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Design security solutions for applications and data →hardMultiple ChoiceObjective-mapped

Quick Answer

The correct answer is that creating a storage account with blob service encryption disabled will be blocked by this policy. This is because the Azure Policy definition specifically evaluates the encryption setting for blob service, and with the effect set to 'Deny', any storage account that does not have blob service encryption enabled is prevented from being created or updated. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of how Azure Policy can enforce security baselines by targeting specific resource properties, and a common trap is confusing blob service encryption with infrastructure encryption or TLS settings. Remember that this policy is narrowly focused on the storage account’s blob service encryption toggle, not broader encryption layers or network controls. A helpful memory tip is to think "Blob or Bust"—if blob encryption is off, the policy denies the request.

SC-100 Practice Question: Design security solutions for applications and data

This SC-100 practice question tests your understanding of design security solutions for applications and data. 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.

Exhibit

{
  "Properties": {
    "Description": "Policy to audit and restrict storage accounts without encryption",
    "Mode": "Indexed",
    "Parameters": {
      "effect": {
        "type": "String",
        "defaultValue": "AuditIfNotExists",
        "allowedValues": [
          "AuditIfNotExists",
          "Deny"
        ]
      }
    },
    "PolicyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Storage/storageAccounts"
      },
      "then": {
        "effect": "[parameters('effect')]",
        "details": {
          "type": "Microsoft.Storage/storageAccounts/blobServices",
          "existenceCondition": {
            "field": "Microsoft.Storage/storageAccounts/blobServices/encryption.enabled",
            "equals": "true"
          }
        }
      }
    }
  }
}

Refer to the exhibit. You are reviewing an Azure Policy definition for storage accounts. You assign this policy with effect set to 'Deny' on a resource group. Which of the following scenarios will be blocked by this policy?

Question 1hardmultiple choice
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Exhibit

{
  "Properties": {
    "Description": "Policy to audit and restrict storage accounts without encryption",
    "Mode": "Indexed",
    "Parameters": {
      "effect": {
        "type": "String",
        "defaultValue": "AuditIfNotExists",
        "allowedValues": [
          "AuditIfNotExists",
          "Deny"
        ]
      }
    },
    "PolicyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Storage/storageAccounts"
      },
      "then": {
        "effect": "[parameters('effect')]",
        "details": {
          "type": "Microsoft.Storage/storageAccounts/blobServices",
          "existenceCondition": {
            "field": "Microsoft.Storage/storageAccounts/blobServices/encryption.enabled",
            "equals": "true"
          }
        }
      }
    }
  }
}

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

✓

Creating a storage account with blob service encryption disabled

Option B is correct because the policy denies storage accounts that do not have blob service encryption enabled. Option A is wrong because the policy checks blob service encryption, not infrastructure encryption. Option C is wrong because the policy does not check TLS version. Option D is wrong because the policy does not check network access.

Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Creating a storage account with a firewall set to deny all public access

    Why it's wrong here

    The policy does not check network access settings.

  • ✗

    Creating a storage account with TLS 1.0 enabled

    Why it's wrong here

    The policy does not check TLS version.

  • ✓

    Creating a storage account with blob service encryption disabled

    Why this is correct

    The policy denies if blob service encryption is not enabled.

    Related concept

    Standard ACLs match source addresses.

  • ✗

    Creating a storage account with infrastructure encryption disabled

    Why it's wrong here

    The policy checks blob service encryption, not infrastructure encryption.

Common exam traps

Common exam trap: ACLs stop at the first match

ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.

Detailed technical explanation

How to think about this question

ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.

KKey Concepts to Remember

  • Standard ACLs match source addresses.
  • Extended ACLs can match source, destination, protocol and ports.
  • The first matching ACL entry is used.
  • There is usually an implicit deny at the end.

TExam Day Tips

  • Check inbound versus outbound direction.
  • Read the ACL from top to bottom.
  • Look for a broader permit or deny above the intended line.

Key takeaway

ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

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.

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SC-100 ACL questions on filtering logic and placement.

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FAQ

Questions learners often ask

What does this SC-100 question test?

Design security solutions for applications and data — This question tests Design security solutions for applications and data — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: Creating a storage account with blob service encryption disabled — Option B is correct because the policy denies storage accounts that do not have blob service encryption enabled. Option A is wrong because the policy checks blob service encryption, not infrastructure encryption. Option C is wrong because the policy does not check TLS version. Option D is wrong because the policy does not check network access.

What should I do if I get this SC-100 question wrong?

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SC-100 ACL questions on filtering logic and placement.

What is the key concept behind this question?

Standard ACLs match source addresses.

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Last reviewed: Jun 21, 2026

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