Angular Interview Questions For 5 Years Of Experience

 

  1. What are custom directives in Angular and how to create them ?
  2. What are the security features in angular ?
  3. What is storybook in Angular ?
  4. What are the design patterns in Angular ?
  5. What are interceptors in Angular ?
  6. How to create a custom decorator in Angular ?
  7. How to make multiple http calls in parallel in Angular ?
  8. What is a module in TypeScript, and how can you use it ?
  9. How to hit an API before the loading of the appComponent ?
  10. If there is a package(or say library) that is not available through NPM , then how would you use it in your angular application ?
  11. How to optimize Angular application using OnPush change detection strategy ?
  12. What are the types of forms available in Angular ? Explain with syntax.
  13. How to improve Angular app performance ?
  14. What is AuthGuard in Angular ?
  15. Explain switch map , mergemap , forkjoin, combineLatest, concatMap, exhaustMap . what would happen if any of the requests fails in switch map , merge map or forkjoin ?
  16. What is dependency injection ?
  17. How do you handle errors in RxJS observables ?
  18. How do you implement backpressure in RxJS ?
  19. Can you explain what is the purpose of using schedulers in RxJS, and give an example of a common scheduler ?
  20. What is the difference between a pipeable operator and a patch operator in RxJS ?
  21. What is the difference between AOT and JIT ?
  22. How do you use the retry() operator in RxJS, and what is its purpose ?
  23. What is Angular change detection and how does it work ?
  24. What is zone js in Angular ?
  25. How to dynamically create form fields with FormArray in Angular ?
  26. What is ngZone in Angular ?
  27. Can event triggered in parent cause change detection in child with OnPush strategy in Angular ?
  28. Can event triggered in child cause change detection in parent with OnPush strategy in Angular ?
  29. How to optimize an Angular application ?
  30. Explain pure and impure pipe in Angular ?
  31. How to test an Angular Service ?
  32. Explain ngAfterContentInit hooks ?
  33. Explain ngAfterViewInit hook with example ?
  34. Difference between ngAfterContentInit and ngAfterViewInit ?
  35. What is View Encapsulation in Angular ?
  36. What is the use of polyfills ?
  37. What is scan operator in RxJS ?
  38. How does spyOn work in Angular ?
  39. How to mock http request in Angular ?
  40. What is reduce operator in RxJS ?
  41. What is the use of trackBy in Angular ?

    Note:- You are expected to know


    Source:- Angular Interview Questions For 5 Years Of Experience

    For more questions and answers visit our website at Frontend Interview Questions

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