Google PCA Practice Question: Managing and Provisioning a Solution Infrastructure
This PCA practice question tests your understanding of managing and provisioning a solution infrastructure. 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.
A Cloud Run service needs to access resources in a VPC network (e.g., a Cloud SQL instance). The service should be able to send requests to the VPC and receive responses. What is the correct configuration?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a VPC connector and configure the Cloud Run service to use it for egress
Cloud Run can use a VPC connector (Serverless VPC Access) to send requests to a VPC. It does not allow inbound traffic from the VPC without additional setup.
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 VPC connector and configure the Cloud Run service to use it for egress
Why this is correct
Correct. A VPC connector routes egress traffic from Cloud Run to the VPC.
Cloud Run is serverless and cannot be placed directly in a VPC.
✗
Use Cloud NAT to allow Cloud Run to access the VPC
Why it's wrong here
Cloud NAT is for Compute Engine instances without external IPs, not for Cloud Run.
✗
Use VPC peering between Cloud Run and the VPC
Why it's wrong here
VPC peering works between VPCs, not with serverless services.
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.
Managing and Provisioning a Solution Infrastructure — This question tests Managing and Provisioning a Solution Infrastructure — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Create a VPC connector and configure the Cloud Run service to use it for egress — Cloud Run can use a VPC connector (Serverless VPC Access) to send requests to a VPC. It does not allow inbound traffic from the VPC without additional setup.
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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