Some major questions were (C#/Dotnet) - CLR, Garbage collection, Managed/Unmanaged code, Abstract class/Interfaces, Class/Structure, Extension methods, Generics, Multiple inheritance in C#, Boxing/Unboxing, Indexers, Runtime polymorphism, String Builder. Web API, AJAX, Structure of Dotnet Application, Caching, Session, ViewStart, Validations, WCF, HTTP. What is JS, common issues with JS.