iOS Interview Questions and Answers
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Ques 11. What are the methods to achieve concurrency in iOS?
The methods to achieve concurrency are:
- Dispatch queues
- Threads
- Operation Queues
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Ques 12. Define Cocoa/Cocoa touch.
It is used for building software codes to run on iOS for the iPad and iPhone. Cocoa Touch is written in the objective-C language and has a different set of graphical control elements to Cocoa.
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Ques 13. Explain the object.
Objects are mainly the variables that are of class types. It can be a function, method, data structure, or variable.
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Ques 14. Which framework is used to construct the application’s user interface?
UIKIT framework. It renders drawing models, windows, event handling, and views.
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Ques 15. What is iBeacon?
iBeacon enables mobile apps to listen to signals from beacons in the physical world and respond accordingly. It comprises two parts: a broadcaster and a receiver.
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