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Apple App Development with Swift Certified User Sample Questions:

1. Which code correctly creates a size 300 rectangular Image View with rounded corners that displays the entire image, regardless of size?

A)

B)

C)

D)

2. What is the code snippet an example of?

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

3. Complete the code that will add the BlueView to the NavigationStack and present the RedView modally.

|Complete the code by typing in the boxes.

4. Review the code snippet.

Which statement completes the code snippet so that:
* The lastReleaseDate remains the same when nextApplePhone.releaseDate is nil.
* The lastReleaseDate updates to the nextApplePhone.releaseDate when nextApplePhone.releaseDate is NOT nil.

A) nextApplePhone.releaseDate : lastReleaseDate
B) nextApplePhone.releaseDate! : lastReleaseDate
C) lastReleaseDate : nextApplcPhone.rcleaseDate!
D) lastReleaseDate : nextApplePhone.releaseDate

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

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

Solutions: