Take this Premium version of the Abhisam Functional Safety Mock Test. In this version you get unlimited attempts to take the test within a period of 1 year (as compared to just 2 attempts for the free version). The database of questions is also much larger than the one that the free version uses.
This mock test has questions based on concepts of IEC 61508, IEC 61511, ISA S84.
After your order is processed, you will receive instructions via email on enrolling into the Premium version of the test.