Exam boards don't give questions out, I think usually teachers will prepare their own questions that they may or may not choose to give to students.
If they do give a list of questions, they will also give surprise questions not on the sheet (my teacher just asked follow up questions from my previous answers). You can prepare if you have been given the questions, but it's important that your answers don't sound memorised, there is a whole section on the mark scheme for spontaneity, so don't sound like a robot, and don't sound like you've memorised them.
When I did my speaking exams, the teachers made a question sheet for each theme that they gave to us, they asked us questions that were worded similarly/asked the same question, and also gave questions that were personal to my answers. If they ask every student the same questions, they flag it up, so it will be different. It just depends on the teacher.
If you are to prepare questions, but aren't given a list of questions by your teacher, I suggest just thinking of questions that you could be asked from each topic (e.g. what is your neighbourhood like?) and prepare answers very broadly, and just practice vocab/grammar