200-901 Understanding and Using APIs Practice Question
Which TWO of the following are valid methods for authenticating to a Cisco REST API? (Select two.)
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
✓
API key in a custom header
API key and OAuth 2.0 token are common authentication methods. Basic auth (username:password) is also valid but less common for Cisco APIs. The question likely expects API key and OAuth 2.0.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
API key in a custom header
Why this is correct
Many Cisco APIs use API keys (e.g., Meraki).
- ✗
IP address whitelisting
Why it's wrong here
Not an authentication method; it's network-level access control.
- ✗
Username and password in the request body
Why it's wrong here
Not a standard REST API auth method; usually sent to token endpoint.
- ✗
Session ID in a cookie
Why it's wrong here
Cookies are not typical for REST APIs.
- ✓
OAuth 2.0 access token in Authorization header
Why this is correct
Used by Webex, DNA Center, etc.
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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.