Sample practice exam is very basic

The sample test that is free of cost on the site of is based on the syllabus of the MB-240 certificate exam. It is mentioned there it is very basis but boy! I slogged myself off just to attempt the exam. I was all drained out by the end of it and realized that I have a long way to go before i am sure that i can give the actual Microsoft Dynamics 365 Field Service Functional Consultant certificate exam.