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Apple App Development with Swift Certified User Sample Questions:

1. Review the code snippet.

The code snippet does not compile.
Which two actions will fix the errors? (Choose 2.)

A) Change the initial value of totalCost from o to 0.0.
B) Change the type of quantity from int to Double .
C) Change shipping from let to var to make it mutable.
D) Change totalCost from let to var to make it mutable.
E) Chang the type of unitPrice from Double to Int.

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[ " Italy " ] = " Rome "
C) capitalCities[ " Rome " ] = " Italy "
D) capitalCities.updateValue( " Rome " , forKey: " Italy " )
E) capitalCities.append([ " 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 " Pizza " . " Burger " , " Chicken " . " Pasta " . " Salad " are printed.
C) Only menu items including " Burger " . " Chicken " . " Pasta " . " Salad " are printed.
D) Only menu items including " Burger " . " Chicken " . " Pasta " . " SaJad " . " Steak " are printed.

4. Refer to this image to complete the code.

Note: You will receive partial credit for each correct answer

5. Review the code.
Note: You might need to scroll to see the entire block of code.

A breakpoint is set on line 3. When the application is run. it will stop at line 3. You need to debug the code.
Drag each debugging control from the left to the correct instruction on the right. You will receive partial credit for each correct answer

Solutions: