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Secure, monitor, and optimize data storage and data processing →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is that the storage account lacks a configured event subscription for blob creation. A BlobEventsTrigger in Azure Data Factory is not a polling-based trigger; it relies on Azure Event Grid to receive notifications when a blob is created or deleted, and this requires an explicit event subscription on the storage account to route those events to the trigger. Without that subscription, the trigger never fires, even if the pipeline and trigger definition are correct. On the DP-203 exam, this is a classic trap: candidates often assume the trigger definition alone is sufficient, but the exam tests your understanding that BlobEventsTrigger is event-driven and depends on an external Event Grid subscription. A common memory tip is “BlobEventsTrigger needs a subscription, not just definition”—think of it as a doorbell that only works if the doorbell wire is connected to the house.

DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing

This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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

Refer to the exhibit.

{
  "triggers": [
    {
      "name": "DailyTrigger",
      "properties": {
        "type": "ScheduleTrigger",
        "typeProperties": {
          "recurrence": {
            "frequency": "Day",
            "interval": 1,
            "startTime": "2024-01-01T00:00:00Z",
            "timeZone": "UTC"
          }
        },
        "pipelines": [
          {
            "pipelineReference": {
              "referenceName": "CopyPipeline"
            },
            "parameters": {}
          }
        ]
      }
    },
    {
      "name": "BlobTrigger",
      "properties": {
        "type": "BlobEventsTrigger",
        "typeProperties": {
          "blobPathBeginsWith": "/input/",
          "events": ["Microsoft.Storage.BlobCreated"]
        },
        "pipelines": [
          {
            "pipelineReference": {
              "referenceName": "ProcessPipeline"
            },
            "parameters": {}
          }
        ]
      }
    }
  ]
}

Refer to the exhibit. You have an Azure Data Factory with two triggers defined as shown. The DailyTrigger runs the CopyPipeline every day at midnight UTC. The BlobTrigger runs the ProcessPipeline when a blob is created in the /input/ folder. You notice that the ProcessPipeline is not executing even though blobs are being created. What is the most likely cause?

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

Refer to the exhibit.

{
  "triggers": [
    {
      "name": "DailyTrigger",
      "properties": {
        "type": "ScheduleTrigger",
        "typeProperties": {
          "recurrence": {
            "frequency": "Day",
            "interval": 1,
            "startTime": "2024-01-01T00:00:00Z",
            "timeZone": "UTC"
          }
        },
        "pipelines": [
          {
            "pipelineReference": {
              "referenceName": "CopyPipeline"
            },
            "parameters": {}
          }
        ]
      }
    },
    {
      "name": "BlobTrigger",
      "properties": {
        "type": "BlobEventsTrigger",
        "typeProperties": {
          "blobPathBeginsWith": "/input/",
          "events": ["Microsoft.Storage.BlobCreated"]
        },
        "pipelines": [
          {
            "pipelineReference": {
              "referenceName": "ProcessPipeline"
            },
            "parameters": {}
          }
        ]
      }
    }
  ]
}

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 does not have an event subscription configured for blob creation.

Option B is correct because BlobEventsTrigger requires a storage event subscription, which must be configured separately. Option A is wrong because the trigger is properly defined with the event type. Option C is wrong because the container is not specified; but the path begins with /input/ which implies a container. Option D is wrong because pipeline parameters are not required.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

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 blobPathBeginsWith property is missing the container name.

    Why it's wrong here

    The path /input/ implies a container named 'input'; it is valid.

  • ✗

    The BlobEventsTrigger is configured to listen to the wrong event type.

    Why it's wrong here

    The event type Microsoft.Storage.BlobCreated is correct for blob creation.

  • ✗

    The ProcessPipeline expects parameters that are not provided by the trigger.

    Why it's wrong here

    The trigger passes an empty parameters object, so no parameters are required.

  • ✓

    The storage account does not have an event subscription configured for blob creation.

    Why this is correct

    BlobEventsTrigger requires an event subscription to route events to Data Factory.

    Clue confirmation

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

    Related concept

    Static NAT maps one inside address to one outside address.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

  • Static NAT maps one inside address to one outside address.
  • PAT allows many inside hosts to share one public address using ports.
  • Inside local and inside global describe the private and translated addresses.
  • NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

  • Identify inside and outside interfaces first.
  • Check whether the scenario needs static NAT, dynamic NAT or PAT.
  • Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

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 the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DP-203 NAT questions on configuration and troubleshooting.

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FAQ

Questions learners often ask

What does this DP-203 question test?

Secure, monitor, and optimize data storage and data processing — This question tests Secure, monitor, and optimize data storage and data processing — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: The storage account does not have an event subscription configured for blob creation. — Option B is correct because BlobEventsTrigger requires a storage event subscription, which must be configured separately. Option A is wrong because the trigger is properly defined with the event type. Option C is wrong because the container is not specified; but the path begins with /input/ which implies a container. Option D is wrong because pipeline parameters are not required.

What should I do if I get this DP-203 question wrong?

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DP-203 NAT questions on configuration and troubleshooting.

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?

Static NAT maps one inside address to one outside address.

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Last reviewed: Jun 21, 2026

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