I'm self taught and I'm in two minds about this. In one way, these are fundamental questions and, yeah, we should at least know why they're important. However,

I'm self taught and I'm in two minds about this. In one way, these are fundamental questions and, yeah, we should at least know why they're important. However, I can't help feel the binary nature of the questions is a bit like asking a Computer Scientist "Which flag do you set on an Android Intent to make sure an activity only exists at the top of a history stack?" straight off the bat... It favors those who have prepared specifically for the question. In any case, I guess I have a bit of reading to do..