Most of questions are on C# , Asp .net, Data structures and SQL. Technical Questions 1. Difference between abstract class and interface 2. Difference between deep copy and shallow copy 3. What is Stack? Implement it? 4. What is Queue? 5.What is sealed keyword in .net? Explain? 6. Auto boxing and unboxing concept 7. Ask you codes related to tree, graph, arrays, linked list 8. What is binary tree? Types of binary tree Questions related to geometry 1.Questions related to vector algebra 2.Pythagoras theorem Questions will be asked based on your answer to previous questions. So beware while answering. Don't give wrong answers. If you don't know the answer then also its ok but your approch should be good enough.