[Solved] What is the primary role of the helmet middleware in a NestJS application? — Ans: To enhance security by setting various HTTP headers | NestJS

NestJS - Middleware

What is the primary role of the helmet middleware in a NestJS application?

ATo enhance security by setting various HTTP headers

BTo enable cross-origin resource sharing

CTo parse incoming JSON requests

DTo manage session cookies

Step-by-Step Solution

Solution:

Step 1: Understand Helmet's purpose
Helmet is a middleware designed to improve security by setting HTTP headers that protect against common vulnerabilities.
Step 2: Compare with other middleware roles
CORS handles cross-origin requests, JSON parsing is done by body-parser, and session cookies are managed by session middleware, not Helmet.
Final Answer:
To enhance security by setting various HTTP headers -> Option A
Quick Check:
Helmet = Security headers [OK]

Quick Trick: Helmet sets security headers, not CORS or parsing [OK]

Common Mistakes:

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