200-901 Cisco Platforms and Development Practice Question
A developer is working with the Webex API to receive real-time notifications when a message is posted. Which resource should they create?
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
✓
A webhook with resource 'messages' and event 'created'
Webex webhooks allow you to subscribe to events like message.created.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A webhook with resource 'messages' and event 'created'
Why this is correct
A webhook with resource 'messages' and event 'created' satisfies the real-time notification constraint: Webex pushes an HTTP POST to your target URL the instant a message is posted, avoiding polling. The 'created' event scopes delivery to new messages only, matching the stem's requirement precisely.
- ✗
A bot that polls the /v1/messages endpoint every second
Why it's wrong here
Polling the /v1/messages endpoint every second is a pull model that wastes API quota and cannot deliver real-time notifications; Webex pushes events only to registered webhooks. Polling suits one-off historical reads or environments where inbound HTTPS callbacks are impossible, not event-driven message alerts.
- ✗
A membership to the room to receive notifications
Why it's wrong here
Room membership grants a user access to messages but generates no HTTP callback; Webex delivers real-time notifications only through webhooks. Membership is relevant when controlling who may join or read a space, not when a developer needs programmatic event delivery.
- ✗
A webhook with resource 'rooms' and event 'created'
Why it's wrong here
A webhook with resource 'rooms' and event 'created' fires only when a new room is created, not when a message is posted. Webhooks are the correct mechanism for real-time push, but the resource must be 'messages' with the 'created' event to match this scenario.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.