Fast API MCQs with answers Page - 16

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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Ravina • 3.96K Points
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Q. What is the purpose of the `tags` parameter in FastAPI route decorators?

  • (A) To restrict access
  • (B) To categorize endpoints in API docs
  • (C) To define middleware
  • (D) To trigger background tasks

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Ravina • 3.96K Points
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Q. Which of the following is used to validate cookies in FastAPI?

  • (A) Cookie()
  • (B) Header()
  • (C) Query()
  • (D) Body()

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Ravina • 3.96K Points
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Q. Which function in FastAPI is used to read request body as plain text?

  • (A) await request.body()
  • (B) request.get_json()
  • (C) request.plain()
  • (D) request.read_text()

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Ravina • 3.96K Points
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Q. How can you create dependencies that are only evaluated once per request in FastAPI?

  • (A) use_cache=True in Depends
  • (B) singleton=True
  • (C) cache=True
  • (D) shared=True

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Ravina • 3.96K Points
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Q. Which command installs FastAPI with all optional dependencies?

  • (A) pip install fastapi[extras]
  • (B) pip install fastapi[all]
  • (C) pip install fastapi[full]
  • (D) pip install fastapi+

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Ravina • 3.96K Points
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Q. Which of the following allows response content to be streamed in FastAPI?

  • (A) StreamContent
  • (B) StreamingResponse
  • (C) FileStream
  • (D) ResponseStream

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Ravina • 3.96K Points
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Q. Which method is used in FastAPI to test endpoints without an external client?

  • (A) fastapi.Client()
  • (B) APITestClient
  • (C) TestClient
  • (D) HttpTester

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Ravina • 3.96K Points
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Q. How do you define a required query parameter in FastAPI?

  • (A) By not assigning a default value
  • (B) By setting `required=True`
  • (C) By using `Query(...)`
  • (D) By setting `None` as default

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Ravina • 3.96K Points
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Q. What happens if a Pydantic model has extra fields not defined in its schema?

  • (A) They are included in the response
  • (B) They are ignored unless `extra='allow'` is used
  • (C) They raise a runtime warning
  • (D) They are converted to null

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Ravina • 3.96K Points
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Q. Which of the following is used for file uploads in FastAPI?

  • (A) FileField
  • (B) UploadObject
  • (C) UploadFile
  • (D) FileUpload

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