What is the main purpose of an API key in API key authentication?

easy🧠 Conceptual Q11 of Q15

Rest API - Authentication and Authorization

ATo store user passwords securely

BTo encrypt the data sent between client and server

CTo control and restrict access to the API

DTo speed up the API response time

Step-by-Step Solution

Solution:

Step 1: Understand the role of API keys
API keys are used to identify and authorize clients accessing an API.
Step 2: Differentiate from other security methods
API keys do not encrypt data or store passwords; they control access.
Final Answer:
To control and restrict access to the API -> Option C
Quick Check:
API key = Access control [OK]

Quick Trick: API keys control who can use the API, not data encryption [OK]

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