C+11 (ISO Standard) IKM test

I have to take a C++ PROGRAMMING (C++11 ISO STANDARD) from IKM test check. The subjects that will be included are the following: overloading, C++ optimization, C++ types, C++ templates, class access control, inheritance, C++ multi-threading library, C++ basic concepts, Const and Constexpr, C++ class creation & usage, C++ utilities, exception processing, dynamic memory allocation, polymorphism, C++ containers library, pointers and references.

I have to score above the 80th percentile to make it to the next round of interviews. Formally, I am a mathematician but I have been self-studying C++ for about 4 years now but I have never taken a test in C++ that was multiple choice.

Does anyone have any recommendations for studying for this test or has taken it before? My apologies if this question is not suitable for this blog.