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Apple App-Development-with-Swift-Certified-User Exam Syllabus Topics:

Apple App Development with Swift Certified User Sample Questions:

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

2. Review the code.

When entered into the TextField, which number will display a blue canvas on the SecondView?

A) 1
B) 3
C) 2
D) 4

3. Complete the code that conforms to the View protocol by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct answer.

4. What is the code snippet an example of?

A) Optional chaining
B) Optional binding
C) Force unwrapping
D) Implicitly unwrapped optional

5. Select the area in Xcode that allows you to display the Preview Canvas.

Solutions: