The interview was scheduled for two days later, giving me virtually no time to prepare. They asked detailed technical questions regarding concepts I have no experience with, which were not mentioned in the job description or part of my resume.

Nevertheless, my lackluster answers resulted in their decision not to go forward.

I don't feel this result was entirely my fault, given that I had so little time to prepare and was given no materials to give me an idea of what to expect in the interview.

For comparison, I have also had interviews with Facebook and Amazon. I didn't get a job offer with them either, but they were a much better experience. I knew what to expect of those interviews, and I know they did not go forward with me because I just couldn't quite solve problems as quickly and efficiently as they wanted.

Describe different types of authentication and how they work.