Are all the questions presented with four multiple choices and ONLY one correct answer in CISSP exam (CAT)?
Your assumption is mostly correct but there also exists some questions with different type of answers.
I would never use the word "correct" when analyzing the four responses to a statement. Best. Closest. Suitable. Are better words to use as they "program" you to think outside the box. I had one question that had the word All in 3 of the options. All is an absolute word just like correct is. I never read the question. I choose the non-All response and moved on.