Accolite Angular Interview Questions for 4 years

Shared question set for 4 years of experience, L1 round. Topics and wording follow the supplied notes; these are questions, not official company guidance.

1. Explain Angular architecture (focus on folder structure, not just components/modules).
2. How does bootstrapping work in Angular (role of main.ts), and what has changed with standalone since we do not have a module?
3. What is dependency injection?
4. What are the use cases of an interceptor and are you aware of mocking?
5. How does change detection work?
6. What are Signals and the different types of Signals? How do you use effect?
7. Which RxJS operators have you used?
8. What is the difference between concatMap and mergeMap?
9. What is the difference between pure and impure pipes?
10. Which will execute first: setTimeout or Promise?
11. What is the event loop?
12. What is a closure?
13. What is a prototype and which OOP concept does it represent?
14. What is the difference between let and var?
15. Write a program to reverse a string.
16. Create a reusable component which showcases a use case of input and output.

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