Google PCA Manage and provision cloud infrastructure Practice Question
This PCA practice question tests your understanding of manage and provision cloud infrastructure. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 user wants to store a database password that will be used by a Compute Engine instance. What is the most secure and manageable approach?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Secret Manager and grant the instance's service account access to the secret
Secret Manager is the most secure and manageable approach because it provides encrypted storage, automatic rotation, and fine-grained access control via IAM. By granting the Compute Engine instance's service account access to the secret, the password is never exposed in plaintext metadata, logs, or disk files, and access can be audited and revoked independently of the instance lifecycle.
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 Secret Manager and grant the instance's service account access to the secret
Why this is correct
Secret Manager is the recommended way to store secrets with fine-grained access control.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set the password as an environment variable in instance metadata
Why it's wrong here
Instance metadata is accessible to the instance and anyone with compute.projects.get.
✗
Store the password in Cloud Storage bucket metadata
Why it's wrong here
Not designed for secrets; access control is less granular.
✗
Store the password in a file on the instance's boot disk
Why it's wrong here
Insecure; anyone with disk access can read it.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that instance metadata is a secure place for secrets because it is 'internal' to the project, but in reality, metadata is accessible to any process on the instance and is logged, making it unsuitable for sensitive data.
Detailed technical explanation
How to think about this question
Secret Manager integrates with IAM to allow service accounts to access secrets via the Secret Manager API, using the `secretmanager.versions.access` permission. Under the hood, secrets are encrypted at rest using AES-256 with Google-managed or CMEK keys, and access is logged in Cloud Audit Logs for compliance. A real-world scenario where this matters is when an instance is auto-scaled or recreated; using Secret Manager ensures the secret is available without embedding it in a custom image or startup script.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Manage and provision cloud infrastructure — This question tests Manage and provision cloud infrastructure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Secret Manager and grant the instance's service account access to the secret — Secret Manager is the most secure and manageable approach because it provides encrypted storage, automatic rotation, and fine-grained access control via IAM. By granting the Compute Engine instance's service account access to the secret, the password is never exposed in plaintext metadata, logs, or disk files, and access can be audited and revoked independently of the instance lifecycle.
What should I do if I get this PCA 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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