Angular Js Interview Questions - Part 1

1. What are the differences between AngularJS (angular 1.x) and Angular (Angular 2.x and beyond)?
2. What is a component? Why would you use it?
3. What is the minimum definition of a component?
4. What is a module, and what does it contain?
5. What is a service, and when will you use it?
6. What is a promise? Explain it laymen's terms.
7. What are the life cycle hooks for components and directives?
8. What are pipes? Give me an example.
9. What are the differences between reactive forms and template driven forms?
10. What is a dumb, or presentation, component? What are the benefits of using dumb components?
11. How do components communicate with each other?
12. How would you use http to load data from server?
13. How do you create routes?
14. How can you get the current state of a route?
15. How do you create two-way data binding?
16. How do you load external modules?
17. How would you display form validation errors?