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.
Exhibit
{
"error": {
"code": "400",
"message": "Property 'fvTenant.attributes.name' is mandatory but not provided"
}
}
Refer to the exhibit. A developer sent a POST request to https://apic-ip/api/mo/uni/tn-testtenant.json with a JSON body missing the name attribute. What should the correct JSON body include?
Option D is correct because the Cisco APIC REST API requires the JSON body for creating a tenant to follow the object model structure: the top-level key is the managed object class (fvTenant), which contains an 'attributes' object with the 'name' property. The name must match the tenant name in the URL (testtenant), and the API expects lowercase for the name value unless the object model specifies otherwise.
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.
✗
{"fvTenant": {"name": "testtenant"}}
Why it's wrong here
Missing the 'attributes' wrapper, so the structure is incorrect.
Correctly nests the 'name' property under 'attributes' inside 'fvTenant'.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the requirement to nest attributes inside the managed object class, and the trap here is that candidates either omit the 'attributes' wrapper entirely (Option A) or place 'attributes' at the top level (Option B), both of which are common mistakes when transitioning from simpler REST APIs to the APIC's structured object model.
Detailed technical explanation
How to think about this question
The Cisco APIC REST API uses a hierarchical JSON structure based on the MIT (Management Information Tree), where each managed object (MO) is represented by its class name (e.g., fvTenant) and contains an 'attributes' dictionary for its properties. The API enforces case sensitivity on the 'name' attribute because it maps directly to the distinguished name (DN) in the MIT, and the URL path (e.g., /api/mo/uni/tn-testtenant.json) implicitly defines the tenant name; a mismatch in case would result in a 400 Bad Request or create a separate object.
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: {"fvTenant": {"attributes": {"name": "testtenant"}}} — Option D is correct because the Cisco APIC REST API requires the JSON body for creating a tenant to follow the object model structure: the top-level key is the managed object class (fvTenant), which contains an 'attributes' object with the 'name' property. The name must match the tenant name in the URL (testtenant), and the API expects lowercase for the name value unless the object model specifies otherwise.
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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