AI-102 Practice Question: Implement natural language processing solutions
Network Topology
Refer to the exhibit. You have created a Text Analytics resource and retrieved its keys. You want to use the key1 to call the Sentiment Analysis API from a Python application. Which endpoint URL should you use?
⚠ Common exam trap
Test-takers frequently confuse the legacy domain (`api.cognitive.microsoft.com`) with the current Azure domain (`cognitiveservices.azure.com`), or they mistakenly use the Analyze API endpoint (`/analyze`) when a dedicated sentiment endpoint is required, leading them to pick options B or C.
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
✓
https://mytextanalytics.cognitiveservices.azure.com/text/analytics/v3.1/sentiment
The Sentiment Analysis API for Azure Cognitive Services Text Analytics uses the endpoint pattern `https://<resource-name>.cognitiveservices.azure.com/text/analytics/v3.1/sentiment`. This is the standard REST API endpoint for sentiment analysis in version 3.1, which requires the `/text/analytics/v3.1/sentiment` path appended to the custom resource domain.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
https://mytextanalytics.cognitiveservices.azure.com/sentiment/v3.1
Why it's wrong here
The path /sentiment/v3.1 does not exist on the Text Analytics REST API; the operation is exposed as /text/analytics/v3.1/sentiment. It is tempting because the host is correct and the version and operation names appear, but the segment order is wrong, so the call returns 404.
- ✗
https://mytextanalytics.api.cognitive.microsoft.com/text/analytics/v3.1/sentiment
Why it's wrong here
The regional endpoint uses the api.cognitive.microsoft.com host, which belongs to the older Cognitive Services account pattern; the Text Analytics resource created in the portal exposes a cognitiveservices.azure.com host. It is tempting because legacy tutorials still show this URL, and it works for classic multi-service keys.
- ✗
https://mytextanalytics.cognitiveservices.azure.com/analyze
Why it's wrong here
The /analyze path belongs to the newer unified Language service, which requires a Language resource rather than a Text Analytics resource. It is tempting because Microsoft is consolidating text capabilities there, but the stem specifies a Text Analytics resource and key1, whose sentiment operation sits under /text/analytics/v3.1/sentiment.
- ✓
https://mytextanalytics.cognitiveservices.azure.com/text/analytics/v3.1/sentiment
Why this is correct
Cognitive Services multi-service and Text Analytics resources expose a regional or custom subdomain endpoint ending in cognitiveservices.azure.com, followed by the service path. The sentiment route under /text/analytics/v3.1/ matches the Sentiment Analysis API for this resource.
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Senior Network & Security Engineer · founder of Courseiva
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