200-901 Cisco Platforms and Development Practice Question
An administrator is configuring a Cisco Meraki Dashboard API integration. After receiving a 429 HTTP response, what header should be examined to determine when the request can be retried?
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
✓
Retry-After
Meraki's rate limit returns a 429 status with a Retry-After header indicating the number of seconds to wait before retrying.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
X-RateLimit-Reset
Why it's wrong here
X-RateLimit-Reset is a Meraki-specific header, but Meraki's 429 response directs clients to the standard Retry-After header for the retry interval. It is tempting because rate-limit reset headers do exist in some APIs, yet here the documented mechanism is Retry-After.
- ✓
Retry-After
Why this is correct
The Retry-After header tells the client how many seconds to wait before retrying, directly addressing rate limiting signalled by HTTP 429. Reading it prevents repeated rejected calls and satisfies the requirement to determine the correct retry timing.
- ✗
X-Cisco-Meraki-API-Key
Why it's wrong here
X-Cisco-Meraki-API-Key carries the credential used to authenticate the call, so it reveals nothing about when the rate limit resets. It is tempting because it appears in every Meraki API request, but Retry-After is the header that specifies the wait interval after a 429.
- ✗
Location
Why it's wrong here
Location accompanies 201 Created and 3xx redirects, pointing to a newly created or moved resource; it carries no retry timing. It is tempting because it is a standard response header, but the correct choice for a 429 is Retry-After, which specifies the wait interval.
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Written by Johnson Ajibi, MSc IT Security
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