AI 900 Practice Questions 4

Which metrics can be used to evaluate a linear regression model? A. F1 Score B. ROC Curve C. RMSE D. Coefficient of Determination (R2)

C D

The Basic and Enterprise editions of Azure machine learning provide the same security features. A. True B. False

A

What sources can't you use for QnA Maker questions and answers? A. Use Azure SQL source B. Generated from an existing Web page C. Generated from an existing FAQ document D. Imported from a pre-defined chit-chat data source

A

Which service should you use to extract text, key/value pairs, and table data automatically from scanned documents? A. Form Recognizer B. Text Analytics C. Ink Recognizer D. Custom Vision

A

You need to predict the sea level in meters for the next 10 years. Which type of machine learning should you use? A. Regression B. Clustering C. Classification

A

You want to use the Computer Vision service to identify the location of individual items in an image. Which of the following features should you retrieve? A. Objects B. Categories C. Tags

A

Ensuring users are aware of the limitations of AI-based application that they are using is an example of which Responsible AI principle? A. Privacy and Security B. Transparency C. Inclusiveness D. Accountability

B

Image classification can be used for the following use cases BUT: A. Product Identification B. Object Detection C. Disaster Investigation D. Medical Diagnosis

B

The OCR API in Azure Computer vision service is used to scan newspapers and magazines. A. True B. False

B

Which metric can you use to evaluate a classification model? A. root mean squared error (RMSE) B. True positive rate C. Mean Absolute Error (MAE) D. Coefficient of Determination (R2)

B

You want to train a model that classifies images of dogs and cats based on a collection of your own digital photographs. Which Azure service should you use? A. Azure Bot Service B. Computer Vision C. Custom Vision

C

You are developing a chatbot solution in Azure. Which service should you use to determine a user's intent? A. Speech B. Language Understanding (LUIS) C. Translator Text D. QnA Maker

B

You have a frequently asked questions (FAQ) PDF file. You need to create a conversational support systems based on the FAQ. Which service should you use? A. Computer Vision B. QnA Maker C. Text Analytics D. Language Understanding (LUIS)

B

You need to develop a mobile app for employees to scan and store their expenses while travelling. Which type of computer vision should you use? A. Semantic Segmentation B. Optical Character Recognition (OCR) C. Object Detection D. Image Classification

B

You plan to use the Custom Vision service to train an image classification model. You want to create a resource that can only be used for model training, and not for prediction. Which kind of resource should you create in your Azure subscription? A. Cognitive Services B. Custom Vision C. Computer Vision

B

You train an image classification model that achieves less than satisfactory evaluation metrics. How might you improve it? A. Add a new label for "unknown" classes B. Add more images to the training set C. Reduce the size of the images used to train the model

B

You want to create a model to predict sales of ice cream based on historic data that includes daily ice cream sales totals and weather measurements. Which Azure service should you use? A. Text Analytics B. Azure Machine Learning C. QnA Maker

B

You want to use the Computer Vision service to analyze images of locations and identify well-known buildings? What should you do? A. Retrieve the categories for the image, specifying the celebrities domain. B. Retrieve the categories for the image, specifying the landmarks domain. C. Retrieve the objects in the image.

B

You want to use the Computer Vision service to analyze images. You also want to use the Text Analytics service to analyze text. You want developers to require only one key and endpoint to access all of your services. What kind of resources should you create in your Azure subscription? A. Computer Vision B. Cognitive Services C. Custom Vision

B

Which two components can you drag onto a canvas in Azure Machine Learning designer? Each correct answer presents a complete solution. A. Pipeline B. Dataset C. Compute D. Module

B D

You use Azure Machine Learning designer to publish an inference pipeline. Which two parameters should you use to consume the pipeline? Each correct answer presents part of the solution. A. the training endpoint B. the model name C. the authentication key D. the REST endpoint

B D

An automated dealership wants to use historic car sales data to train a machine learning model. The model should predict the price of a pre-owned car based on its make, model, engine size and mileage. What kind of machine learning model should the dealership use automated machine learning to create? A. Classification B. Time series forecasting C. Regression

C

For machine learning progress, how should you split data for training and evaluation? A. Use features for training and labels for evaluation B. Randomly split the data into columns for training and columns for evaluation C. Randomly split the data into rows for training and rows for evaluations D. Use labels for training and features for evaluation

C

What are Pipelines used for? A. Data scientists use pipelines for data classification and modelling B. Data ingestion and modelling C. Orchestration of model training, deployment and management D. Cloud-based storage and compute service offering auto-ML capability to AI engineers

C

Which type of machine learning should you use to predict the number of gift cards that will be sold next month? A. Clustering B. Classification C. Regression

C

You are developing a solution that uses the Test Analytics service. You need to identify the main talking points in a collection of documents. Which type of natural language processing should you use? A. Sentiment Analysis B. Language Detection C. Key Phrase Extraction D. Entity Recognition

C

You have a dataset that contains information about taxi journey that occurred during a given period. You need to train a model to predict the fare of a taxi journey. What should you use as a feature? A. The fare of individual taxi journeys B. The trip ID of individual taxi journeys C. The trip distance of individual taxi journeys D. The number of taxi journeys in the dataset

C

A bank wants to use historic loan repayment records to categorize loan applications as low-risk or high-risk based on characteristics like the loan amount, the income of the borrower, and the loan period. What kind of machine learning model should the dealership use automated machine learning to create? A. Regression B. Computer Vision C. Time Series Forecasting D. Classification

D

You are designing an AI system that empowers everyone, including people who have hearing, visual, and other impairments. This is an example of which Microsoft guiding principle for responsible AI? A. Fairness B. Accountability C. Reliability and Safety D. Inclusiveness

D

You build a machine learning model by using the automate machine learning user interface (UI). You need to ensure that the model meets the Microsoft transparency principle for responsible AI. What should you do? A. Set Validation type to Auto B. Set Primary metric to accuracy C. Set Max concurrent iterations to 0 D. Enable Explain best model

D

You need to create a training dataset and validation dataset from an existing dataset. Which module in the Azure Machine Learning designer should you use? A. Select Columns in Dataset B. Join Data C. Add Rows D. Split Data

D