RAG Interview Questions & Answers (Explained With Diagrams, Not Definitions)

RAG questions come up in almost every AI engineering and data science interview right now, and this video answers 15 of the most common ones by actually building the mechanics on screen as we go — retrieval, chunking, evaluation — not just reading definitions off a page. Whether you're prepping for an AI engineer, ML engineer, or data scientist role, these are the 15 RAG interview questions that come up most, pulled from DataCamp's full list of 30 (link below for the rest). CHAPTERS 00:00 Intro 00:18 RAG Fundamentals 01:45 Chunking & Retrieval Strategy 03:24 Evaluation & Grounding 04:46 Advanced RAG Systems 06:24 Production Reality QUESTIONS COVERED, WITH TIMESTAMPS 00:21 What are the retriever and generator in a RAG system? 00:48 Sparse vs. dense retrieval: what's the difference? 01:14 What's the role of a vector database in RAG? 01:48 5 chunking techniques for RAG, explained 02:22 What is hybrid search? 02:46 What is late chunking? 03:27 How do you evaluate a RAG system? 03:55 Contextualization and Corrective RAG (CRAG), explained 04:21 How do you reduce latency in a real-time RAG system? 04:49 4 advanced RAG systems: Adaptive, Agentic, Corrective, and Self-RAG 05:25 CAG vs. RAG: what's the difference? 05:51 How does RAG maintain context in a multi-turn conversation? 06:26 How do you keep a RAG system reliable in production? 06:57 How do you handle data privacy and security in RAG? 07:32 What are the limitations of RAG? RESOURCES Full list of 30 RAG interview questions (with every answer): https://www.datacamp.com/blog/rag-interview-questions?utm_medium=organic_social&utm_source=youtube&utm_campaign=000000_1-rag-interview-questions_2-b2c_3-all_5-bl_8-ogsl-yt_10-bau Go deeper with the course: Retrieval Augmented Generation (RAG) with LangChain — https://www.datacamp.com/courses/retrieval-augmented-generation-rag-with-langchain?utm_medium=organic_social&utm_source=youtube&utm_campaign=000000_1-rag-interview-questions_2-b2c_3-all_7-le_8-ogsl-yt_10-bau Want more hands-on interview prep like this? Subscribe for the next one. #RAG #AIEngineering #DataCamp