IOS Architect Interview Questions

You can usually persist data on iOS are:

• UserDefaults - UserDefaults is a great way to save a small amount of data.
• Property List - Property lists are another great way to store our data.
• SQLite - SQLite is a lightweight embedded relational database.
• Keychain - It is used to save highly sensitive and secure data like passwords and secret codes.
• Saving Files - It directly saves all types of files to the file system.
• CoreData - It allows applications to persist data of any form and retrieve it.

There are various design patterns that can be used in iOS.These swift design patterns are Model-View-Controller, MVVM, Builder, Facade, Singleton, Memento, Observer, Strategy, Command, Factory, Composite, Iterator, Mediator, Proxy, MVP, Decorator design, Delegation, Adaptor, and Template.

SBJson framework is the JSON framework that is supported by iOS. It is a lightweight data-interchange format that's easy to read and write for both humans and computers.

iOS supports Apple's Swift language that uses LLVM as its compiler framework.