Check faithfulness (answer supported by context), relevance, and latency/cost. Keep a golden Q&A set. ShopNest weekly eval: 50 support questions scored by humans + automated checks.
HCLTech rounds often probe: Application support + development.
Themes commonly reported in public MNC interview experiences (AmbitionBox / LinkedIn / Glassdoor-style). Practice aloud; keep answers this short in the real round.