Angular Typescript Interview Question Answers Part 5
Angular Interview Questions – Part 5 (Architect & Production)
81. How do you structure a large Angular application?
Answer: Use feature-based architecture, not type-based.
Best practices:
- Feature folders
- Shared core modules
- Lazy-loaded features
- Clear separation of UI & business logic
82. What is Core Module in Angular?
Answer: Core module contains singleton services used across the app.
Examples:
- Auth service
- Logger service
- Interceptors
Rule: Import CoreModule only once.
83. What is Shared Module?
Answer: Shared module holds reusable:
- Components
- Pipes
- Directives
Imported by: Multiple feature modules.
84. How do you handle Global Error Handling in Angular?
Answer:
By using ErrorHandler.
Used for:
- Logging errors
- Showing fallback UI
- Reporting to monitoring tools
85. What is Centralized Logging?
Answer: Sending application logs to a single system.
Tools:
- Sentry
- LogRocket
- Datadog
Benefit: Easy debugging in production.
86. How do you handle API Errors in Angular?
Answer:
- HTTP Interceptors
- Global error handling
- Retry mechanisms
- User-friendly messages
87. What is Retry Strategy in RxJS?
Answer: Automatically retries failed API calls.
Used when: Temporary network issues.
Example use case: Retry payment status fetch.
88. How do you secure Angular Applications?
Answer:
- Route guards
- JWT tokens
- HTTPS
- Avoid storing secrets in frontend
- Use CSP headers
89. How do you handle Authentication & Authorization?
Answer:
- Auth service
- Route guards
- Token-based authentication
- Role-based access control
90. What is CI/CD for Angular?
Answer: CI/CD automates:
- Build
- Test
- Deploy
Pipeline steps:
- Lint
- Test
- Build
- Deploy
91. How do you deploy Angular applications?
Answer: Common platforms:
- AWS S3 + CloudFront
- Netlify
- Firebase Hosting
- Azure Static Web Apps
92. What is Environment Configuration in Angular?
Answer: Angular supports multiple environments:
- dev
- test
- prod
Used for:
- API URLs
- Feature flags
93. How do you manage Feature Flags?
Answer: Enable or disable features without redeploying.
Use cases:
- Gradual rollout
- A/B testing
94. What is Accessibility (a11y) in Angular?
Answer: Making apps usable for everyone, including users with disabilities.
Techniques:
- ARIA labels
- Keyboard navigation
- Screen reader support
95. How do you optimize Angular bundle size?
Answer:
- Lazy loading
- Tree shaking
- Remove unused dependencies
- Use modern build options
96. How do you handle Browser Compatibility?
Answer:
- Polyfills
- Modern Angular builds
- Testing across browsers
97. How do you handle Version Upgrades in Angular?
Answer:
- Follow Angular update guide
- Update one major version at a time
- Run tests after each upgrade
98. What are Angular Anti-Patterns?
Answer:
- Fat components
- Subscribing without unsubscribe
- Too many global services
- Heavy logic in templates
99. Real Architect-Level Question
Question: How do you future-proof an Angular application?
Answer:
- Modular design
- Clear boundaries
- Strong testing
- Follow Angular roadmap
- Avoid overengineering
100. Final Boss Interview Question 💀
Question: Why should a company choose Angular over other frameworks?
Answer:
- Enterprise-ready
- Strong typing with TypeScript
- Opinionated architecture
- Long-term support
- Excellent tooling