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Top 37 Prompt Engineering Interview Questions

Entry Junior Mid Senior Expert
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Prompt Engineering Theoretical Questions

Q1:   

What is prompt engineering?

  
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Q2:   

What is the difference between zero-shot and few-shot prompting?

  
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Q3:   

What does temperature control in an LLM API call?

  
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Q4:   

What is the difference between a system prompt and a user prompt?

  
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Q5:   

What is negative prompting, and why is it less reliable than positive instruction?

  
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Q6:   

What is in-context learning?

  
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Q7:   

What is chain-of-thought (CoT) prompting?

  
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Q8:   

What is a context window, and why does it constrain prompt design?

  
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Q9:   

What is the difference between top-p and top-k sampling?

  
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Q10:   

How would you use XML tags or delimiters to structure a prompt?

  
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Q11:   

What is zero-shot chain-of-thought prompting?

  
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Q12:   

How does role prompting change a model's output?

  
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Q13:   

What is the ReAct prompting pattern?

  
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Q14:   

What is self-consistency prompting?

  
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Q15:   

Why explain the rationale behind a prompt constraint?

  
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Q16:   

What is prompt chaining?

  
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Q17:   

How does prompt injection differ from jailbreaking?

  
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Q18:   

How does prompting differ for function calling / tool use?

  
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Q19:   

What is meta-prompting?

  
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Q20:   

What is LLM-as-a-judge, and what are its pitfalls?

  
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Q21:   

What is least-to-most prompting?

  
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Q22:   

What is Tree of Thoughts (ToT) prompting?

  
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Q23:   

How does prompting differ for extended-thinking / reasoning models?

  
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Q24:   

What is automatic prompt optimization (e.g. DSPy, APE)?

  
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Q25:   

Why can chain-of-thought reasoning be unfaithful to a model's real computation?

  
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Q26:   

Why is prompt output brittle to small wording changes, and how do you guard against it?

  
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Prompt Engineering Practical Challenges

Q1:   

How would you force a model to return an exact output format, like 3 bullet points?

  
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Q2:   

How do you write clear and direct prompts?

  
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Q3:   

How would you design effective few-shot examples?

  
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Q4:   

What is prefilling a model's response, and when would you use it?

  
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Q5:   

How would you reduce hallucinations through prompt design?

  
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Q6:   

How would you prompt a model to reliably return valid JSON?

  
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Q7:   

How does prompt caching reduce cost and latency?

  
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Q8:   

What is prompt injection, and how would you mitigate it?

  
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Q9:   

How would you design an eval set to test a prompt change before shipping it?

  
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Q10:   

How would you prompt a model to self-check its answer?

  
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Q11:   

How would you set a tool-use policy in a prompt?

  
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