mediumMultiple ChoiceObjective-mapped
PDE Practice Question: Refer to the exhibit
Exhibit
{
"severity": "ERROR",
"message": "Prediction failed: Model 'projects/my-project/models/12345/versions/v1' not found.",
"timestamp": "2024-01-20T10:00:00Z",
"request": "POST /v1/projects/my-project/models/12345:predict"
}Refer to the exhibit. A developer sees this log entry when trying to get a prediction. What is the most likely cause?
⚠ Common exam trap
Google Cloud often tests the distinction between model registry operations (uploading, versioning) and serving operations (deploying, predicting), trapping candidates who assume any model version in the registry is automatically available for predictions.
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
✓
The model version is not deployed
The log entry indicates that the model version specified in the request is not currently deployed to the serving infrastructure. In Google Cloud's Vertex AI, a model version must be explicitly deployed to an endpoint before it can serve predictions; attempting to predict against a non-deployed version returns an error. This is the most likely cause because the error message directly references the model version's deployment status.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The model ID is incorrect
Why it's wrong here
The model ID '12345' might be correct; the error specifically says version not found, not model not found.
- ✓
The model version is not deployed
Why this is correct
A model version must be deployed to an endpoint to serve predictions; 'not found' suggests it is not deployed.
- ✗
The endpoint does not exist
Why it's wrong here
The request is to the model resource, not an endpoint; the error is about the model version.
- ✗
The project ID is wrong
Why it's wrong here
The project ID is included in the model path; if incorrect, the error would be different.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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