AI-103 Practice Exam 1 — 20 Questions

Question 1

Your enterprise application uses Custom Vision. Due to compliance policies, you must ensure that your training data and model endpoints reside within a specific Azure region with strict data residency guarantees. Which resource configuration should you use?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Create a Custom Vision training and prediction resource in the targeted Azure region.. Custom Vision resources must be created in an Azure region that supports Custom Vision, and data remains within that region. Using a Cognitive Services multi-service resource or regional Custom Vision resource ensures regional residency.

Answer

Use the Global resource endpoint for Custom Vision.

Answer

Use Azure AI Vision multi-service account with global routing.

Answer

Store images in Azure Blob Storage with geo-replication.

Question 2

You are designing a multimodal solution that combines Azure AI Vision dense captions with Azure OpenAI GPT-4 Vision. You want to extract precise bounding box coordinates for multiple objects in complex scenes and pass them as structured context. Which API feature should you invoke?

Accepted Answer

features=denseCaptions. Dense captions return a set of regional bounding boxes and corresponding descriptive text snippets.

Answer

features=objects

Answer

features=smartCrops

Answer

features=tags

Question 3

Your application uploads images to Azure AI Vision via URLs. One of your URLs is failing with an invalid image error, even though the image opens correctly in web browsers. What is the most likely reason?

Accepted Answer

The URL requires HTTP Basic Authentication or redirects that the vision service cannot resolve.. Azure AI Vision must be able to publicly access the URL without authentication barriers (like cookies, redirects, or private IP spaces).

Answer

Azure AI Vision does not support URL-based inputs; you must upload binary bytes.

Answer

The image file size exceeds 500 MB.

Answer

Image URLs are restricted to PNG format only.

Question 4

You are using Azure AI Vision Read API in your application. You want to ensure that the extracted text blocks return word-level bounding polygons rather than just line-level bounding boxes. What parameter or response structure should you examine?

Accepted Answer

Examine the 'words' array within each returned 'lines' object in the JSON response payload.. The Read API response structure automatically includes word-level details inside each line object (`lines[*].words[*]`), providing bounding polygons for both lines and individual words.

Answer

Add ?wordLevel=true to the query string.

Answer

Call the legacy OCR endpoint instead.

Answer

Set the model-version parameter to v2.0.

Question 5

Your company wants to generate descriptive captions for thousands of product images automatically using Azure AI Vision. Which visual feature parameter should you specify in the analyze request?

Accepted Answer

features=caption. The 'captions' visual feature extracts a human-readable sentence describing the image content.

Answer

features=read

Answer

features=smartCrops

Answer

features=objects

Question 6

You are using Azure AI Vision 4.0. You want to obtain a concise, single-sentence human-readable description of an image. Which feature parameter should you request?

Accepted Answer

features=caption. The 'caption' feature returns a single descriptive sentence about the image content.

Answer

features=tags

Answer

features=denseCaptions

Answer

features=read

Question 7

You are building an agent using Azure AI Agent Service that needs to maintain long-term conversational memory across multiple sessions with a user. Which feature should you utilize to store and retrieve past user interactions?

Accepted Answer

Agent threads and message history APIs. Azure AI Agent Service provides built-in thread management where conversation histories are stored and persisted across sessions.

Answer

Azure Cache for Redis with session state middleware

Answer

Azure Cosmos DB vector search collections

Answer

Azure AI Search index vector store

Question 8

You want to detect whether corporate logos appear in user-submitted images using Azure AI Vision. Which visual feature parameter should you request?

Accepted Answer

features=brands. The 'brands' visual feature detects known commercial brands and logos in an image.

Answer

features=domain-specific

Answer

features=objects

Answer

features=tags

Question 9

You are using Document Intelligence Studio to build a custom extraction model. You need to verify the model quality before deploying. Which metric is most critical?

Accepted Answer

F1 Score. The F1 score provides a balance between precision and recall, serving as the primary indicator of model quality.

Answer

Recall only

Answer

Precision only

Answer

Model ID

Question 10

Which TWO metrics are reported by Document Intelligence Studio to evaluate model performance?

Accepted Answer

Recall. Precision and Recall are the core metrics provided for every field in a custom model.

Answer

Throughput

Answer

Latencey

Answer

Confidence score

Question 11

You are deploying a Custom Vision object detection model as a Docker container on an Azure Kubernetes Service (AKS) cluster. During load testing, you notice high memory consumption and container restarts. Which configuration setting in the deployment manifest should you review to ensure stability?

