Pregunta de entrevista de NatWest Group

Round 1 Questions: What are solid design principals? How does spring implement IOC? Types of interfaces in Java 8? Pros and cons of the default method in interface? What is Strategy design pattern? What is Facade design pattern? Type of List implementations in Java? A small spring boot application service implemtation of Finding the highest scoring student of a coaching center and the students who has scored more than 40% marks?