Module 07 Knowledge Check
5 questions. Pass mark 4 out of 5. Answer every question before checking the answer key below, then retry after reading the feedback.
1. RAG reduces hallucination but does not eliminate it because…
- A. Embeddings are lossy
- B. The model can still add, merge, or misstate details beyond the retrieved text
- C. Documents are long
- D. Indexes drift
2. Two retrieved documents give different figures. The assistant should…
- A. Pick the higher one
- B. Surface the conflict with both sources and dates rather than silently choosing
- C. Average them
- D. Refuse entirely
3. An outdated policy document still in the index is dangerous because…
- A. It uses storage
- B. It will be cited as current fact with full confidence
- C. It slows retrieval
- D. It breaks chunking
4. The most reliable defence against confident wrong answers is…
- A. A larger model
- B. Verifiable citations plus a human review step for consequential use
- C. A longer system prompt
- D. Lower temperature alone
5. Document version and effective date should be…
- A. Hidden from users
- B. Stored as metadata and shown alongside the answer
- C. Removed at chunking
- D. Only in the file name
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Answer Key and Explanations
Check these only after attempting every question.
1. B - The model can still add, merge, or misstate details beyond the retrieved text
Generation remains generative. Grounding constrains it; it does not switch it off.
2. B - Surface the conflict with both sources and dates rather than silently choosing
Hidden conflict resolution is where quiet errors enter. Making disagreement visible is the safer default.
3. B - It will be cited as current fact with full confidence
Freshness becomes a correctness property the moment documents are quoted back to users.
4. B - Verifiable citations plus a human review step for consequential use
Defence-in-depth: make claims checkable, and keep a human in the loop where the cost of error is high.
5. B - Stored as metadata and shown alongside the answer
Users cannot judge an answer's currency unless the system tells them which version it came from.
Practical Check
Apply this module to your own work: complete the module activity for *Hallucination Risks and Source Conflicts*, then write one sentence naming what your result shows and one naming what it does not.
Strong Answer Pattern
A strong answer names the task, the evidence used, the check performed, and the remaining limitation. It avoids "proved", "guaranteed", or "always" unless the evidence genuinely supports it.