최신Microsoft Azure AI Fundamentals (AI-900 Korean Version) - AI-900 Korean무료샘플문제

Explanation:

According to the Microsoft Azure AI Fundamentals (AI-900) official study guide and Microsoft Learn module "Identify features of Computer Vision workloads on Azure", Object Detection is a specific computer vision capability used to identify and locate multiple types of objects within a single image. Unlike image classification, which assigns one label to an entire image, object detection identifies individual objects, their categories, and their positions using bounding boxes or polygons.
In practical terms, Object Detection combines two key outputs:
* Classification - recognizing what the object is (for example, "car", "person", "dog").
* Localization - determining where the object appears in the image by drawing bounding boxes around it.
This technology is commonly used in scenarios such as traffic monitoring (detecting vehicles and pedestrians), retail shelf analysis (detecting products and inventory levels), and manufacturing quality control (identifying defective parts).
Microsoft's Azure Cognitive Services - Custom Vision includes a dedicated Object Detection domain, which allows developers to train custom models to recognize multiple object types within a single image. The service uses deep learning techniques, particularly convolutional neural networks (CNNs), to process pixel patterns and spatial relationships for accurate detection.
For contrast:
* Image Classification identifies only the overall category of an image (e.g., "This is a cat").
* Image Description generates captions summarizing the visual content (e.g., "A cat sitting on a couch").
* Optical Character Recognition (OCR) detects and extracts text from images, not physical objects.
Therefore, per the official AI-900 learning content and Azure documentation, when the goal is to identify multiple types of items within a single image, the correct AI workload is Object Detection.

Explanation:
Yes, Yes, and No.
According to the Microsoft Azure AI Fundamentals (AI-900) official study materials and the Microsoft Learn module "Identify features of natural language processing (NLP) workloads on Azure", the Azure Translator service is a cloud-based AI service within Azure Cognitive Services that provides real-time text translation across multiple languages.
* "You can use the Translator service to translate text between languages." - Yes.This is the core function of the Translator service. It takes text as input in one language and returns it in another using advanced neural machine translation models. This aligns with the AI-900 learning objective: "Describe the capabilities of Azure Cognitive Services for language", which specifically names Azure Translator as the service used to perform automatic text translation. The service supports over 100 languages and dialects, offering both single-sentence and document-level translations.
* "You can use the Translator service to detect the language of a given text." - Yes.This statement is also true. The Translator service automatically detects the source language if it is not specified in the request. This feature is documented in the Azure Translator API, where the system identifies the input language before performing translation. The AI-900 exam content emphasizes this as one of the Translator service's built-in capabilities-language detection for untagged text.
* "You can use the Translator service to transcribe audible speech into text." - No.This is not a function of Translator. Transcription (converting speech to text) is a speech AI workload, handled by the Azure Speech Service, not Translator. The Speech-to-Text capability in Azure Cognitive Services processes spoken audio input and returns the text transcription. The Translator service only works with text input, not direct audio.
Therefore, based on official AI-900 guidance, the verified configuration is:
# Yes - for text translation
# Yes - for language detection
# No - for speech transcription.
This aligns precisely with the AI-900 learning outcomes describing Text Translation and Language Detection as Translator capabilities, and Speech Transcription as part of the separate Speech service.

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Explanation:

This question is drawn from the Microsoft Azure AI Fundamentals (AI-900) syllabus section "Describe features of natural language processing (NLP) workloads on Azure." According to the Microsoft Learn materials, Natural Language Processing (NLP) is a branch of artificial intelligence that allows computers to analyze, understand, and generate human language. NLP enables machines to work with text or speech data in a way that extracts meaning, sentiment, and intent.
Microsoft defines NLP as enabling scenarios such as language detection, text classification, key phrase extraction, sentiment analysis, and named entity recognition. The example given-classifying emails as
"work-related" or "personal"-is a text classification task, which falls under NLP capabilities. The AI model processes the textual content of emails, identifies linguistic patterns, and categorizes them based on the detected topic or context.
Let's analyze the other options:
* Predict the number of future car rentals # This is a forecasting task, handled by machine learning regression models, not NLP.
* Predict which website visitors will make a transaction # This is a classification or prediction problem in machine learning, not NLP, since it deals with behavioral or numerical data rather than language.
* Stop a process in a factory when extremely high temperatures are registered # This is an IoT or anomaly detection scenario, focusing on sensor data, not language understanding.
Therefore, only classifying email messages as work-related or personal correctly represents an NLP use case.
It illustrates how NLP can analyze written text and make intelligent categorizations-a key capability covered in AI-900's natural language workloads section.

