Choose the namespace in which the interface IEnumerable is declared?

Which is the correct way to find out the number of elements currently present in an ArrayListCollection called arr?

What is the purpose of the Open XML SDK 2.0?

Choose the method defined by MemberInfo:

Which of the following are jobs not performed by the Garbage Collector? 1. Freeing stack memory. 2. Avoiding memory leakage. 3. Freeing memory occupied by unreferenced objects. 4. Closing unclosed database collections. 5. Closing unclosed files.

Choose the class from which the namespace ‘System.Type’ is derived:

What is the full name of the base type of all the types in .NET?

C# provides an XML documentation comment syntax by prefacing your comment lines with...

What is the default visibility for members of classes and structs in C#?

The following line of code in C#: IEnumerable aList = new List();

In order for the following to compile: using (CustomClass = new CustomClass()) { } CustomClass needs to implement which interface?