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Why is it important to separate authentication and authorization in a microservices RBAC system?

hard📝 Conceptual Q10 of 15
Microservices - Authentication and Authorization
Why is it important to separate authentication and authorization in a microservices RBAC system?
ABecause authentication encrypts data, and authorization scales services
BBecause authentication verifies identity, while authorization controls access based on roles
CBecause authorization replaces authentication in RBAC
DBecause authentication manages service discovery, authorization manages load balancing
Step-by-Step Solution
Solution:

  1. Step 1: Define authentication and authorization

    Authentication confirms who the user is; authorization decides what they can do.

  2. Step 2: Understand their roles in RBAC

    RBAC uses authentication to identify users, then authorization to check roles and permissions.

  3. Final Answer:

    Because authentication verifies identity, while authorization controls access based on roles -> Option B

  4. Quick Check:

    AuthN = identity, AuthZ = access control [OK]
Quick Trick: Authentication = who, Authorization = what [OK]
Common Mistakes:
MISTAKES
  • Mixing authentication with encryption
  • Confusing authorization with scaling
  • Assuming authorization replaces authentication

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