1Z0-1127-25 OCI Generative AI Service Practice Question
A developer is using the OCI Generative AI Chat API with Cohere Command R+ to build a multi-turn conversational agent. They want the agent to always respond in a formal tone, regardless of the user's phrasing. Which parameter should they set in the API request to achieve this consistently?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the 'system' parameter (or preamble_override) to provide a system message like 'You are a formal assistant'
A system message or preamble override sets the overall behavior and tone of the assistant for the entire conversation. Temperature controls randomness; max tokens limits length; stop sequences end generation — none are suitable for defining a persistent tone.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set the 'stop_sequences' parameter to include periods
Why it's wrong here
Stop sequences define when the model should stop generating, not tone.
- ✗
Set the 'temperature' parameter to 0.1
Why it's wrong here
Temperature controls randomness, not tone. Lower temperature makes output more deterministic but does not enforce a formal tone.
- ✓
Use the 'system' parameter (or preamble_override) to provide a system message like 'You are a formal assistant'
Why this is correct
The system message or preamble override instructs the model on its behavior and tone, which persists across the conversation.
- ✗
Set the 'max_tokens' parameter to 200
Why it's wrong here
Max tokens limits response length but does not affect tone.
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