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 is creating an application that uses the Cisco Webex Teams API to send messages. What authentication method is typically used?
Session cookies
Why wrong: Session cookies are not used for API authentication.
Basic Auth
Why wrong: Webex does not use Basic Auth.
OAuth 2.0
OAuth 2.0 is the standard for Webex API.
API Key
Why wrong: Webex does not use static API keys; it uses tokens.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
OAuth 2.0
The Cisco Webex Teams API uses OAuth 2.0 as its primary authentication method for applications that need to act on behalf of a user. OAuth 2.0 provides delegated access via access tokens, allowing the application to send messages without exposing user credentials. This is the standard for modern REST APIs that require secure, scoped access.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Session cookies
Why it's wrong here
Session cookies are not used for API authentication.
Basic Auth
Why it's wrong here
Webex does not use Basic Auth.
OAuth 2.0
Why this is correct
OAuth 2.0 is the standard for Webex API.
Related concept
Read the scenario before looking for a memorised answer.
API Key
Why it's wrong here
Webex does not use static API keys; it uses tokens.
Common exam traps
The trap here is that candidates confuse API Keys with OAuth 2.0 tokens, assuming a simple key is sufficient, but Webex Teams requires the OAuth 2.0 flow for user-specific actions like sending messages, not just a static key.
Detailed technical explanation
OAuth 2.0 in Webex Teams involves obtaining an access token via the authorization code grant flow, where the application redirects the user to Cisco's authorization server. The token is then included in the HTTP Authorization header as 'Bearer <token>' for API calls. A subtle behavior is that refresh tokens are also provided to obtain new access tokens without re-authentication, which is critical for long-running applications.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Cisco Platforms and Development — This question tests Cisco Platforms and Development — Read the scenario before looking for a memorised answer..
The correct answer is: OAuth 2.0 — The Cisco Webex Teams API uses OAuth 2.0 as its primary authentication method for applications that need to act on behalf of a user. OAuth 2.0 provides delegated access via access tokens, allowing the application to send messages without exposing user credentials. This is the standard for modern REST APIs that require secure, scoped access.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 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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