What is the return value of SecRandomCopyBytes function of
SecRandom class in iPhone OS 4.0 if the function completes
successfully?

Which reason will return a value of NO for the instance method startVideoCapture of class UIImagePickerController?

Which statement regarding Objective-C are correct?

Which need to be modified while localizing an application?

Which symbol is used as a syntactic marker for blocks of code in iPhone OS 4.0?

What will you get from the default database? NSUserDefaults *defs = [NSUserDefaults standardUserDefaults]; NSArray *languages = [defs objectForKey:@'AppleLanguages']; NSString *preferredLang = [languages objectAtIndex:0];

What is the use of performSelector in iOS?

What gets returned if XIB is not properly connected to a parent controller?

What does the 'strong' property attribute do?

What is true about ARC and manual memory management?

Which allows it to determine if an application is running on iPhone, or if it's running on an iPod Touch?