iOS interview questions for 0-3 years experience

Which is better - core data vs sqlite. Core data is wrapper over the sqlite. Pros and Cons of each.

JSON vs XML comparison. Pros and Cons - XSD: XML Schema Definition

SSL - Two way handshake between two devices without any intermediate server

How to reduce battery consumption: https://developer.android.com/topic/performance/power

How to reduce the app size

What are different states of an Application: Foreground, background, active, inactive and suspended

Explain internals of a LinkedList. How to implement LinkedList in Swift

Programming exercise: How to reverse a string, remove duplicates from integer array without using sets, mix array of 0s and 1s rearrange so that zeros come before 1s

TableView Delegates and DataSource

Difference between If, let and GuardLet

Explain different HTTP methods - GET, PUT, POST, PATCH and DELETE and their significance

Difference between Delegate and Notification in iOS

What is Realm database in iOS