Pergunta de entrevista da empresa Link Development

The interview started with very basic iOS questions, like atomic vs non atomic ? it also stressed on how different classes talk to each other and different iOS design patterns like delegates, notifications etc work. I was given a very basic task and the interviewer wanted to see how i will distribute the task across different classes and how they will communicate and with which design pattern will i work What are the different uses for categories ? different methods to store passwords on iOS ? Have i dealt with iTunes connect before for releasing apps? previous projects ? what did i do in them? and some follow up questions on how i did some parts in the project