mediummultiple choiceObjective-mapped

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?

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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.

A

Distractor review

Azure Disk Encryption

Azure Disk Encryption is designed for virtual machine disks, not for Blob Storage.

B

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.

C

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.

D

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.

More questions from this exam

Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.

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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