The best thing you can do is demonstrate your enthusiasm and ability to self-educate and grow. "Studying for the test" is more likely to backfire, as you'll tr

The best thing you can do is demonstrate your enthusiasm and ability to self-educate and grow. "Studying for the test" is more likely to backfire, as you'll try to bluff your way through on things you don't know and get found out. The best way to answer questions where you don't know the answer is to say "I don't know but here's how I'd go about figuring that out". It might be that they just want someone who has the paper credentials - that's always a risk with big established organisations. If that's the case, try not to worry if you miss out this time. The best thing to do is keep self-educating and working on interesting projects, and keep applying for positions, particularly with teams that care more about determination than paper qualifications. The most important thing to remember is that the best way to be in demand (by potential employers, clients, friends, partners alike) is to have a lot of options (aka "social proof"). If you think and act like this is the one and only big opportunity you're more likely to get nervous, and that makes everything harder. But if you patiently and methodically work towards having more successful projects under your belt, and keep seeking gradually more challenging opportunities, good things will happen for you with increasing frequency. Good luck!