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質問 # 128
A company is building an enterprise AI platform. The company must catalog models for production, manage model versions, and associate metadata such as training metrics with models. The company needs to eliminate the burden of managing different versions of models.
Which solution will meet these requirements?
正解：C
解説：
The correct answer is B. Use the Amazon SageMaker Model Registry to catalog the models. Create model groups for each model to manage the model versions and to maintain associated metadata.
The Amazon SageMaker Model Registry is a managed repository within SageMaker designed specifically for production-grade ML model lifecycle management. It allows organizations to catalog models, track multiple versions of a model, associate rich metadata, and manage deployment workflows in a scalable, controlled manner. Each model can belong to a model group, which acts as a container for all versions of that particular model. Versions can store training metrics, hyperparameters, model artifacts, and other key metadata, enabling reproducibility, auditing, and automated promotion between stages (e.g., Staging # Production).
Option A, while using the Model Registry, relies on manually tagging versions and creating key-value pairs to store metadata. This approach is error-prone, lacks structured versioning, and does not integrate with SageMaker's deployment pipelines.
Options C and D suggest using Amazon ECR repositories. While ECR can store containerized model artifacts, it is not designed for ML-specific metadata, versioning, or automated model stage transitions. Using ECR alone would require custom-built solutions for metadata management, auditing, and version tracking, adding unnecessary operational overhead.
By leveraging the Model Registry with model groups, organizations can automate promotions, apply approval workflows, and track lineage efficiently, fully aligning with AWS best practices for ML model development and production readiness. This ensures compliance, reproducibility, and reduces operational complexity in enterprise AI platforms.
Using the Model Registry and model groups is the standard AWS-recommended approach for enterprise-scale model cataloging and version control, enabling teams to focus on model improvement rather than infrastructure management.
質問 # 129
An ML company wants to monitor and analyze the API calls that its AWS resources make. The company has created an AWS CloudTrail log file that logs to an Amazon S3 bucket. The company has also created an organization in AWS Organizations to manage permissions across accounts.
The company needs to enable log file validation to ensure the integrity of its log files.
Which solution will meet these requirements?
正解：D
解説：
The correct answer is A. Enable CloudTrail log file integrity validation.
AWS CloudTrail provides the ability to record API calls made to AWS services and delivers log files to an Amazon S3 bucket. For organizations that need to ensure the authenticity and integrity of these log files, AWS recommends enabling log file integrity validation. This feature applies a hash function to each log file and stores the hash separately, allowing you to verify that the logs have not been altered, deleted, or tampered with after delivery.
Enabling log file integrity validation is critical in ML operations when auditing model training pipelines, production inference calls, or system access patterns across accounts. It ensures that security-sensitive API activity is accurately recorded and verifiable. In multi-account environments managed by AWS Organizations, this validation provides an extra layer of trust when logs are consolidated from multiple accounts.
Option B, creating a multi-Region trail, ensures that API activity across regions is logged but does not inherently guarantee the integrity of logs. Option C, creating an organization trail, centralizes logging for all accounts, which is valuable for governance, but again does not automatically provide verification of log integrity. Option D, enabling CloudWatch Logs delivery, allows real-time monitoring and alerting but does not address the verification of historical log files.
By enabling log file integrity validation, organizations can cryptographically verify each log file, detect unauthorized changes, and meet compliance requirements for secure ML monitoring and auditing. This aligns with AWS best practices for ML solution monitoring, maintenance, and security, ensuring reliable tracking of model operations and API usage across distributed ML systems.
質問 # 130
A company has a conversational AI assistant that sends requests through Amazon Bedrock to an Anthropic Claude large language model (LLM). Users report that when they ask similar questions multiple times, they sometimes receive different answers. An ML engineer needs to improve the responses to be more consistent and less random.
Which solution will meet these requirements?
正解：A
解説：
Thetemperatureparameter controls the randomness in the model's responses. Lowering the temperature makes the model produce more deterministic and consistent answers.
Thetop_kparameter limits the number of tokens considered for generating the next word. Reducing top_k further constrains the model's options, ensuring more predictable responses.
By decreasing both parameters, the responses become more focused and consistent, reducing variability in similar queries.
質問 # 131
A company has a team of data scientists who use Amazon SageMaker notebook instances to test ML models. When the data scientists need new permissions, the company attaches the permissions to each individual role that was created during the creation of the SageMaker notebook instance.
The company needs to centralize management of the team's permissions.
Which solution will meet this requirement?
正解：B
質問 # 132
An ML engineer needs to use data with Amazon SageMaker Canvas to train an ML model. The data is stored in Amazon S3 and is complex in structure. The ML engineer must use a file format that minimizes processing time for the data.
Which file format will meet these requirements?
正解：A
質問 # 133
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