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Apple App Development with Swift Certified User Sample Questions:

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

2. Given the function, which two function calls are valid? (Choose 2.)

A) let sun = rightSum(numl: 100, num2: 50)
B) let sum r\ ght5um(100, by: 50)
C) let Sun - rightSum(numl: 100, by: SO, and: SO)
D) let sum - rightSum(100, by: 30, and: 20)
E) let sum = rightSum(100, num2: SO, and: 20)

3. You have created a view which includes some formatted text:

You decide to extract this formatted text into a subview so that you can reuse the formatting for other texts.
You highlight the Text and choose Extract subview.
You refactor ExtractedView to BigGreenTextView.
You add the line let text: String to the extracted view above the body.
You replace " That ' s all folks " with a reference to text
How should you call this extracted View from the original View?

A) BigGreenTextView(text)
B) BigGreenTextView( " That ' s all folks " )
C) BigGreenTextView(text: text)
D) BigGreenTextView(text: " That ' s all folks " )

4. Refer to this image to complete the code.

Note: You will receive partial credit for each correct answer

5. 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) @Environment
C) @State
D) @Binding

Solutions: