How do you implement a fallback mechanism when lazy-loaded modules fail to load?

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Angular Interview Questions

  1. [JUNIOR] What is Angular?
  2. [MID] What is dependency injection and how does Angular implement it?
  3. [JUNIOR] What are components in Angular?
  4. [JUNIOR] What is data binding in Angular and what are its types?
  5. [MID] What is the difference between template-driven and reactive forms?
  6. [MID] How are observables different from promises in Angular?
  7. [SENIOR] How does Angular's change detection mechanism work?
  8. [SENIOR] What is the OnPush change detection strategy and how do you apply it effectively?
  9. [JUNIOR] What is two-way data binding in Angular?
  10. [JUNIOR] What are directives in Angular?
  11. [JUNIOR] What is TypeScript, and why is it used in Angular?
  12. [MID] What is lazy loading and how do you implement it in Angular?
  13. [MID] How do you pass data between components in Angular?
  14. [MID] What are route guards and what types are available?
  15. [SENIOR] How would you optimize a large Angular application's bundle size?
  16. [SENIOR] What is the purpose of NgZone and how do you use runOutsideAngular()?
  17. [SENIOR] How do you handle state management in Angular applications?
  18. [JUNIOR] What are templates in Angular?
  19. [JUNIOR] What are lifecycle hooks in Angular?
  20. [JUNIOR] What is a Single Page Application (SPA)?
  21. [JUNIOR] What is a module in Angular and what is the purpose of NgModule?
  22. [JUNIOR] What is a service in Angular and how do you create one?
  23. [MID] How do you make HTTP requests using HttpClient in Angular?
  24. [MID] What are pure and impure pipes and how do they differ?
  25. [MID] What is AOT compilation and what are its advantages over JIT?
  26. [MID] What is view encapsulation in Angular and what modes are available?
  27. [MID] What is the difference between switchMap, mergeMap, concatMap, and exhaustMap operators in RxJS?
  28. [SENIOR] What are tree-shakable providers and how do they optimize bundle size?
  29. [SENIOR] What are standalone components and how do they simplify Angular applications?
  30. [SENIOR] How do you implement Server-Side Rendering (SSR) with Angular Universal?
  31. [SENIOR] Compare Signals and RxJS Observables — when would you use each?
  32. [JUNIOR] What is Angular CLI and what are some common commands?
  33. [JUNIOR] What is string interpolation in Angular?
  34. [JUNIOR] What are decorators in Angular and what are their types?
  35. [JUNIOR] What is the purpose of the @Input() and @Output() decorators?
  36. [MID] How do you create a custom directive in Angular?
  37. [MID] How do you create a custom pipe in Angular?
  38. [MID] What are HTTP interceptors and how are they used?
  39. [MID] How do you implement form validation in Angular?
  40. [MID] What is the MVVM architecture pattern in Angular?
  41. [MID] What is a Resolver in Angular routing and when should it be used?
  42. [MID] What is the difference between ViewChild and ContentChild?
  43. [SENIOR] What is Ivy in Angular and what improvements does it bring?
  44. [SENIOR] What is the difference between providers and viewProviders?
  45. [SENIOR] Explain the dependency injection hierarchy and token resolution in Angular?
  46. [SENIOR] What is the purpose of an InjectionToken and when would you use it?
  47. [SENIOR] How would you debug an "Expression has changed after it was checked" error?
  48. [SENIOR] How do you avoid memory leaks in Angular applications?
  49. [SENIOR] How would you deploy an Angular application? What are the alternatives?
  50. [EXPERT] How does Zone.js monkey-patch async APIs and what are the edge cases?
  51. [EXPERT] What are the differences between zone-full and zone-less change detection setups?
  52. [JUNIOR] What is the difference between Angular and AngularJS?
  53. [JUNIOR] What are pipes in Angular?
  54. [JUNIOR] What is the difference between structural and attribute directives?
  55. [JUNIOR] What is the purpose of ngIf, ngFor, and ngClass directives?
