Fast API MCQs with answers Page - 18

Here, you will find a collection of MCQ questions on Fast API. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which file type can be uploaded using `UploadFile` in FastAPI?

  • (A) Only .txt files
  • (B) Only image files
  • (C) Only JSON files
  • (D) Any file type

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Q. Which method is used to mount sub-applications in FastAPI?

  • (A) use_subapp()
  • (B) add_subapp()
  • (C) mount()
  • (D) bind_app()

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Ravina • 3.96K Points
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Q. Which parameter in `Query()` restricts values to a set of choices?

  • (A) options
  • (B) enum
  • (C) choices
  • (D) allowed

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Q. How does FastAPI detect whether a parameter is a path, query, or body parameter?

  • (A) Using parameter name
  • (B) Using position in function signature
  • (C) Using type hint and default value
  • (D) Using runtime introspection

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Q. How can you modify the title of the OpenAPI docs in FastAPI?

  • (A) app.settings.title = 'New Title'
  • (B) app.openapi_title = 'New Title'
  • (C) FastAPI(title='New Title')
  • (D) app.docs_title = 'New Title'

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Ravina • 3.96K Points
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Q. How can you provide custom exception handling in FastAPI?

  • (A) By overriding `handle_exception()`
  • (B) By using Flask errorhandler
  • (C) By using `@app.exception_handler()`
  • (D) By setting `raise_on_error=True`

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Q. What does the parameter `description` in `Query()` do?

  • (A) Validates the length
  • (B) Shows extra info in OpenAPI docs
  • (C) Prevents empty values
  • (D) Sets default fallback values

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Q. What is `FormData` used for in FastAPI?

  • (A) To receive JSON requests
  • (B) To serve HTML content
  • (C) To parse x-www-form-urlencoded data
  • (D) To send files

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Ravina • 3.96K Points
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Q. What does `status_code=204` represent in FastAPI?

  • (A) Bad request
  • (B) No content
  • (C) Created
  • (D) Reset content

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Q. What does `BaseSettings` class in FastAPI provide?

  • (A) WebSocket interface
  • (B) CORS management
  • (C) Environment variable support using Pydantic
  • (D) Database transaction manager

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