These are pretty good questions. I'd put more value on say understanding HTTP or async/promises and how they work vs knowing the differences between methods. Yo

These are pretty good questions. I'd put more value on say understanding HTTP or async/promises and how they work vs knowing the differences between methods. You can always look those up. One interesting thing with reduce would be "What is a situation where reduce is the best choice?" What I look for is a bridge from the coding question earlier where most people will implement a nested loop situation and could bring down the total iterations over the data set.