Angular Front End Interview Questions

S.No Question
1. What is Angular and why is it used?
2. What are the key features of Angular?
3. Explain the difference between AngularJS and Angular.
4. What is TypeScript and why is it used in Angular?
5. What are the advantages of using Angular over other JavaScript frameworks?
6. How does Angular handle data binding?
7. What is the architecture of an Angular application?
8. Explain the role of components, modules, and services in Angular.
9. Describe the flow of data in the Angular architecture.
10. How do you structure an Angular project?
11. Explain the purpose of the main files and folders in an Angular project.
12. What is the significance of the app.module.ts file in Angular?
13. What are components in Angular?
14. How do you create and use components in Angular?
15. Explain the component lifecycle hooks in Angular.
16. What are Angular expressions and how do you use them?
17. Explain the different types of directives in Angular.
18. What is the purpose of ngIf and ngFor directives in Angular?
19. What is data binding in Angular?
20. Explain the different types of data binding in Angular.
21. How do you perform two-way data binding in Angular?
22. What is event binding in Angular?
23. How do you handle events in Angular using event binding?
24. Explain the difference between event binding and property binding in Angular.
25. How do you apply CSS styles to Angular components?
26. Explain the concept of component encapsulation in Angular.
27. What is the difference between ViewEncapsulation.None, ViewEncapsulation.Emulated, and ViewEncapsulation.Native in Angular?
28. What are NgForms in Angular?
29. How do you perform form validation in Angular?
30. Explain the purpose of template-driven forms and reactive forms in Angular.
31. What is a pipe in Angular?
32. How do you use pipes to transform data in Angular?
33. Explain the concept of parameterized pipes in Angular.
34. What is pipe chaining in Angular?
35. How do you chain multiple pipes together in Angular?
36. How do you integrate external templates in Angular?
37. Explain the concept of template URL and inline templates in Angular.
38. What is routing in Angular?
39. How do you configure routing in Angular?
40. Explain the purpose of router outlets and router links in Angular.
41. How do you establish a parent-child relationship between components in Angular?
42. Explain the concept of input and output properties in Angular.
43. How do you pass data from a parent component to a child component in Angular?
44. How do you communicate between sibling components in Angular?
45. Explain the concept of shared services for data communication in Angular.
46. What are Angular event emitters and how do you use them?
47. What is the HttpClient module in Angular?
48. How do you perform HTTP GET, POST, PUT, and DELETE operations in Angular?
49. Explain the concept of observables in Angular HttpClient.
50. What is a service in Angular?
51. How do you create and use services in Angular?
52. Explain the purpose of dependency injection for services in Angular.
53. How do you perform service binding in Angular?
54. Explain the difference between singleton and per-component service instances in Angular.
55. How do you integrate payment gateways in an Angular application?
56. Explain the steps involved in processing payments in Angular.
57. How do you implement social login using Facebook or Google in Angular?
58. Explain the OAuth2 authentication flow in the context of social login.
59. What are the differences between Components and Directives in Angular?
60. What is Angular CLI? How does it simplify the development process?
61. What are Angular decorators? Provide examples of commonly used decorators.
62. How do you perform unit testing in Angular? Explain the testing frameworks and tools.
63. What is lazy loading in Angular? How does it improve application performance?
64. What are Angular guards? How do you implement route guards in Angular?
65. What are Angular animations? How do you apply animations in Angular?
66. How do you handle authentication and authorization in an Angular application?
67. How do you optimize the performance of an Angular application? Share some best practices.
68. What is Angular's HttpClient and how does it handle HTTP requests? Explain the difference between HttpClient and Http.
69. How do you handle route parameters in Angular? Explain the ActivatedRoute and Params objects.
70. What are Angular's template reference variables? How do you use them in templates?
71. What is Angular Material? How do you use Angular Material components in an Angular application?

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