You are designing a Windows Phone 7 application that uses an MVVM pattern. You need to recommend the layer of the MVVM pattern where the application developer should unit test the client-side logic in the application. What should you recommend?

You are designing an application that must meet the Windows Phone 7 application certification requirements. You need to ensure that the memory usage of the application meets the requirements. What should you recommend?

You are designing a Windows Phone 7 application. You need to recommend a design strategy that will allow the application to be accepted into the Windows Phone 7 Marketplace. What should you recommend?

You are designing a Windows Phone 7 application that includes data entry functionality. The application will require data to be saved when users exit the application. The data must be available in the application regardless of how the application is exited and re-entered. You need to recommend a way to ensure the availability of user data. What should you recommend?

You are designing a Windows Phone 7 application. The application will capture and store the current date and time each time it is run. When a user leaves the application by using the phone’s Start button and navigates back by using the phone’s Back button, the application must load previously stored data. You need to ensure that previously stored date and time information is reloaded when a user navigates back to the application by using the phones Back button. What should you recommend to load the saved state data?

You are debugging a Windows Phone 7 application that contains a breakpoint in the Activated event. You click the Start button of the emulator to load another application and notice that Microsoft Visual Studio is still attached to the emulator process. You need to step into the code of the Activated event. What should you recommend?

You are testing a Windows Phone 7 application for performance. The application includes several graphical animations. The application and animations are sluggish and slow to respond to user input. All animations are handled explicitly in application code and include per-frame callbacks. You need to improve the performance of the animations within the UI. What should you recommend?

You are testing a Windows Phone 7 application for performance. The application occasionally seems sluggish and slow to respond to user input. The application relies heavily on graphics rendering. You suspect that some areas of the UI are relying excessively on software drawing and are therefore negatively impacting system performance. You need to be able to monitor graphics performance to determine if excessive software drawing is taking place. Which property of the Windows.System.Interop.Settings class should be modified to monitor graphics performance?

You are testing a Windows Phone 7 application that uses a large amount of device memory at run time. According to the Windows Phone 7 application certification requirements, the application must not use more than 90 MB of device memory if a devices physical memory is only 256 MB. You need to ensure that the application conforms to the application certification requirements. Which properties of the DeviceExtendedProperties class should be used to test the application? (Each correct answer presents part of the solution. Choose all that apply).

You are testing a Windows Phone 7 application. The application is designed to optimize the frames per second display on both the composite thread and the UI thread. The application testing must validate that this performance metric is achieved. You need to recommend a way to test the application to confirm that the performance metric is met. Which property of the System.Windows.Interop.Settings class should be modified?