What are we referring to when we talk about the .NET CTS?

Purpose:

• This question checks whether a developer has a understanding of the actual engine under the hood
• Shows that they are not Code-by-Google type of developers

Potential Answer:
We are referring to the Common Type System (CTS)

It describes set of data types that can be used in different .Net languages in common. (i.e), CTS ensures that objects written in different .Net languages can interact with each other.

For Communicating between programs written in any .NET complaint language, the types have to be compatible on the basic level. These types are either reference or value types.