The answer is `health = response['response'][0]['overallHealth']`. This is correct because the Cisco DNA Center API returns device health data as a nested JSON structure: the top-level dictionary contains a `'response'` key whose value is a list, and each element in that list is a dictionary representing a single device. To parse the device health response, you must first access the list via `response['response']`, then index the first element with `[0]`, and finally retrieve the `'overallHealth'` key from that dictionary. On the ENCOR 350-401 exam, this tests your ability to navigate REST API responses using Python dictionaries and lists—a common task when automating network monitoring. A frequent trap is forgetting that the `'response'` value is a list, even when it contains only one device, leading to errors like `response['response']['overallHealth']`. Remember the pattern: dictionary → list → dictionary → key, or simply "dot into the list first."
CCNP Cisco DNA Center Practice Question
This 350-401 practice question tests your understanding of cisco dna center. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 engineer is using the Cisco DNA Center REST API to retrieve the health score of a specific device. The API response is as follows:
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
health = response['response'][0]['overallHealth']
The response is a dictionary with a key 'response' that contains a list. The list has one dictionary. To access 'overallHealth', you need to index the list and then the key.
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.
✓
health = response['response'][0]['overallHealth']
Why this is correct
Correct. This accesses the first element of the list inside 'response' and then retrieves 'overallHealth'.
Related concept
Read the scenario before looking for a memorised answer.
✗
health = response['overallHealth']
Why it's wrong here
This would fail because 'overallHealth' is not a top-level key.
✗
health = response['response']['overallHealth']
Why it's wrong here
This would fail because 'response' contains a list, not a dictionary.
✗
health = response[0]['overallHealth']
Why it's wrong here
This would fail because the top-level object is a dictionary, not a list.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 practitioner preparing for the 350-401 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Cisco DNA Center — This question tests Cisco DNA Center — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: health = response['response'][0]['overallHealth'] — The response is a dictionary with a key 'response' that contains a list. The list has one dictionary. To access 'overallHealth', you need to index the list and then the key.
What should I do if I get this 350-401 question wrong?
Identify which 350-401 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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