Final Graded Quiz :iOS App Capstone (Meta iOS Developer Professional Certificate) Answers 2026

Question 1

When defining variables and constants in Swift, is it recommended to specify the type explicitly?

❌ The compiler cannot infer the correct variable or constant type in all cases.
✅ It is better to let the compiler infer the correct type.
❌ It is not necessary to specify the type explicitly in Swift.

Explanation:
Swift has strong type inference, so explicit typing is usually unnecessary unless clarity is needed.

Question 2

What is true of the following code? (Select all)

✅ It adds 500 to firstValue and assigns the result to firstValue.
✅ It is equal to firstValue = firstValue + 500.
❌ It is replacing the contents of firstValue with 500.

Explanation:
+= is a compound assignment operator.

Question 3

Which of the following is correct for performing operations between two data types?

❌ let result = x + y (Int + Float)
✅ let result = Double(x) + y
❌ let result = x + y (Int + Double)

Explanation:
Swift does not allow implicit type conversion.

Question 4

What will the following code output?

✅ Option 1
❌ Option 2
❌ Option 3

Explanation:

• gameScore += levelScore → 10

• Double accepts Int assignment → 20.0

Question 5

What will the following code output?

❌ 30
✅ 59
❌ THEGAME’SSCOREIS 59
❌ THEGAME’SSCOREIS 30

Explanation:

• "the game's score is ".lowercased().count = 29

• 29 + 30 = 59

Question 6

What will be the value of result?

✅ false
❌ true
❌ 7
❌ 3

Explanation:

• (19 % 6) * 3 = 3 * 3 = 9

• (77 % 10) = 7

• (9 < 5) is false → whole result false

Question 7

Which results will the following code produce? (Select all)

❌ 18
❌ 19
❌ 20
❌ It will be equal to (22 % 10) * 7 + 5

Explanation:
Swift does not support ** operator, so this is a trick question.

Question 8

Which statements are true for a NSSortDescriptor? (Select all)

❌ They can be combined by using a NSCompoundSortDescriptor.
✅ They can treat foreign characters like regular ones.
✅ They can be combined by using an array.

Explanation:
Sorting multiple keys = array of NSSortDescriptor.

Question 9

Which git command shows the current state of the local working directory?

❌ git diff
✅ git status
❌ git pull

Explanation:
git status shows staged, unstaged, and untracked files.

Question 10

True or False: When creating a form, you should space the input fields.

✅ True
❌ False

Explanation:
Spacing improves readability and usability.

Question 11

How does creating a user journey map help UX design?

✅ It uncovers moments of frustration and satisfaction to build empathy.
❌ Used for demographics
❌ Measures success
❌ Step-by-step instructions

Question 12

What is a critical factor in usability and learnability?

❌ Animations
✅ Consistency
❌ Interface controls
❌ Design patterns

Question 13

What is the purpose of predicate in @FetchRequest?

❌ Specifies entity
❌ Specifies sort order
✅ Specifies filtering for fetched results

Question 14

What is the benefit of creating a wireframe?

❌ Test usability
❌ Final design
✅ Defines layout, navigation flow, and interactions
❌ Final branding

Question 15

Why enable git version control for Little Lemon app?

❌ Improve performance
❌ Marketing
✅ Enable collaboration and prevent loss of work

Question 16

What is the purpose of getMenuData?

✅ Fetch menu data when user enters menu screen
❌ Validate input
❌ Post data
❌ Log activity

Question 17

What should be done after initializing persistence constant?

❌ Fetch menu
✅ Set up managedObjectContext environment variable
❌ Call getMenuData
❌ Create models

Question 18

Purpose of sorting and filtering data?

❌ Restrict access
✅ Make menu easier to search and browse
❌ Change visuals

Question 19

Which function should you create?

❌ getSortDescriptors()
❌ sortDishes()
✅ buildSortDescriptors()
❌ createSortDescriptors()

Question 20

Purpose of buildPredicate?

✅ Return an NSPredicate to filter fetched objects
❌ Sort fetched objects
❌ Delete objects
❌ Update objects

Question 21

What elements are used to filter the menu list?

❌ SegmentedControl
✅ TextField above FetchedObjects
❌ Switch
❌ Button

Question 22

Difference between synchronous & asynchronous loading?

✅ Sync blocks UI; async loads in background
❌ Both async
❌ Both reversed

Question 23

What is a flowchart?

✅ Shows steps of a process like ordering food
❌ Ordering feature
❌ Nutrition info
❌ Menu list

Question 24

Purpose of Codable?

❌ Define data types
❌ Declare properties
❌ Specify initializers
✅ Encode and decode JSON

Question 25

Why create relationships in Core Data?

❌ Add properties
❌ Easier querying
✅ Link related entities
❌ Duplicate entities

Question 26

How is Core Data different from DBMS?

❌ Simple storage only
❌ Not compatible externally
✅ Deeply tied to UI and object graph
❌ Temporary cache only

Question 27

Purpose of sortDescriptors?

❌ Filter array
✅ Sort array
❌ Reverse order

Question 28

What is NSSortDescriptor?

❌ Protocol
✅ Foundation class that defines sorting rules
❌ Built-in sort method
❌ Optional type

Question 29

UI elements in onboarding flows?

❌ Media only
❌ Visual styles
✅ Labels, buttons, progress bars, tooltips, checklists

Question 30

How does Navigation help onboarding?

❌ For experienced users
✅ Guides users step-by-step through onboarding
❌ For complex apps only

🧾 Summary Table