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Apple App Development with Swift Certified User Sample Questions:

1. Why does the initializer for the following struct need the keyword self?

A) self is always needed when you are setting properties in an initializer.
B) self is used to indicate to the reader that the parameter is being referenced.
C) self is only needed when the property does not have a default value.
D) self is needed to distinguish between the property and the parameter with the same name.

2. Review the code.
var capitalCities = [ " USA " : " Washington D.C. " , " Spain " : " Madrid " , " Peru " : " Lima " ] Which two statements add the capital city of " Italy " to the dictionary? (Choose 2.)

A) capitalCities = capitalCities + [ " Italy " : " Rome " ]
B) capitalCities.updateValue( " Rome " , forKey: " Italy " )
C) capitalCities[ " Rome " ] = " Italy "
D) capitalCities.append([ " Italy " : " Rome " ])
E) capitalCities[ " Italy " ] = " Rome "

3. Review the code snippet and identify what happens when the program is executed.

A) The for loop prints all the menu items in the array.
B) Only menu items including " Burger " . " Chicken " . " Pasta " . " Salad " are printed.
C) Only menu items including " Burger " . " Chicken " . " Pasta " . " SaJad " . " Steak " are printed.
D) Only menu items including " Pizza " . " Burger " , " Chicken " . " Pasta " . " Salad " are printed.

4. Review the code snippet.

What is the output from each print statement?

5. You need to create a Watchpoint in Xcode. In which order should you complete the actions? Move all the actions to the answer area and place them in the correct order.

Solutions: