Memory management is one of the most important processes in any programming language. It is the process by which the memory of objects are allocated when they are required and deallocated when they are no longer required. Objective-C Memory management techniques can be broadly classified into two types: "Manual Retain-Release" or MRR and "Automatic Reference Counting" or ARC. Which of the following is NOT correct regarding memory management in Objective-C ?

Which one contains an INCORRECT concept regarding Objective-C programming ?

The (...) is an Objective-C directive, which is also used to define the aliases for various data types similar to (...). But (...) is limited to giving symbolic names to types only, whereas (...) can be used to define alias for values as well, like you can define 1 as ONE, etc.

In Objective-C, sometime, you may find that you wish to extend an existing class by adding behavior that is useful only in certain situations. In order to add such extension to existing classes, Objective-C provides ...

Which one contain an INCORRECT way to declare and initialize an array ?

Most proper answer to load plist file contents into an array?

What can you say about the code: NSString * str = [NSString stringWithFormat:@""]; [str release];

What happens at runtime with the following: dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); dispatch_apply(10, queue, ^(size_t index) { NSLog(@"%zu", index); });

What class method is used to make an NSArray from NSData class?

What do you use for an outgoing TCP connection?

Which method, if defined, is guaranteed to be called once -- and only once -- when a class is first referenced?