FlexiEle Consulting interview questions

The interview was a bit long around 50 mins, interviewer asked me one simple javascript code to reverse an array in two ways, then gave me some react code snippet and told me to add some code to it, then questions about react hooks, lifecycle methods, especially useEffect, Dom and virtual dom, output of a react code snippet, and more theory questions related to javascript looping methods, then about the reduce method of js. Next round was Manager interview, he asked me about my projects, challenges i faced during making it, time it took to make, error handling, some more react questions like ssr and error handling, then he asked what is redux. Then some general questions like what are you looking for and so on.

Q.1. what are component lifecycle methods? Q.2. what are states and hooks in react?