AI-102 Practice Question: Implement natural language processing solutions
You are a solution architect at a media company. The company uses Azure AI Speech to generate subtitles for videos. The current solution uses the batch transcription API and takes several hours to process a 1-hour video. The business requires near-real-time subtitles for live streaming events. You need to design a new solution that provides low-latency transcription. You have the following options:
Option A: Use the batch transcription API with a higher priority queue.
Option B: Use the Speech-to-text REST API for real-time streaming with the Speech SDK.
Option C: Use the Azure AI Language API to transcribe audio from a file.
Option D: Use Azure AI Video Indexer to generate subtitles.
⚠ Common exam trap
Candidates often confuse the batch transcription API's priority queues with real-time performance, or mistakenly think the Azure AI Language API can handle speech-to-text tasks, when it is strictly a text-based NLP service.
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
✓
Option B
The Speech-to-text REST API with the Speech SDK supports real-time streaming transcription, which provides low-latency results suitable for live streaming events. Unlike the batch transcription API, which processes audio asynchronously and can take hours, the streaming API processes audio chunks in near-real-time, returning partial and final results with sub-second latency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Option C
Why it's wrong here
Azure AI Language does not transcribe audio.
- ✓
Option B
Why this is correct
Speech SDK with real-time streaming provides low-latency transcription.
- ✗
Option D
Why it's wrong here
Video Indexer is for indexing, not real-time streaming.
- ✗
Option A
Why it's wrong here
Batch transcription is not near-real-time.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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