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206. Frage
A company wants to make a chatbot to help customers. The chatbot will help solve technical problems without human intervention. The company chose a foundation model (FM) for the chatbot. The chatbot needs to produce responses that adhere to company tone.
Which solution meets these requirements?
Antwort: A
Begründung:
Experimenting and refining the prompt is the best approach to ensure that the chatbot using a foundation model (FM) produces responses that adhere to the company's tone.
* Prompt Engineering:
* Adjusting and refining the prompt allows for better control over the FM's outputs, ensuring they align with the desired tone and style.
* This iterative process involves testing different prompts and modifying them based on the model's responses to achieve the desired outcome.
* Why Option C is Correct:
* Directly Influences Output Quality: Allows for fine-tuning of the model's responses to match the company's tone.
* Cost-Effective: Does not require modifying the model itself, only the inputs to it.
* Why Other Options are Incorrect:
* A. Low limit on tokens: Limits response length but not the adherence to company tone.
* B. Batch inferencing: Relates to processing multiple inputs, not controlling response tone.
* D. Higher temperature: Increases randomness in responses, which could deviate from the desired tone.
207. Frage
A company is building an application that needs to generate synthetic data that is based on existing data.
Which type of model can the company use to meet this requirement?
Antwort: C
208. Frage
A company wants to use a large language model (LLM) in the company's internal AI assistant. The company wants to customize the LLM by using medical papers to familiarize the LLM with medical topics.
Which technique will meet these requirements?
Antwort: B
Begründung:
The verified answer is A. Continuous pre-training. The company wants to expose an existing LLM to medical papers so the model becomes more familiar with medical topics, terminology, and writing patterns. AWS generative AI documentation defines continued pre-training as extending the pre-training phase of a foundation model by exposing it to additional unlabeled text from specific domains or corpora. It also explains that continued pre-training helps the model acquire deeper knowledge of new domains and adapt to domain-specific terminology and content types.
That exactly matches the scenario. Medical papers are typically domain text. The goal is not to train the model to follow a labeled input-output task, but to improve its domain familiarity and medical-language fluency. AWS security reference guidance also distinguishes continued pre-training from fine-tuning by stating that continued pre-training uses unlabeled data to enhance domain knowledge, while fine-tuning uses labeled data to optimize task-specific performance.
Supervised learning is incorrect because it requires labeled training examples, usually input-output pairs. The question only says the company has medical papers, not labeled prompts and responses.
Reinforcement learning is incorrect because it optimizes behavior based on rewards, feedback, or preference signals. The question does not describe reward modeling or human preference feedback.
Boosting is incorrect because boosting is an ensemble technique that combines weak learners to improve predictive performance. It is not the standard method for adapting an LLM to a specialized knowledge domain.
209. Frage
An AI practitioner trained a custom model on Amazon Bedrock by using a training dataset that contains confidential dat a. The AI practitioner wants to ensure that the custom model does not generate inference responses based on confidential data.
How should the AI practitioner prevent responses based on confidential data?
Antwort: D
Begründung:
When a model is trained on a dataset containing confidential or sensitive data, the model may inadvertently learn patterns from this data, which could then be reflected in its inference responses. To ensure that a model does not generate responses based on confidential data, the most effective approach is to remove the confidential data from the training dataset and then retrain the model.
Explanation of Each Option:
Option A (Correct): "Delete the custom model. Remove the confidential data from the training dataset. Retrain the custom model."This option is correct because it directly addresses the core issue: the model has been trained on confidential data. The only way to ensure that the model does not produce inferences based on this data is to remove the confidential information from the training dataset and then retrain the model from scratch. Simply deleting the model and retraining it ensures that no confidential data is learned or retained by the model. This approach follows the best practices recommended by AWS for handling sensitive data when using machine learning services like Amazon Bedrock.
Option B: "Mask the confidential data in the inference responses by using dynamic data masking."This option is incorrect because dynamic data masking is typically used to mask or obfuscate sensitive data in a database. It does not address the core problem of the model beingtrained on confidential data. Masking data in inference responses does not prevent the model from using confidential data it learned during training.
Option C: "Encrypt the confidential data in the inference responses by using Amazon SageMaker."This option is incorrect because encrypting the inference responses does not prevent the model from generating outputs based on confidential data. Encryption only secures the data at rest or in transit but does not affect the model's underlying knowledge or training process.
Option D: "Encrypt the confidential data in the custom model by using AWS Key Management Service (AWS KMS)."This option is incorrect as well because encrypting the data within the model does not prevent the model from generating responses based on the confidential data it learned during training. AWS KMS can encrypt data, but it does not modify the learning that the model has already performed.
AWS AI Practitioner Reference:
Data Handling Best Practices in AWS Machine Learning: AWS advises practitioners to carefully handle training data, especially when it involves sensitive or confidential information. This includes preprocessing steps like data anonymization or removal of sensitive data before using it to train machine learning models.
Amazon Bedrock and Model Training Security: Amazon Bedrock provides foundational models and customization capabilities, but any training involving sensitive data should follow best practices, such as removing or anonymizing confidential data to prevent unintended data leakage.
210. Frage
A company wants to use AI to protect its application from threats. The AI solution needs to check if an IP address is from a suspicious source.
Antwort: B
Begründung:
Comprehensive and Detailed
Anomaly detection identifies unusual behavior (such as suspicious IP traffic) compared to normal baselines.
Speech recognition (A) is irrelevant.
NER in NLP (B) extracts entities from text, not detect malicious IPs.
Fraud forecasting (D) predicts fraudulent transactions but not directly suspicious IP activity.
Reference:
AWS Documentation - Anomaly Detection
211. Frage
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