Implement Robust REST API Error Handling for Time Outs and Rate Limits 350-901 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   A REST API client receives a timeout error. The developer implements retry logic with exponential backoff. What is the primary purpose of adding jitter to the backoff calculation?

   • ATo reduce the total time spent retrying
   • BTo ensure the retry always happens at the exact same interval
   • CTo increase the number of retries allowed
   • DTo prevent multiple clients from retrying at the same time
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2. 2foundation · easy

   A REST API client receives an HTTP 429 response with a `Retry-After: 120` header. What should the client do?

   • AAbandon the request permanently
   • BWait 120 seconds, then retry the request
   • CRetry with a different HTTP method
   • DRetry immediately
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4. 3foundation · easy

   An API response includes the headers `X-RateLimit-Limit: 100`, `X-RateLimit-Remaining: 35`, and `X-RateLimit-Reset: 60`. What does the value `60` in the `X-RateLimit-Reset` header represent?

   • AThe number of requests remaining before the limit is reached
   • BThe HTTP status code to expect when the limit is exceeded
   • CThe total number of requests allowed per window
   • DThe number of seconds until the rate limit window resets
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5. 4expert · hard

   A network automation tool uses the Cisco Catalyst Center API to provision devices. The tool runs as a batch job and must complete within 30 minutes. Each API call can take up to 10 seconds normally, but under load can take up to 60 seconds. The tool currently uses a fixed 10-second timeout and fails immediately. The engineer needs to improve reliability without exceeding the 30-minute batch window. Which approach should the engineer take?

   • ASet the connection timeout to 60 seconds and the read timeout to 10 seconds.
   • BKeep the 10-second timeout but increase the number of retries to 10 with no backoff.
   • CSet the read timeout to 60 seconds and add a retry with exponential backoff, but cap the total time spent on each request to 2 minutes.
   • DSet the timeout to 60 seconds and disable retries to ensure the batch completes on time.
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6. 5foundation · easy

   A client receives a response with `X-RateLimit-Remaining: 5` and `X-RateLimit-Reset: 30`. The client needs to make 10 more requests. What is the most appropriate action to comply with the rate limit?

   • AMake all 10 requests immediately
   • BWait 30 seconds, then make all 10 requests
   • CIgnore the rate limit headers and retry on 429
   • DMake 5 requests now, wait for the reset, then make the remaining 5
   Reveal Solution Discussion Select an answer first