Your question is Authentication Across Microservices. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about how authentication and authorization work among microservices at NVIDIA.
Explain how services establish identity, authenticate requests, authorize operations, and safely propagate user or service context across internal REST APIs. Compare common approaches such as mTLS, OAuth 2.0 access tokens, JWT validation, service accounts, and centralized policy checks.
Keep the answer focused on service-to-service communication, token validation, least privilege, credential rotation, and failure handling.