Which API is used to write test scripts that help in exercising the application's user interface elements?

Correct Answer: iOS Simulator can be used to test mobile applications Xcode tool that comes along with iOS SDK includes Xcode IDE as well as the iOS Simulator Xcode also includes all required tools and frameworks for building iOS apps However, it is strongly recommended to test the app on the real device before publishing it

Correct Answer: Create them as properties in the header that are retained In the viewDidUnload set the outlets to nil(ie selfoutlet = nil) Finally in dealloc make sure to release the outlet

Correct Answer: Yes the object is retained It creates a timer that calls a selector on the current threads run loop It may not be 100% precise time-wise as it attempts to dequeue the message from the run loop and perform the selector

Correct Answer: A NSArray?s contents can not be modified once it?s been created whereas a NSMutableArray can be modified as needed, ie items can be added/removed from it

Correct Answer: A struct is a special C data type that encapsulates other pieces of data into a single cohesive unit Like an object, but built into C

Correct Answer: An app will be in InActive state if it is running in the foreground but is currently not receiving events An app stays in InActive state only briefly as it transitions to a different state

Correct Answer: Layer objects are data objects which represent visual content Layer objects are used by views to render their content Custom layer objects can also be added to the interface to implement complex animations and other types of sophisticated visual effects

Correct Answer: SVG stands for scalable vector graphics It?s a text based graphic language which draws images using text, lines, dots etc This makes it lightweight and renders faster

Correct Answer: Many times we would like to store information about the user locally in the computer For example let?s say user has half-filled a long form and suddenly the internet connection breaks off So the user would like you to store this information locally and when the internet comes backHe would like to get that information and send it to the server for storage Modern browsers have storage called as ?Local storage? in which you can store this information

Correct Answer: -To store information usually relevant to browsers and search engines -To only store information usually relevant to browsers -To only store information about search engines -To store information about external links