I have cleared the ISTQB Foundation exam.
All you need to do is prepare for the exam of the prescribed ISTQB Foundation book. ()
This is THE book for the exam. It Contains 6 chapters. Won’t take much time as the testers will be familiar with the concepts. Take a week or 2 to brush up the concepts.
Then complete as many number of sample questions in. You have 1000+ questions to answer.
My recommendations is to prepare atleast for 1 month before taking the exam. No dumps are needed. Just use the above mentioned resources.