Beginner-Level Questions
- What is Angular, and how is it different from AngularJS?
2. What are components in Angular?
- How do you create a component in Angular?
4. What is the purpose of @NgModule?
- What are directives in Angular? Explain the types.
- What is two-way data binding? How does it work in Angular?
- What are lifecycle hooks in Angular? Name them.
- How do you handle forms in Angular? Explain template-driven vs. reactive forms.
- What is the difference between ngIf, ngFor, and ngSwitch?
- What is an Angular Service? How does Dependency Injection work?
Intermediate-Level Questions
- What is the difference between a Promise and an Observable?
12. How does Angular handle routing?
- What is lazy loading, and why is it useful?
- How do you make HTTP requests in Angular using HttpClient?
- What are pipes in Angular? How do you create a custom pipe?
- What is ngOnInit()? How is it different from a constructor?
- How do you pass data between components? Explain @Input() and @Output().
18. What is a resolver in Angular routing?
19. What are Route Guards? Name the types.
- What is the difference between ViewChild and ContentChild?
Advanced-Level Questions
- What is state management in Angular? How does NgRx work?
- How do you optimize an Angular application for performance?
23. What is Ahead-of-Time (AOT) compilation?
24. Explain Angular Universal and Server-Side Rendering (SSR).
- What is the purpose of Webpack in an Angular project?
- How do you implement authentication and authorization in Angular?
- What is NgZone, and why is it important?
- How do you handle memory leaks in Angular applications?
- What is a service worker in Angular, and how does it help with PWA?
- How do you unit test an Angular component or service?
Resources to Master Angular
📌 Official Docs → https://angular.io/docs
📌 Angular University → https://lnkd.in/gwFPrHQ9
📌 Academind (YouTube) → https://lnkd.in/g9qTPede
📌 Udemy – Angular Complete Guide → https://lnkd.in/g8r7iHnj
📌 FreeCodeCamp (YouTube) → https://lnkd.in/gdtUwUcK
Practice Verified Codes and Commands
1. Creating a Component in Angular
ng generate component my-component
2. Making HTTP Requests with HttpClient
import { HttpClient } from '@angular/common/http';
constructor(private http: HttpClient) {}
getData() {
return this.http.get('https://api.example.com/data');
}
3. Custom Pipe Example
import { Pipe, PipeTransform } from '@angular/core';
@Pipe({ name: 'customPipe' })
export class CustomPipe implements PipeTransform {
transform(value: string): string {
return value.toUpperCase();
}
}
4. Lazy Loading in Angular Routing
const routes: Routes = [
{ path: 'lazy', loadChildren: () => import('./lazy/lazy.module').then(m => m.LazyModule) }
];
5. Unit Testing with Jasmine
it('should create the app', () => {
const fixture = TestBed.createComponent(AppComponent);
const app = fixture.componentInstance;
expect(app).toBeTruthy();
});
What Undercode Say
Angular is a powerful framework for building dynamic web applications, and mastering it requires both theoretical knowledge and practical experience. The interview questions provided cover a wide range of topics, from basic concepts like components and directives to advanced topics like state management and performance optimization. To excel in Angular, it’s essential to practice coding regularly and build real-world projects.
For Linux and IT enthusiasts, here are some related commands:
– Linux Command to Check Network Connectivity
ping google.com
– Windows Command to Check IP Configuration
ipconfig
– Linux Command to Monitor System Performance
top
– Windows Command to List Running Processes
tasklist
– Linux Command to Search for Files
find / -name "filename"
By combining Angular knowledge with system-level commands, you can become a well-rounded developer capable of handling both front-end and back-end challenges. Keep exploring, practicing, and building to stay ahead in the ever-evolving tech landscape.
For further learning, refer to the official Angular documentation and the resources mentioned above. Happy coding!
References:
Hackers Feeds, Undercode AI
