Explanation:

Box 1: Select Columns in Dataset
For Columns to be cleaned, choose the columns that contain the missing values you want to change. You can choose multiple columns, but you must use the same replacement method in all selected columns.
Example:

The task is to build a machine learning model in Azure Machine Learning designer to predict automobile prices, which is a regression problem since the output (price) is a continuous numeric value. The pipeline must follow the logical data preparation, training, and evaluation flow as outlined in the Microsoft Azure AI Fundamentals (AI-900) study guide and Microsoft Learn module "Create a machine learning model with Azure Machine Learning designer." Here's the correct sequence and reasoning:
* Select Columns in Dataset:The first step after loading the raw automobile dataset is to choose the relevant columns that will be used as features (inputs) and the label (output). This module ensures that only necessary fields (for example, horsepower, engine size, mileage, etc.) are used to train the model while excluding irrelevant columns like vehicle ID or serial number.
* Split Data:Next, the cleaned and filtered dataset must be split into two subsets: training data and testing data (often 70/30 or 80/20). This allows the model to be trained on one portion and evaluated on the other to measure predictive accuracy.
* Linear Regression:Since automobile price prediction is a numeric prediction task, the appropriate learning algorithm is Linear Regression. This supervised algorithm learns relationships between numeric features and the target (price).
Finally, the workflow connects the training data and Linear Regression module to the Train Model module, which outputs a trained regression model. The trained model is then linked to the Score Model module to compare predicted vs. actual prices.
This pipeline fully aligns with Microsoft's recommended process for regression in Azure ML Designer.

Explanation:
Statement
Yes / No
Providing an explanation of the outcome of a credit loan application is an example of the Microsoft transparency principle for responsible AI.
Yes
A triage bot that prioritizes insurance claims based on injuries is an example of the Microsoft reliability and safety principle for responsible AI.
Yes
An AI solution that is offered at different prices for different sales territories is an example of the Microsoft inclusiveness principle for responsible AI.
No
This question is based on the Responsible AI principles defined by Microsoft, which are part of the AI-900 Microsoft Azure AI Fundamentals curriculum. Microsoft's Responsible AI framework consists of six key principles: Fairness, Reliability and Safety, Privacy and Security, Inclusiveness, Transparency, and Accountability. Each principle ensures that AI systems are developed and used in a way that benefits people and society responsibly.
* Transparency Principle - YesProviding an explanation for a loan decision aligns with the Transparency principle. Microsoft defines transparency as helping users and stakeholders understand how AI systems make decisions. For example, when a credit scoring AI model approves or denies a loan, explaining the factors that influenced that outcome (such as credit history or income level) ensures that customers understand the reasoning process. This builds trust and supports responsible deployment.
* Reliability and Safety Principle - YesA triage bot that prioritizes insurance claims based on injury severity relates directly to Reliability and Safety. This principle ensures AI systems operate consistently, perform accurately, and produce dependable outcomes. In the case of the triage bot, it must reliably assess the input data (injury descriptions) and rank claims appropriately to avoid harm or misjudgment, aligning with Microsoft's emphasis on designing AI systems that are safe and robust.
* Inclusiveness Principle - NoAn AI solution priced differently across sales territories is not related to Inclusiveness. Inclusiveness focuses on ensuring accessibility and eliminating bias or exclusion for all users-especially those with disabilities or underrepresented groups. Pricing strategy is a business decision, not an inclusiveness issue. Therefore, this statement is No.
In summary, based on the AI-900 Responsible AI principles, the correct selections are:

