These roles are applicable at the domain level (i.e., there is one of each for every domain in a forest): The PDC Emulator (Primary Domain Controller) - This role is the most used of all FSMO roles and has the widest range of functions. The domain controller that holds the PDC Emulator role is crucial in a mixed environment where Windows NT 4.0 BDCs are still present.
iPod touch 7th Generation Release Date. It has been noted that iPod touch 7th generation release date will be in the mid (July-September) 2017. The new iPod touch 7G release is expected to be the biggest iPod launch that apple has ever done.
Major versions of iOS are released annually. The current version, iOS 10, was released on September 13, 2016. It runs on the iPhone 5 and later, iPad (4th generation) and later, iPad Pro, iPad Mini 2 and later, and the 6th-generation iPod Touch. In iOS, there are four abstraction layers: the Core OS, Core Services, Media, and Cocoa Touch layers. iOS 10 dedicates around 1.8GB of the device's flash memory for itself.