App-Development-with-Swift-Certified-User対応問題集、App-Development-with-Swift-Certified-User試験過去問

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

SectionObjectives
Topic 1: Xcode Developer Tools- Demonstrate how to build and run an app
  • 1. on the iOS device
  • 2. on the iOS simulator
- 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
- 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 2: View Building with SwiftUI- Use @State, @Binding, @Environment, and/or Observable to share data between Views
- Use List Views to iterate through collections
- Create a multi-view app with navigation Stacks, Links, and/or Sheets
- Position and/or layout a single SwiftUI View with standard Views and modifiers
- Extract Subviews to simplify the structure of an overlarge View
- Create multiple Views to implement app logic
Topic 3: Swift Programming Language- Evaluate variable scope and shadowing
- 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
- 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. Interpret and use basic types
  • 4. Demonstrate when to use constants and variables
- Use functions
  • 1. Organize and structure code
  • 2. Demonstrate how to use a function's return value
  • 3. Create and call a function
  • 4. Customize internal, external, and anonymous naming of parameters in functions
  • 5. Implement default parameter values
- Know how and when to apply control flow and loops
  • 1. Use Guard
  • 2. Use logical operators
  • 3. Use range operators
- Demonstrate proper use of structs, classes
  • 1. Differentiate between structures and classes
  • 2. Define and use property observers
  • 3. Define and use properties and methods
  • 4. Differentiate between various initializers
- Manage data using collection types
  • 1. Dictionaries
  • 2. Arrays

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Apple App Development with Swift Certified User Exam 認定 App-Development-with-Swift-Certified-User 試験問題 (Q14-Q19):

質問 # 14
Review the code snippet and identify what happens when the program is executed.

正解：B

解説：
This question belongs to Swift Programming Language , specifically the objectives covering arrays , loops
, and range operators . The array has 6 elements, so menuItems.count is 6. The loop uses the half-open range operator:
for index in 1.. < (menuItems.count - 1)
That becomes:
for index in 1.. < 5
In Swift, the half-open range operator a.. < b includes the lower bound but does not include the upper bound.
So this loop runs with index values 1, 2, 3, 4, not 0 and not 5.
Array subscripting uses those indexes to print:
* menuItems[1] # " Burger "
* menuItems[2] # " Chicken "
* menuItems[3] # " Pasta "
* menuItems[4] # " Salad "
That means " Pizza " at index 0 is skipped, and " Steak " at index 5 is also skipped. Swift arrays use zero- based indexing, and count returns the number of elements in the array.
Therefore, the program prints only " Burger " , " Chicken " , " Pasta " , and " Salad " , so the correct answer is A .


質問 # 15
Review the code.
var capitalCities = [ " USA " : " Washington D.C. " , " Spain " : " Madrid " , " Peru " : " Lima " ] Which two statements add the capital city of " Italy " to the dictionary? (Choose 2.)

正解：A、D


質問 # 16
Select the area in Xcode that allows you to display the Preview Canvas.

正解：

解説：

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.


質問 # 17
Review the code snippet.

What will print after the final line of code is executed?

正解：

解説：
Answer the question by typing in the box.
2
Explanation:
This question belongs to Swift Programming Language , specifically the objective on variable scope and shadowing .
The code first declares:
let even = 2
This creates a constant named even in the outer scope with the value 2.
Inside the for loop, the code declares another constant with the same name:
let even = num * 2
This inner even exists only inside the loop body. It shadows the outer even, which means that within the loop, the name even refers to the loop's local constant, not the original one. However, that inner constant goes out of scope at the end of each loop iteration.
After the loop finishes, the inner even no longer exists. So when the final line runs:
print(even)
Swift uses the original outer constant, which is still 2.
So the output is:
2
This question tests two important Swift concepts:
* Scope : where a variable or constant can be accessed
* Shadowing : when a local declaration temporarily hides another declaration with the same name Therefore, the correct answer is 2 .


質問 # 18
Complete the code that will add the BlueView to the NavigationStack and present the RedView modally.

|Complete the code by typing in the boxes.

正解：

解説：
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.


質問 # 19
......

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