200-901 Understanding and Using APIs Practice Question
A Cisco Webex bot needs to receive real-time notifications when new messages are posted in a space. Which API feature should the bot 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 via the /webhooks API
Webex Webhooks allow real-time event notifications; the bot registers a webhook with a target URL that receives POST requests when events occur.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Server-Sent Events (SSE)
Why it's wrong here
Server-Sent Events provide a one-way stream from server to client over a persistent HTTP connection, but Webex does not offer an SSE endpoint for space messages. SSE suits streaming dashboards; Webex bots receive message events via webhook callbacks.
- ✗
Polling the /messages endpoint every second
Why it's wrong here
Polling every second repeatedly calls the messages endpoint, wasting quota and still missing sub-second events, and Webex rate-limits such traffic. Polling suits low-frequency, non-urgent checks; webhooks push message events to the bot as they occur.
- ✓
Webhooks via the /webhooks API
Why this is correct
Webhooks let the bot register a target URL with the /webhooks API; Webex then pushes HTTP POST notifications when messages are posted in the space. This satisfies the real-time requirement without polling, unlike continuously querying the messages endpoint.
- ✗
Long polling with a keep-alive connection
Why it's wrong here
Long polling repeatedly reopens requests and holds connections, adding latency and server load, and Webex does not expose a keep-alive notification stream this way. It suits APIs lacking push support; Webex instead delivers events through registered webhooks.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 200-901 question from scratch — 975 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
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.