Interview process was slow. Had 70 candidates interviewed in a single day. If you don't know a question, sound positive. They need candidates who look enthusiastic so that they can undergo the training successfully. Be courteous during the HR interview. It is a cakewalk. Be truthful and don't fake. They can easily understand from your expressions. And finally be patient. My interview was the last of all 70 candidates and had to wait for 6 hours.