Can you give me any idea that which study aboard exam shud i give such that it would act as backup plan if i aint able to make up to iit?

I hav complted my 10 std this year & now preparing for JEE mains.I wanna go to prestigious engg institute.If i nt able to make up there then i wanna try my luck aboard.Pls suggest me some study aboard exams that will help me in future &i start preparing for it now.I also wanna do MBA abrod aftr engg