App-Development-with-Swift-Certified-User Practice Exams - App-Development-with-Swift-Certified-User Test Online

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

SectionObjectives
Topic 1: View Building with SwiftUI- Position and/or layout a single SwiftUI View with standard Views and modifiers
- Extract Subviews to simplify the structure of an overlarge View
- Use @State, @Binding, @Environment, and/or Observable to share data between Views
- Create a multi-view app with navigation Stacks, Links, and/or Sheets
- Use List Views to iterate through collections
- Create multiple Views to implement app logic
Topic 2: Xcode Developer Tools- Identify and use the features of the Xcode interface
  • 1. Navigate Xcode
  • 2. Create and modify views with Interface Builder
  • 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
- 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
Topic 3: 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
- Declare and use basic Swift types
  • 1. Demonstrate the use of type casting in both safe and unsafe ways
  • 2. Describe and use data types and operators
  • 3. Demonstrate when to use constants and variables
  • 4. Interpret and use basic types
- Evaluate variable scope and shadowing
- Use functions
  • 1. Create and call a function
  • 2. Implement default parameter values
  • 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 range operators
  • 2. Use Guard
  • 3. Use logical operators
- 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

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Apple App Development with Swift Certified User Exam Sample Questions (Q23-Q28):

NEW QUESTION # 23
You need to create a Watchpoint in Xcode. In which order should you complete the actions? Move all the actions to the answer area and place them in the correct order.

Answer:

Explanation:

Explanation:

This question belongs to Xcode Developer Tools , specifically the objective on using debugging techniques including breakpoints, watchpoints, and logging to resolve errors . A watchpoint monitors a variable or memory location during a debugging session, so you first need the program to stop while being debugged.
That is why the correct order begins with setting a breakpoint and then running the code so execution pauses at a useful point. Apple's debugging guidance describes debugging as something done at runtime using the debugger, and LLDB's watchpoint documentation explains that watchpoints are part of the debugger workflow rather than something you set before the program is stopped.
Once execution is paused, you use the debug area to inspect the current variables. After locating the variable you want to monitor, you right-click the variable and select Watch to create the watchpoint. This sequence is consistent with how Xcode and LLDB expose watchpoint functionality during an active debug session.
LLDB also describes watchpoints as objects you create to stop execution when a watched value changes, which only makes sense after the debugger has access to the running program state.


NEW QUESTION # 24
Which two statements about building an app are true? (Choose 2.)

Answer: A,D


NEW QUESTION # 25
Complete the code that will add the BlueView to the NavigationStack and present the RedView modally.

|Complete the code by typing in the boxes.

Answer:

Explanation:
NavigationLink, .sheet
Explanation:
This question falls under View Building with SwiftUI , specifically the domain covering multi-view apps with navigation stacks, links, and sheets . The first blank must be NavigationLink because SwiftUI uses a navigation link inside a NavigationStack to push or present a destination view as part of the navigation hierarchy. Apple's documentation states that people tap or click a NavigationLink to present a view inside a NavigationStack or NavigationSplitView. That matches the first code section, where tapping " Show Blue View " should navigate to BlueView().
The second blank must be .sheet because the code uses isPresented: $showRedView, which is the standard SwiftUI sheet modifier for modal presentation controlled by a Boolean binding. Apple documents sheet (isPresented:onDismiss:content:) as the modifier to use when you want to present a modal view when a Boolean becomes true. Since the button toggles showRedView, SwiftUI presents RedView() modally as a sheet.
So the completed structure is effectively:
NavigationLink( " Show Blue View " ) {
BlueView()
}
sheet(isPresented: $showRedView) {
RedView()
}
This directly aligns with SwiftUI navigation and modal presentation patterns in the App Development with Swift objective domains.


NEW QUESTION # 26
Refer to this image to complete the code.

Note: You will receive partial credit for each correct answer

Answer:

Explanation:

Explanation:

This question belongs to View Building with SwiftUI , especially the objectives for using List views to iterate through collections and structuring views with standard SwiftUI containers. The screenshot shows two grouped sets of rows: one headed MY FRIENDS and one headed MY PETS . In SwiftUI, the correct container for a scrollable table-style presentation of rows is List, and the correct way to divide that list into labeled groups is Section. Apple documents List as a container that presents data in a single-column row- based layout, and Section as a way to organize list content into grouped areas with headers and optional footers. That is exactly the structure shown in the image. ( developer.apple.com , developer.apple.com ) The ForEach(names, id: \.self) and ForEach(pets, id: \.self) lines are already iterating through the arrays, so each ForEach should be wrapped inside a Section. The section labels such as " My Friends " and " My Pets
" are provided with the header: label. So the intended code structure is:
List {
Section {
ForEach(names, id: \.self) { name in Text(name) }
} header: {
Text( " My Friends " )
}
Section {
ForEach(pets, id: \.self) { pet in Text(pet) }
} header: {
Text( " My Pets " )
}
}
This matches the UI shown in the image and aligns directly with SwiftUI list and section composition patterns in App Development with Swift.


NEW QUESTION # 27
Select the area in Xcode that allows you to display the Preview Canvas.

Answer:

Explanation:

Explanation:
This question belongs to Xcode Developer Tools , specifically the objective domain on identifying and using the features of the Xcode interface . In the screenshot, the correct area is the upper-right corner of the editor toolbar , where Xcode provides the control for editor display options. Apple's documentation explains that to show previews, you can use the editor controls and specifically notes that you can click the Adjust Editor Options button and choose Preview , which displays the preview canvas to the right of the editor.
So, in hotspot terms, the correct selection is the editor options control near the top-right of the code editor
, not the Run button, not the Inspector, and not the Project navigator. This aligns with Apple's preview workflow for SwiftUI in Xcode, where the canvas is shown from the editor display controls. Apple also describes the preview canvas as part of Xcode's interface for quickly visualizing UI changes while editing code.


NEW QUESTION # 28
......

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