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A company stores critical business data in an Azure Storage account (Blob Storage). They want to ensure that all data is encrypted at rest using a customer-managed key (CMK) stored in Azure Key Vault. They also need to be able to revoke access to the data quickly if a breach is suspected. Which feature should they enable on the storage account to enforce CMK?

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A company stores critical business data in an Azure Storage account (Blob Storage). They want to ensure that all data is encrypted at rest using a customer-managed key (CMK) stored in Azure Key Vault. They also need to be able to revoke access to the data quickly if a breach is suspected. Which feature should they enable on the storage account to enforce CMK?

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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

Enable infrastructure encryption for the storage account

Infrastructure encryption provides a second layer of encryption at the infrastructure level, but it still uses the same key type as the base encryption. It does not provide the ability to revoke access via key disabling.

B

Best answer

Enable Azure Storage encryption with customer-managed keys

This configures the storage account to use a CMK from Key Vault. Revocation is done by disabling the key in Key Vault, making the data inaccessible.

C

Distractor review

Enable soft delete for blobs

Soft delete protects against accidental deletion, but does not change the encryption key management.

D

Distractor review

Enable versioning for blobs

Versioning keeps previous versions of blobs, but does not affect encryption.

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

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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.

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Question 4

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Question 5

A Sentinel watchlist contains high-value administrator accounts. Which KQL pattern best uses it in a detection rule?

Question 6

A SOC wants a Sentinel rule to include account, host, and IP entities so analysts can pivot during investigation. What should be configured in the analytics rule?

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: Enable Azure Storage encryption with customer-managed keys — Azure Storage encryption at rest uses Azure SSE. By default, Microsoft-managed keys are used (MMK). To use customer-managed keys (CMK), you must enable 'Encryption at rest using customer-managed keys' and specify the key vault and key. Additionally, to revoke access, you disable the key in Key Vault. The feature is simply enabling 'Azure Storage encryption with customer-managed key'. The other options are different: 'Infrastructure encryption' adds double encryption (FIPS 140-2). 'Soft delete' and 'versioning' protect against accidental deletion but do not relate to encryption key management.

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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