regions and projects, providing encrypted private connectivity. Shared VPC is for sharing subnets within a project, not for connecting separate projects. Cloud NAT is for outbound internet access. HA VPN Gateway is a component of Cloud VPN, not a standalone connection method.
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.
✗
HA VPN Gateway
Why it's wrong here
HA VPNGateway is a component of Cloud VPN; alone it does not provide connectivity without tunnels configured.
✓
VPC Network Peering
Why this is correct
Correct: Cross-region and cross-project VPC peering is supported, using private IPs with high throughput.
Shared VPC allows a common VPC network to be shared across projects, but it does not connect separate VPC networks.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PCA subnetting questions on CIDR, address ranges, and subnet selection.
Manage and provision cloud infrastructure — This question tests Manage and provision cloud infrastructure — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: VPC Network Peering — VPC Network Peering works across regions and projects within the same organization, using private IPs and supporting high throughput. Cloud VPN also works across regions and projects, providing encrypted private connectivity. Shared VPC is for sharing subnets within a project, not for connecting separate projects. Cloud NAT is for outbound internet access. HA VPN Gateway is a component of Cloud VPN, not a standalone connection method.
What should I do if I get this PCA 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 PCA 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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Question Discussion
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