Yes, in the SCJP 1.4 and 5.0 exams you will be told the number of correct options out of those given. In the SCJP 1.2 exam (if it is still offered), you will not be told. [ November 30, 2005: Message edited by: Barry Gaunt ]
The *real* exam will tell you how many correct answers a question has. Many mock exams (including ours) say something like "choose all that apply." I can't speak for other mock question writers, but we do that to make the questions harder.
Spot false dilemmas now, ask me how!
(If you're not on the edge, you're taking up too much room.)