Microsoft AI-900 Actual Questions

According to the Microsoft Azure AI Fundamentals (AI-900) learning path and Microsoft Learn documentation on GitHub Copilot, GitHub Copilot is powered by OpenAI Codex, a specialized language model derived from the GPT-3 family but fine-tuned specifically on programming languages and code data.

OpenAI Codex was designed to translate natural language prompts into executable code in multiple programming languages, including JavaScript, Python, C#, TypeScript, and Go. It can understand comments, function names, and code structure to generate relevant code suggestions in real time.

When a developer writes client-side JavaScript, GitHub Copilot uses Codex to analyze the context of the file and generate intelligent suggestions, such as completing functions, writing boilerplate code, or suggesting improvements. Codex can also explain what specific code does and provide inline documentation, which enhances developer productivity.

Option A (GPT-4): While some newer versions of GitHub Copilot (Copilot X) may integrate GPT-4 for conversational explanations, the core code completion engine remains based on Codex, as per the AI-900-level content.

Option C (DALL-E): Used for image generation, not for programming tasks.

Option D (GPT-3): Codex was fine-tuned from GPT-3 but has been further trained specifically for code generation tasks.

Therefore, the verified and official answer from Microsoft’s AI-900 curriculum is B. Codex — the OpenAI model used by GitHub Copilot to make suggestions for client-side JavaScript and other programming languages.

In Azure OpenAI, grounding refers to the process of connecting the model to external data sources (for example, a database, search index, or API) so that it can retrieve accurate and up-to-date information before generating a response. This is particularly important for scenarios requiring current facts or events, since OpenAI models like GPT-3.5 and GPT-4 are trained on data available only up to a certain cutoff date.

By adding grounding data, the model’s responses are “anchored” to factual sources retrieved at runtime, improving reliability and factual accuracy. Grounding is commonly implemented in Azure OpenAI + Azure Cognitive Search solutions (Retrieval-Augmented Generation or RAG).

Option review:

A. Modify the system message: Changes model tone or behavior but doesn’t supply real-time data.

B. Add grounding data: ✅ Correct — allows access to recent and domain-specific information.

C. Add few-shot learning: Provides examples in the prompt to improve context understanding but not factual accuracy.

D. Add training data: Refers to fine-tuning; this requires retraining and doesn’t update the model’s awareness of current events.

Hence, the best method to ensure accurate and current responses from an Azure OpenAI model is to add grounding data, enabling the model to reference real, updated sources dynamically.

The correct answer is A. Azure AI Document Intelligence (previously known as Form Recognizer). This Azure Cognitive Service is specifically designed to extract structured data and key information from scanned documents, forms, and contracts using advanced Optical Character Recognition (OCR) combined with machine learning models.

According to the Microsoft Learn module “Extract data from documents with Azure AI Document Intelligence”, this service enables automated data extraction from unstructured or semi-structured documents such as contracts, invoices, receipts, and purchase orders. It identifies key-value pairs, tables, and fields such as names, dates, amounts, and signatures. This makes it ideal for digitizing legal and business documents like contracts into structured formats that can be easily searched or stored in databases.

Azure AI Document Intelligence offers several model types:

Prebuilt models for common documents (invoices, receipts, business cards, etc.).

Custom models trained on your specific contract layouts.

Layout model for extracting raw text, tables, and structures.

The other options are incorrect:

B. Azure AI Immersive Reader enhances reading comprehension and accessibility but does not extract data from documents.

C. Azure OpenAI provides natural language generation and understanding but is not used for scanning or data extraction.

D. Azure AI Search indexes and searches textual or document content but relies on other services (like Document Intelligence) to extract the data first.

Therefore, to automatically extract details such as contract terms, names, dates, and signatures from scanned contract images, the best Microsoft AI service is A. Azure AI Document Intelligence

The correct answers are C. the Azure OpenAI GPT-4 model and D. the GitHub Copilot service.

According to the Microsoft Azure AI Fundamentals (AI-900) curriculum and Microsoft Learn documentation on Azure OpenAI and GitHub Copilot, both GPT-4 and GitHub Copilot can be used to analyze and generate explanations for code functionality, as well as produce or refine code comments.

Azure OpenAI GPT-4 model (C):The GPT-4 model is a large language model (LLM) developed by OpenAI and available through the Azure OpenAI Service. It is trained on vast amounts of text, including programming languages, documentation, and natural language instructions. This enables it to interpret source code, explain what it does, suggest optimizations, and automatically generate detailed code comments. When prompted with code snippets, GPT-4 can provide structured natural language explanations describing the logic and intent of the code. In enterprise scenarios, developers use Azure OpenAI GPT models for code understanding, review automation, and documentation generation.

GitHub Copilot service (D):GitHub Copilot, powered by OpenAI Codex, is an AI coding assistant integrated into IDEs such as Visual Studio Code. It can analyze code context and generate inline comments and explanations in real time. GitHub Copilot understands the syntax and intent of numerous programming languages and provides intelligent suggestions or explanations directly in the developer’s environment.

The other options are not suitable:

A. DALL-E is a generative image model for creating visual content, not text or code analysis.

B. Whisper is an automatic speech recognition (ASR) model used for converting speech to text, unrelated to code interpretation.

Therefore, based on the official Azure AI and GitHub documentation, the correct and verified answers are C. Azure OpenAI GPT-4 model and D. GitHub Copilot service.