What is the issue with this Node.js Express code snippet when sending a 204 No Content response?

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Rest API - HTTP Status Codes

What is the issue with this Node.js Express code snippet when sending a 204 No Content response?

res.status(204).json({ success: true });

A204 responses must not include a response body, so sending JSON is incorrect

BThe status code 204 is invalid for JSON responses

CThe .json() method automatically changes status to 200

DNo issue; this is a valid way to send a 204 response

Step-by-Step Solution

Solution:

Step 1: Understand 204 semantics
204 means no content; sending JSON violates this rule.
Step 2: Express behavior
.json() sends a response body, which is disallowed with 204.
Final Answer:
204 responses must not include a response body, so sending JSON is incorrect -> Option A
Quick Check:
204 cannot have body content [OK]

Quick Trick: 204 status must not send any response body [OK]

Common Mistakes:

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