hardMultiple ChoiceObjective-mapped
200-901 Practice Question: Refer to the exhibit
Exhibit
Refer to the exhibit.
```json
{
"errorMessage": "Invalid auth token",
"statusCode": 401,
"details": "Token has expired"
}
```Refer to the exhibit. A developer receives this response from Cisco DNA Center API. What is the most likely cause and solution?
⚠ Common exam trap
Cisco often tests the distinction between HTTP 401 (authentication failure) and 403 (authorization failure) — candidates confuse these two status codes, especially when the question involves API tokens.
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 token is expired; generate a new one using /dna/system/api/v1/auth/token.
The HTTP 401 Unauthorized response indicates that the request lacks valid authentication credentials. In Cisco DNA Center API, tokens are short-lived (default 1 hour) and must be refreshed via POST /dna/system/api/v1/auth/token. The error is not about the endpoint, body syntax, or RBAC permissions — it specifically means the token used is expired or invalid.
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 token is expired; generate a new one using /dna/system/api/v1/auth/token.
Why this is correct
Correct diagnosis and solution.
- ✗
The API path is incorrect; verify the endpoint URL.
Why it's wrong here
Error does not mention path.
- ✗
The request body is malformed; check JSON syntax.
Why it's wrong here
Error does not mention body.
- ✗
The user does not have permission; request admin to grant access.
Why it's wrong here
Error specifies expired token, not permission.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
Related to this question
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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.