How do I answer 'What are your greatest strengths and weaknesses'?

Strengths: Name 2-3 concrete strengths with evidence from your professional experience, not buzzwords. 'I am analytical — in my last project I achieved a 15% cost reduction through data analysis.' Weaknesses: Name a real weakness (not a disguised strength like 'I am too much of a perfectionist') and show how you are actively working on it. Recruiters want to see self-reflection, not perfection.