Exam 300-635 Topic 7 Question 64 Discussion

Actual exam question for Cisco's 300-635 exam
Question #: 64
Topic #: 7
Which statement about synchronous and asynchronous API calls is true?

Suggested Answer: A Vote an answer

Synchronous API calls are blocking, meaning they hold up code execution until a response is returned from the server. This can lead to perceived latency or performance lag in an application if not managed properly. In contrast, asynchronous API calls do not block code execution; they allow the program to continue running and handle the response once it's available, typically through a callback function

by Jason at Jan 31, 2026, 12:32 PM

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