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Apple App-Development-with-Swift-Certified-User Exam Syllabus Topics:

SectionObjectives
Topic 1: Swift Programming Language- Demonstrate proper use of structs, classes
  • 1. Differentiate between structures and classes
  • 2. Define and use properties and methods
  • 3. Define and use property observers
  • 4. Differentiate between various initializers
- Use functions
  • 1. Implement default parameter values
  • 2. Create and call a function
  • 3. Customize internal, external, and anonymous naming of parameters in functions
  • 4. Demonstrate how to use a function's return value
  • 5. Organize and structure code
- Know how and when to apply control flow and loops
  • 1. Use Guard
  • 2. Use range operators
  • 3. Use logical operators
- Evaluate variable scope and shadowing
- Declare and use basic Swift types
  • 1. Describe and use data types and operators
  • 2. Demonstrate when to use constants and variables
  • 3. Demonstrate the use of type casting in both safe and unsafe ways
  • 4. Interpret and use basic types
- Manage data using collection types
  • 1. Arrays
  • 2. Dictionaries
- Demonstrate the use of Optional types
  • 1. Apply Optional binding and Optional chaining (including but not limited to if let, guard let)
  • 2. Demonstrate how to unwrap Optionals safely
Topic 2: Xcode Developer Tools- Use debugging techniques including, but not limited to, breakpoints, watchpoints, and logging to resolve errors
  • 1. Set breakpoints and step through code line by line
- Identify and use the features of the Xcode interface
  • 1. Create and modify views with Interface Builder
  • 2. Navigate Xcode
  • 3. Demonstrate how to access documentation and help
- Demonstrate how to build and run an app
  • 1. on the iOS simulator
  • 2. on the iOS device
Topic 3: View Building with SwiftUI- Position and/or layout a single SwiftUI View with standard Views and modifiers
- Use @State, @Binding, @Environment, and/or Observable to share data between Views
- Create multiple Views to implement app logic
- Use List Views to iterate through collections
- Extract Subviews to simplify the structure of an overlarge View
- Create a multi-view app with navigation Stacks, Links, and/or Sheets

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Apple App Development with Swift Certified User Exam Sample Questions (Q14-Q19):

NEW QUESTION # 14
Which two statements about building an app are true? (Choose 2.)

Answer: A,E


NEW QUESTION # 15
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?

Answer: D

Explanation:
Comprehensive and Detailed Explanation From App Development with Swift domains:
This question belongs to View Building with SwiftUI , specifically the objective on using @State,
@Binding, @Environment, and observable data to share data between views.
The correct answer is @Binding because @Binding creates a two-way connection to a value that is owned by another view. In this scenario, View A owns the state, and View B needs to read and modify that value so the change is reflected back in View A. Apple's SwiftUI documentation describes a binding as a reference to a mutable value that is owned elsewhere, which is exactly the pattern used when a child view needs to update a parent view's state. ( developer.apple.com )
@State is not correct for View B here because @State is used for local state owned by that specific view. If View B used @State, it would manage its own separate copy rather than updating the parent's value.
@Environment is used to access values provided by the system or ancestor views, not for directly returning a specific parent state value in this pattern. @Observable is related to observable model objects and is not the direct property wrapper used in a child view for two-way parent-child state passing. ( developer.apple.com ) So when View A passes a state value into View B and expects updates to flow back, View B should use
@Binding .


NEW QUESTION # 16
Review the code.

When entered into the TextField, which number will display a blue canvas on the SecondView?

Answer: D

Explanation:
This question belongs to View Building with SwiftUI , especially the domain on creating multiple views to implement app logic and sharing values between views. In FirstView, the value typed into the TextField is stored in number, which is a String. When the NavigationLink is tapped, the code passes Int(number) ?? 0 into SecondView. In Swift, converting a string to an integer with Int(...) uses an optional initializer, which means it returns an optional value and will produce nil if the string cannot be converted. The ?? 0 nil- coalescing operator then supplies 0 if conversion fails.
Inside SecondView, the body is:
Color(passedNumber == 3 ? .blue : .red)
This uses the ternary conditional operator. If passedNumber equals 3, the displayed color is blue; otherwise, it is red. Therefore, entering 3 into the TextField causes Int(number) to become 3, which makes the condition passedNumber == 3 true and displays a blue canvas. Any other listed number results in red.
So the correct answer is A. 3 . This matches the SwiftUI pattern of taking user input, converting it to the needed type, passing it into another view, and rendering UI conditionally based on that value.


NEW QUESTION # 17
Review the code snippet.

Move each item from the list on the left to the correct code segment on the right. You may use each item only once.
Note: You will receive partial credit for each correct response.

Answer:

Explanation:

Explanation:

This question belongs to Swift Programming Language , specifically the domain covering structs, properties, methods, and initializers .
A computed property does not store a value directly. Instead, it returns a value calculated from other data.
That is why description is a computed property: it returns a string based on content.
A memberwise initializer is automatically provided by Swift for structs when their stored properties are initialized through parameters. So Document(content: " Greetings! " ) is using the struct's memberwise initializer.
A type property belongs to the type itself rather than to an instance. In Swift, static var docCount = 0 is a type property because it is declared with static.
An instance method is a function that belongs to an instance of the struct or class. The display() method uses the instance's content, so it is an instance method.
A type method is a method declared with static and belongs to the type itself. So static func increment() is a type method because it changes the shared type property docCount.


NEW QUESTION # 18
Select the location to set this app to run on an iPhone 14 in the simulator.

Answer:

Explanation:

Explanation:

This question belongs to Xcode Developer Tools , specifically the domain for building and running an app on the iOS simulator . In Xcode, the place where you choose whether the app runs on a simulator or a connected device is the run destination / scheme destination selector in the toolbar. This control appears near the top center of the Xcode window and displays the current destination, such as a simulator model or device target. To run the app on iPhone 14 , you click that selector and choose iPhone 14 from the available simulator list. Apple's Xcode documentation describes choosing a run destination before building and running the app in Simulator or on a device.
So, for the hotspot, the correct place is the device/simulator dropdown in the top toolbar , not the preview canvas controls, not the project navigator, and not the code editor. That selector determines where the app launches when you press Run.


NEW QUESTION # 19
......

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