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Microsoft UPG:Transition MCPD.NET Frmwrk 3.5 Web Dev to 4 Web Dev Sample Questions:

1. You are creating a Windows Communication Foundation (WCF) service. You do not want to expose the internal implementation at the service layer. You need to expose the following class as a service named Arithmetic with an operation named Sum. public class Calculator {
public int Add(int x, int y)
{
}
}
Which code segment should you use?

A) [ServiceContract(Name="Arithmetic")] public class Calculator {
[OperationContract(Name="Sum")]
public int Add(int x, int y)
{
...
}
}
B) [ServiceContract(ConfigurationName="Arithmetic")] public class Calculator {
[OperationContract(Action="Sum")]
public int Add(int x, int y)
{
...
}
}
C) [ServiceContract(Name="Arithmetic")] public class Calculator {
[OperationContract(ReplyAction="Sum")]
public int Add(int x, int y)
{
...
}
}
D) [ServiceContract(Namespace="Arithmetic")] public class Calculator {
[OperationContract(Action="Sum")]
public int Add(int x, int y)
{
...
}
}

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. You use the ADO.NET Entity Data Model (EDM) to define a Customer entity. You need to add a new Customer to the data store without setting all the customer's properties. What should you do?

A) Override the SaveChanges method for the Customer object.
B) Override the Create method for the Customer object.
C) Call the CreateObject method of the Customer object.
D) Call the Create method of the Customer object.

3. You need to design a solution for programmatically adding reusable user-interface code to views and allowing the user-interface code to be rendered from the server side. Which approach should you recommend

A) Create a controller that returns an ActionResult.
B) Create a jQuery library plug-in.
C) Create a WebForm server control that stores values in ViewState.
D) Create an HtmlHelper extension method.

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The
application connects to a Microsoft SQL Server database. You write the following code segment that
executes two commands against the database within a transaction. (Line numbers are included for
reference only.)
01using (SqlConnection connection = new SqlConnection(cnnStr)) {
02connection.Open();
03SqlTransaction sqlTran = connection.BeginTransaction();
04SqlCommand command = connection.CreateCommand();
05command.Transaction = sqlTran;
06try {
07command.CommandText = "INSERT INTO Production.ScrapReason(Name) VALUES('Wrong size')";
08command.ExecuteNonQuery();
09command.CommandText = "INSERT INTO Production.ScrapReason(Name) VALUES('Wrong color')";
10command.ExecuteNonQuery();
11
12}
You need to log error information if the transaction fails to commit or roll back.
Which code segment should you insert at line 11?

A) sqlTran.Commit(); } catch (Exception ex) { Trace.WriteLine(ex.Message); try {
sqlTran.Rollback();
}
catch (Exception exRollback) {
Trace.WriteLine(exRollback.Message);
} } }
B) sqlTran.Commit(); } catch (Exception ex) { sqlTran.Rollback(); Trace.WriteLine(ex.Message); }
C) catch (Exception ex){ Trace.WriteLine(ex.Message); try{ sqlTran.Rollback(); } catch (Exception exRollback){ Trace.WriteLine(exRollback.Message); }} finaly { sqltran.commit( );}}
D) catch (Exception ex) { sqlTran.Rollback(); Trace.WriteLine(ex.Message); } finaly { try { sqltran.commit( ); } catch (Exception exRollback) { Trace.WriteLine(excommit.Message); }}

5. Windows Communication Foundation (WCF) application uses a data contract that has several data members. You need the application to throw a Serialization Exception if any of the data members are not present when a serialized instance of the data contract is deserialized. What should you do?

A) Add the Known Type attribute to the data contract.Set the Order property of each data member to unique integer value.
B) Set the IsRequired property of each data member to true.
C) Set the Emit Default Value property of each data member to false.
D) Add the Known Type attribute to the data contract.Set a default value in each of the data member declarations.

Solutions: