200-901 Software Development and Design Practice Question
A network automation script uses the requests library to retrieve device information from a REST API. The API requires authentication via a bearer token. Which code example correctly sets the Authorization header?
⚠ Common exam trap
Cisco often tests the distinction between the 'Bearer' scheme and other authentication methods, and the trap here is that candidates confuse the auth parameter (which only supports Basic/Digest) with the need to manually set the Authorization header for bearer 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
✓
headers = {'Authorization': 'Bearer ' + token}\nresponse = requests.get(url, headers=headers)
It constructs the Authorization header using the 'Bearer' scheme, which is the standard method for passing OAuth 2.0 bearer tokens in HTTP requests. The requests library requires the header to be explicitly set as a dictionary, and the token must be prefixed with 'Bearer ' to comply with RFC 6750.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
headers = {'Authorization': 'Token ' + token}\nresponse = requests.get(url, headers=headers)
Why it's wrong here
Should be 'Bearer' not 'Token'.
- ✗
response = requests.get(url, headers={'Authorization': token})
Why it's wrong here
Missing 'Bearer ' prefix.
- ✓
headers = {'Authorization': 'Bearer ' + token}\nresponse = requests.get(url, headers=headers)
Why this is correct
Correct usage of Bearer token authentication.
- ✗
response = requests.get(url, auth=('Bearer', token))
Why it's wrong here
auth parameter is for basic authentication, not bearer tokens.
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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.