200-901 Understanding and Using APIs Practice Question
This 200-901 practice question tests your understanding of understanding and using apis. 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.
Refer to the exhibit. A Python script parses this JSON response to check if NetFlow is enabled on the network. Which code snippet correctly checks the NetFlow status?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
if response['netflow'].get('enabled', False):
Option A is correct because it uses the `.get()` method with a default value of `False` to safely access the `enabled` key within the `netflow` dictionary. This handles cases where the key might be missing or the value is `False`, avoiding a `KeyError` and correctly evaluating the boolean condition. In JSON, the `enabled` field is typically a boolean, so checking truthiness directly is the proper approach.
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.
✓
if response['netflow'].get('enabled', False):
Why this is correct
Safely checks for the 'enabled' key with a default of False.
Related concept
Read the scenario before looking for a memorised answer.
✗
if response['netflow']['enabled'] == 'true':
Why it's wrong here
The value is a boolean false, not the string 'true'.
✗
if response.netflow.enabled:
Why it's wrong here
This syntax is invalid for a dict; it would cause an AttributeError.
✗
if response['netflow']['enabled']:
Why it's wrong here
This would raise a KeyError if 'netflow' or 'enabled' key is missing.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the difference between JSON boolean values and their string representations, trapping candidates who treat `true`/`false` as strings instead of Python booleans, and also tests safe dictionary access methods versus direct key access that can raise exceptions.
Detailed technical explanation
How to think about this question
When parsing JSON responses from network devices (e.g., Cisco IOS-XE or NX-OS APIs), the `enabled` field is a JSON boolean (`true`/`false`), which Python converts to `True`/`False`. Using `.get('enabled', False)` is a defensive pattern that returns `False` if the key is missing, ensuring the script doesn't break on partial or malformed responses. In real-world automation, this prevents crashes when APIs return different schemas for different device models or software versions.
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 practitioner preparing for the 200-901 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Understanding and Using APIs — This question tests Understanding and Using APIs — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: if response['netflow'].get('enabled', False): — Option A is correct because it uses the `.get()` method with a default value of `False` to safely access the `enabled` key within the `netflow` dictionary. This handles cases where the key might be missing or the value is `False`, avoiding a `KeyError` and correctly evaluating the boolean condition. In JSON, the `enabled` field is typically a boolean, so checking truthiness directly is the proper approach.
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.
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Question Discussion
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