- A
Webhooks
Webhooks provide event-driven notifications for Webex events.
- B
Memberships API
Why wrong: Memberships API deals with room membership, not messages.
- C
Rooms API
Why wrong: Rooms API manages rooms, not notifications.
- D
Messages API polling
Why wrong: Polling is inefficient; webhooks are the proper way.
Question 331 of 1,000
200-901 Cisco Platforms and Development Practice Question
This 200-901 practice question tests your understanding of cisco platforms and development. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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.
Detailed technical explanation
How to think about this question
Webhooks in Webex use a registration endpoint (POST /webhooks) where you specify the resource (e.g., 'messages'), event (e.g., 'created'), and target URL. Under the hood, Webex sends an HMAC-SHA256 signature in the 'X-Spark-Signature' header for verification. In a real-world scenario, a chatbot using webhooks can instantly respond to user commands without latency, whereas polling would introduce delays and unnecessary API rate-limit consumption.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 200-901 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this 200-901 question test?
Cisco Platforms and Development — This question tests Cisco Platforms and Development — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
What should I do if I get this 200-901 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
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.
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