The answer is to store logs in a Cloud Logging bucket with a retention policy locked via the Logs Retention API, combined with customer-managed encryption keys (CMEK) and access transparency. This trio ensures SOX compliance measures for Cloud Audit Logs by making the logs immutable—the locked retention policy prevents deletion or shortening of the retention period—and by encrypting them with keys you control via Cloud KMS, which prevents unauthorized decryption even by Google, satisfying SOX requirements for data integrity and confidentiality. On the Google Professional Cloud Security Engineer exam, this scenario tests your understanding of audit log sovereignty and the distinction between Google-managed and customer-managed encryption; a common trap is assuming a simple storage bucket with default encryption suffices, but SOX demands both immutability and key control. Remember the mnemonic "LOCK, KEY, VIEW"—Lock the retention policy, use your own Key, and enable Access Transparency to verify who views the logs.
PCSE Supporting compliance requirements Practice Question
This PCSE practice question tests your understanding of supporting compliance requirements. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 financial institution must meet SOX compliance requirements for audit trail integrity. Which THREE measures should they implement to ensure Cloud Audit Logs are immutable and securely stored?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use customer-managed encryption keys (CMEK) with Cloud KMS for audit logs.
Option B is correct because using customer-managed encryption keys (CMEK) with Cloud KMS ensures that audit logs are encrypted with keys under the customer's control, preventing unauthorized decryption even by Google. This satisfies SOX requirements for data integrity and confidentiality, as the logs cannot be tampered with or accessed without the key.
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.
✗
Use VPC Service Controls to prevent exfiltration of logs.
Why it's wrong here
VPC Service Controls prevent data exfiltration but do not ensure immutability.
✓
Use customer-managed encryption keys (CMEK) with Cloud KMS for audit logs.
Why this is correct
CMEK ensures only authorized keys can decrypt logs.
Related concept
Read the scenario before looking for a memorised answer.
✓
Export logs to Cloud Storage and apply a retention policy with a lock.
Why this is correct
Cloud Storage retention lock makes objects immutable.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set up Cloud IAM roles to restrict who can read audit logs.
Why it's wrong here
IAM controls access but does not prevent deletion by authorized users.
✓
Store logs in a Cloud Logging bucket with a retention policy locked via the Logs Retention API.
Why this is correct
Locked retention policy prevents log deletion during retention period.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between access control (IAM, VPC Service Controls) and immutability (retention locks, CMEK), leading candidates to confuse preventing unauthorized access with preventing tampering or deletion.
Detailed technical explanation
How to think about this question
Cloud Logging buckets with retention policies locked via the Logs Retention API enforce immutability by preventing log deletion or modification before the retention period expires, even for administrators. Exporting logs to Cloud Storage with a retention policy lock applies object-level immutability using bucket lock features, which comply with SEC Rule 17a-4(f) for non-rewritable, non-erasable storage. CMEK with Cloud KMS ensures encryption keys are managed by the customer, providing an additional layer of access control and auditability for log data.
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.
Supporting compliance requirements — This question tests Supporting compliance requirements — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use customer-managed encryption keys (CMEK) with Cloud KMS for audit logs. — Option B is correct because using customer-managed encryption keys (CMEK) with Cloud KMS ensures that audit logs are encrypted with keys under the customer's control, preventing unauthorized decryption even by Google. This satisfies SOX requirements for data integrity and confidentiality, as the logs cannot be tampered with or accessed without the key.
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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This PCSE 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 PCSE exam.
Question Discussion
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