  56. [JUNIOR] What is the async pipe and how does it work?
  57. [MID] What is the difference between providedIn root and providing a service in a specific module?
  58. [MID] How do you pass parameters in Angular routes?
  59. [MID] What is the role of the trackBy function in ngFor?
  60. [MID] What is the difference between feature modules and shared modules?
  61. [MID] How do you handle errors in observables?
  62. [MID] How do you dynamically create components in Angular?
  63. [SENIOR] What are resolution modifiers (Optional, Self, SkipSelf) and how are they used?
  64. [SENIOR] How do you design a scalable Angular application architecture?
  65. [SENIOR] How would you break down a monolithic Angular app into feature modules?
  66. [SENIOR] How do you implement custom preloading strategies for routing?
  67. [SENIOR] What is Angular's Renderer2 and why is direct DOM access discouraged?
  68. [SENIOR] How would you implement error handling strategies in RxJS streams?
  69. [SENIOR] How do you implement internationalization (i18n) in Angular?
  70. [EXPERT] Explain hydration in Angular and how partial rehydration improves SSR performance?
  71. [EXPERT] How does the Angular DI lifecycle differ across lazy-loaded and eagerly-loaded modules?
  72. [EXPERT] What is the purpose of the Signal API and how do Signal effects work?
  73. [EXPERT] How do Signals avoid the glitch problem that affects RxJS combineLatest streams?
  74. [JUNIOR] How do you handle events in Angular templates?
  75. [JUNIOR] What is an Angular router and how does routing work?
  76. [JUNIOR] What is content projection and how does ng-content work?
  77. [MID] What is Angular Material?
  78. [MID] Explain the Angular bootstrapping process and what happens internally?
  79. [MID] How do you create custom validators in Angular?
  80. [MID] What is the difference between ActivatedRoute.snapshot and ActivatedRoute observables?
  81. [SENIOR] How do you test components that depend on HttpClient or routing modules?
  82. [SENIOR] How would you architect shared state using services or NgRx?
  83. [SENIOR] What is RouteReuseStrategy and when is it useful?
  84. [SENIOR] What are auxiliary routes and named outlets in Angular?
  85. [SENIOR] How do you manage environment-specific configurations in Angular?
  86. [EXPERT] How does standalone component architecture simplify Angular dependency graphs?
  87. [EXPERT] What common RxJS pitfalls can cripple Angular scalability?
  88. [EXPERT] How would you plan a migration from RxJS-based patterns to Signals?
  89. [JUNIOR] What is the difference between ngOnInit and the constructor?
  90. [JUNIOR] What is the purpose of ng-container in Angular?
  91. [MID] What is the difference between path parameters and query parameters in Angular routing?
  92. [MID] What is the purpose of Angular animations?
  93. [MID] What is pathMatch full and why is it important in route configuration?
  94. [MID] How do you subscribe to and unsubscribe from observables to prevent memory leaks?
  95. [SENIOR] How does the inject() function improve dependency injection compared to constructor-based DI?
  96. [SENIOR] Compare combineLatest, withLatestFrom, and forkJoin in RxJS?
  97. [SENIOR] How do you implement scroll position restoration and anchor scrolling in Angular routing?
  98. [SENIOR] How do you set up end-to-end testing for an Angular application?
  99. [EXPERT] How do you leverage the build optimizer, budgets, and source-map-analyzer to reduce bundle sizes?
  100. [EXPERT] How do you implement micro-frontend architecture with Angular?
  101. [EXPERT] How does the Angular compiler transform templates into executable code?
  102. [SENIOR] How do you handle security and prevent XSS and CSRF attacks in Angular?
  103. [SENIOR] How would you implement real-time features in Angular using WebSockets?
  104. [EXPERT] What are Angular Elements and how do they enable framework-agnostic web components?
  105. [EXPERT] How do you implement CI/CD pipelines for Angular applications with SSR?
  106. [EXPERT] How do you implement a fallback mechanism when lazy-loaded modules fail to load?