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| Section | Objectives |
|---|---|
| Implement secure and scalable AI systems | - Scalability and performance optimization
|
| Plan and design AI solutions using Azure AI services | - Requirements gathering and solution architecture
|
| Operationalizing machine learning solutions | - Deployment and monitoring
|
| Design and implement generative AI solutions | - RAG (Retrieval Augmented Generation) solutions
|
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NEW QUESTION # 166
You need to recommend an experiment-tracking strategy that ensures consistent experiment results.
What should you recommend?
Answer: A
Explanation:
MLflow is the industry-standard open-source platform for experiment tracking, and Azure Machine Learning has first-class native integration with it. When you use MLflow within an Azure ML job, parameters, metrics, and artifacts are automatically logged to the run history of the AML workspace, making every run reproducible and comparable. Option A (AML job output logs) only captures console output and lacks structured parameter and metric logging. Option C (Application Insights logs) is designed for application- level telemetry, not ML experiment metadata. Option D (Azure Monitor alerts) is a reactive notification tool, not a tracking system. MLflow ' s autologging capability means that for common frameworks such as scikit- learn, XGBoost, and PyTorch, parameters and metrics are captured without a single line of custom code, directly answering Fabrikam ' s requirement for consistent experiment tracking.
Microsoft Learn Reference Topic: Track ML experiments with MLflow - Azure Machine Learning MLflow integration
NEW QUESTION # 167
A team is deploying machine learning models to a production inference endpoint in Azure Machine Learning.
The team requires a safe way to validate a new model version without disrupting existing users.
You need to recommend a deployment strategy for controlled testing of a new model version.
What should you configure?
Answer: D
Explanation:
The best strategy for controlled testing of a new model version in Azure Machine Learning is Blue-Green Deployment, often referred to as a safe rollout.
This approach allows you to deploy a new model version alongside the current one within the same Managed Online Endpoint without disrupting existing users.
Key Features of Blue-Green Deployment in Azure ML
Simultaneous Versions: Both the current "Blue" and new "Green" models run concurrently on the same endpoint.
*-> Traffic Shifting: You can use the endpoint's load balancer to allocate a specific percentage (e.g., 10%) of live production traffic to the new version.
Mirrored Traffic: For even lower risk, you can test the new model with mirrored traffic, where production requests are copied to the new model for validation without using its responses for the end user.
Instant Rollback: If the new model performs poorly, you can instantly shift 100% of traffic back to the original version.
Deployment Headers: You can bypass general traffic splitting to test the "Green" deployment specifically by adding an azureml-model-deployment header to your HTTP requests.
Reference:
https://learn.microsoft.com/en-us/azure/machine-learning/how-to-safely-rollout-online-endpoints
NEW QUESTION # 168
Multiple teams need access to approved models with version tracking, lineage, and governance controls. Models must be discoverable and reusable across projects. What Azure ML feature should you use?
Answer: D
Explanation:
A model registry provides centralized management of models, including versioning, lineage tracking, and governance. This enables teams to discover, share, and reuse models efficiently.
Simple storage solutions like blob storage lack these advanced capabilities and do not support proper lifecycle management.
NEW QUESTION # 169
You are monitoring a fine-tuned large language model deployed in Microsoft Foundry.
You evaluate the model before and after fine-tuning by using the same evaluation dataset.
You review the following evaluation results:
You need to determine whether the fine-tuned model shows improved performance without introducing regression.
For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
When evaluating a fine-tuned model against the base model using the same evaluation dataset, the interpretation of each metric requires careful analysis. A statement that the fine-tuned model improves on the target task is True if and only if the target metric such as task-specific accuracy, F1 score, or ROUGE score shows a statistically meaningful improvement. A statement about regression on a complementary metric is True if the fine-tuned model ' s score on that metric is meaningfully lower than the base model ' s. In Microsoft Foundry ' s evaluation framework, both pre-fine-tuning and post-fine-tuning results are stored against the same experiment, enabling direct side-by-side comparison. The core principle is that improvement on the primary task is not sufficient if fine-tuning causes degradation on safety or coherence - this is called catastrophic forgetting, and the evaluation dataset is designed to detect it.
Microsoft Learn Reference Topic: Evaluate fine-tuned models in Microsoft Foundry - Compare base and fine- tuned model metrics
NEW QUESTION # 170
You create a binary classification model. You use the Fairlearn package to assess model fairness.
You must eliminate the need to retrain the model.
You need to implement the Fairlearn package.
Which algorithm should you use?
Answer: A
Explanation:
The question ' s constraint is explicit: no retraining. This immediately eliminates ExponentiatedGradient (option A), which is a reduction-based in-processing algorithm that requires retraining as part of the fairness- aware optimization process. GridSearch (option C) systematically trains multiple models across a grid of fairness constraints, again requiring training. CorrelationRemover (option B) is a pre-processing technique that transforms training features before training, also requiring a new training run. ThresholdOptimizer (option D) is a post-processing algorithm: it takes an already-trained model and optimizes its classification thresholds independently for different sensitive-attribute groups to achieve a fairness constraint such as equalized odds or demographic parity, without touching the model weights. This is the only Fairlearn approach that operates purely at inference time on an existing model.
Microsoft Learn Reference Topic: Mitigate unfairness in machine learning models with Fairlearn - Post- processing with ThresholdOptimizer
NEW QUESTION # 171
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