Module quiz: Data structures :Programming Fundamentals in Swift (Meta iOS Developer Professional Certificate) Answers 2026

Question 1

Which of the following is optimized for looping over an array?

✅ a for in loop
❌ a repeat while loop
❌ a while loop

Question 2

Which of the following is optimized for looping over a dictionary?

❌ a while loop
✅ a for in loop
❌ a repeat while loop

Question 3

Individual elements of a tuple have index numbers.

✅ True
❌ False

Question 4

Which method would you use to add a value 5 to the end of an array called numbers? (Select all that apply)

✅ numbers += [5]
✅ numbers.append(5)
❌ numbers[5] = 3

Question 5

Individual elements of a tuple can be accessed using a name/label if they were added when it was created.

✅ True
❌ False

Question 6

You can extract all the values from a dictionary using the following syntax:

❌ travelMiles.keys
✅ travelMiles.values

Question 7

Which of the following will remove keys and values from a dictionary? (Select all that apply)

✅ travelMiles[“George”] = nil
✅ travelMiles.deleteValue(forKey:”George”)

Question 8

The following code block terminates code execution:

✅ True
❌ False

Question 9

What is the output of the following code?

❌ The code will produce a compile error.
❌ The array is empty!
✅ The array isn’t empty!

Question 10

How do you access the elements of the following tuple?

✅ Indices.
❌ Labels

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