I had to demonstrate how to inverse the value of an immutable object hashed data stream whilst ensuring that the dilithium matrix array was phase decoupled.
Seriously just be yourself, don't over think it. If you don't know something, don't be afraid to so, but you're keen to learn if it is something useful. You can't know everything, no one can, just be confident in the things you do know. Nothing worse than a faker, you'll be caught out anyway, you're going to be judged on your strengths not your weaknesses, unless the employer is crappy, and you wouldn't want to work for them anyway.
Seriously just be yourself, don't over think it. If you don't know something, don't be afraid to so, but you're keen to learn if it is something useful. You can't know everything, no one can, just be confident in the things you do know. Nothing worse than a faker, you'll be caught out anyway, you're going to be judged on your strengths not your weaknesses, unless the employer is crappy, and you wouldn't want to work for them anyway.
Good luck.