Mostly about the Java backend and AngularJS. 1. What architecture you would follow if you are asked to make an angularJS based secured application. 2. What is N + 1 problem in hibernate? 3. What and how would you do to make a secure AngularJS based application? 4. How hash map works ? 5. How garbage collection works in Java? 6. After applying all techniques on D. Base level and AngularJS level if your application is still slow what would you do?