200-901 Cisco Platforms and Development Practice Question
A developer wants to receive real-time notifications when a new message is posted in a Webex room. Which Webex API resource should they use?
⚠ Common exam trap
Cisco often tests the distinction between synchronous polling (Messages API) and asynchronous event-driven notifications (Webhooks), trapping candidates who assume polling is acceptable for real-time requirements.
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
✓
Webhooks
Webhooks provide real-time HTTP callbacks triggered by events in Webex, such as a new message being posted. By registering a webhook on the 'messages' resource with the 'created' event, the developer's server receives a POST request immediately when a message is sent, eliminating the need for polling.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Webhooks
Why this is correct
Webhooks provide event-driven notifications for Webex events.
- ✗
Memberships API
Why it's wrong here
Memberships API deals with room membership, not messages.
- ✗
Rooms API
Why it's wrong here
Rooms API manages rooms, not notifications.
- ✗
Messages API polling
Why it's wrong here
Polling is inefficient; webhooks are the proper way.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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