A difference between a struct and a class is that...

Extension methods in C#...

In C#, if you would like to create a class across multiple files, you should precede the class definition with...

How many classes can a single class inherit?

From which class do you need to derive to implement a custom attribute?

Applications written in C# require the .NET framework...

Consider the following code: class Program { static void Main(string[] args) { float f = double d = decimal dc = 0; PrintDouble(f); // Statement 1 PrintDouble(d); // Statement 2 PrintDouble(dc); // Statement 3 } static private void PrintDouble(double d) { Console.WriteLine(d.ToString()); } } Which of the following are true?

Which of the following predefined attributes in C# ?

Where should auto implemented properties be initialized to a Default value? 

Select the type argument of an open constructed type.

Which of the following interfaces are declared in the System.Collections namespace? (Choose all that apply)