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

1. You are designing a user input form that is part of an ASP.NET Web Forms application. You need to ensure that users cannot attack the Web server by submitting invalid data. Which approach should you recommend?

A) Write an onSubmit JavaScript handler that validates all form input.
B) Write an onSubmit JavaScript handler that URL-encodes all data that is passed to the server.
C) Write an OnClick method for the Submit button that rejects form submissions that contain invalid data.
D) Install a certificate on the Web server, and force all Web traffic to use SSL.

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The application connects to a Microsoft SQL Server 2008 database. The application uses DataContexts to query the database. You create a function that meets the following requirements: "Updates the Customer table on the database when a customer is marked as deleted. "Updates the related entries in other tables (CustomerAddress, CustomerContacts) by marking them as deleted. "Prevents consumer code from setting the Deleted column's value directly. You need to ensure that the function verifies that customers have no outstanding orders before they are marked as deleted. You also need to ensure that existing applications can use the update function without requiring changes in the code. What should you do?

A) Add new entities to the DataContext object for the Customers and Orders tables.
B) Modify the SELECT SQL statement provided to the DataContext object to use an INNER JOIN between the Customer and Orders tables.
C) Override the Update operation of the DataContext object.
D) Override the Delete operation of the DataContext object.

3. You are troubleshooting an ASP.NET Web application. System administrators have recently expanded your
web farm from one to two servers. Users are periodically reporting an error message about invalid view
state.
You need to fix the problem.
What should you do?

A) Set viewStateEncryptionMode to Auto in web.config on both servers.
B) Change the session state mode to SQL Server on both servers and ensure both servers use the same connection string.
C) Override the SavePageStateToPersistenceMedium and LoadPageStateFromPersistenceMedium methods in the page base class to serialize the view state to a local web server file.
D) Set the machineKey in machine.config to the same value on both servers.

4. 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);

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. The
application connects to a Microsoft SQL Server database. The application has two DataTable objects that
reference the Customers and Orders tables in the database. The application contains the following code
segment. (Line numbers are included for reference only.
01DataSet customerOrders = new DataSet();
02customerOrders.EnforceConstraints = true;
03ForeignKeyConstraint ordersFK = new ForeignKeyConstraint("ordersFK",
04customerOrders.Tables["Customers"].Columns["CustomerID"],
05customerOrders.Tables["Orders"].Columns["CustomerID"]);
06
07customerOrders.Tables["Orders"].Constraints.Add(ordersFK);
You need to ensure that an exception is thrown when you attempt to delete Customer records that have
related Order records. Which code segment should you insert at line 06?

A) ordersFK.DeleteRule = Rule.None;
B) ordersFK.DeleteRule = Rule.Cascade;
C) ordersFK.DeleteRule = Rule.SetDefault;
D) ordersFK.DeleteRule = Rule.SetNull;

Solutions: