Differrence between Array.CopyTo() and Array.Clone()

When do you absolutely have to declare a class as abstract?

What’s the advantage of using System.Text.StringBuilder over System.String?

Difference between VB.NET and C#.

what is Static?

How do you optimize stored procedures in SQL Server 2005

State some limitations of style sheets?

What is a Linked Server?

What is a satellite assembly?

What is DESCRIBE command in SQL Server 2005? What is its purpose? How to use it?