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

Quick Answer

The answer is that the stored procedure parameters are not mapped to source columns. This is the most likely cause because when a copy activity in Azure Data Factory invokes a stored procedure, each parameter must be explicitly linked to a source column from the dataset; a static string value like 'value1' bypasses that mapping, triggering the 'Parameter supplied for object is not valid' error. On the Microsoft Azure Data Engineer Associate DP-203 exam, this scenario tests your understanding of how ADF handles parameterized stored procedures during data movement, often appearing as a trap where candidates assume static values are acceptable. A common memory tip is to remember that stored procedure parameters in a copy activity are always dynamic—they must draw their values from source columns, not hardcoded strings. Think of it as "map or fail": if you see a static value in a stored procedure parameter definition within a copy activity, the pipeline will reject it.

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. 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

Refer to the exhibit.
{
  "name": "CopyDataPipeline",
  "properties": {
    "activities": [
      {
        "name": "CopyFromBlobToSQL",
        "type": "Copy",
        "inputs": [{"referenceName": "BlobInput", "type": "DatasetReference"}],
        "outputs": [{"referenceName": "SQLOutput", "type": "DatasetReference"}],
        "typeProperties": {
          "source": {
            "type": "BlobSource"
          },
          "sink": {
            "type": "SqlSink",
            "sqlWriterStoredProcedureName": "usp_InsertData",
            "sqlWriterTableType": "dbo.InsertType",
            "storedProcedureParameters": {
              "Param1": {
                "value": "value1"
              }
            }
          }
        }
      }
    ]
  }
}

You are reviewing an Azure Data Factory pipeline JSON that copies data from Azure Blob Storage to Azure SQL Database using a stored procedure. The pipeline fails with a 'Parameter supplied for object is not valid' error. 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.
{
  "name": "CopyDataPipeline",
  "properties": {
    "activities": [
      {
        "name": "CopyFromBlobToSQL",
        "type": "Copy",
        "inputs": [{"referenceName": "BlobInput", "type": "DatasetReference"}],
        "outputs": [{"referenceName": "SQLOutput", "type": "DatasetReference"}],
        "typeProperties": {
          "source": {
            "type": "BlobSource"
          },
          "sink": {
            "type": "SqlSink",
            "sqlWriterStoredProcedureName": "usp_InsertData",
            "sqlWriterTableType": "dbo.InsertType",
            "storedProcedureParameters": {
              "Param1": {
                "value": "value1"
              }
            }
          }
        }
      }
    ]
  }
}

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 stored procedure parameters are not mapped to source columns.

Option B is correct because the stored procedure parameter 'Param1' is defined with a static string value 'value1', but the copy activity should map source columns to stored procedure parameters. Option A is wrong because the source type is valid. Option C is wrong because dataset references are correctly structured. Option D is wrong because the error is about parameters, not dataset names.

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 source type 'BlobSource' is not compatible with Azure Blob Storage.

    Why it's wrong here

    BlobSource is correct for Azure Blob Storage.

  • ✗

    The SQL table type 'dbo.InsertType' does not exist.

    Why it's wrong here

    Error indicates parameter issue, not table type.

  • ✓

    The stored procedure parameters are not mapped to source columns.

    Why this is correct

    Copy activity needs mapping from source columns to stored procedure parameters.

    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.

  • ✗

    The dataset references are incorrect.

    Why it's wrong here

    Dataset references appear correct.

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 stored procedure parameters are not mapped to source columns. — Option B is correct because the stored procedure parameter 'Param1' is defined with a static string value 'value1', but the copy activity should map source columns to stored procedure parameters. Option A is wrong because the source type is valid. Option C is wrong because dataset references are correctly structured. Option D is wrong because the error is about parameters, not dataset names.

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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This DP-203 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 DP-203 exam.