1. Explain the Virtual DOM, and a pragmatic overview of how React renders it to the DOM.
2. Compare and contrast incorporating mixins and enforcing modularity in React Components. (extend, createClass and mixins, HOCs)
3. How might React handle or restrict Props to certain types, or require certain Props to exist?
then
4. UI Teach round, mostly questions on pure js concepts, Promise, Clousure, Recursion, CSS position property, call bind apply
