1Z0-1127-25 LLM Fundamentals Practice Question
Which of the following sampling strategies selects tokens based on a cumulative probability threshold from the highest probability tokens?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Top-p (nucleus) sampling
Top-p (nucleus) sampling cuts off the tail of the probability distribution where cumulative probability exceeds p, allowing dynamic vocabulary size.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Top-p (nucleus) sampling
Why this is correct
Top-p selects the smallest set of tokens whose cumulative probability exceeds p.
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Top-k sampling
Why it's wrong here
Top-k picks from the k highest probability tokens regardless of cumulative probability.
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Greedy decoding
Why it's wrong here
Greedy picks the single highest probability token every step.
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Temperature sampling
Why it's wrong here
Temperature scales logits but does not use cumulative probability threshold.
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