I didn't really look at the middle two but the first one is easy and this one is downright trivial if you've taken any sort of database and networks course. If you haven't though, it's impossible to reason about.

These are just recall questions. Why not have something like "why was the sliding window incorporated into TCP?" which would show that people actually had some understanding of what they learned. Similarly, instead of the ACID question, something like "what's the implication of brewers CAP theorem?" would be a better question.