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.

Easy 190Medium 2,498Hard 982
FiltersDifficulty, topic, company

4,310 questions

  1. 481Task SchedulerCoding· Google
  2. 482Tell me about a time an AI feature you shipped backfired.HardBehavioral· 20 min
  3. 483Tell me about a time data or experimentation changed your decision under ambiguity.MediumDataBehavioral· 10 min
  4. 484Tell me about an AI feature you launched despite significant model limitations.HardBehavioral· 20 min
  5. 485The Number of Ways to Make the SumCoding· Visa
  6. 486Top k frequent elementsMediumCoding· Amazon, Apple
  7. 487Topological sort or Kahn's algorithmCoding· Amazon, Microsoft
  8. 488Trapping RainwaterCoding· BloomBerg, PhonePe
  9. 489Two SumEasyCoding· Adobe, Pluang
  10. 490Unique paths IICoding· Amazon
  11. 491Valid Palindrome IIICoding· Adobe, Barclays
  12. 492Valid Paranthesis CheckerCoding· Amazon, Fidelity
  13. 493Valid Word AbbreviationCoding· Amazon
  14. 494Vertical Order TraversalCoding· Salesforce
  15. 495Walls and GatesCoding· Amazon, BitGo
  16. 496What causes GPU out-of-memory errors during inference, and how do you respond?HardTechnicalCoding· 20 min
  17. 497What does temperature control, and when would you set it near zero?Easy· 5 min
  18. 498What is a context window, and what breaks when you exceed it?Easy· 5 min
  19. 499What is a tokenizer, and why does token count drive cost and context limits?Easy· 5 min
  20. 500What is an embedding, and what does semantic similarity mean in retrieval?Easy· 5 min
  21. 501What is data leakage, and how can it invalidate an evaluation?MediumAI ML· 10 min
  22. 502What is knowledge distillation, and when would you use it?Medium· 10 min
  23. 503What is the difference between model capability risk and application-layer risk?Hard· 20 min
  24. 504What product, safety, and organizational trade-offs determine whether to deploy AI watermarking?HardProduct· 20 min