The correct solution is to use Event Grid to trigger an Azure Function or Automation runbook that rotates the secret. Azure Key Vault does not natively support automatic secret rotation, so you must implement a custom event-driven workflow: Event Grid listens for the secret expiration event, then fires an Azure Function or runbook that generates a new secret and updates the vault. This pattern directly addresses the requirement to rotate secrets every 90 days without manual intervention. On the AZ-204 exam, this scenario tests your understanding of Key Vault’s eventing capabilities and the need to pair them with compute services for automation—a common trap is assuming Key Vault has a built-in rotation feature, which it does not. Remember the mnemonic: “Key Vault expires, Event Grid fires, Function retires the old and acquires.”
AZ-204 Implement Azure security Practice Question
This AZ-204 practice question tests your understanding of implement azure security. 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 stores secrets (e.g., connection strings) in Azure Key Vault and needs them automatically rotated every 90 days. Which solution should they implement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Event Grid to trigger an Azure Function or Automation runbook that rotates the secret
Option C is correct because Azure Key Vault does not natively support automatic secret rotation; you must implement a custom solution using Event Grid to detect expiration events and trigger an Azure Function or Automation runbook that generates a new secret and updates the vault. This pattern leverages Key Vault's eventing capabilities to automate the rotation workflow without manual intervention.
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.
✗
Configure Key Vault access policies to enforce rotation
Why it's wrong here
Access policies control who can access secrets, not rotation schedules.
✗
Enable Key Vault firewall to limit access
Why it's wrong here
Firewalls restrict network access but do not automate rotation.
✓
Use Event Grid to trigger an Azure Function or Automation runbook that rotates the secret
Why this is correct
This is the recommended pattern; Event Grid can emit events when a secret is near expiration, invoking a rotation logic.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable soft-delete on the vault
Why it's wrong here
Soft-delete protects against accidental deletion but does not rotate secrets.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume Key Vault has a built-in rotation feature, but Azure Key Vault only stores secrets and requires an external automation trigger (Event Grid + Azure Function) to implement rotation logic.
Detailed technical explanation
How to think about this question
Under the hood, Event Grid subscribes to the 'Microsoft.KeyVault.SecretNearExpiry' event (triggered when a secret is within a configurable expiry window, default 30 days) and delivers it to an Azure Function via webhook. The Function then uses the Key Vault SDK to create a new version of the secret with a new value (e.g., a regenerated connection string) and sets a new expiry date 90 days out, effectively rotating the secret. In real-world scenarios, this pattern is critical for compliance with security policies like PCI DSS or SOC 2 that mandate periodic credential rotation.
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-204 question in full detail.
Implement Azure security — This question tests Implement Azure security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Event Grid to trigger an Azure Function or Automation runbook that rotates the secret — Option C is correct because Azure Key Vault does not natively support automatic secret rotation; you must implement a custom solution using Event Grid to detect expiration events and trigger an Azure Function or Automation runbook that generates a new secret and updates the vault. This pattern leverages Key Vault's eventing capabilities to automate the rotation workflow without manual intervention.
What should I do if I get this AZ-204 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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