1Z0-1127-25 Using OCI Generative AI Service Practice Question
Exhibit
Refer to the exhibit.
Error:
{
"code": "InvalidParameter",
"message": "The parameter 'top_p' should be between 0 and 1.",
"status": 400
}A developer makes an API call to generate text with top_p=1.5. What is the correct way to fix this error?
⚠ Common exam trap
OCI often tests the misconception that `top_p` can be any positive number, similar to `temperature`, when in fact it is a probability threshold strictly bounded between 0 and 1.
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
✓
Set top_p to a value between 0 and 1, e.g., 0.9
The `top_p` parameter, also known as nucleus sampling, must be a probability value between 0 and 1. Setting it to 1.5 is invalid because it exceeds the allowed range, which would cause the API to reject the request. The correct fix is to set `top_p` to a valid value such as 0.9, which restricts token selection to the smallest set whose cumulative probability exceeds that threshold.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Remove the top_p parameter from the request
Why it's wrong here
Removing it uses default, which is valid, but if they need top_p, adjust value.
- ✗
Increase the temperature parameter to compensate
Why it's wrong here
Temperature does not affect top_p validity.
- ✓
Set top_p to a value between 0 and 1, e.g., 0.9
Why this is correct
Correcting the value to within the allowed range fixes the error.
- ✗
Use the top_k parameter instead
Why it's wrong here
Changing parameters avoids the error but does not fix the invalid top_p value.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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