What is JIT and how is works ?
An acronym for “just-in-time,” a phrase that describes an action that is taken only when it becomes necessary, such as just-in-time compilation or just-in-time object activation

What is portable executable (PE) ?
The file format used for executable programs and for files to be linked together to form executable programs

What does assert() do?
In debug compilation, assert takes in a Boolean condition as a parameter, and shows the error dialog if the condition is  false. The program proceeds without any interruption if the condition is true.

What are the Main Features of .NET platform?

Features of .NET Platform are :-

Common Language Runtime
Explains the features and benefits of the common language runtime, a run-time environment that manages the of code and provides services that simplify the development process.

How many .NET languages can a single .NET DLL contain?
One

What type of code (server or client) is found in a Code-Behind class?
Server

How to set the debug mode?
Debug Mode for ASP.NET applications - To set ASP.NET appplication in debugging mode, edit the application’s web.config and assign the “debug” attribute in < compilation > section to “true” as show below:
< configuration >
  < system.web >
    < compilation defaultLanguage=”vb” debug=”true” / >
….
…
..
< / configuration >

What is the GAC? What problem does it solve?
Each computer where the common language runtime is installed has a machine-wide code cache called the global assembly cache. The global assembly cache stores assemblies that are to be shared by several applications on the computer. This area is typically the folder under windows or winnt in the machine.

How does the generational garbage collector in the
.NET CLR manage object lifetime? What is non-deterministic finalization?