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Microsoft AI-900 Practice Test - Questions Answers, Page 2

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Question 11

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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?

Select Columns in Dataset
Select Columns in Dataset
Add Rows
Add Rows
Split Data
Split Data
Join Data
Join Data
Suggested answer: C
Explanation:

A common way of evaluating a model is to divide the data into a training and test set by using Split Data, and then validate the model on the training data. Use the Split Data module to divide a dataset into two distinct sets. The studio currently supports training/validation data splits

Reference:

https://docs.microsoft.com/en-us/azure/machine-learning/how-to-configure-cross-validation-data-splits2

asked 26/09/2024
Kodjo Boessi
38 questions

Question 12

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You have the Predicted vs. True chart shown in the following exhibit.

Microsoft AI-900 image Question 12 84242 09262024174219000000

Which type of model is the chart used to evaluate?

classification
classification
regression
regression
clustering
clustering
Suggested answer: B
Explanation:

What is a Predicted vs. True chart?

Predicted vs. True shows the relationship between a predicted value and its correlating true value for a regression problem. This graph can be used to measure performance of a model as the closer to the y=x line the predicted values are, the better the accuracy of a predictive model.

Reference:

https://docs.microsoft.com/en-us/azure/machine-learning/how-to-understand-automated-m

asked 26/09/2024
Arkadiusz Skopinski
48 questions

Question 13

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Which type of machine learning should you use to predict the number of gift cards that will be sold next month?

classification
classification
regression
regression
clustering
clustering
Suggested answer: B
Explanation:

In the most basic sense, regression refers to prediction of a numeric target.

Linear regression attempts to establish a linear relationship between one or more independent variables and a numeric outcome, or dependent variable.

You use this module to define a linear regression method, and then train a model using a labeled dataset. The trained model can then be used to make predictions.

Reference:

https://docs.microsoft.com/en-us/azure/machine-learning/studio-module-reference/linear-regression

asked 26/09/2024
C/1094 WOLOGUEDE COTONOU – BENIN NDENDE
40 questions

Question 14

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You have a dataset that contains information about taxi journeys 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?

the number of taxi journeys in the dataset
the number of taxi journeys in the dataset
the trip distance of individual taxi journeys
the trip distance of individual taxi journeys
the fare of individual taxi journeys
the fare of individual taxi journeys
the trip ID of individual taxi journeys
the trip ID of individual taxi journeys
Suggested answer: B
Explanation:

The label is the column you want to predict. The identified Featuresare the inputs you give the model to predict the Label. Example:

The provided data set contains the following columns:

vendor_id: The ID of the taxi vendor is a feature. rate_code: The rate type of the taxi trip is a feature. passenger_count: The number of passengers on the trip is a feature. trip_time_in_secs: The amount of time the trip took. You want to predict the fare of the trip before the trip is completed. At that moment, you don't know how long the trip would take. Thus, the trip time is not a feature and you'll exclude this column from the model. trip_distance: The distance of the trip is a feature.

payment_type: The payment method (cash or credit card) is a feature. fare_amount: The total taxi fare paid is the label.

Reference:

https://docs.microsoft.com/en-us/dotnet/machine-learning/tutorials/predict-prices

asked 26/09/2024
Ilias Akarkach
43 questions

Question 15

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You need to predict the sea level in meters for the next 10 years.

Which type of machine learning should you use?

classification
classification
regression
regression
clustering
clustering
Suggested answer: C
asked 26/09/2024
Farshin Golpad
41 questions

Question 16

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Which service should you use to extract text, key/value pairs, and table data automatically from scanned documents?

Form Recognizer
Form Recognizer
Text Analytics
Text Analytics
Language Understanding
Language Understanding
Custom Vision
Custom Vision
Suggested answer: A
Explanation:

Accelerate your business processes by automating information extraction. Form Recognizer applies advanced machine learning to accurately extract text, key/value pairs, and tables from documents. With just a few samples, Form Recognizer tailors its understanding to your documents, both on-premises and in the cloud. Turn forms into usable data at a fraction of the time and cost, so you can focus more time acting on the information rather than compiling it.

Reference:

https://azure.microsoft.com/en-us/services/cognitive-services/form-recognizer/

asked 26/09/2024
Neil Mallia
55 questions

Question 17

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You use Azure Machine Learning designer to publish an inference pipeline.

Which two parameters should you use to access the web service? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

the model name
the model name
the training endpoint
the training endpoint
the authentication key
the authentication key
the REST endpoint
the REST endpoint
Suggested answer: C, D
Explanation:

You can consume a published pipeline in the Published pipelines page. Select a published pipeline and find the REST endpoint of it.

To consume the pipeline, you need:

The REST endpoint for your service

The Primary Key for your service

Reference:

https://docs.microsoft.com/en-in/learn/modules/create-regression-model-azure-machine-learning-designer/deploy-service

asked 26/09/2024
Ruben Dallibor
33 questions

Question 18

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A medical research project uses a large anonymized dataset of brain scan images that are categorized into predefined brain haemorrhage types. You need to use machine learning to support early detection of the different brain haemorrhage types in the images before the images are reviewed by a person. This is an example of which type of machine learning?

clustering
clustering
regression
regression
classification
classification
Suggested answer: C
Explanation:

Reference: https://docs.microsoft.com/en-us/learn/modules/create-classification-model-azure-machine-learning-designer/introduction

asked 26/09/2024
James Younger
42 questions

Question 19

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When training a model, why should you randomly split the rows into separate subsets?

to train the model twice to attain better accuracy
to train the model twice to attain better accuracy
to train multiple models simultaneously to attain better performance
to train multiple models simultaneously to attain better performance
to test the model by using data that was not used to train the model
to test the model by using data that was not used to train the model
Suggested answer: C
asked 26/09/2024
Rehan Malik
54 questions

Question 20

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You are evaluating whether to use a basic workspace or an enterprise workspace in Azure Machine Learning. What are two tasks that require an enterprise workspace? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

Use a graphical user interface (GUI) to run automated machine learning experiments.
Use a graphical user interface (GUI) to run automated machine learning experiments.
Create a compute instance to use as a workstation.
Create a compute instance to use as a workstation.
Use a graphical user interface (GUI) to define and run machine learning experiments from Azure Machine Learning designer.
Use a graphical user interface (GUI) to define and run machine learning experiments from Azure Machine Learning designer.
Create a dataset from a comma-separated value (CSV) file.
Create a dataset from a comma-separated value (CSV) file.
Suggested answer: A, C
Explanation:

Note: Enterprise workspaces are no longer available as of September 2020. The basic workspace now has all the functionality of the enterprise workspace.

Reference: https://www.azure.cn/en-us/pricing/details/machine-learning/ https://docs.microsoft.com/en-us/azure/machine-learning/concept-workspace

asked 26/09/2024
Aidan Lear
53 questions
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