A company stores highly sensitive data in Azure Blob Storage. They want to ensure that the data is encrypted at rest using a key stored in Azure Key Vault, but they also want to prevent Microsoft Azure from having any access to the encryption key. Which encryption approach should they use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Distractor review
Azure Disk Encryption
Azure Disk Encryption is designed for virtual machine disks, not for Blob Storage.
Distractor review
Azure Storage Service Encryption with customer-managed keys (CMK)
With CMK, Azure still has access to the key for storage operations, so this does not prevent Azure from accessing the key.
Best answer
Client-side encryption with a customer-managed key stored in Azure Key Vault
Client-side encryption encrypts data before it reaches Azure, ensuring Azure never has access to the plaintext data or the encryption key.
Distractor review
Azure Information Protection
Azure Information Protection is for data classification and labeling, not for encryption at rest.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
Related practice questions
Related AZ-500 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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FAQ
Questions learners often ask
What does this AZ-500 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Client-side encryption with a customer-managed key stored in Azure Key Vault — Azure Storage Service Encryption with customer-managed keys (CMK) still stores the key in Azure Key Vault, but Azure retains access to the key for storage operations. Client-side encryption encrypts data before it is sent to Azure, using a key managed entirely by the customer. This ensures that Azure never has access to the encryption key. Azure Disk Encryption is for virtual machine disks, not blob storage. Azure Information Protection is for classification and labeling, not encryption at rest.
What should I do if I get this AZ-500 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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