Other Companies (Name Not Shared) Angular Interview Questions for 5+ years

Shared question set for 5+ years of experience, L1/L2 round. Topics and wording follow the supplied notes; these are questions, not official company guidance.

1. Converting a Promise into an Observable.
2. What is the purpose of ng serve vs ng build and how does ng build work internally?
3. What is Webpack and why does Angular need it?
4. What is Micro Frontend architecture?
5. Pure vs impure pipes: differences and use cases.
6. Authentication vs authorization and how authorization is handled on the frontend.
7. How to maintain API logs.
8. If an API call fails, how do you retry / recall the API?
9. What are polyfills and why are they needed?
10. Large form handling: a user fills partial data, closes the tab, and revisits later. How do you save partial form data and what happens when the user opens it in a different browser?
11. What are typed reactive forms?
12. Output-based question (event loop and microtasks): console.log("A"), setTimeout B with 0, Promise.then C, console.log("D").
13. WebSocket handling: if responses increase (200-300+), how do you handle it so the UI does not lag?

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