Which of the following statements are correct about NSManagedObjectContext?

We have two objects: OBJA and OBJB. OBJB points to another object OBJX. Which of the following test cases are correct related to these 3 pointers?

With respect to the DispatchSource.ProcessEvent event in Grand Central Dispatch (GCD), which of the following options is/are the valid instance method(s)?

Which statement is correct about Apple Pay Buttons?

Which cryptographic algorithm is supported in iOS1O or higher?

What data object can store a timestamp the best?

What data type do you initialize if you want a list of items that can change?

Which code snippets would work for changing the position of a view?

When adding objects to NSMutableDictionary, the key...

When you create a new iOS project from a template, the template automatically makes a controller object for you.