I studied books prescribed by IIBF alongwith kits for JAIIB provided by Narang’s Bankers Training Institute, Gurugram (Haryana) and have no hesitation in saying that perhaps without NBTI  kits it would have been very difficult for me to clear JAIIB in a single attempt. Considering the quality of material provided by NBTI, I have already placed the order with NBTI for kits for CAIIB for July 2017 examinations and I have no doubt that these kits will help me clear CAIIB in a single attempt.