During the exam, is there a clear indication on how much answers is required to be given in multiple-answer questions?
SCJP FAQ states that:
Will I be told how many options to choose in a multiple choice question?
Yes in the real exam you'll be told how many options to select. The real exam won't have questions like in most mock exams which say "Choose All That Apply". That is done in mock exams to make them difficult.
Is that assumption still correct for the OCAJP exam?