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Implement knowledge mining and information extraction solutions →easyMultiple ChoiceObjective-mapped

AI-102 Practice Question: Implement knowledge mining and information extraction solutions

This AI-102 practice question tests your understanding of implement knowledge mining and information extraction solutions. 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

Refer to the exhibit.
```json
{
  "dataSource": {
    "name": "my-blob-datasource",
    "type": "azureblob",
    "credentials": {
      "connectionString": "DefaultEndpointsProtocol=https;AccountName=mystorage;AccountKey=...;EndpointSuffix=core.windows.net"
    },
    "container": {
      "name": "documents",
      "query": ""
    }
  }
}
```

You have the above data source definition for Azure AI Search. You want to index only PDF files from the 'documents' container. How should you modify the data source?

Exhibit

Refer to the exhibit.
```json
{
  "dataSource": {
    "name": "my-blob-datasource",
    "type": "azureblob",
    "credentials": {
      "connectionString": "DefaultEndpointsProtocol=https;AccountName=mystorage;AccountKey=...;EndpointSuffix=core.windows.net"
    },
    "container": {
      "name": "documents",
      "query": ""
    }
  }
}
```

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

✓

Set the 'query' field to a blob prefix that corresponds to the folder containing PDF files.

Option A is correct because Azure AI Search data sources support a 'query' property that accepts a blob prefix or virtual directory path. By setting 'query' to the folder path containing PDFs (e.g., 'documents/pdfs/'), the indexer will only process blobs under that prefix, effectively filtering to PDF files without moving or renaming containers.

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.

  • ✓

    Set the 'query' field to a blob prefix that corresponds to the folder containing PDF files.

    Why this is correct

    Filters to that folder.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    Change the container name to 'pdfs' and move all PDFs there.

    Why it's wrong here

    Requires moving files.

  • ✗

    Add a 'fileExtension' property to the container object.

    Why it's wrong here

    Not a valid property.

  • ✗

    Change the connection string to use a different storage account that contains only PDFs.

    Why it's wrong here

    Not practical.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume filtering must be done by file extension or container name, but Azure AI Search's blob indexer supports prefix-based filtering via the 'query' field, which is the simplest and most performant method for selecting blobs from a specific folder or path.

Detailed technical explanation

How to think about this question

The 'query' field in an Azure AI Search data source of type 'AzureBlob' maps to a blob prefix, which is essentially a virtual directory path (e.g., 'documents/pdfs/'). Under the hood, the indexer uses the Azure Blob Storage REST API to list blobs with the specified prefix, and only those blobs are fetched for indexing. This approach is efficient because it avoids scanning the entire container and is commonly used in multi-tenant or partitioned storage scenarios where logical separation is needed without physical data movement.

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 AI-102 question test?

Implement knowledge mining and information extraction solutions — This question tests Implement knowledge mining and information extraction solutions — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Set the 'query' field to a blob prefix that corresponds to the folder containing PDF files. — Option A is correct because Azure AI Search data sources support a 'query' property that accepts a blob prefix or virtual directory path. By setting 'query' to the folder path containing PDFs (e.g., 'documents/pdfs/'), the indexer will only process blobs under that prefix, effectively filtering to PDF files without moving or renaming containers.

What should I do if I get this AI-102 question wrong?

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

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jul 4, 2026

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This AI-102 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 AI-102 exam.