Apple App-Development-with-Swift-Certified-User인증문제 & App-Development-with-Swift-Certified-User시험대비최신버전문제

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

SectionObjectives
Topic 1: 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. Demonstrate how to access documentation and help
  • 3. Navigate Xcode
- Demonstrate how to build and run an app
  • 1. on the iOS device
  • 2. on the iOS simulator
Topic 2: Swift Programming Language- Know how and when to apply control flow and loops
  • 1. Use logical operators
  • 2. Use range operators
  • 3. Use Guard
- Declare and use basic Swift types
  • 1. Describe and use data types and operators
  • 2. Demonstrate when to use constants and variables
  • 3. Interpret and use basic types
  • 4. Demonstrate the use of type casting in both safe and unsafe ways
- 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
- Manage data using collection types
  • 1. Arrays
  • 2. Dictionaries
- Evaluate variable scope and shadowing
- Use functions
  • 1. Organize and structure code
  • 2. Create and call a function
  • 3. Demonstrate how to use a function's return value
  • 4. Implement default parameter values
  • 5. Customize internal, external, and anonymous naming of parameters in functions
- Demonstrate proper use of structs, classes
  • 1. Define and use properties and methods
  • 2. Differentiate between structures and classes
  • 3. Differentiate between various initializers
  • 4. Define and use property observers
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
- 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
- Create multiple Views to implement app logic

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최신 Apple App Development with Swift App-Development-with-Swift-Certified-User 무료샘플문제 (Q35-Q40):

질문 # 35
Review the code snippet.

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

정답：

설명：
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 .


질문 # 36
Review the code snippet.

What is the value of answer after you run the code?

정답：

설명：
4
Explanation:
This question belongs to Swift Programming Language , specifically the domains covering control flow , loops , and range operators .
The code starts with:
var count = 0
var answer = 0
So both variables begin with the value 0.
In the first loop:
for index in 1...5 {
count = index
}
the closed range 1...5 includes 1, 2, 3, 4, and 5 . During each iteration, count is updated to the current value of index. After the loop finishes, the final value assigned to count is 5 .
Then the second loop runs:
for index in 1.. < count {
answer = index
}
Here, the half-open range 1.. < count means values starting at 1 up to, but not including , count. Since count is 5, this loop runs with index equal to 1, 2, 3, and 4 . Each time through the loop, answer is updated to the current index. After the last iteration, answer becomes 4 .
So the final value of answer is 4 . This question tests understanding of the difference between the closed range operator ... and the half-open range operator .. < , which is a key Swift control-flow concept.


질문 # 37
Which two statements about building an app are true? (Choose 2.)

정답：B,E

설명：
Comprehensive and Detailed Explanation From App Development with Swift domains:
This question belongs to Xcode Developer Tools , especially the objectives about using the Xcode interface, building and running an app, and debugging. A is true because Xcode supports SwiftUI previews in the canvas, allowing you to see a view's interface directly in Xcode without fully launching the entire app in the normal run workflow. Apple's documentation states that Xcode can display a preview of a custom SwiftUI view in the preview canvas and keep it updated as you make code changes.
D is also true because when you run an app from Xcode on a device, Xcode opens a debugging session in the debug area. Apple explicitly documents that after a successful build, Xcode runs the app and opens a debugging session, which means you can view debug information while the app is running on the phone.
The other options are false. B is false because a phone does not have to be physically attached at all times; modern Xcode workflows support device pairing and wireless development after setup. C is false because Generic iOS Device is not an actual simulator run target for launching the app like a specific simulator device. E is false because you do not need a paid Apple Developer Program membership merely to run an app on your own device for development; Apple provides support for development testing on devices with the required setup such as pairing and Developer Mode.


질문 # 38
Complete the code that conforms to the View protocol by selecting the correct option from each drop-down list.
Note: You will receive partial credit for each correct answer.

정답：

설명：

Explanation:

This question belongs to View Building with SwiftUI , especially the domain covering positioning and/or layout a single SwiftUI View with standard Views and modifiers and the foundational structure of a SwiftUI view. In SwiftUI, a custom screen is typically declared as a struct that conforms to the View protocol. Apple's SwiftUI documentation shows the standard pattern:
struct ScreenView: View {
var body: some View {
Text( " Hello " )
}
}
Here, struct is required because SwiftUI views are commonly defined as structures. View is required after the colon because the type must conform to the View protocol. body is the required computed property that returns the content of the view as some View. Apple documents that every conforming View type must provide a body property that describes its content.
So the completed code is:
import SwiftUI
struct ScreenView: View {
var body: some View {
Text( " Hello " )
}
}
This is the canonical SwiftUI view declaration pattern and is one of the most fundamental concepts in App Development with Swift.


질문 # 39
Select the location to set this app to run on an iPhone 14 in the simulator.

정답：

설명：

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.


질문 # 40
......

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