When to use an Interface?

 Posted by Vishalneeraj-24503 on 3/1/2015 | Category: Visual Studio Interview questions | Views: 1088 | Points: 40
Select from following answers:
  1. When there are a group of related methods that may be called.
  2. A class only needs one implementation of the method.
  3. The class using the interface will want to cast that interface to other interface or class types.
  4. The method being implemented is linked to the type or identity of the class, for example, comparison methods.
  5. All Above

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