Explanation:

The correct mapping is based on how each Azure Cognitive Service functions within the Microsoft AI ecosystem, as detailed in the Microsoft Azure AI Fundamentals (AI-900) study guide and Microsoft Learn Cognitive Services documentation.
* Convert spoken requests into text # Azure AI SpeechThe Azure AI Speech service provides speech-to- text (STT) capabilities, which enable an application to recognize spoken language and convert it into written text. This functionality is foundational in voice-enabled applications like digital assistants or transcription services. When a user speaks, this service captures the audio signal and produces an accurate textual representation that can then be processed by other AI services.
* Identify the intent of a user's requests # Azure AI LanguageThe Azure AI Language service (which includes Conversational Language Understanding, formerly LUIS) is designed to extract meaning from text. It identifies intents-the goals or actions a user wants to perform-and entities, which are key details within that request. For example, in the command "Book a flight to Paris," the intent is "book a flight," and the entity is "Paris."
* Apply intent to entities and utterances # Azure AI LanguageAgain, the Language service performs this deeper contextual analysis. It not only identifies what the user wants (intent) but also applies it to utterances (specific user expressions) and entities (data elements extracted from text). This helps conversational AI systems take meaningful actions, such as fulfilling user requests.
In summary, Azure AI Speech handles audio-to-text conversion, while Azure AI Language performs natural language understanding, mapping intents and entities-a workflow essential in intelligent conversational applications.

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Explanation:

According to the Microsoft Azure AI Fundamentals (AI-900) official study guide and Microsoft Learn module "Identify features of common machine learning types", regression is a supervised machine learning technique used to predict continuous numerical values based on one or more input features. In this scenario, the task is to predict a vehicle's miles per gallon (MPG)-a continuous numeric value-based on several measurable factors such as weight, engine power, and other specifications.
Regression models learn the mathematical relationship between input variables (independent features) and a numeric target variable (dependent outcome). Common regression algorithms include linear regression, decision tree regression, and support vector regression. In the example, the model would analyze historical data of vehicles and learn patterns that map characteristics (like engine size, horsepower, and weight) to fuel efficiency. Once trained, it can predict the MPG for a new vehicle configuration.
The other options describe different problem types:
* Classification predicts discrete categories (for example, whether a car is "fuel efficient" or "not fuel efficient"), not continuous values.
* Clustering is an unsupervised learning method that groups data points based on similarities without predefined labels, not predictive modeling.
* Anomaly detection identifies data points that significantly deviate from normal patterns, such as detecting engine sensor failures or fraudulent transactions.
Since predicting MPG involves estimating a numeric value within a continuous range, regression is the most appropriate model type.
In summary, per AI-900 training content, regression models are used when the output variable is numeric, classification for categorical outputs, and clustering for pattern discovery. Therefore, predicting miles per gallon based on vehicle features is a textbook example of a regression problem in Azure Machine Learning.

Explanation:

According to Microsoft's Responsible AI principles, one of the key guiding values is Reliability and Safety, which ensures that AI systems operate consistently, accurately, and safely under all intended conditions. The AI-900 study materials and Microsoft Learn modules explain that an AI system must be trustworthy and dependable, meaning it should not produce results when the input data is incomplete, corrupted, or significantly outside the expected range.
In the given scenario, the AI system avoids providing predictions when important fields contain unusual or missing values. This behavior demonstrates reliability and safety because it prevents the system from making unreliable or potentially harmful decisions based on bad or insufficient data. Microsoft emphasizes that AI systems must undergo extensive validation, testing, and monitoring to ensure stable performance and predictable outcomes, even when data conditions vary.
The other options do not fit this scenario:
* Inclusiveness ensures that AI systems are accessible to and usable by all people, regardless of abilities or backgrounds.
* Privacy and Security focuses on protecting user data and ensuring it is used responsibly.
* Transparency involves making AI decisions explainable and understandable to humans.
Only Reliability and Safety directly address the concept of an AI system refusing to act or returning an error when it cannot make a trustworthy prediction. This principle helps prevent inaccurate or unsafe outputs, maintaining confidence in the system's integrity.
Therefore, ensuring an AI system does not produce predictions when input data is incomplete or unusual aligns directly with Microsoft's Reliability and Safety principle for responsible AI.

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Explanation:

Full Detailed Explanation (250-300 words):
* "You can fine-tune some Azure OpenAI models by using your own data." - YESThis statement is true.
Azure OpenAI allows customers to fine-tune certain models like GPT-3, GPT-3.5, and some embedding models with their own data. Fine-tuning customizes a model to perform better on specific tasks or match a company's domain terminology, tone, or context. According to Microsoft Learn's AI-
900 and Azure OpenAI documentation, fine-tuning is supported for approved use cases while maintaining Microsoft's Responsible AI oversight and compliance process.
* "Pretrained generative AI models are a component of Azure OpenAI." - YESThis statement is also true. Azure OpenAI provides access to pretrained large language and generative AI models such as GPT-3.5, GPT-4, Codex, and DALL E. These models are pretrained on vast datasets and made available via APIs, allowing developers to generate text, code, and images without needing to train their own models. This is a core feature of Azure OpenAI's service offering.
* "To build a solution that complies with Microsoft responsible AI principles, you must build and train your own model." - NOThis statement is false. Compliance with Microsoft Responsible AI principles (Fairness, Reliability & Safety, Privacy & Security, Inclusiveness, Transparency, Accountability) does not require building custom models. Prebuilt Azure AI and OpenAI services already align with Responsible AI standards. Developers simply need to use these services responsibly, applying governance and ethical design practices.

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