Q.What is the method used to implement Concurrent Queues? A. dispatch_get_global_queue Q. Apart from one main Queue How many types of Concurrent Queues apart from Main Queue? A. 4 Q. What are the priority types for Concurrent Queue? DISPATCH_QUEUE_PRIORITY_HIGH DISPATCH_QUEUE_PRIORITY_DEFAULT DISPATCH_QUEUE_PRIORITY_LOW DISPATCH_QUEUE_PRIORITY_BACKGROUND
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