XIPHIAS Software Technologies iOS Interview Questions

Location : Bengaluru
Date : Feb, 2019

1. Explain Dispatch queue vs Operation queue.
2. Explain Singleton pattern and it's drawback.
3. What is protocol?
4. Delegates and Data source.
5. Why we use Alamofire library?
6. App states.
7. Atomic vs Non-atomic.
8. Explain Retain cycle.
9. Weak or retain attribute.
10. Could you explain clearly about retain attribute? When we will use?
11. Atomic is always guarantees to return a value.Why?