Module 02 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. The system message is best used for…
- A. The user's question
- B. Durable role, constraints, and output expectations that apply to every turn
- C. Retrieved documents
- D. Examples only
2. Hard-coding a provider and model name throughout your app causes…
- A. Better performance
- B. Painful migration when pricing, availability, or capability changes
- C. Lower cost
- D. Fewer bugs
3. Prompt templates with variables are preferable to string concatenation because…
- A. They are shorter
- B. They make the prompt structure explicit, reviewable, and testable
- C. They run faster
- D. They avoid tokens
4. Inserting untrusted user text directly into a system prompt is risky because…
- A. It costs more
- B. It lets user content override your instructions - prompt injection
- C. It slows the model
- D. It breaks templates
5. Setting max tokens too low typically produces…
- A. An error
- B. Silently truncated output that looks complete but is not
- C. Better answers
- D. Lower quality embeddings
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Answer Key and Explanations
Check these only after attempting every question.
1. B - Durable role, constraints, and output expectations that apply to every turn
Stable instruction belongs in the system role; per-turn content belongs in user messages.
2. B - Painful migration when pricing, availability, or capability changes
Configure the model in one place. Provider choice is an operational decision that will change.
3. B - They make the prompt structure explicit, reviewable, and testable
A prompt you can diff and test is a prompt you can improve deliberately.
4. B - It lets user content override your instructions - prompt injection
Keep untrusted content in the user/content role and treat it as data, never as instruction.
5. B - Silently truncated output that looks complete but is not
Truncation mid-structure is a common cause of malformed JSON and half-finished answers.
Practical Check
Apply this module to your own work: complete the module activity for *Models, Messages, Prompts, and Provider Configuration*, 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.