Google PCA Designing for Security and Compliance Practice Question
A company wants to restrict access to their Cloud Storage bucket so that only requests from within a specific VPC network are allowed, and all other traffic (including internet) is denied. They also need to allow access from on-premises through a VPN. Which configuration should they use?
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
✓
Configure the bucket with VPC Service Controls and enable Private Google Access
VPC Service Controls create a service perimeter around the bucket, and private Google Access allows resources in the VPC to use the bucket's private IP addresses. The on-premises network can connect via VPN using VPC Private Google Access. Public access is blocked by the perimeter. Firewall rules alone cannot block internet traffic to a public bucket.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure the bucket with VPC Service Controls and enable Private Google Access
Why this is correct
VPC Service Controls create a service perimeter, and Private Google Access allows access from VMs and on-premises via VPN.
- ✗
Use IAM conditions to restrict access based on IP address
Why it's wrong here
IAM conditions can restrict based on IP but do not prevent access from the internet if the bucket is publicly accessible.
- ✗
Use firewall rules to allow traffic only from the VPC IP range
Why it's wrong here
Firewall rules do not apply to Cloud Storage, which is a Google-managed service.
- ✗
Set up Cloud VPN and use Cloud NAT for egress
Why it's wrong here
Cloud NAT is for outbound traffic, not inbound access to a bucket.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
Private Google Access
Private Google Access lets virtual machines in a Google Cloud VPC reach Google APIs and services using private IP addresses, without needing public internet access.
Key term
Cloud storage
Cloud storage is a service that lets you save data on remote servers accessed over the internet instead of on your computer's hard drive.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCA 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 PCA exam.