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

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

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?

⚠ Common exam trap

Many exam-takers 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.

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.

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.

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.
✗
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.

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

Exhibit

Why each option matters

Option-by-option breakdown

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