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Microsoft Designing & Developing Web Apps Using MS .NET Frmwk 4 Sample Questions:

1. An ASP.NET Web application hosted on a remote server throws NullReferenceException exceptions that are not handled. The stack trace does not include line numbers. The
Microsoft Visual Studio 2010 remote debugging tools are installed on the remote server.
You need to recommend an approach for identifying the line of code that is causing the exception.
What should you recommend?

A) Deploy the PDB files for the assemblies to the remote server. Inspect the Application event log.
B) In the Web.config file, set the debug value to true. Attach the debugger to the remote worker process.
C) Set the project-level Enable Code Analysis on Build property to true. Inspect the Application event log.
D) Set the project-level Enable optimizations property to false. Attach the debugger to the remote worker process.

2. You are modifying an existing ASP.NET Web application. Each page of the Web application includes a navigation bar and a print button.
You have the following requirements:
You need to recommend an approach that meets the requirements.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) In the header, add a style sheet tag that sets the media attribute to print.
B) Add the PrintingPermission attribute to the code-behind page class.
C) Add an Onclick event handler to the print button to set the Response.ContentType property to style/print.
D) Add an OnClientClick event handler to the print button to call the window.print() function.

3. You are conducting an architectural review of an existing ASP.NET Web application. The Web application uses only full-page postbacks, which degrades its performance. You have the following requirements:
Extend existing controls by using AJAX functionality.
Reduce the size of postbacks without modifying the existing controls. You need to recommend an approach for meeting the requirements. What should you recommend?

A) Create a server control derived from the ExtenderControl class.
B) Create a user control that implements the IAsyncActionlnvoker interface.
C) Create a server control derived from the Substitution class.
D) Create a user control that implements the IExtenderProvider interface.

4. You are designing an ASP.NET MVC 2 Web application.
The Web application must meet the following requirements:
You need to recommend an approach for validating user input.
What should you recommend?

A) Add DataAnnotations attributes to each property in the Customer class. Call the Html.EnableClientValidation() method.
B) Use only strongly typed HTML helpers. Call the Html.ValidationMessageFor() method for each property in the Customer class.
C) Use ASP.NET validation server controls. Call the Html.EnableClientValidation() method.
D) Add DataAnnotations attributes to each property in the Customer class. Associate all rendered elements with a validation group.

5. You are designing an ASP.NET MVC 2 Web application.
The Web application must meet the following requirements:
You need to recommend an approach for validating user input.
What should you recommend?

A) Add DataAnnotations attributes to each property in the Customer class. Call the Html.EnableClientValidation() method.
B) Use only strongly typed HTML helpers. Call the Html.ValidationMessageFor() method for each property in the Customer class.
C) Use ASP.NET validation server controls. Call the Html.EnableClientValidation() method.
D) Add DataAnnotations attributes to each property in the Customer class. Associate all rendered elements with a validation group.

Solutions: