Firstly, when i gave the demo test, i was very impressed. I thought that i was giving the actual exam. I paid for the online mock tests on the site and found out that all the tests were equally good. The SAP PP Online Test actually builds up simulated environment making you feel like you are giving full exam of SAP S/4HANA Production Planning and Manufacturing. There are multiple choice questions and you need to complete within the specific time limit. At the end of the exam, you get a result plus attended questions and answers to judge your performance. This is how I gain a grip on subjects like fiori configuration, architecture, security, data flow etc. Best thing ever! Thank you site. I gave C_TS420_1610, got 84%.