Fast API MCQs with answers Page - 21

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Q. Which feature of FastAPI helps with dependency injection?

  • (A) Depends()
  • (B) Inject()
  • (C) Bind()
  • (D) Attach()

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Ravina • 3.96K Points
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Q. Which response class is used to return raw bytes data in FastAPI?

  • (A) ByteResponse
  • (B) RawResponse
  • (C) Response(content=bytes)
  • (D) BinaryResponse

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Ravina • 3.96K Points
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Q. Which of the following supports declaring file input in FastAPI?

  • (A) File()
  • (B) Path()
  • (C) Header()
  • (D) Upload()

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Q. What does `raise HTTPException(status_code=404, detail='Item not found')` do?

  • (A) Redirects the user
  • (B) Logs a warning
  • (C) Returns a 404 response with JSON error message
  • (D) Crashes the server

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Q. How do you access the full request object in a path operation?

  • (A) Use `req` parameter
  • (B) Use `request: Request` in function parameters
  • (C) Use `context` object
  • (D) Use `args` object

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Ravina • 3.96K Points
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Q. What happens if a route raises a `ValueError` and no handler is defined?

  • (A) FastAPI auto-converts it to 404
  • (B) FastAPI returns 500 Internal Server Error
  • (C) FastAPI returns 400 Bad Request
  • (D) FastAPI logs and ignores it

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Q. What does `File(..., media_type='image/png')` specify?

  • (A) Only PNG files are allowed
  • (B) Adds description for the API docs
  • (C) Sets the expected content type in API docs
  • (D) Limits the file size

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Ravina • 3.96K Points
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Q. What happens when FastAPI detects a mismatch in type for a query parameter?

  • (A) It coerces the value
  • (B) It skips validation
  • (C) It raises a 422 Unprocessable Entity error
  • (D) It returns null

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Ravina • 3.96K Points
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Q. Which of these is true about async support in FastAPI?

  • (A) All route functions must be async
  • (B) Only sync functions are allowed
  • (C) Both async and sync functions are supported
  • (D) Async functions only work with Flask

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Q. Which type of response class is best for returning HTML content in FastAPI?

  • (A) HTMLResponse
  • (B) JSONResponse
  • (C) PlainTextResponse
  • (D) FileResponse

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