CAT is essentially an internal battle of nerves. The people who are able to keep their nerves in control are able to extract their innate ability to crack the exam. The people who crack CAT have one thing in common- strong aptitude. They combine their natural ability with a lot of hard work and preparation. The CAT tests your aptitude in various subjects such as Quant, LR, and VA. The idea is to check whether you possess critical, analytical, logical and verbal skills, which are considered essential for all business executives.