diff between delete & truncate, what is view, how to implement index and how they works, what are cluster and non-cluster index and how they works, diff between viewbag & viewdata, asp.net page lifecycle, write a program to get the count of duplicate characters and also replace some characters with empty string with using Replace function and string.Empty method. Eager loading, lazy loading. asynchronous coding. thread and tasks. CORS in web api, content negotiation, why attribute routing and convention based routing. diff between PUT, POST, GET. also lot more.