Question bank

4,310 interview questions, answered.

Reference answers, what the interviewer is really testing, how it is graded, and the follow-ups that come next.

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36 questions

  1. 25QLoRA vs LoRAHardAI ML
  2. 26Quantization: INT8, INT4, FP8, AWQ, GPTQHardAI ML
  3. 27Regression testing before model/prompt changes shipHardAI ML
  4. 28Retrieval over structured data: tables, code, JSONHardAI ML
  5. 29RLHF in plain terms: what does it solve that SFT cannot?HardAI ML
  6. 30Scaling LLM inference for traffic spikesHardAI ML
  7. 31Sinusoidal positional encodings vs RoPEHardAI ML
  8. 32Speculative decoding: when it helps, when it failsHardAI ML
  9. 33The lineage from PPO to DPO to GRPOHardAI ML
  10. 34The "lost in the middle" phenomenonHardAI ML
  11. 35Why rerank after retrieval?HardAI ML
  12. 36Dynamic batching strategies for LLM inferenceHardAI ML