Pass the Amazon Web Services AWS Certified AI Practitioner AIF-C01 Questions and answers with CertsForce

Providing labeled data with both a prompt field and a completion field is the correct strategy for fine-tuning a foundation model (FM) on Amazon Bedrock.

Fine-Tuning Strategy:

To fine-tune a model, labeled data that pairs input prompts with the correct outputs (completions) is necessary.

This allows the model to learn the desired behavior or response style based on the provided examples.

Why Option A is Correct:

Proper Training Format: The prompt-completion pairs provide the necessary format for training the model to produce accurate outputs.

Customization: Ensures that the model is fine-tuned to the specific requirements of the company’s data and desired outputs.

Why Other Options are Incorrect:

B. Prepare a .txt file in .csv format: This does not align with the specific need for labeled data with prompts and completions.

C. Purchase Provisioned Throughput: Relates to read/write capacity in databases, not to model fine-tuning.

D. Train on journals and textbooks: Lacks the specific format and labeling required for fine-tuning.

The correct answer is B because K-means is an unsupervised learning algorithm used for clustering data points into groups (clusters) based on feature similarity. It is ideal for customer segmentation use cases where the goal is to discover natural groupings based on buying behavior and demographics without pre-labeled data.

From AWS documentation:

"K-means is a clustering algorithm that assigns data points to one of K groups based on feature similarity. It is commonly used in marketing and customer segmentation to group users with similar characteristics."

Explanation of other options:

A. K-nearest neighbors is a supervised classification algorithm, not intended for clustering.

C. Decision tree is also a supervised learning method used for classification or regression tasks.

D. Support vector machine is used for classification and regression, not unsupervised clustering.

Referenced AWS AI/ML Documents and Study Guides:

AWS ML Specialty Guide – Unsupervised Learning and Clustering

AWS ML Algorithm Selection Guide

Amazon SageMaker Built-in Algorithms – K-means Clustering

Foundation models have a context window (max tokens), which limits the size of the input text (prompt + instructions).

If the input (e.g., a very long book) exceeds this limit, the model cannot process it, causing failure.

Temperature (A) and Top P (C) control randomness, not input size.

Fine-tuning (B) is irrelevant to input truncation failures.

???? Reference:

AWS Documentation – Amazon Bedrock Model Parameters (context size limits)

The correct answer is C – Amazon Kendra, AWS’s enterprise search service designed for organizations with large, diverse document repositories. Kendra uses machine learning and natural language understanding (NLU) to provide semantic search, meaning it retrieves results based on meaning rather than keyword matching. According to AWS documentation, Kendra is ideal for educational, enterprise, and knowledge-management scenarios where users need fast, accurate retrieval across PDFs, HTML, Office documents, FAQs, and multimedia transcripts. Kendra connectors can index content from S3, SharePoint, LMS platforms, and internal databases, making it perfect for large volumes of training materials. Amazon Comprehend (A) is for NLP tasks like entity extraction, not enterprise search. Amazon Textract (B) extracts text from PDFs and scanned materials but does not provide search capabilities. Amazon Personalize (D) is for personalized recommendations, not document retrieval. Kendra is purpose-built for enterprise search and aligns directly with the company's needs.

Referenced AWS Documentation:

Amazon Kendra Developer Guide – Enterprise Search

AWS ML Specialty Guide – Intelligent Search Systems

Embeddings are numerical representations of objects (such as words, sentences, or documents) that capture the objects' semantic meanings in a form that AI and NLP models can easily understand. These representations help models improve their understanding of textual information by representing concepts in a continuous vector space.

Option A (Correct): "Embeddings": This is the correct term, as embeddings provide a way for models to learn relationships between different objects in their input space, improving their understanding and processing capabilities.

Option B: "Tokens" are pieces of text used in processing, but they do not capture semantic meanings like embeddings do.

Option C: "Models" are the algorithms that use embeddings and other inputs, not the representations themselves.

Option D: "Binaries" refer to data represented in binary form, which is unrelated to the concept of embeddings.

AWS AI Practitioner References:

Understanding Embeddings in AI and NLP: AWS provides resources and tools, like Amazon SageMaker, that utilize embeddings to represent data in formats suitable for machine learning models.

Retraining or pre-training is costly and unnecessary for just using company policies.

Fine-tuning adapts models but is inefficient for frequently changing company documents.

Retrieval-Augmented Generation (RAG) is the best approach — it retrieves relevant policy documents from a knowledge base and feeds them into the model context in real time, ensuring accurate and up-to-date responses.

???? Reference:

AWS Documentation – RAG with Amazon Bedrock

The correct answer is D. Amazon Bedrock Agents are used to orchestrate and execute complex workflows by connecting foundation models with APIs, databases, and tools. According to AWS documentation, agents interpret user inputs, plan the necessary steps, call external APIs or systems, and return structured results. This allows the model to go beyond text generation into full automation workflows—such as booking tasks, querying internal systems, or summarizing reports. Option A describes multi-modal models, B refers to prompt tuning, and C misstates control delegation; agents act autonomously based on model reasoning. Thus, Bedrock Agents function as intelligent orchestrators, handling multi-step task execution through integrated tool use.

Referenced AWS AI/ML Documents and Study Guides:

Amazon Bedrock Developer Guide – Agents Overview

AWS Generative AI Best Practices – Workflow Orchestration

The correct answers are A and E because both directly align with AWS best practices for securing generative AI services and data privacy in enterprise applications.

From the AWS Amazon Q Business documentation:

"AWS Key Management Service (KMS) integrates with Amazon Q Business to encrypt sensitive data at rest. You can use customer-managed KMS keys to meet compliance requirements."

And:

"You must configure IAM access controls to manage which users and applications can access Amazon Q Business indexes, ensuring that only authorized users can retrieve information."

Explanation of other options:

B. Cross-account access is not a common requirement for internal enterprise use of Amazon Q Business unless explicitly sharing data across organizations. It’s not a requirement for securing access.

C. Amazon Inspector is a vulnerability management tool for EC2 and containers. It is unrelated to Amazon Q authentication or security.

D. Allowing public access would violate security and privacy principles and directly contradict the stated requirement.

Referenced AWS AI/ML Documents and Study Guides:

Amazon Q Business Developer Guide – Security and Identity Management

AWS KMS Documentation – Integration with Bedrock and Amazon Q

AWS Certified Machine Learning Specialty Guide – Responsible AI and Governance Section

Comprehensive and Detailed Explanation From Exact Extract:

In a RAG (Retrieval Augmented Generation) architecture, there are steps that can be optimized using offline batch processing, particularly for operations that do not require real-time updates:

A. Generation of content embeddings:When new content is published, it can be processed in batches to generate embeddings (vector representations) offline. These embeddings are then used at query time for similarity search. As new documents come in daily, batch processing is ideal for generating embeddings for all new content together.

“Content/document embeddings are typically generated offline, as this operation can be computationally expensive and does not need to happen in real-time.”

(Reference: AWS GenAI RAG Blog, Amazon Bedrock RAG Pattern)

C. Creation of the search index:After generating the content embeddings, these are indexed in a vector database or search service. This indexing is also typically performed in batch as part of the offline pipeline.

“Building or updating the vector index is often performed as a batch operation, reflecting the latest state of the content repository.”

(Reference: AWS RAG Pattern Whitepaper)

B, D, and E are real-time steps. Embeddings for user queries (B), retrieval of relevant content (D), and response generation (E) must be processed in real-time to provide an interactive experience.

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.