Google PCA Design for security and compliance Practice Question
This PCA practice question tests your understanding of design for security and compliance. 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 manages secrets for multiple microservices using Secret Manager. They need to ensure that each service can access only its own secrets, and that all access is logged. What is the best IAM architecture?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create custom roles with secrets.get permission and bind to each service account at the individual secret resource.
Using custom roles with fine-grained permissions and audit logs on the secret level provides least privilege. Option A grants too much access (project-wide). Option B gives full access. Option D does not control access per service.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Create custom roles with secrets.get permission and bind to each service account at the individual secret resource.
Why this is correct
Custom roles allow fine-grained access; binding at secret level ensures least privilege.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✗
Grant each service account the roles/secretmanager.secretAccessor role at the project level.
Why it's wrong here
Project-level access allows reading all secrets.
✗
Use a single service account for all microservices with access to all secrets.
Why it's wrong here
Violates least privilege and separation of duties.
✗
Grant each service account the roles/secretmanager.admin role at the secret level.
Why it's wrong here
Admin role includes permission to modify, too permissive.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PCA questions on access control and AAA configuration.
Design for security and compliance — This question tests Design for security and compliance — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Create custom roles with secrets.get permission and bind to each service account at the individual secret resource. — Using custom roles with fine-grained permissions and audit logs on the secret level provides least privilege. Option A grants too much access (project-wide). Option B gives full access. Option D does not control access per service.
What should I do if I get this PCA question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PCA questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Authentication checks who the user is.
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