3. Identify the Constraints When Consuming APIs 200-901 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What is the primary purpose of using TLS (Transport Layer Security) when consuming an API?

   • ATo authenticate the client using an API key
   • BTo encrypt data in transit between the client and the API server
   • CTo convert data from JSON to XML format
   • DTo limit the number of requests a client can make
   Reveal Solution Discussion Select an answer first
2. 22application · medium

   A script that provisions network devices via a Cisco Catalyst Center API occasionally fails with HTTP 500 errors. The team wants to implement a retry mechanism. What is the most appropriate retry strategy?

   • ADo not retry; log the error and continue
   • BRetry with exponential backoff and a maximum retry count
   • CRetry immediately up to 10 times with no delay
   • DRetry only once after a 5-minute delay
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   Why is API versioning important for API consumers?

   • AIt eliminates the need for authentication by providing separate endpoints.
   • BIt automatically converts data formats between versions.
   • CIt increases the speed of API responses by caching different versions.
   • DIt allows the API provider to introduce breaking changes without disrupting existing clients.
   Reveal Solution Discussion Select an answer first
5. 24application · medium

   A network automation script polls a device inventory API every 5 seconds. The API returns a 429 status with a Retry-After header of 120 seconds. The script currently logs the error and immediately retries, causing repeated 429s. What should the script do to handle this constraint?

   • ASwitch to a different API endpoint that returns the same data
   • BHonor the Retry-After header and wait 120 seconds before the next request
   • CIgnore the Retry-After header and retry after a fixed 10-second delay
   • DIncrease the request frequency to complete the sync faster
   Reveal Solution Discussion Select an answer first
6. 25application · medium

   A monitoring application sends bursts of 100 requests per second to a network analytics API. The API throttles requests to 10 per second per client. The application receives 429 responses during bursts. What is the best way to adapt to this throttling constraint?

   • AIgnore the 429 responses and continue sending
   • BUse multiple API keys to increase the effective limit
   • CSend all requests at once and rely on retries
   • DSpread requests evenly over time to stay within the 10-per-second limit
   Reveal Solution Discussion Select an answer first