- A
Separate VPC networks for the CDE and non-CDE environments.
Separate VPCs provide network-level isolation.
- B
Cloud NAT to allow outbound internet access from the CDE.
Why wrong: Cloud NAT enables outbound internet, which is not isolation; it could actually increase risk.
- C
Cloud Armor WAF to protect web applications in the CDE.
Why wrong: Cloud Armor is a WAF, but it does not provide isolation or logging of all access; it is a security control but not required for isolation/logging per the question.
- D
Cloud Audit Logs for all services in the CDE.
Audit logs capture all API calls, meeting PCI DSS logging requirements.
- E
VPC Service Controls to create a perimeter around the CDE.
VPC Service Controls isolate the CDE and restrict data movement.
Question 868 of 1,000
PCSE Supporting Compliance Requirements Practice Question
This PCSE practice question tests your understanding of supporting compliance requirements. 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 is designing a PCI DSS-compliant architecture on Google Cloud. They need to ensure that the cardholder data environment (CDE) is isolated from other environments and that all access to the CDE is logged. Which THREE controls should they implement? (Choose three.)
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
✓
Separate VPC networks for the CDE and non-CDE environments.
VPC Service Controls provide a security perimeter around the CDE, preventing data exfiltration. VPC networks provide network isolation. Cloud Audit Logs record all access to resources. Cloud Armor is a WAF for inbound traffic. Cloud NAT provides outbound internet. Cloud KMS manages encryption keys.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Separate VPC networks for the CDE and non-CDE environments.
Why this is correct
Separate VPCs provide network-level isolation.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
Cloud NAT to allow outbound internet access from the CDE.
Why it's wrong here
Cloud NAT enables outbound internet, which is not isolation; it could actually increase risk.
- ✗
Cloud Armor WAF to protect web applications in the CDE.
Why it's wrong here
Cloud Armor is a WAF, but it does not provide isolation or logging of all access; it is a security control but not required for isolation/logging per the question.
- ✓
Cloud Audit Logs for all services in the CDE.
Why this is correct
Audit logs capture all API calls, meeting PCI DSS logging requirements.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
VPC Service Controls to create a perimeter around the CDE.
Why this is correct
VPC Service Controls isolate the CDE and restrict data movement.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Visual reference
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCSE NAT questions on configuration and troubleshooting.
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Supporting Compliance Requirements — study guide chapter
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FAQ
Questions learners often ask
What does this PCSE question test?
Supporting Compliance Requirements — This question tests Supporting Compliance Requirements — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Separate VPC networks for the CDE and non-CDE environments. — VPC Service Controls provide a security perimeter around the CDE, preventing data exfiltration. VPC networks provide network isolation. Cloud Audit Logs record all access to resources. Cloud Armor is a WAF for inbound traffic. Cloud NAT provides outbound internet. Cloud KMS manages encryption keys.
What should I do if I get this PCSE question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PCSE NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jul 4, 2026
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