AI-102 practice questions 81–90

1. Question 81 · 328 in bank

   HOTSPOT - You are developing the shopping on-the-go project. You are configuring access to the QnA Maker (classic) resources. Which role should you assign to AllUsers and LeadershipTeam? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point. Hot Area:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   Box 1: QnA Maker Editor - Scenario: Provide all employees with the ability to edit Q&As. The QnA Maker Editor (read/write) has the following permissions: ✑ Create KB API ✑ Update KB API ✑ Replace KB API ✑ Replace Alterations ✑ "Train API" [in new service model v5] Box 2: Contributor - Scenario: Only senior managers must be able to publish updates. Contributor permission: All except ability to add new members to roles Reference: https://docs.microsoft.com/en-us/azure/cognitive-services/qnamaker/reference-role-based-access-control

   Source: Adapted from community discussion — SuperPetey

   References

   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn

   

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2. Question 82 · 328 in bank

   HOTSPOT - You are developing the shopping on-the-go project. You need to build the Adaptive Card for the chatbot. How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point. Hot Area:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   Box 1: name.en - Box 2: "$when": "${stockLevel != 'OK'}" Product displays must include images and warnings when stock levels are low or out of stock. Box 3:image.altText.en

   Source: Adapted from community discussion — james2033

   

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3. Question 83 · 328 in bank

   HOTSPOT - You are developing an application that will use the Computer Vision client library. The application has the following code.

   

   For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point. Hot Area:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   Box 3 should be Yes, a stream is only a pathway for data. and in this case the data actually comes from a local file. The correct answer would be No, Yes, Yes.

   Source: Adapted from community discussion — Adedoyin_Simeon

   References

   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn

   

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4. Question 84 · 328 in bank

   You have an Azure Video Analyzer for Media (previously Video Indexer) service that is used to provide a search interface over company videos on your company's website. You need to be able to search for videos based on who is present in the video. What should you do?

   • ACreate a person model and associate the model to the videos.
   • BCreate person objects and provide face images for each object.
   • CInvite the entire staff of the company to Video Indexer.
   • DEdit the faces in the videos.
   • EUpload names to a language model.

   Show answer

   Answer: A

   Explanation

   A is the answer. https://learn.microsoft.com/en-us/azure/azure-video-indexer/customize-person-model-overview Azure Video Indexer supports celebrity recognition in your videos. The celebrity recognition feature covers approximately one million faces based on commonly requested data source such as IMDB, Wikipedia, and top LinkedIn influencers. Faces that are not recognized by Azure Video Indexer are still detected but are left unnamed. Customers can build custom Person models and enable Azure Video Indexer to recognize faces that are not recognized by default. Customers can build these Person models by pairing a person's name with image files of the person's face.

   Source: Adapted from community discussion — zellck

   References

   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn

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5. Question 85 · 328 in bank

   Select 2

   You use the Custom Vision service to build a classifier. After training is complete, you need to evaluate the classifier. Which two metrics are available for review? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

   • Arecall
   • BF-score
   • Cweighted accuracy
   • Dprecision
   • Earea under the curve (AUC)

   Show answer

   Answer: AD

   Explanation

   AD is the answer. https://learn.microsoft.com/en-us/azure/cognitive-services/custom-vision-service/getting-started-build-a-classifier#evaluate-the-classifier After training has completed, the model's performance is estimated and displayed. The Custom Vision Service uses the images that you submitted for training to calculate precision and recall. Precision and recall are two different measurements of the effectiveness of a classifier: - Precision indicates the fraction of identified classifications that were correct. For example, if the model identified 100 images as dogs, and 99 of them were actually of dogs, then the precision would be 99%. - Recall indicates the fraction of actual classifications that were correctly identified. For example, if there were actually 100 images of apples, and the model identified 80 as apples, the recall would be 80%.

