Hi Sneha,
If BP has given those details in the Preparation section then that should be sufficient. In reality if you have thoroughly gone through that PDF, Blue Prism has recommended to attend the certification after having an hands-on experience with the tool for at least 3 months. Don't get anxious after reading this statement since it is also mentioned that it can be given at any time and is just a recommendation. There are several people who I know (including myself) who have attended and cleared the exam prior to much of any hands-on experience. But on the other hand it also matters on how much of BP knowledge you have gathered so far. Also whether you will be able to quickly grasp the question and answer it, since there is time involved and also some questions are diagram based which may not be easily understandable just through the documentation.
In short - the examination is not difficult to crack, but shouldn't be taken lightly too.