CHAPTER 12 EXERCISE SOLUTIONS
Answer to Question 1
The method is URLForUbiquityContainerldentifier:.
Answer to Question 2
The advantage is that all the files stored in the Documents folder are exposed in the Settings 
iCloud Storage & Backup Manage Storage page. You can manage the files directly using this page.
Answer to Question 3
Storing key-value data on iCloud ensures that application-specific data can be accessed by the application running on different devices. This enables users to enjoy a consistent, synchronized experience no matter where they access your application.
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