DRAG DROP
You are developing a WCF service. The WCF service requires implementations of the new
data contracts to validate against the old schema. You need to develop a new data contract
without breaking current functionality. What should you do? (To answer, drag the appropriate
code segments to the correct location or locations in the answer area. Each code segment
may be used once, more than once, or not at all. You may need to drag the split bar
between panes or scroll to view content.)
Answer: 
attributes are same for both classes
[DataContract(Name=”Profile”)]
[DataContract(Name=”Profile”)]
https://msdn.microsoft.com/en-us/library/ms731138(v=vs.110).aspx