Week 2: Real-World Mobile App Architecture

Front

What is the main purpose of app architecture?

A. To make the app faster
B. To organize code so it can grow safely
C. To reduce syntax errors
D. To improve UI design

Back

B. To organize code so it can grow safely

Front

2. Why do beginner mobile apps usually fail to scale?

A. Too many developers
B. Too many features
C. Poor organization and mixed responsibilities
D. Weak internet connection

Back

C. Poor organization and mixed responsibilities

Front

3. Which folder structure is more suitable for real-world projects?

A. Screen-based
B. Component-only
C. Feature-based
D. File-type-based

Back

C. Feature-based

Front

4. In separation of concerns, what should UI files focus on?

A. API calls
B. Business logic
C. Displaying data and user interaction
D. Database queries

Back

C. Displaying data and user interaction

Front

5. Where should API calls ideally be placed?

A. Inside screen components
B. Inside UI components
C. Inside service files
D. Inside App.js

Back

C. Inside service files

Front

6. Which of the following best describes “separation of concerns”?

A. Separating screens into folders
B. Each file handling one responsibility
C. Using many libraries
D. Avoiding shared data

Back

B. Each file handling one responsibility

Front

7. What is global state?

A. State used only in one screen
B. Temporary UI data
C. Data shared across many parts of the app
D. A backend database

Back

C. Data shared across many parts of the app

Front

8. Which of the following is a good example of global state?

A. Text input value
B. Button press state
C. Logged-in user information
D. Modal open state

Back

C. Logged-in user information

Front

9. Why should not all data be made global?

A. It slows down the app
B. It increases app size
C. It adds unnecessary complexity and risk
D. It breaks React Native

Back

C. It adds unnecessary complexity and risk

Front

10. How do real-world developers decide app architecture?

A. By copying tutorials
B. By choosing the newest tools
C. By thinking about future changes and team safety
D. By minimizing folders

Back

C. By thinking about future changes and team safety