If you want to rotate an object using Core Animation, in radians, in the z axis, which of the following key paths of a layer’s CATransform3D matrix will you use?

Which VOIP protocols manages the searching of a user's call history?

Which type of queues is provided and managed by Grand Central Dispatch (GCD), using which, an app can submit tasks, in the form of block objects?

Which classes in the CallKit framework declares a programmatic interface for objects that represent a telephony action?

In Sirikit, which protocol is used to get the current status of a car's locks?

In iOS1O CodeData, NSPersistentContainer uses a new class to describe the conf‌iguration information to pass to NSPersistentStoreCoordinator. while adding a persistent store. That class is:

Which option is a property of UIActivityIndicatorView object in Xcode 4.x?

As an iOS app tester, which is the advantages of having an ad hoc provisioning profile?

Which framework must be added in an Xcode 4.x project to play audio files?

Which is not an inbuilt received action in a Web View Interface Builder object?

Which profile is automatically created and installed on the iOS device when you add an iOS device in Xcode 4.x for the first time?