Accepted Answer

Kubernetes resource requests and limits for memory and CPU.. Custom Vision container deployments require proper CPU and memory limits/requests configured in the Kubernetes pod spec to prevent Out-Of-Memory (OOM) kills during heavy inference workloads.

Answer

Billing endpoint URL syntax.

Answer

Azure Blob Storage connection string persistence.

Answer

Custom Vision iteration publishing name environment variable.

Question 12

You are building a content moderation pipeline. You need to detect if user-uploaded images contain adult content, racy content, or gore using Azure AI Vision. Which feature should you include?

Accepted Answer

features=adult. The 'image-analysis' safety analysis includes detection for adult, racy, and gory content.

Answer

features=safety

Answer

features=moderation

Answer

features=image-analysis safety check

Question 13

Which HTTP status code does the Azure AI Vision Read API return upon successfully initiating an asynchronous OCR analysis job?

Accepted Answer

202 Accepted. Asynchronous operations in Azure AI Services return HTTP 202 Accepted when the request has been accepted for processing.

Answer

204 No Content

Answer

200 OK

Answer

201 Created

Question 14

You are developing a mobile application that captures business card photos and extracts contact information. Which Azure AI Vision feature is specifically designed to extract printed and handwritten text lines and words?

Accepted Answer

Read. The Read feature is Azure AI Vision's optical character recognition (OCR) tool for extracting printed and handwritten text.

Answer

Image Tagging

Answer

Dense Captions

Answer

Brand Detection

Question 15

You are using Custom Vision to train an object detection model. You want to evaluate model performance before publishing an iteration. Which metric represents the overall accuracy of the model across all classes at various confidence thresholds?

Accepted Answer

Mean Average Precision (mAP). Mean Average Precision (mAP) is the standard metric used in Custom Vision and object detection to evaluate overall model accuracy.

Answer

Perplexity

Answer

Word Error Rate (WER)

Answer

BLEU Score

Question 16

You need to programmatically delete an iteration of a Custom Vision model that performed poorly. Which API method should you invoke?

Accepted Answer

DELETE /customvision/v3.3/Training/{projectId}/iterations/{iterationId}. Deleting an iteration in Custom Vision is performed via a DELETE request on the Training API iteration endpoint.

Answer

PUT /customvision/v3.3/Training/{projectId}/iterations/{iterationId}

Answer

GET /customvision/v3.3/Training/{projectId}/iterations/{iterationId}/purge

Answer

POST /customvision/v3.3/Training/{projectId}/iterations/{iterationId}/delete

Question 17

You are using Custom Vision and want to programmatically publish a trained iteration so that prediction endpoints can use it. Which API operation should you call?

Accepted Answer

POST /customvision/v3.3/Training/{projectId}/iterations/{iterationId}/publish. Publishing an iteration in Custom Vision requires calling the publish iteration endpoint with the published name and prediction resource ID.

Answer

GET /customvision/v3.3/Training/{projectId}/iterations/{iterationId}/make-default

Answer

PUT /customvision/v3.3/Prediction/{projectId}/iterations/{iterationId}/activate

Answer

PATCH /customvision/v3.3/Training/{projectId}/projects/{projectId}

Question 18

You are examining the metadata of an image analysis result from Azure AI Vision 4.0. Which property contains the dimensions (width and height) of the analyzed image?

Accepted Answer

metadata. The image metadata object in the API response contains `width` and `height` properties representing the pixel dimensions of the submitted image.

Answer

dimensions

Answer

modelVersion

Answer

requestId

Question 19

Your application calls Azure AI Vision API and receives an HTTP 429 Too Many Requests response. What does this error signify, and how should your application handle it?

Accepted Answer

You have exceeded your pricing tier rate limits. Implement exponential backoff and retry the request.. HTTP 429 indicates rate limiting (quota exceeded). The application should implement exponential backoff and retry the request.

Answer

The service is undergoing maintenance. Fail over to a secondary region.

Answer

The image file format is unsupported. Convert to PNG.

Answer

Your API key is invalid. Refresh your subscription key immediately.

Question 20

You are deploying a Custom Vision model as a Docker container. You need to verify that the container is running and healthy before routing production traffic to it. Which health check endpoint should your load balancer ping?

Accepted Answer

/ready. Cognitive Services containers provide a standard liveness/readiness health check endpoint at `/live` or `/ready` depending on container configuration.

Answer

/status

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/ping

Answer

/health