Explanation:

Box 1: Entity recognition
the Named Entity Recognition module in Machine Learning Studio (classic), to identify the names of things, such as people, companies, or locations in a column of text.
Named entity recognition is an important area of research in machine learning and natural language processing (NLP), because it can be used to answer many real-world questions, such as:
Which companies were mentioned in a news article?
Does a tweet contain the name of a person? Does the tweet also provide his current location?
Were specified products mentioned in complaints or reviews?
Box 2: Sentiment Analysis
The Text Analytics API's Sentiment Analysis feature provides two ways for detecting positive and negative sentiment. If you send a Sentiment Analysis request, the API will return sentiment labels (such as "negative",
"neutral" and "positive") and confidence scores at the sentence and document-level.
Reference:
https://docs.microsoft.com/en-us/azure/machine-learning/studio-module-reference/named-entity-recognition
https://docs.microsoft.com/en-us/azure/cognitive-services/text-analytics/how-tos/text-analytics-how-to- sentiment-analysis

According to the Microsoft Azure AI Fundamentals (AI-900) official study guide and Microsoft Learn module "Identify features of Azure Machine Learning", the Split Data module in an Azure Machine Learning pipeline is used to divide a dataset into two or more subsets-typically a training dataset and a testing (or validation) dataset. This is a fundamental step in the supervised machine learning workflow because it allows for accurate evaluation of the model's performance on data it has not seen during training.
In a typical workflow, the data flows as follows:
* The dataset is first preprocessed (cleaned, normalized, or transformed).
* The Split Data module divides this dataset into two parts - one for training the model and another for testing or scoring the model's accuracy.
* The Train Model module uses the training data output from the Split Data module to learn patterns and build a predictive model.
* The Score Model module then takes the trained model and applies it to the test data output to measure how well the model performs on unseen data.
The Split Data module typically uses a defined ratio (such as 0.7:0.3 or 70% for training and 30% for testing).
This ensures that the trained model can generalize well to new, real-world data rather than simply memorizing the training examples.
Now, addressing the incorrect options:
* A. Selecting columns that must be included in the model is done by the Select Columns in Dataset module.
* C. Diverting records that have missing data is handled by the Clean Missing Data module.
* D. Scaling numeric variables is done using the Normalize Data or Edit Metadata modules.
Therefore, based on the official AI-900 learning objectives, the verified and most accurate answer is B.
creating training and validation datasets.

Explanation:

This question tests understanding of AI workload types, a fundamental topic in the Microsoft Azure AI Fundamentals (AI-900) curriculum. Each workload type-Computer Vision, Natural Language Processing, Machine Learning (Regression), and Anomaly Detection-serves a specific function within the AI landscape, as explained in Microsoft Learn's module "Describe features of common AI workloads."
* Computer Vision enables computers to "see" and interpret visual information such as images or videos.
Identifying handwritten letters requires analyzing image patterns, shapes, and strokes, which is a classic image recognition task. Azure's Computer Vision API and Custom Vision services are specifically designed for such tasks.
* Natural Language Processing (NLP) involves interpreting human language, both written and spoken.
Determining the sentiment of a social media post (positive, negative, or neutral) is a typical text analytics use case within NLP, often implemented using Azure's Text Analytics for Sentiment Analysis.
* Anomaly Detection focuses on identifying data points that deviate from normal patterns. Detecting fraudulent credit card payments requires finding transactions that are unusual compared to historical spending behavior. Azure's Anomaly Detector API applies machine learning to identify such irregularities.
* Machine Learning (Regression) is used for predicting continuous numerical outcomes based on historical data. Estimating next month's toy sales is a regression problem-an example of supervised learning where the model predicts future sales values from past sales data.
Thus, based on Microsoft's official AI-900 learning objectives, the correct mapping of workloads to scenarios is:
* Computer Vision # Identify handwritten letters
* NLP # Predict sentiment
* Anomaly Detection # Fraud detection
* Machine Learning (Regression) # Predict toy sales

Explanation:

According to the Microsoft Azure AI Fundamentals (AI-900) official study guide and the Microsoft Learn module "Identify features of common AI workloads", OCR (Optical Character Recognition) is a Computer Vision technology that detects and extracts printed or handwritten text from images and scanned documents.
OCR allows organizations and individuals to convert physical or image-based text into machine-readable, editable, and searchable digital text.
In the context of this question, a historian working with old newspaper articles or archival documents would use OCR to digitize printed content. For instance, the historian can scan or photograph old newspaper pages, and then use an OCR tool-such as Azure Computer Vision's OCR API-to automatically recognize and extract the textual content from those images. This process enables the historian to store, edit, and analyze the content digitally without manually typing everything.
OCR works by using deep learning algorithms trained on thousands of text samples. The system analyzes patterns, shapes, and spatial relationships of characters to identify text accurately, even from low-quality or aged paper documents. Once extracted, the digital text can be indexed, translated, or processed further using Natural Language Processing (NLP) tools for content analysis.
Now, addressing the other options:
* Facial analysis is used to detect emotions, age, or gender from human faces-irrelevant to text digitization.
* Image classification identifies entire images by categories (e.g., cat, car, flower).
* Object detection identifies and locates multiple objects within an image but doesn't extract text.
Therefore, per the AI-900 learning objectives under the Computer Vision workload, the correct and verified completion is:

In Azure OpenAI Service, fine-tuning refers to the process of uploading your own labeled dataset to customize or adapt a pretrained model (such as GPT-3.5 or Curie) for a specific use case. According to the Microsoft Learn documentation and AI-900 official study guide, fine-tuning allows organizations to improve a model's performance on domain-specific tasks or to align responses with brand tone and context.
Fine-tuning differs from simple prompting because it requires providing structured training data (usually in JSONL format) that contains pairs of input prompts and ideal completions. The model uses this data to adjust its internal weights, thereby "learning" your organization's language patterns, terminology, or industry context.
Option review:
* A. Completion: Refers to the text generated by a model in response to a prompt. It's the output, not the customization process.
* B. Grounding: Integrates external, up-to-date data sources (like search results or databases) during inference but doesn't alter the model's parameters.
* C. Fine-tuning: # Correct - this is the process of uploading and training with your own data.
* D. Prompt engineering: Involves designing effective prompts but does not change the underlying model.
Thus, fine-tuning is the term used for customizing an Azure OpenAI model using your own uploaded data.