AZ-400 Develop a security and compliance plan Practice Question
This AZ-400 practice question tests your understanding of develop a security and compliance plan. 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 company's Azure DevOps project uses a custom agent pool with self-hosted agents. The security team discovers that pipeline runs can access secrets stored in Azure Key Vault, but the team wants to ensure that secrets are only accessible to approved pipelines. Which configuration should the team implement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a library variable group linked to Key Vault and enable 'Approval checks' on the variable group with branch control.
Option A is correct because linking a library variable group to Azure Key Vault and enabling 'Approval checks' on that variable group with branch control ensures that only approved pipelines (and specific branches) can access the secrets. This provides a granular, pipeline-scoped approval gate that prevents unauthorized pipeline runs from retrieving secrets from Key Vault, directly addressing the security requirement.
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 a library variable group linked to Key Vault and enable 'Approval checks' on the variable group with branch control.
Why this is correct
Approval checks and branch filters restrict which pipelines and branches can access secrets.
Related concept
Read the scenario before looking for a memorised answer.
✗
Store secrets directly in pipeline variables and use 'Make secrets available to all pipelines' setting.
Why it's wrong here
This would make secrets accessible to all pipelines, reducing security.
✗
Assign pipeline-level permissions to the Key Vault using Azure RBAC.
Why it's wrong here
Key Vault RBAC applies to users/service principals, not pipelines directly.
✗
Limit the number of agents in the custom agent pool.
Why it's wrong here
Agent count does not control secret access.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure RBAC with pipeline-level permissions, not realizing that Key Vault access must be configured at the vault level (via access policies or RBAC) for the service principal, not at the pipeline scope, and that approval checks on variable groups are the correct way to gate secret access per pipeline run.
Detailed technical explanation
How to think about this question
Under the hood, a library variable group linked to Key Vault uses an Azure Resource Manager service connection with a managed identity or service principal to fetch secrets at runtime. The 'Approval checks' feature leverages Azure Pipelines' pre-deployment approval gates, which can include branch control to restrict which branches in a pipeline are allowed to trigger the secret retrieval, ensuring that only approved pipeline runs (e.g., from the main branch) can access the Key Vault secrets.
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 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 AZ-400 question in full detail.
Develop a security and compliance plan — This question tests Develop a security and compliance plan — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use a library variable group linked to Key Vault and enable 'Approval checks' on the variable group with branch control. — Option A is correct because linking a library variable group to Azure Key Vault and enabling 'Approval checks' on that variable group with branch control ensures that only approved pipelines (and specific branches) can access the secrets. This provides a granular, pipeline-scoped approval gate that prevents unauthorized pipeline runs from retrieving secrets from Key Vault, directly addressing the security requirement.
What should I do if I get this AZ-400 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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