- A
headers = {'Authorization': 'Token ' + token}\nresponse = requests.get(url, headers=headers)
Why wrong: Should be 'Bearer' not 'Token'.
- B
response = requests.get(url, headers={'Authorization': token})
Why wrong: Missing 'Bearer ' prefix.
- C
headers = {'Authorization': 'Bearer ' + token}\nresponse = requests.get(url, headers=headers)
Correct usage of Bearer token authentication.
- D
response = requests.get(url, auth=('Bearer', token))
Why wrong: auth parameter is for basic authentication, not bearer tokens.
Question 872 of 1,000
200-901 Software Development and Design Practice Question
This 200-901 practice question tests your understanding of software development and design. 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 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?
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)
Option C is correct because 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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
response = requests.get(url, auth=('Bearer', token))
Why it's wrong here
auth parameter is for basic authentication, not bearer tokens.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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.
Detailed technical explanation
How to think about this question
The Bearer token scheme is defined in RFC 6750 and is the standard for OAuth 2.0 token-based authentication. When using the requests library, the Authorization header must be manually constructed as 'Bearer <token>' because the library does not have built-in support for bearer tokens; it only provides direct support for Basic and Digest authentication via the auth parameter. In real-world scenarios, tokens often expire and require refresh logic, so the header must be dynamically updated in each request.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Software Development and Design — study guide chapter
Learn the concepts, then practise the questions
- →
Software Development and Design practice questions
Targeted practice on this topic area only
- →
All 200-901 questions
1,000 questions across all exam domains
- →
Cisco DevNet Associate 200-901 study guide
Full concept coverage aligned to exam objectives
- →
200-901 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related 200-901 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Software Development and Design practice questions
Practise 200-901 questions linked to Software Development and Design.
Understanding and Using APIs practice questions
Practise 200-901 questions linked to Understanding and Using APIs.
Application Deployment and Security practice questions
Practise 200-901 questions linked to Application Deployment and Security.
Cisco Platforms and Development practice questions
Practise 200-901 questions linked to Cisco Platforms and Development.
Network Fundamentals practice questions
Practise 200-901 questions linked to Network Fundamentals.
Infrastructure and Automation practice questions
Practise 200-901 questions linked to Infrastructure and Automation.
200-901 fundamentals practice questions
Practise 200-901 questions linked to 200-901 fundamentals.
200-901 scenario practice questions
Practise 200-901 questions linked to 200-901 scenario.
200-901 troubleshooting practice questions
Practise 200-901 questions linked to 200-901 troubleshooting.
Practice this exam
Start a free 200-901 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this 200-901 question test?
Software Development and Design — This question tests Software Development and Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: headers = {'Authorization': 'Bearer ' + token}\nresponse = requests.get(url, headers=headers) — Option C is correct because 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.
What should I do if I get this 200-901 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.