Pergunta de entrevista da empresa BNY

Round 3. Parts 1,2 Technical Questions: Array and Linked List, what to use when? Polymorphism and Abstraction explanation (This was asked twice) Difference between abstract classes and interfaces Singleton Design Patterns Difference between synchronous and asynchronous How will asynchronous threads/processes communicate with each other Difference between BFS and DFS and which one consumes more memory? Memory leaking in Java Some big data related concepts. Specifically scala, kafka(I am a big data novice so I could not answer these)