1. Foundations. How are your foundations? Given an array of promises, could you run them serially (instead of running them in parallel like Promise.all).

2. Do you have experience working with technologies that are trending? If not, start a side project using them.

3. How's your speed? Given the assets, could you build this in an hour? (this was an actual hands on interview problem) https://www.google.com/logos/2011/worldsfair11-hp.html?hl=en

During the day our students do practice problems that drill these concepts.