[Solved] Why is authentication necessary when building NestJS APIs? — Ans: To verify the identity of users accessing the API | NestJS

NestJS - Authentication

Why is authentication necessary when building NestJS APIs?

ATo reduce the size of API payloads

BTo verify the identity of users accessing the API

CTo improve the speed of API responses

DTo automatically generate API documentation

Step-by-Step Solution

Solution:

Step 1: Understand the role of authentication in APIs
Authentication checks who is making the request to the API.
Step 2: Identify the purpose of verifying user identity
Verifying identity helps protect sensitive data and restrict access to authorized users only.
Final Answer:
To verify the identity of users accessing the API -> Option B
Quick Check:
Authentication purpose = Verify identity [OK]

Quick Trick: Authentication confirms user identity before access [OK]

Common Mistakes:

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Why is authentication necessary when building NestJS APIs?