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A client sends a POST request to create a new user, but the server responds with a 404 error. What is the most likely cause?

medium📝 Debug Q14 of 15
Rest API - REST API Fundamentals
A client sends a POST request to create a new user, but the server responds with a 404 error. What is the most likely cause?
AThe client sent too much data
BThe client used the wrong HTTP method
CThe server successfully created the user
DThe server URL endpoint is incorrect or missing
Step-by-Step Solution
Solution:

  1. Step 1: Understand 404 error meaning

    404 means the requested URL or endpoint was not found on the server.

  2. Step 2: Link error to cause

    If POST returns 404, likely the client sent request to wrong or missing URL.

  3. Final Answer:

    The server URL endpoint is incorrect or missing -> Option D

  4. Quick Check:

    404 means URL not found [OK]
Quick Trick: 404 means wrong or missing URL endpoint [OK]
Common Mistakes:
MISTAKES
  • Confusing 404 with method error
  • Assuming success on 404
  • Thinking data size causes 404

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