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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 snippet.

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

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

2. If View A calls View B, which Swift Property Wrapper would you use in View B in order to return the value of a state to View A?

A) @Observable
B) @State
C) @Binding
D) @Environment

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

4. When you press ' Show Button ' on your app. a modal View appears.
Complete the code by selecting the correct option from each drop-down list.
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: