if you have studied all the above things i have mentioned i think you need not worry about the type of questions .Also revealing the type of questions/questions which come across in the exam is a direct breach of the terms and conditions of the HCA ,if they get to know that you revealed some questions it could lead to Cancellation of your certification,Sorry for the long comment
Thanks again. Did not know the fact that discussion on sample questions can lead to cancellation of the certification. Thanks for providing the information.
Will follow the tutorials in Hortonworks site and the topics provided in the blog.