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Implement Azure security →hardMultiple ChoiceObjective-mapped

Quick Answer

The correct permission is Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list, as listing blobs within a container is a data operation distinct from reading blob content or properties. While the read action (blobs/read) allows you to download or view a blob’s data, it does not grant the ability to enumerate the blobs in a container; that requires the dedicated list action. On the AZ-204 exam, this distinction frequently appears in custom RBAC role scenarios, testing your understanding that ARM management actions (like containers/read) control container-level listing, whereas blob-level listing falls under data actions. A common trap is confusing the read action with list—remember that read lets you access a known blob, but list lets you discover which blobs exist. To recall easily: “Read gets the file; list shows the menu.”

AZ-204 Implement Azure security Practice Question

This AZ-204 practice question tests your understanding of implement azure security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.

Exhibit

{
  "roleName": "Custom Storage Blob Data Reader",
  "assignableScopes": ["/subscriptions/12345-.../resourceGroups/ProdRG"],
  "permissions": [
    {
      "actions": ["Microsoft.Storage/storageAccounts/blobServices/containers/read"],
      "notActions": [],
      "dataActions": ["Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read"],
      "notDataActions": []
    }
  ]
}

Refer to the exhibit. You are creating a custom Azure RBAC role. You assign this role to a user for the Production resource group. The user needs to read the contents of a blob in a container. Which permission is necessary for the user to list the container's blobs?

Question 1hardmultiple choice
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Exhibit

{
  "roleName": "Custom Storage Blob Data Reader",
  "assignableScopes": ["/subscriptions/12345-.../resourceGroups/ProdRG"],
  "permissions": [
    {
      "actions": ["Microsoft.Storage/storageAccounts/blobServices/containers/read"],
      "notActions": [],
      "dataActions": ["Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read"],
      "notDataActions": []
    }
  ]
}

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list

The role includes 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' data action for blob read, but does not include 'Microsoft.Storage/storageAccounts/blobServices/containers/read' action to list containers. However, the question asks to list blobs within a container, which requires 'Microsoft.Storage/storageAccounts/blobServices/containers/read' to list blobs? Actually, listing blobs is a data operation: 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' allows reading blob content and properties but not listing? Wait, listing blobs requires the data action 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list'? The exhibit shows only read, not list. But the options: Option A is the data action for reading blobs, but listing requires 'list' action. However, in Azure RBAC, 'list' is included in 'read' for blobs? Actually, the Microsoft documentation: 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' allows reading blob content, but listing blobs requires 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list'? No, listing is a separate operation. But the role only has read. The correct answer is Option D? Let's think: The user needs to read blob contents; the role already has 'blobs/read'. But the question says 'list the container's blobs' - that is a separate permission. The role does not include it. So the user cannot list blobs. But the options: Option A is 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' - that is already present. Option B is 'Microsoft.Storage/storageAccounts/blobServices/containers/read' - that is for listing containers, not blobs. Option C is 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list' - that is the correct permission for listing blobs. Option D is 'Microsoft.Storage/storageAccounts/read' - too broad. So Option C is needed to list blobs. But the question says 'Which permission is necessary' implying that the current role lacks it. So the user needs to add the list action. But the role already has the read action for blobs, but listing is not included. So the correct answer is Option C. However, the stem says 'The user needs to read the contents of a blob' and 'list the container's blobs' - but the role already has read, so to list they need list. The exhibit shows the role has 'blobs/read' data action. So the missing permission is 'list'. So Option C. But wait, the role also has 'actions' for 'containers/read' which is an ARM action, not data. That allows listing containers but not blobs. So indeed, to list blobs, you need the data action 'list'. So Option C is correct.

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.

  • ✓

    Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list

    Why this is correct

    This data action is required to list blobs within a container.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    Microsoft.Storage/storageAccounts/read

    Why it's wrong here

    This is a management action for reading storage account properties, not blob data.

  • ✗

    Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read

    Why it's wrong here

    This permission is already included in the role; it allows reading blob content but not listing blobs.

  • ✗

    Microsoft.Storage/storageAccounts/blobServices/containers/read

    Why it's wrong here

    This is an ARM action for listing containers, not for listing blobs.

Common exam traps

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.

Detailed technical explanation

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.

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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

What to study next

Got this wrong? Here's your next step.

Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this AZ-204 question test?

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: Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list — The role includes 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' data action for blob read, but does not include 'Microsoft.Storage/storageAccounts/blobServices/containers/read' action to list containers. However, the question asks to list blobs within a container, which requires 'Microsoft.Storage/storageAccounts/blobServices/containers/read' to list blobs? Actually, listing blobs is a data operation: 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' allows reading blob content and properties but not listing? Wait, listing blobs requires the data action 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list'? The exhibit shows only read, not list. But the options: Option A is the data action for reading blobs, but listing requires 'list' action. However, in Azure RBAC, 'list' is included in 'read' for blobs? Actually, the Microsoft documentation: 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' allows reading blob content, but listing blobs requires 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list'? No, listing is a separate operation. But the role only has read. The correct answer is Option D? Let's think: The user needs to read blob contents; the role already has 'blobs/read'. But the question says 'list the container's blobs' - that is a separate permission. The role does not include it. So the user cannot list blobs. But the options: Option A is 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read' - that is already present. Option B is 'Microsoft.Storage/storageAccounts/blobServices/containers/read' - that is for listing containers, not blobs. Option C is 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/list' - that is the correct permission for listing blobs. Option D is 'Microsoft.Storage/storageAccounts/read' - too broad. So Option C is needed to list blobs. But the question says 'Which permission is necessary' implying that the current role lacks it. So the user needs to add the list action. But the role already has the read action for blobs, but listing is not included. So the correct answer is Option C. However, the stem says 'The user needs to read the contents of a blob' and 'list the container's blobs' - but the role already has read, so to list they need list. The exhibit shows the role has 'blobs/read' data action. So the missing permission is 'list'. So Option C. But wait, the role also has 'actions' for 'containers/read' which is an ARM action, not data. That allows listing containers but not blobs. So indeed, to list blobs, you need the data action 'list'. So Option C is correct.

What should I do if I get this AZ-204 question wrong?

Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 20, 2026

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