Angular JS MCQs with answers Page - 15

Here, you will find a collection of MCQ questions on Angular JS. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which RxJS operator is used to transform emitted values?

  • (A) filter
  • (B) map
  • (C) take
  • (D) merge

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Q. Which RxJS operator combines multiple Observables into one by emitting all values?

  • (A) combineLatest
  • (B) merge
  • (C) switchMap
  • (D) concat

A

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Q. Which RxJS operator cancels previous Observable when a new one is emitted?

  • (A) mergeMap
  • (B) concatMap
  • (C) switchMap
  • (D) flatMap

A

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Q. Which RxJS operator limits the number of emissions?

  • (A) take
  • (B) skip
  • (C) debounceTime
  • (D) distinctUntilChanged

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Q. Which decorator is used to inject dependencies in Angular?

  • (A) @Inject
  • (B) @Injectable
  • (C) @Input
  • (D) @Component

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Q. Which routing guard is used to prevent navigation to a route?

  • (A) CanLoad
  • (B) CanActivate
  • (C) Resolve
  • (D) Deactivate

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Q. Which guard checks before unloading a component?

  • (A) CanActivate
  • (B) CanLoad
  • (C) CanDeactivate
  • (D) Resolve

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Q. Which command generates a new guard in Angular CLI?

  • (A) ng generate component
  • (B) ng generate guard
  • (C) ng guard
  • (D) ng add guard

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Q. Which function is used to create route animations?

  • (A) state()
  • (B) trigger()
  • (C) transition()
  • (D) All of the above

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Q. Which Angular package supports internationalization?

  • (A) @angular/common/http
  • (B) @angular/forms
  • (C) @angular/localize
  • (D) @angular/compiler

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