Whether you are a candidate or an interviewer you may always find it difficult to lay hands on the best kind of questions for an interview, especially such an important one. iOS interview questions are all technology-based that is very straightforward if you have the basic idea of what you are dealing with. Any amount of preparation is a waste of time if you are not through with the basics. Here is a list of important questions that will refresh your brain to prepare for the iOS interview.
The questions will give you an idea about the pattern and the right way to answer the questions that may be thrown your way during the interview. So, without adieu lets' start with the questions and answers that may come in the iOS interview.
The HTTP Live Streaming tech (HLS) from Apple allows you to send and receive on-demand and live video and audio media on your iPad, iPhone, Apple TV, Mac and PC. HLS uses the very same properties and procedures which drive the web and thus, lets the user make use of content with the help of ordinary content delivery networks and web servers. HLS is exclusively designed for high reliability and it dynamically modifies itself to suit the network conditions. This is done by optimization of playback according to the available connection speed offered by wired or wireless devices.
It is capable of creating contextual reminders and even employ search to find a particular photo or video from the gallery in innovative ways. It does more than ensuring that we are where we need to be at any particular time. Going right from the home screen of the device shows “Siri Suggestions”. This screen is home to all your favourite apps and contacts, restaurants, information about the location and more important news from the web.
For more extensive search, Siri can display capabilities for deeper search and come up with results like videos, sports scores, content from other third-party apps, and more. Simple conversations and calculations can also be done using the handy search tools available on iPad or iPhone. Many inbuilt apps have also been upgraded for improved performance.
The chief functions of a managed object context comprise of the following:
The main advantage of viper architecture is its ability for communication from one entity to another that is made known through protocols. The idea is to isolate the app’s dependencies by balancing the delegation of responsibilities among the entities.
There are three subclasses of NSLayoutAnchor:
We can use MKPointAnnotation directly if we want our own business logic on the annotation.
Our code takes up some space in the iOS. The size of this is sometimes fixed and sometimes it can change according to what the user will enter during the program. Basically, we have two different methods because of this difference: Stack and Heap.
A stack is used and automatically removes itself from memory after work is finished. But in Heap, the user could do it by writing manual code for deleting from memory.
|• A stack is easy to use.||• Compared to Stack, it is quite slow.|
|• It’s kept in RAM on the computer.||• It creates memory problems if not used correctly.|
|• Created variables are automatically deleted when they exit the stack.||• Variables are used with pointers.|
|• It is quite fast compared to Heap.||• It is created at runtime.|
|• Constructed variables can be used without a pointer.|
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