NET is an infrastructure that consists of multiple features like application domain, a common type system and profiling. Isolating one or two important pieces may be a challenge, but the interviewer may be looking for the answers “class library” and “Common Language Runtime.” It’s critical to make a case for why those are the most essential features. This is an opportunity to show your skills go beyond just technical because you can also apply critical thinking.

Example: “Common Language Runtime and Class library are the most important aspects of the .NET Framework. CLR provides building tools and resources that help developers set the foundation for application building. The class library holds essential classes used for providing commonly known functionality that is shareable across applications.”