Hello @AnasJri ! Welcome to the community and thanks for reaching out !
RH124 is the first recommended course for RHCSA certification path ( along with course RH134).
There is no RH124 certification, there is a PE124 exam which is a preliminary exam ( and not a certificate exam , refer the link PE124 ) which is to test your preparation and feel the Red Hat exam like situation before the actual RHCSA ( EX200 ) exam.
The courses RH124 & RH134 is a very good recommended source for the RHCSA EX200 exam.
For EX200 always refer the official objectives for preparing : EX200
Locate the respective topics and practice till you are confident about them.
Read the instructions carefully and understand the requirements of the question.
Remember not to do any spelling mistakes and the configuration must persist after reboot !
Try to do the labs at the end of every chapter ( that has grading ) independently and see what sort of grading is happening - when the grading is all pass and when it is a fail. Work on those scenarios, troubleshoot the errors yourself , try to read the logs for a configuration or a service issue and use man pages wherever necessary.
You can refer this community for many helpful topics and posts by various learners - one such helpful post is here :
For any particular topic or any lab - if you need any help / clarification or you have any doubt - please feel free to ask in the community - we all will definitely help you !
