What software developer kit includes all the tools needed to create Windows Phone applications?

Which is NOT released WindowsPhone OS system versions?

MainPage.xaml.cs and MainPage.xaml.vb contain the code to handle _____.

Which is part of Window Phone Developer Tools?

Which shoud be considered when developing an app to run on lower-memory devices?

If an app performs an operation that causes the device to appear to be unresponsive for more than three seconds, such as downloading data over a network connection, the app must display a visual progress or busy indicator.

What is XAP?

Which is benefit of using native code?

You cannot run a Windows Phone 8 app on a Windows Phone OS 7.1.

Which is a popular design pattern for building Windows Phone applications?

The Windows Phone Analysis tool can do which of the following?