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Design data storage solutions →mediumMultiple ChoiceObjective-mapped

AZ-305 Design data storage solutions Practice Question

This AZ-305 practice question tests your understanding of design data storage solutions. 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

{
  "variables": {
    "storageAccountName": "[concat('storage', uniqueString(resourceGroup().id))]"
  },
  "resources": [
    {
      "type": "Microsoft.Storage/storageAccounts",
      "apiVersion": "2023-01-01",
      "name": "[variables('storageAccountName')]",
      "location": "[resourceGroup().location]",
      "sku": {
        "name": "Standard_LRS"
      },
      "kind": "StorageV2",
      "properties": {
        "minimumTlsVersion": "TLS1_2",
        "supportsHttpsTrafficOnly": true
      }
    }
  ]
}

Refer to the exhibit. An organization deployed this ARM template to create a storage account. After deployment, they try to enable geo-redundant storage (GRS) but receive an error. What is the most likely reason?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

  • Clue: "most likely"

    Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1mediummultiple choice
Full question →

Exhibit

{
  "variables": {
    "storageAccountName": "[concat('storage', uniqueString(resourceGroup().id))]"
  },
  "resources": [
    {
      "type": "Microsoft.Storage/storageAccounts",
      "apiVersion": "2023-01-01",
      "name": "[variables('storageAccountName')]",
      "location": "[resourceGroup().location]",
      "sku": {
        "name": "Standard_LRS"
      },
      "kind": "StorageV2",
      "properties": {
        "minimumTlsVersion": "TLS1_2",
        "supportsHttpsTrafficOnly": 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

✓

The storage account uses Standard_LRS, which does not support GRS.

Option D is correct because Standard_LRS (Locally Redundant Storage) does not support upgrading to GRS (Geo-Redundant Storage) directly. To enable GRS, the storage account must be created with a redundancy tier that supports geo-replication, such as Standard_GRS or Standard_RAGRS. The error occurs because the ARM template specifies Standard_LRS, which only replicates data within a single datacenter and cannot be converted to a geo-redundant tier after deployment.

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.

  • ✗

    The supportsHttpsTrafficOnly property must be set to false.

    Why it's wrong here

    HTTPS only does not affect redundancy.

  • ✗

    The storage account name is not globally unique.

    Why it's wrong here

    Name uniqueness does not prevent redundancy changes.

  • ✗

    The minimumTlsVersion property prevents geo-replication.

    Why it's wrong here

    TLS version is unrelated to redundancy.

  • ✓

    The storage account uses Standard_LRS, which does not support GRS.

    Why this is correct

    LRS is single-region; GRS requires a different SKU.

    Clue confirmation

    The clue word "most likely" in the question point toward this answer.

    Related concept

    Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may confuse the supportsHttpsTrafficOnly or minimumTlsVersion properties with geo-replication settings, or assume that any storage account can be upgraded to GRS regardless of its initial redundancy tier.

Detailed technical explanation

How to think about this question

Azure Storage redundancy tiers are immutable after creation for most changes; Standard_LRS can only be upgraded to Standard_GRS or Standard_RAGRS if the account was originally created with a geo-redundant option or if the account is in a region that supports live migration, but this is not automatic and requires specific conditions. Under the hood, GRS requires synchronous replication to a secondary region, which is not possible with LRS as it only maintains three copies within a single datacenter. In real-world scenarios, organizations often mistakenly choose LRS for cost savings and later attempt to enable GRS for disaster recovery, only to find they must create a new storage account or use Azure Site Recovery instead.

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.

TExam Day Tips

  • 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this AZ-305 question test?

Design data storage solutions — This question tests Design data storage solutions — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The storage account uses Standard_LRS, which does not support GRS. — Option D is correct because Standard_LRS (Locally Redundant Storage) does not support upgrading to GRS (Geo-Redundant Storage) directly. To enable GRS, the storage account must be created with a redundancy tier that supports geo-replication, such as Standard_GRS or Standard_RAGRS. The error occurs because the ARM template specifies Standard_LRS, which only replicates data within a single datacenter and cannot be converted to a geo-redundant tier after deployment.

What should I do if I get this AZ-305 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jun 24, 2026

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This AZ-305 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-305 exam.