IOS Set 4

A background ✘ An inactive ✘ A foreground ✘ None of these ✔

By setting the base SDK to the current version of Mac and by setting the deployment SDK to an older version ✘ By setting the Deployment SDK to the current version of Mac and by setting the Base SDK to an older version ✘ Both of these ✘ None of these ✔

It checks only at runtime. ✘ It checks only at compile time. ✘ Both of these ✘ None of these ✔

Cell based ✘ View based ✘ Cell based and view based ✘ Table based ✔

Any object created using 'alloc' or 'init' is retained for the lifetime of its current scope. ✘ It is used only if the object is strongly referenced elsewhere. ✘ Both of these ✘ None of these ✔

Any object created using 'alloc' or 'init' is retained for the lifetime of its current scope. ✘ It is used only if the object is strongly referenced elsewhere. ✘ Both of these ✘ None of these ✔

Helper objects take the form of a delegate or a dataSource. ✘ They add functionality to an existing class without having to subclass it. ✘ Both of these ✘ None of these ✔

@property (writeonly) NSString *fullName; ✘ .@property (readonly) NSString *fullName; ✘ Both of these ✘ None of these ✔

@property (readonly;getter=isFinished) BOOL finished; ✘ .@property (readonly, getter=isFinished) BOOL finished; ✘ Both of these ✘ None of these ✔

It starts with @implementation directive and ends with @end. ✘ It starts with @implementation directive and ends with @close. ✘ It starts with @implementation directive and ends with @exit. ✘ It starts with @implementation directive and ends with @quit. ✔