Your greatest weakness isn't the technical edifice that you are least knowledgeable about - which will be constantly changing anyway due to the advent of new technical paradigms and the obsolescence of skills you once relied upon. Your greatest weakness are the character flaws that reliably lead to poor decisions. For example (not based on you in any way) you might be an impatient person. When you're starting out and…
People who can win bogus interview have skill to win bogus interview, nothing more. I just can read your or someone else's tip comment and go apply seriously with that in mind. On 10th try I'll master it.