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

1. 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 uses a DataTable named
OrderDetailTable that has the following columns: "ID "OrderID "ProductID "Quantity "LineTotal Some
records contain a null value in the LineTotal field and 0 in the Quantity field. You write the following code
segment. (Line numbers are included for reference only.)
01DataColumn column = new DataColumn("UnitPrice", typeof(double));
02
03OrderDetailTable.Columns.Add(column);
You need to add a calculated DataColumn named UnitPrice to the OrderDetailTable object. You also need
to ensure that UnitPrice is set to 0 when it cannot be calculated. Which code segment should you insert at
line 02?

A) column.Expression = "iif(Quantity > 0, LineTotal/Quantity, 0)";
B) column.Expression = "LineTotal/ISNULL(Quantity, 1)";
C) column.Expression = "if(Quantity > 0, LineTotal/Quantity, 0)";
D) column.Expression = "LineTotal/Quantity";

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

3. You are implementing an ASP.NET application that makes extensive use of JavaScript libraries. Not all pages use all scripts, and some scripts depend on other scripts. When these libraries load sequentially, some of your pages load too slowly. You need to use the ASP.NET Ajax Library Script Loader to load these scripts in parallel. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) In your site's master page, add a call to Sys.loader.defineScripts to define each of the scripts that are used in the site.
B) In your site's master page, add a call to Sys.loader.registerScript to define each of the scripts that are used in the site.
C) In each page that uses scripts, add a call to Sys.get for each script that is needed in that page.
D) In each page that uses scripts, add a call to Sys.require for each script that is needed in that page.

4. You are planning a deployment process for a set of interrelated Web services.
You need to ensure maximum availability of the Web services in the event of a hardware or software
failure.
Which approach should you recommend?

A) Run each distinct service on two virtual machines (VMs) hosted on one physical machine.
B) Run each distinct service on a separate physical machine.
C) Run each distinct service on two separate physical machines.
D) Run each distinct service on a separate virtual machine (VM).

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

Solutions: