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

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.

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.

The error 'Parameter supplied for object is not valid' in a copy activity using a stored procedure typically indicates that the stored procedure is expecting parameters that are not being provided correctly. The most common cause is that the source columns in the copy activity are not mapped to the stored procedure parameters. Option C is correct because the pipeline JSON likely lacks the necessary parameter mapping from source columns to stored procedure input parameters. Option A is incorrect because BlobSource is valid for Azure Blob Storage. Option B is incorrect because the error is about parameter supply, not the existence of a table type. Option D is incorrect because the error relates to parameter mapping, not dataset references.

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

    Why it's wrong here

    BlobSource is a valid source type for Azure Blob Storage in Data Factory, so this is not the cause.

  • ✗

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

    Why it's wrong here

    The error is about parameters being supplied incorrectly, not about the existence of a SQL table type.

  • ✓

    The stored procedure parameters are not mapped to source columns.

    Why this is correct

    When using a stored procedure as a sink, source columns must be explicitly mapped to the stored procedure parameters. If this mapping is missing or incorrect, the 'Parameter supplied for object is not valid' error occurs.

    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.

  • ✗

    The dataset references are incorrect.

    Why it's wrong here

    While incorrect dataset references can cause issues, the specific error message points to a parameter issue, not dataset names.

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.

Quick reference

Azure Blob Storage Tier Comparison

TierStorage CostRetrieval CostLatencyUse Case
HotHighestLowestImmediateActive data, frequent reads
CoolLowerHigherImmediateData accessed < once / month
ColdLower stillHigherImmediateData accessed < once / quarter
ArchiveLowestHighest + rehydration delayHoursLong-term compliance retention

What to study next

Got this wrong? Here's your next step.

Identify which DP-203 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 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 — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The stored procedure parameters are not mapped to source columns. — The error 'Parameter supplied for object is not valid' in a copy activity using a stored procedure typically indicates that the stored procedure is expecting parameters that are not being provided correctly. The most common cause is that the source columns in the copy activity are not mapped to the stored procedure parameters. Option C is correct because the pipeline JSON likely lacks the necessary parameter mapping from source columns to stored procedure input parameters. Option A is incorrect because BlobSource is valid for Azure Blob Storage. Option B is incorrect because the error is about parameter supply, not the existence of a table type. Option D is incorrect because the error relates to parameter mapping, not dataset references.

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

Identify which DP-203 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.

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 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.