I had gone through a interview process. They fired some questions below which I don't know answers and couldn't find in google. The questions are below.

  1. How to create a object and why we need to create objects ?
  2. What is use of EAV database structure ?
  3. Why the plugin is used ?
  4. What is the use of requireJS ?
  5. Why magento uses knockout JS ?
  6. What the generated/code folder containers ?
  7. What means interceptors ?
  8. Why we use reindex command ?
  9. Why Js and css are compiled and saved in PUB folder what is the use of it ?
  10. When We should use public,protected and private functions?

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