Well, the questions get into other things too.(Character encoding, timing attacks, graph algorithms.) Writing a good single-paragraph description of iterative deepening depth-first search was a challenge!
And then with timing attacks - I mean SQL Injection is a fair web security question to ask someone, but the timing is like, very fringe knowledge. Most devs let their framework handle all of those kinds of things. Not sure why I would need to know this unless I was specifically in the sec world.
The last 3 questions were actually general CS because they went through search trees and shortest paths algos, which are language-agnostic.