Top 10 RAG Fundamentals Interview Questions & Answers (2026)

Q1 What is Retrieval-Augmented Generation (RAG)? Generate → Q2 Explain the architecture of a basic Naive RAG system. Generate → Q3 What are the main components of a RAG pipeline? Generate → Q4 What role do embeddings play in RAG systems? Generate → Q5 What is a vector database and why is it used in RAG? Generate → Q6 What are the main challenges when building RAG systems? Generate → Q7 How do you evaluate the performance of a RAG system? Generate → Q8 What are common hallucination problems in RAG systems? Generate → Q9 How can caching improve RAG performance? Generate → Q10 What are the differences between RAG and fine-tuning? Generate →

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