The answer is that no additional configuration is needed; Private Google Access already enables a Compute Engine VM without a public IP to securely reach Cloud Storage. This works because Private Google Access routes traffic from the VM’s internal IP address through Google’s private network directly to Google APIs and services, bypassing the public internet entirely. On the Google Professional Cloud Security Engineer exam, this scenario tests your understanding that Private Google Access is a VPC-level feature, not a per-VM setting—once enabled on the subnet, any VM without an external IP can access supported services like Cloud Storage. A common trap is assuming a NAT gateway, Cloud VPN, or proxy is required, but the core concept is that Private Google Access leverages Google’s backbone for private connectivity. Memory tip: think “PGA = Private Google Access = Private Google APIs” — if the subnet has it, the VM is covered.
PCSE Practice Question: Configuring access within a cloud solution environment
This PCSE practice question tests your understanding of configuring access within a cloud solution environment. 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 security engineer needs to ensure that a Compute Engine VM can securely access Cloud Storage buckets without exposing a public IP address. The VM is in a VPC with Private Google Access enabled. What is the recommended approach?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
No additional configuration is needed; Private Google Access allows access to Cloud Storage from VMs without external IPs.
Private Google Access enables a VM without an external IP address to reach Google APIs and services, including Cloud Storage, using the VPC's internal IP and Google's private network. Since the VM is in a VPC with Private Google Access enabled, it can securely access Cloud Storage buckets without needing a public IP or additional proxy. No further configuration is required because the traffic stays within Google's network and never traverses the public internet.
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.
✓
No additional configuration is needed; Private Google Access allows access to Cloud Storage from VMs without external IPs.
Why this is correct
Correct: Private Google Access enables access to Google APIs via internal IPs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Deploy a Squid proxy in the same VPC and configure the VM to use it for all outbound traffic.
Why it's wrong here
A proxy is unnecessary and adds complexity.
✗
Assign an external IP to the VM and configure a firewall rule to allow egress to 0.0.0.0/0.
Why it's wrong here
Assigning external IP is not needed; it reduces security.
✗
Configure Cloud NAT and ensure the VM has a route to the internet.
Why it's wrong here
Cloud NAT is for internet access, not Google API access.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that Private Google Access requires an external IP or NAT, but the trap here is that Private Google Access is specifically designed for VMs without external IPs to access Google APIs and services directly, so no additional components like proxies or NAT are needed.
Detailed technical explanation
How to think about this question
Private Google Access works by using the VPC's default route to the default internet gateway (0.0.0.0/0) but with a special next hop that directs traffic to Google's private IP ranges (e.g., 199.36.153.4/30 for Google APIs). This allows the VM to resolve Cloud Storage endpoints via internal DNS (e.g., storage.googleapis.com resolves to a private IP) and communicate over Google's backbone, avoiding public internet. In real-world scenarios, this is critical for compliance with data residency or security policies that prohibit public IP exposure.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
Configuring access within a cloud solution environment — This question tests Configuring access within a cloud solution environment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: No additional configuration is needed; Private Google Access allows access to Cloud Storage from VMs without external IPs. — Private Google Access enables a VM without an external IP address to reach Google APIs and services, including Cloud Storage, using the VPC's internal IP and Google's private network. Since the VM is in a VPC with Private Google Access enabled, it can securely access Cloud Storage buckets without needing a public IP or additional proxy. No further configuration is required because the traffic stays within Google's network and never traverses the public internet.
What should I do if I get this PCSE 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.
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Question Discussion
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