AI-102 Implement computer vision solutions Practice Question
You need to analyze videos stored in Azure Blob Storage to detect objects and generate timestamps. Which Azure service should you use?
⚠ Common exam trap
A common mix-up: candidates confuse Azure Computer Vision (image analysis) with video analysis, overlooking that Computer Vision lacks native video processing and timestamp generation, while Video Indexer is the dedicated service for end-to-end video insights.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Video Indexer
Azure Video Indexer (D) is the correct choice because it is specifically designed to analyze videos, extracting insights such as object detection, scene segmentation, and timestamps. It uses AI models to process video content stored in Azure Blob Storage and generates a timeline of detected objects, making it ideal for this scenario.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure Custom Vision
Why it's wrong here
For custom image models.
- ✗
Azure Form Recognizer
Why it's wrong here
For document analysis.
- ✗
Azure Computer Vision
Why it's wrong here
Primarily for images.
- ✓
Azure Video Indexer
Why this is correct
Video analysis with object detection and timestamps.
Quick reference
Azure Blob Storage Tier Comparison
| Tier | Storage Cost | Retrieval Cost | Latency | Use Case |
|---|---|---|---|---|
| Hot | Highest | Lowest | Immediate | Active data, frequent reads |
| Cool | Lower | Higher | Immediate | Data accessed < once / month |
| Cold | Lower still | Higher | Immediate | Data accessed < once / quarter |
| Archive | Lowest | Highest + rehydration delay | Hours | Long-term compliance retention |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AI-102 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AI-102 exam.