HKSI Paper 1 Question Bank is your go-to source when you want to prepare for your papers. Do not take these tests lightly, as you will have a firm grip on all concepts if you are hoping to ace your test the first time. Question banks are a good resource as any, and you will have an edge by preparing for the exam the right way.
One of the reasons for you to go this route is that practicing all the problems will help you get ready for the real examination. You will have more confidence and will be ready for your paper. One of the resources to check for these is going to support sites that have all the past papers and questions that you can study, and most sites will provide you an option to download these materials so you can study them multiple times.