According to the Microsoft Azure AI Fundamentals (AI-900) Official Study Guide and the Microsoft Learn module "Explore fundamental principles of machine learning," anomaly detection is a specialized machine learning technique used to identify data points, patterns, or events that deviate significantly from normal behavior.
Anomaly detection is widely used for monitoring time-series data and detecting unexpected or rare occurrences that may indicate problems, opportunities, or fraud. For example:
* Detecting fraudulent transactions in banking systems.
* Identifying equipment malfunctions in industrial IoT applications.
* Monitoring network intrusions in cybersecurity.
* Detecting unexpected spikes or drops in web traffic or sales.
In Azure, this workload is supported by the Azure AI Anomaly Detector service, which uses statistical and machine learning algorithms to learn from historical data and establish a baseline of normal behavior. When the system detects data points that fall outside expected patterns, it flags them as anomalies.
Let's evaluate the incorrect options:
* A. A machine learning technique that understands written and spoken language # This describes Natural Language Processing (NLP), not anomaly detection.
* B. A machine learning technique that classifies objects based on user-supplied images # This refers to image classification, typically using computer vision.
* D. A machine learning technique that classifies images based on their contents # Also describes computer vision, not anomaly detection.
Therefore, the correct answer is C, since anomaly detection specifically refers to analyzing data over time and identifying unusual or abnormal patterns that differ from the expected trend.

According to the Microsoft Azure AI Fundamentals (AI-900) Official Study Guide and the Microsoft Learn module "Explore natural language processing (NLP) in Azure," sentiment analysis is a core natural language processing (NLP) workload used to determine the emotional tone or attitude expressed in a piece of text. It helps identify whether a statement, review, or comment conveys a positive, negative, neutral, or mixed sentiment.
In this question, the scenario involves analyzing customer reviews and determining how positive or negative each review is. This directly aligns with sentiment analysis, which evaluates subjective text and quantifies the expressed opinion. In Azure, this workload is implemented through the Azure AI Language service (formerly Text Analytics API), where the Sentiment Analysis feature assigns a sentiment score to text inputs and classifies them accordingly.
For example:
* "I love this product!" # Positive sentiment
* "It's okay, but could be better." # Neutral or mixed sentiment
* "I'm disappointed with the service." # Negative sentiment
Let's analyze why the other options are incorrect:
* A. Language detection: Identifies which language (e.g., English, Spanish, French) the text is written in.
It doesn't measure positivity or negativity.
* C. Key phrase extraction: Identifies the main topics or keywords in text (e.g., "battery life," "customer support"), not the emotion.
* D. Entity recognition: Detects and categorizes specific entities such as people, locations, organizations, or dates within the text.
Therefore, based on Microsoft's AI-900 syllabus and Azure AI Language documentation, the workload that analyzes text to determine positive or negative opinions is Sentiment Analysis (Option B). This capability is widely used in customer feedback analysis, brand monitoring, and social media analytics to understand public perception and improve business decisions.

According to the Microsoft Azure AI Fundamentals (AI-900) official study guide and Microsoft Learn modules under the topic "Describe features of common AI workloads" and "Identify capabilities of Azure AI services", QnA Maker is the service designed specifically to create a knowledge base (KB) or question-and- answer bot from existing content such as FAQ documents, product manuals, support pages, or structured knowledge sources.
QnA Maker enables developers to take semi-structured text (for example, an FAQ document or webpage) and automatically generate a knowledge base of pairs of questions and corresponding answers. This knowledge base can then be connected to a chatbot, typically through the Azure Bot Service, so that users can interact with it conversationally. The key advantage is that the process does not require deep machine learning or programming expertise. The service uses natural language processing (NLP) to match user queries with the most relevant pre-defined answers in the knowledge base.
In the AI-900 curriculum, this falls under the Conversational AI workload-creating intelligent bots that can respond naturally to user questions. Microsoft's training content explains that "QnA Maker extracts pairs of question and answer from your content and builds a knowledge base that can be queried by bots and other applications." The output, as shown in the example diagram, demonstrates how user input (the question) triggers a request to the QnA Maker API, which returns a JSON response containing the best-matched answer.
The other options are not correct because:
* B. Language Understanding (LUIS) is used to interpret user intent and extract entities, not to create FAQs.
* C. Text Analytics performs text extraction, sentiment analysis, and key-phrase detection but does not build a Q&A knowledge base.
* D. Speech handles speech-to-text or text-to-speech, not Q&A matching.
Therefore, per the AI-900 study guide and Microsoft Learn, the verified and correct answer is A. QnA Maker.