This 200-901 practice question tests your understanding of cisco platforms and development. 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.
When using Cisco Intersight API to manage UCS servers, a script must invoke an API that triggers a firmware upgrade. Which HTTP method and endpoint pattern should be used?
PUT to /api/v1/version
Why wrong: PUT is for updates, not actions.
DELETE to /api/v1/firmware
Why wrong: DELETE removes resources.
GET to /api/v1/status
Why wrong: GET retrieves status, not triggers actions.
POST to /api/v1/upgrade
This is consistent with Intersight API patterns for action endpoints.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
POST to /api/v1/upgrade
Option D is correct because triggering a firmware upgrade in Cisco Intersight requires creating a new operation, which aligns with the POST HTTP method. The endpoint /api/v1/upgrade is a typical RESTful pattern for initiating an upgrade action, as POST is used to submit data to a resource to create or trigger a process. In Intersight's API, firmware upgrades are managed via POST requests to specific endpoints like /api/v1/upgrade, not through retrieval, modification, or deletion of existing resources.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
PUT to /api/v1/version
Why it's wrong here
PUT is for updates, not actions.
DELETE to /api/v1/firmware
Why it's wrong here
DELETE removes resources.
GET to /api/v1/status
Why it's wrong here
GET retrieves status, not triggers actions.
POST to /api/v1/upgrade
Why this is correct
This is consistent with Intersight API patterns for action endpoints.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Cisco often tests the misconception that firmware upgrades are performed via PUT (update) or GET (status check), but the correct method is POST because it initiates a new action rather than modifying an existing resource.
Detailed technical explanation
Cisco Intersight's RESTful API follows standard HTTP semantics where POST is the method for creating resources or triggering actions that are not idempotent, such as firmware upgrades. The upgrade process involves submitting a payload with parameters like target device, firmware version, and schedule, which the API processes asynchronously, returning a task ID for monitoring. In real-world scenarios, failing to use POST for such operations results in HTTP 405 Method Not Allowed errors, as the API enforces correct method usage per endpoint.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
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FAQ
Cisco Platforms and Development — This question tests Cisco Platforms and Development — Read the scenario before looking for a memorised answer..
The correct answer is: POST to /api/v1/upgrade — Option D is correct because triggering a firmware upgrade in Cisco Intersight requires creating a new operation, which aligns with the POST HTTP method. The endpoint /api/v1/upgrade is a typical RESTful pattern for initiating an upgrade action, as POST is used to submit data to a resource to create or trigger a process. In Intersight's API, firmware upgrades are managed via POST requests to specific endpoints like /api/v1/upgrade, not through retrieval, modification, or deletion of existing resources.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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