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What does CORS middleware in FastAPI primarily control?

easy🧠 Conceptual Q1 of 15
FastAPI - Middleware and Hooks
What does CORS middleware in FastAPI primarily control?
AThe speed of API responses
BWhich external websites can access your API resources
CHow the API handles database connections
DThe format of data returned by the API
Step-by-Step Solution
Solution:

  1. Step 1: Understand CORS purpose

    CORS stands for Cross-Origin Resource Sharing, which controls access from different websites.

  2. Step 2: Identify middleware role in FastAPI

    The CORS middleware allows or blocks requests from external domains to your API.

  3. Final Answer:

    Which external websites can access your API resources -> Option B

  4. Quick Check:

    CORS controls external access = C [OK]
Quick Trick: CORS controls which sites can call your API [OK]
Common Mistakes:
MISTAKES
  • Confusing CORS with database or speed settings
  • Thinking CORS changes data format

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