In the last article we've seen what your data access strategies are, both for remote data as well as local storage. We've also briefly mentioned the limitations of network connectivity on the phone and what features of the platform help you deal with these. In this part, we turn on Push Notifications and surrounding topics.

A note on the MSDN documentation: all online resources in the MSDN library for the Windows Phone documentation are now the pre-release documents for Windows Phone OS 7.1 ("Mango"). The original documentation for Windows Phone OS 7.0 (which the exam is likely based on) can be downloaded for offline use here (CHM format). Often there's little difference or it is likely that the changes have no effect on the exam; however in some cases this might not be the case or there are options available in "Mango" that are not part of the RTM release, so you should carefully compare the different versions, and if in doubt, base your learning on the 7.0 documentation.

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