   Source: Adapted from community discussion — zellck

   References

   • Microsoft Learn
   • Microsoft Learn

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6. Question 86 · 328 in bank

   DRAG DROP - You are developing a call to the Face API. The call must find similar faces from an existing list named employeefaces. The employeefaces list contains 60,000 images. How should you complete the body of the HTTP request? To answer, drag the appropriate values to the correct targets. Each value may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point. Select and Place:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   Box 1: LargeFaceListID - LargeFaceList: Add a face to a specified large face list, up to 1,000,000 faces. Note: Given query face's faceId, to search the similar-looking faces from a faceId array, a face list or a large face list. A "faceListId" is created by FaceList - Create containing persistedFaceIds that will not expire. And a "largeFaceListId" is created by LargeFaceList - Create containing persistedFaceIds that will also not expire. Incorrect Answers: Not "faceListId": Add a face to a specified face list, up to 1,000 faces. Box 2: matchFace - Find similar has two working modes, "matchPerson" and "matchFace". "matchPerson" is the default mode that it tries to find faces of the same person as possible by using internal same-person thresholds. It is useful to find a known person's other photos. Note that an empty list will be returned if no faces pass the internal thresholds. "matchFace" mode ignores same-person thresholds and returns ranked similar faces anyway, even the similarity is low. It can be used in the cases like searching celebrity-looking faces. Reference: https://docs.microsoft.com/en-us/rest/api/faceapi/face/findsimilar

   Source: Adapted from community discussion — Eltooth

   References

   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn

   

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7. Question 87 · 328 in bank

   DRAG DROP - You are developing a photo application that will find photos of a person based on a sample image by using the Face API. You need to create a POST request to find the photos. How should you complete the request? To answer, drag the appropriate values to the correct targets. Each value may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point. Select and Place:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   findsimilars and matchPerson https://docs.microsoft.com/en-us/rest/api/faceapi/face/find-similar?tabs=HTTP#find-similar-results-example "matchPerson" is the default mode that it tries to find faces of the same person as possible by using internal same-person thresholds. It is useful to find a known person's other photos. Note that an empty list will be returned if no faces pass the internal thresholds. "matchFace" mode ignores same-person thresholds and returns ranked similar faces anyway, even the similarity is low. It can be used in the cases like searching celebrity-looking faces.

   Source: Adapted from community discussion — Eltooth

   References

   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn

   

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8. Question 88 · 328 in bank

   HOTSPOT - You develop a test method to verify the results retrieved from a call to the Computer Vision API. The call is used to analyze the existence of company logos in images. The call returns a collection of brands named brands. You have the following code segment.

   

   For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point. Hot Area:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   Box 1: Yes - Box 2: Yes - Coordinates of a rectangle in the API refer to the top left corner. Box 3: No - Reference: https://docs.microsoft.com/en-us/azure/cognitive-services/computer-vision/concept-brand-detection

   Source: Adapted from community discussion — M25

   References

   • Microsoft Learn
   • Microsoft Learn

   

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9. Question 89 · 328 in bank

   HOTSPOT - You develop an application that uses the Face API. You need to add multiple images to a person group. How should you complete the code? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point. Hot Area:

   

   This is an interactive task on the real exam — a drag-and-drop, hotspot or ordering question. There is nothing to select here, so the answer is shown below for reference.

   Show the answer figure

   Answer: See figure below

   Explanation

   Parallel.For(0, PersonCount, async i => { Guid personId = persons[i].PersonId; string personImageDir = @"/path/to/person/i/images"; foreach (string imagePath in Directory.GetFiles(personImageDir, "*.jpg")) { await WaitCallLimitPerSecondAsync(); using (Stream stream = File.OpenRead(imagePath)) { await faceClient.PersonGroupPerson.AddFaceFromStreamAsync(personGroupId, personId, stream); } } }); https://docs.microsoft.com/en-us/azure/cognitive-services/face/face-api-how-to-topics/how-to-add-faces

   Source: Adapted from community discussion — Happiness20

   References

   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn
   • Microsoft Learn

   

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10. Question 90 · 328 in bank

    Your company uses an Azure Cognitive Services solution to detect faces in uploaded images. The method to detect the faces uses the following code.

    

    You discover that the solution frequently fails to detect faces in blurred images and in images that contain sideways faces. You need to increase the likelihood that the solution can detect faces in blurred images and images that contain sideways faces. What should you do?

    • AUse a different version of the Face API.
    • BUse the Computer Vision service instead of the Face service.
    • CUse the Identify method instead of the Detect method.
    • DChange the detection model.

    Show answer

    Answer: D

    Explanation

    D is the answer. https://learn.microsoft.com/en-us/azure/cognitive-services/computer-vision/how-to/specify-detection-model#evaluate-different-models The different face detection models are optimized for different tasks. - detection_02 Improved accuracy on small, side-view, and blurry faces.

    Source: Adapted from community discussion — zellck

    References

    • Microsoft Learn
    • Microsoft Learn

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AI-102 practice, question 81. 328 questions available.