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200-901 Practice Question: A Cisco SD-WAN vManage API call to retrieve…
A Cisco SD-WAN vManage API call to retrieve device inventory returns a 401 error. Which step is most likely missing?
⚠ Common exam trap
Cisco often tests the distinction between HTTP status codes (401 vs 400, 404, 502) to see if candidates understand that authentication failures produce a specific code, not generic errors.
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
✓
The authentication token is expired or invalid
A 401 Unauthorized error in Cisco SD-WAN vManage API indicates that the request lacks valid authentication credentials. The vManage API uses token-based authentication (typically a JSON Web Token, JWT) obtained via a POST to /j_security_check or /authenticate. If the token is expired, malformed, or not included in the Authorization header, the API returns 401. This is the most likely cause because the other options would produce different HTTP status codes (e.g., 400 for missing fields, 502 for unreachable device, 404 for incorrect endpoint).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The authentication token is expired or invalid
Why this is correct
401 indicates authentication failure.
- ✗
The request body is missing required fields
Why it's wrong here
Missing fields lead to 400 Bad Request.
- ✗
The device is unreachable
Why it's wrong here
Unreachable device does not cause a 401 from vManage.
- ✗
The API endpoint is incorrect
Why it's wrong here
Incorrect endpoint leads to 404 Not Found.
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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.