Pergunta de entrevista da empresa Accenture

1.how nodejs works? 2.explain event queue and how it works? 3. callback ? 4>callback hell? 5. REPEL 6. flow of control system 7. websocket 8. JWT tocken 9. how to create normal webserver 10. monogdb connection 11. socker emmitter 12..env 13. setImmidiate and process.exec