Which of the following are true regarding the System.Collections.Generic.HashSet<T> class?

Which is true about System.Security.Cryptography under version 3.5 of the framework

Determining the availability of sufficient memory for an operation can be accomplished by:

Which characteristics are found in a query expression?

The default number of threads per processor in the System.Threading.ThreadPool class under version 3.5 of the Framework is:

What impact will using implicitly typed local variables as in the following example have? var sample = 'Hello World';

Which are true about event handling?

Which encodings are NOT supported by classes in the System.Text namespace?

Which conditions are true regarding System.Diagnostics.Trace?

Which are true about namespaces and assemblies?

Which of the listed characteristics is found in the following code sample? [DllImport('msvcrt.dll')] public static extern int puts([MarshalAs(UnmanagedType.LPStr)] string m);