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

1. You are designing an ASP.NET MVC 2 Web application. A page of the Web application will display data retrieved from a Web service.
The Web service performance is unpredictable.
You have the following requirements:
Display a progress indicator while retrieving data.
Display data in the same page from which it is retrieved.
You need to recommend a solution that meets the requirements.
What are two possible solutions you could recommend? (Each answer presents a complete solution. Choose two.)

A) Use the jQuery.ajax() function.
B) Derive the controller from the AsyncController class.
C) In the view, set the Page directive Async attribute to true.
D) Use the Ajax.BeginForm() method.

2. An ASP.NET Web application connects to a Microsoft SQL Server 2008 database. Multiple users access the database. The Web.config file includes a database connection string. The Web application uses Windows authentication and impersonation. Anonymous access is turned off.
You need to recommend an approach for pooling database connections between users.
Which two actions should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Do not explicitly close connections.
B) In the connection string, specify a user name and password.
C) Explicitly close connections.
D) In the connection string, set the Integrated Security parameter to true.

3. You are designing a data validation strategy for an ASP.NET Web application. A page of the Web application includes multiple Panel controls. Each panel contains input controls, validator controls, and a Submit button.
When a user clicks a Submit button, the Web application must validate only the values of the input controls on the panel containing that Submit button.
You need to recommend an approach for validating the values.
What should you recommend?

A) Change each Panel control to an UpdatePanel control. Set a PostBackTrigger for the Submit button on the panel.
B) For each panel, set the ValidationGroup property on the Submit button to a unique value and add a ValidationSummary control with the same value.
C) For each panel, set the ValidationGroup property on all the validator controls and the Submit button to a unique value for the panel.
D) Change each Panel control to an EditorZone control.

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

5. You are designing an ASP.NET Web application for online image editing.
Users can upload images to the Web application and edit those images by using utilities provided by the application. Some utilities are processor intensive and should be offloaded to a Graphics Processing Unit (GPU). Other utilities require the use of proprietary algorithms that must be performed on the server.
You need to design a solution for minimizing bandwidth usage and Web server response times during image processing, while providing a responsive application.
Which two approaches should you recommend? (Each correct answer presents part of the solution. Choose two.)

A) Perform server-side image processing on a dedicated server.
B) Perform client-side image processing by using ASP.NET AJAX.
C) Perform client-side image processing by using Microsoft Silver light.
D) Perform server-side image processing on the Web server

Solutions: