AI-102 Free Practice Test

- (Topic 3)
You need to upload speech samples to a Speech Studio project. How should you upload the samples?

1. A. Combine the speech samples into a single audio file in the .wma format and upload the file.
2. B. Upload a .zip file that contains a collection of audio files in the .wav format and a corresponding text transcript file.
3. C. Upload individual audio files in the FLAC format and manually upload a correspondingtranscript in Microsoft Word format.
4. D. Upload individual audio files in the .wma format.

Correct Answer: B
To upload your data, navigate to the Speech Studio . From the portal, click Upload data to launch the wizard and create your first dataset. You'll be asked to select a speech data type for your dataset, before allowing you to upload your data.
The default audio streaming format is WAV
Use this table to ensure that your audio files are formatted correctly for use with Custom Speech:

Reference:
https://docs.microsoft.com/en-us/azure/cognitive-services/speech-service/how-to-custom-speech-test-and-train

- (Topic 3)
You need to measure the public perception of your brand on social media messages. Which Azure Cognitive Services service should you use?

1. A. Text Analytics
2. B. Content Moderator
3. C. Computer Vision
4. D. Form Recognizer

Correct Answer: A
Text Analytics Cognitive Service could be used to quickly determine the public perception for a specific topic, event or brand.
Example: A NodeJS app which pulls Tweets from Twitter using the Twitter API based on a specified search term. Then pass these onto Text Analytics for sentiment scoring before storing the data and building a visualisation in PowerBI. The Architecture looked something like this:

Reference:
https://www.linkedin.com/pulse/measuring-public-perception-azure-cognitive-services- steve-dalai

- (Topic 3)
You have an Azure subscription that contains an Azure App Service app named Appl. You provision a multi-service Azure Cognitive Services resource named CSAccount1.
You need to configure App1 to access CSAccount1. The solution must minimize administrative effort.
What should you use to configure App1?

1. A. a system-assigned managed identity and an X.509 certificate
2. B. the endpoint URI and an OAuth token
3. C. the endpoint URI and a shared access signature (SAS) token
4. D. the endpoint URI and subscription key

Correct Answer: D

- (Topic 2)
You are developing the knowledgebase by using Azure Cognitive Search.
You need to meet the knowledgebase requirements for searching equivalent terms. What should you include in the solution?

1. A. a synonym map
2. B. a suggester
3. C. a custom analyzer
4. D. a built-in key phrase extraction skill

Correct Answer: A
Within a search service, synonym maps are a global resource that associate equivalent terms, expanding the scope of a query without the user having to actually provide the term. For example, assuming "dog", "canine", and "puppy" are mapped synonyms, a query on "canine" will match on a document containing "dog".
Create synonyms: A synonym map is an asset that can be created once and used by many indexes.
Reference:
https://docs.microsoft.com/en-us/azure/search/search-synonyms

HOTSPOT - (Topic 3)
You are creating an enrichment pipeline that will use Azure Cognitive Search. The knowledge store contains unstructured JSON data and scanned PDF documents that contain text.
Which projection type should you use for each data type? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Solution:
Box 1: Object projection
Object projections are JSON representations of the enrichment tree that can be sourced from any node.
Box 2: File projection
File projections are similar to object projections and only act on the normalized_images collection.

Does this meet the goal?

1. A. Yes
2. B. No

Correct Answer: A