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NEW QUESTION # 25
An AI practitioner is building a model to generate images of humans in various professions. The AI practitioner discovered that the input data is biased and that specific attributes affect the image generation and create bias in the model.
Which technique will solve the problem?
Answer: B
NEW QUESTION # 26
A financial company has offices in different countries worldwide. The company requires that all API calls between generative AI applications and foundation models (FM) must not travel across the public internet.
Which AWS service should the company use?
Answer: A
Explanation:
AWS PrivateLink provides private connectivity between VPCs, AWS services, and on-premises networks, ensuring traffic does not traverse the public internet.
* A is correct:
"AWS PrivateLink provides private connectivity to services across VPCs, keeping API traffic off the public internet." (Reference: AWS PrivateLink Overview)
* B (Amazon Q) is a generative AI assistant, not a network security/control tool.
* C (CloudFront) is a CDN, not for private API calls.
* D (CloudTrail) is for logging and monitoring, not secure connectivity.
NEW QUESTION # 27
A company is using a pre-trained large language model (LLM) to extract information from documents. The company noticed that a newer LLM from a different provider is available on Amazon Bedrock. The company wants to transition to the new LLM on Amazon Bedrock.
What does the company need to do to transition to the new LLM?
Answer: C
Explanation:
Transitioning to a new large language model (LLM) on Amazon Bedrock typically involves minimal changes when the new model is pre-trained and available as a foundation model. Since the company is moving from one pre-trained LLM to another, the primary task is to ensure compatibility between the new model's input requirements and the existing application. Adjusting the prompt template is often necessary because different LLMs may have varying prompt formats, tokenization methods, or response behaviors, even for similar tasks like document extraction.
Exact Extract from AWS AI Documents:
From the AWS Bedrock User Guide:
"When switching between foundation models in Amazon Bedrock, you may need to adjust the prompt template to align with the new model's expected input format and optimize its performance for your use case. Prompt engineering is critical to ensure the model understands the task and generates accurate outputs." (Source: AWS Bedrock User Guide, Prompt Engineering for Foundation Models) Detailed Option A: Create a new labeled dataset.Creating a new labeled dataset is unnecessary when transitioning to a new pre-trained LLM, as pre-trained models are already trained on large datasets. This option would only be relevant if the company were training a custom model from scratch, which is not the case here.
Option B: Perform feature engineering.Feature engineering is typically associated with traditional machine learning models, not pre-trained LLMs. LLMs process raw text inputs, and transitioning to a new LLM does not require restructuring input features. This option is incorrect.
Option C: Adjust the prompt template.This is the correct approach. Different LLMs may interpret prompts differently due to variations in training data, tokenization, or model architecture. Adjusting the prompt template ensures the new LLM understands the task (e.g., document extraction) and produces the desired output format. AWS documentation emphasizes prompt engineering as a key step when adopting a new foundation model.
Option D: Fine-tune the LLM.Fine-tuning is not required for transitioning to a new pre-trained LLM unless the company needs to customize the model for a highly specific task. Since the question does not indicate a need for customization beyond document extraction (a common LLM capability), fine-tuning is unnecessary.
Reference:
AWS Bedrock User Guide: Prompt Engineering for Foundation Models (https://docs.aws.amazon.com/bedrock/latest/userguide/prompt-engineering.html) AWS AI Practitioner Learning Path: Module on Working with Foundation Models in Amazon Bedrock Amazon Bedrock Developer Guide: Transitioning Between Models (https://docs.aws.amazon.com/bedrock/latest/devguide/)
NEW QUESTION # 28
A research company needs to analyze legal documents. The documents are up to 1 million tokens long and include embedded high-resolution charts. The company also needs to ingest video summaries to generate compliance reports.
Which Amazon Nova model meets these requirements?
Answer: D
Explanation:
The verified answer is D. Amazon Nova Premier . The decisive requirement is the combination of a 1 million-token context window , multimodal document understanding, chart analysis, and video input. AWS documentation identifies Amazon Nova Premier as the most capable multimodal Amazon Nova understanding model. It supports text, image, and video inputs and generates text output. AWS also lists Amazon Nova Premier with a 1M context window , while Amazon Nova Pro and Amazon Nova Lite support
300k , and Amazon Nova Micro supports 128k and is text-only. Because the company's legal documents are up to 1 million tokens long, Nova Premier is the only listed option that satisfies the context-length requirement.
AWS documentation also states that Amazon Nova Premier has a supported context length of 1 million tokens , which AWS equates to 1 million tokens of text, 500 images, or 90 minutes of video. The same documentation explains that Nova Premier excels at question answering on long documents. This directly matches the research company's need to analyze very long legal documents and ingest video summaries for compliance reporting.
Amazon Nova Micro is incorrect because it is a text-only model and has a smaller context window. It cannot process embedded high-resolution charts or video inputs. Amazon Nova Lite is incorrect because it is multimodal, but its context window is 300k, which is below the 1 million-token requirement. Amazon Nova Pro is also incorrect for the same reason: it is highly capable and multimodal, but its context window is 300k rather than 1M. The requirement is not simply "multimodal"; it is long-context multimodal analysis at the 1 million-token scale. Therefore, the only model that fully meets the requirements is Amazon Nova Premier .
NEW QUESTION # 29
A company is developing an ML model to predict customer churn.
Which evaluation metric will assess the model's performance on a binary classification task such as predicting chum?
Answer: D
Explanation:
The company is developing an ML model to predict customer churn, a binary classification task (churn or no churn). The F1 score is an evaluation metric that balances precision and recall, making it suitable for assessing the performance of binary classification models, especially when dealing with imbalanced datasets, which is common in churn prediction.
Exact Extract from AWS AI Documents:
From the Amazon SageMaker Developer Guide:
"The F1 score is a metric for evaluating binary classification models, combining precision and recall into a single value. It is particularly useful for tasks like churn prediction, where class imbalance may exist, ensuring the model performs well on both positive and negative classes." (Source: Amazon SageMaker Developer Guide, Model Evaluation Metrics) Detailed Option A: F1 scoreThis is the correct answer. The F1 score is ideal for binary classification tasks like churn prediction, as it measures the model's ability to correctly identify both churners and non-churners.
Option B: Mean squared error (MSE)MSE is used for regression tasks to measure the average squared difference between predicted and actual values, not for binary classification.
Option C: R-squaredR-squared is a metric for regression models, indicating how well the model explains the variability of the target variable. It is not applicable to classification tasks.
Option D: Time used to train the modelTraining time is not an evaluation metric for model performance; it measures the duration of training, not the model's accuracy or effectiveness.
Reference:
Amazon SageMaker Developer Guide: Model Evaluation Metrics (https://docs.aws.amazon.com/sagemaker/latest/dg/model-evaluation.html) AWS AI Practitioner Learning Path: Module on Model Performance and Evaluation AWS Documentation: Metrics for Classification (https://aws.amazon.com/machine-learning/)
NEW QUESTION # 30
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