And people who know the material should be able to answer those questions without any difficulty. What's the problem?

I'm assuming the problem is questions like this:

  Recall the Master Method and its three parameters a,b,d. Which of the following is the best interpretation of b^d, in the context of divide-and-conquer algorithms?

Alternatively, the problem might be questions that ask for the state of an algorithm at some point, when the algorithm can be correctly implemented in different ways and one is expected to recall/go back and check the exact implementation used.

Those kind of questions should be taken out back and put out of their misery, but I don't think there's anything to suggest that adestefan was asking those kinds of questions.

Yeah, look to Bjarne Stroustrup, he gave all of us C++, no questions asked.