You have an ASP.NET Web Forms application for processing orders.
Many users of the application submit their order forms multiple times due to incorrectly formatted credit
card information.
You need to plan for validation of the length and format of data in the credit card field on the client side prior
to processing each transaction.
Which approach should you recommend?

• A. Use a RequiredFieldValidator control and a RegularExpressionValidator control.
• B. Use a RequiredFieldValidator control and a CompareValidator control.
• C. Use a CustomValidator control in the Page_Load method.
• D. Use a CustomValidator control in the OnServerValidate method.

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Communication Foundation (WCF) Data Services service. The service connects to a Microsoft SQL Server 2008 database. The service is hosted by an Internet Information Services (IIS) 6.0 Web server.
The application works correctly in the development environment. However, when you connect to the service on the production server, attempting to update or delete an entity results in an error. You need to ensure that you can update and delete entities on the production server. What should you do?

• A. Configure IIS to allow the PUT and DELETE verbs for the .svc Application Extension.
• B. Configure IIS to allow the POST and DELETE verbs for the .svc Application Extension.
• C. Add the following line of code to the InitializeService method of the service. config.SetEntitySetAccessRule ("*",EntitySetRights.WriteDelete | EntitySetRights.WriteMerge);
• D. Add the following line of code to the InitializeService method of the service. config.SetEntitySetAccessRule ("*",EntitySetRights.WriteDelete | EntitySetRights.WriteInsert);

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

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application uses the ADO.NET Entity Framework to manage customer and related order records. You add a new order for an existing customer. You need to associate the Order entity with the Customer entity. What should you do?

• A. Call the Add method on the EntityCollection of the Order entity.
• B. Use the Attach method of the ObjectContext to add both Order and Customer entities.
• C. Use the AddObject method of the ObjectContext to add both Order and Customer entities.
• D. Set the Value property of the EntityReference of the Order entity.